Name: the intra-aortic balloon pump
Uploaded: 2021-02-05T14:30:00
Description: Watch this Scientific Journal Video about The Intra-Aortic Balloon Pump at JoVE.com

This protocol follows the guidelines of institutional human research ethics committee.
1. Pre-insertion preparation
NOTE: The IABP is preferably inserted in the cardiac catheterization lab under fluoroscopic guidance. Bedside placement can be considered in very critical clinical situations.
<ol>
	<li>Begin by preparing the catheterization laboratory for the procedure. Prepare sterile drapes and chlorhexidine or povidone iodine, IABP control unit, IABP catheter, ultr...

<ol>
	<li>Hochman, J. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Early+revascularization+in+acute+myocardial+infarction+complicated+by+cardiogenic+shock.+SHOCK+Investigators.+Should+We+Emergently+Revascularize+Occluded+Coronaries+for+Cardiogenic+Shock.">Early revascularization in acute myocardial infarction complicated by cardiogenic shock. SHOCK Investigators. Should We Emergently Revascularize Occluded Coronaries for Cardiogenic Shock.</a> New England Journal of Medicine. 341 (9), 625-634 (1999).</li><li>Thiele, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intraaortic+Balloon+Support+for+Myocardial+Infarction+with+Cardiogenic+Shock.">Intraaortic Balloon Support for Myocardial Infarction with Cardiogenic Shock.</a> New England Journal of Medicine. 367 (14), 1287-1296 (2012).</li><li>Berg, D. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Epidemiology+of+Shock+in+Contemporary+Cardiac+Intensive+Care+Units.">Epidemiology of Shock in Contemporary Cardiac Intensive Care Units.</a> Circulation Cardiovascular Quality and Outcomes. 12 (3), 005618 (2019).</li><li>Jeger, R. V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ten-year+trends+in+the+incidence+and+treatment+of+cardiogenic+shock.">Ten-year trends in the incidence and treatment of cardiogenic shock.</a> Annals of Internal Medicine. 149 (9), 618-626 (2008).</li><li>Harken, D. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+surgical+treatment+of+acquired+valvular+disease.">The surgical treatment of acquired valvular disease.</a> Circulation. 18 (1), 1-6 (1958).</li><li>Moulopoulos, S. D., Topaz, S. R., Kolff, W. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extracorporeal+assistance+to+the+circulation+and+intraaortic+balloon+pumping.">Extracorporeal assistance to the circulation and intraaortic balloon pumping.</a> Transactions of the American Society for Artificial Internal Organs. 8, 85-89 (1962).</li><li>Kantrowitz, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Initial+clinical+experience+with+intraaortic+balloon+pumping+in+cardiogenic+shock.">Initial clinical experience with intraaortic balloon pumping in cardiogenic shock.</a> JAMA. 203 (2), 113-118 (1968).</li><li>Krishna, M., Zacharowski, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Principles+of+intra-aortic+balloon+pump+counterpulsation.">Principles of intra-aortic balloon pump counterpulsation.</a> Continuing Education in Anaesthesia Critical Care &amp; Pain. 9 (1), 24-28 (2009).</li><li>Mueller, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+effects+of+intra-aortic+counterpulsation+on+cardiac+performance+and+metabolism+in+shock+associated+with+acute+myocardial+infarction.">The effects of intra-aortic counterpulsation on cardiac performance and metabolism in shock associated with acute myocardial infarction.</a> The Journal of clinical investigation. 50 (9), 1885-1900 (1971).</li><li>Kern, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enhanced+coronary+blood+flow+velocity+during+intraaortic+balloon+counterpulsation+in+critically+ill+patients.">Enhanced coronary blood flow velocity during intraaortic balloon counterpulsation in critically ill patients.</a> Journal of American College of Cardiology. 21 (2), 359-368 (1993).</li><li>Patterson, T., Perera, D., Redwood, S. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intra-aortic+balloon+pump+for+high-risk+percutaneous+coronary+intervention.">Intra-aortic balloon pump for high-risk percutaneous coronary intervention.</a> Circulation: Cardiovascular Interventions. 7 (5), 712-720 (2014).</li><li>Parissis, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=IABP:+history-evolution-pathophysiology-indications:+what+we+need+to+know.">IABP: history-evolution-pathophysiology-indications: what we need to know.</a> Journal of Cardiothoracic Surgery. 11 (1), 122 (2016).</li><li>O'Gara, P. T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=ACCF/AHA+guideline+for+the+management+of+ST-elevation+myocardial+infarction:+executive+summary:+a+report+of+the+American+College+of+Cardiology+Foundation/American+Heart+Association+Task+Force+on+Practice+Guidelines.">ACCF/AHA guideline for the management of ST-elevation myocardial infarction: executive summary: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines.</a> Circulation. 127 (4), 529-555 (2013).</li><li>Ibanez, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=2017+ESC+Guidelines+for+the+management+of+acute+myocardial+infarction+in+patients+presenting+with+ST-segment+elevation:+The+Task+Force+for+the+management+of+acute+myocardial+infarction+in+patients+presenting+with+ST-segment+elevation+of+the+European+Society+of+Cardiology+(ESC).">2017 ESC Guidelines for the management of acute myocardial infarction in patients presenting with ST-segment elevation: The Task Force for the management of acute myocardial infarction in patients presenting with ST-segment elevation of the European Society of Cardiology (ESC).</a> European Heart Journal. 39 (2), 119-177 (2018).</li><li>Santa-Cruz, R. A., Cohen, M. G., Ohman, E. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Aortic+counterpulsation:+a+review+of+the+hemodynamic+effects+and+indications+for+use.">Aortic counterpulsation: a review of the hemodynamic effects and indications for use.</a> Catheterization and Cardiovascular Interventions. 67 (1), 68-77 (2006).</li><li>Hendrickx, H. H., Berkowitz, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Differences+between+intra-aortic+balloon+pumps+and+their+use.">Differences between intra-aortic balloon pumps and their use.</a> Critical Care Medicine. 10 (11), 796-797 (1982).</li><li>Parissis, H., Soo, A., Leotsinidis, M., Dougenis, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+statistical+model+that+predicts+the+length+from+the+left+subclavian+artery+to+the+celiac+axis;+towards+accurate+intra+aortic+balloon+sizing.">A statistical model that predicts the length from the left subclavian artery to the celiac axis; towards accurate intra aortic balloon sizing.</a> Journal of Cardiothoracic Surgery. 6, 95 (2011).</li><li>Seldinger, S. I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Catheter+Replacement+of+the+Needle+in+Percutaneous+Arteriography:+A+New+Technique.">Catheter Replacement of the Needle in Percutaneous Arteriography: A New Technique.</a> Circulation. 39 (5), 368-376 (1953).</li><li>Pucher, P. H., Cummings, I. G., Shipolini, A. R., McCormack, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Is+heparin+needed+for+patients+with+an+intra-aortic+balloon+pump.">Is heparin needed for patients with an intra-aortic balloon pump.</a> Interactive Cardiovascular and Thoracic Surgery. 15 (1), 136-139 (2012).</li><li>Collet, J. P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=2020+ESC+Guidelines+for+the+management+of+acute+coronary+syndromes+in+patients+presenting+without+persistent+ST-segment+elevation:+The+Task+Force+for+the+management+of+acute+coronary+syndromes+in+patients+presenting+without+persistent+ST-segment+elevation+of+the+European+Society+of+Cardiology+(ESC).">2020 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation: The Task Force for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation of the European Society of Cardiology (ESC).</a> European Heart Journal. , (2020).</li><li>Thiele, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intraaortic+Balloon+Pump+in+Cardiogenic+Shock+Complicating+Acute+Myocardial+Infarction.">Intraaortic Balloon Pump in Cardiogenic Shock Complicating Acute Myocardial Infarction.</a> Circulation. 139 (3), 395-403 (2019).</li><li>Unverzagt, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intra-aortic+balloon+pump+counterpulsation+(IABP)+for+myocardial+infarction+complicated+by+cardiogenic+shock.">Intra-aortic balloon pump counterpulsation (IABP) for myocardial infarction complicated by cardiogenic shock.</a> Cochrane Database Systematic Review. (3), 007398 (2015).</li><li>Deppe, A. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preoperative+intra-aortic+balloon+pump+use+in+high-risk+patients+prior+to+coronary+artery+bypass+graft+surgery+decreases+the+risk+for+morbidity+and+mortality-A+meta-analysis+of+9,212+patients.">Preoperative intra-aortic balloon pump use in high-risk patients prior to coronary artery bypass graft surgery decreases the risk for morbidity and mortality-A meta-analysis of 9,212 patients.</a> Journal of Cardiac Surgery. 32 (3), 177-185 (2017).</li><li>Li, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+an+intra-aortic+balloon+pump+with+venoarterial+extracorporeal+membrane+oxygenation+on+mortality+of+patients+with+cardiogenic+shock:+a+systematic+review+and+meta-analysis.">Effect of an intra-aortic balloon pump with venoarterial extracorporeal membrane oxygenation on mortality of patients with cardiogenic shock: a systematic review and meta-analysis.</a> European Journal of Cardiothoracic Surgery. 55 (3), 395-404 (2019).</li><li>Wernly, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanical+circulatory+support+with+Impella+versus+intra-aortic+balloon+pump+or+medical+treatment+in+cardiogenic+shock-a+critical+appraisal+of+current+data.">Mechanical circulatory support with Impella versus intra-aortic balloon pump or medical treatment in cardiogenic shock-a critical appraisal of current data.</a> Clinical Research Cardiology. 108 (11), 1249-1257 (2019).</li><li>Seto, A. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Real-time+ultrasound+guidance+facilitates+femoral+arterial+access+and+reduces+vascular+complications:+FAUST+(Femoral+Arterial+Access+With+Ultrasound+Trial).">Real-time ultrasound guidance facilitates femoral arterial access and reduces vascular complications: FAUST (Femoral Arterial Access With Ultrasound Trial).</a> JACC Cardiovascular Interventions. 3 (7), 751-758 (2010).</li><li>Erdogan, H. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+which+patients+should+sheathless+IABP+be+used?+An+analysis+of+vascular+complications+in+1211+cases.">In which patients should sheathless IABP be used? An analysis of vascular complications in 1211 cases.</a> Journal of Cardiac Surgery. 21 (4), 342-346 (2006).</li><li>Huckaby, L. V., Seese, L. M., Mathier, M. A., Hickey, G. W., Kilic, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intra-Aortic+Balloon+Pump+Bridging+to+Heart+Transplantation:+Impact+of+the+2018+Allocation+Change.">Intra-Aortic Balloon Pump Bridging to Heart Transplantation: Impact of the 2018 Allocation Change.</a> Circulation : Heart Failure. 13 (8), 006971 (2020).</li><li>Estep, J. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Percutaneous+placement+of+an+intra-aortic+balloon+pump+in+the+left+axillary/subclavian+position+provides+safe,+ambulatory+long-term+support+as+bridge+to+heart+transplantation.">Percutaneous placement of an intra-aortic balloon pump in the left axillary/subclavian position provides safe, ambulatory long-term support as bridge to heart transplantation.</a> JACC Heart Failure. 1 (5), 382-388 (2013).</li><li>Jeevanandam, V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Hemodynamic+Effects+of+Intravascular+Ventricular+Assist+System+(iVAS)+in+Advanced+Heart+Failure+Patients+Awaiting+Heart+Transplant.">The Hemodynamic Effects of Intravascular Ventricular Assist System (iVAS) in Advanced Heart Failure Patients Awaiting Heart Transplant.</a> The Journal of Heart and Lung Transplantation. 36 (4), 194 (2017).</li><li>Siriwardena, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Complications+of+intra-aortic+balloon+pump+use:+does+the+final+position+of+the+IABP+tip+matter.">Complications of intra-aortic balloon pump use: does the final position of the IABP tip matter.</a> Anesthesia Intensive Care. 43 (1), 66-73 (2015).</li><li>Maccioli, G. A., Lucas, W. J., Norfleet, E. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+intra-aortic+balloon+pump:+a+review.">The intra-aortic balloon pump: a review.</a> Journal of Cardiothoracic Anesthesia. 2 (3), 365-373 (1988).</li><li>The intra-aortic balloon pump: a review. Citoday Available from: <a target="_blank" href="https://citoday.com/device-guide/european/intra-aortic-balloon-pumps-1">https://citoday.com/device-guide/european/intra-aortic-balloon-pumps-1</a> (2020)</li></ol>

Mechanical circulatory support is a rapidly evolving field. Even with the arrival of newer support devices, IABP remains the most widely used and simplest to deploy mechanical circulatory support device available currently25. In this article we describe in detail, the procedure for percutaneous insertion of IABP, the indications, evidence, troubleshooting and complications. Despite conflicting evidence regarding the use of IABP in AMI-related cardiogenic shock, it remains the most widely used form...

Cardiogenic shock is a clinical condition characterized by decreased end organ perfusion due to severe cardiac dysfunction. The most widely accepted definition of cardiogenic shock is based on the Should We Emergently Revascularize Occluded Coronaries for Cardiogenic Shock trial (SHOCK)1 and Intra-aortic Balloon Support for Myocardial Infarction with Cardiogenic Shock (IABP-SHOCK-II) trial2 and includes the following parameters:
1. Systolic blood pressure &#60;90 mm Hg for &#8805;30 min or vasopressor and/or mechanical support to maintain SBP &#8805;90 mm Hg
2. Evidence of end-organ hypoperfusion (urine output &#60;30 mL/h or cool extremities)
3. Hemodynamic criteria: cardiac index &#8804;2.2 L/min/m2 and pulmonary capillary wedge pressure &#8805;15 mm Hg
Acute myocardial infarction (AMI) is the most common cause of cardiogenic shock accounting for approximately 30% of cases3. Despite advances in the treatment of patients with AMI with early invasive revascularization, the mortality of cardiogenic shock remains high4. The mechanism of diastolic augmentation showing improvement in coronary perfusion and decreased left ventricular work was first demonstrated in 19585. Subsequently, in 1962 the first experimental prototype of IABP was developed6. Six years later, Kantrowitz et al.7 presented the first clinical experience of IABP use in four patients with AMI and cardiogenic shock unresponsive to medical therapy.
The IABP&#39;s mechanism of action involves inflation of the balloon during diastole and deflation during systole. This results in two important hemodynamic consequences: When the balloon inflates in diastole, the blood in the aorta is displaced proximally towards the aortic root thereby increasing coronary blood flow. When the balloon deflates in systole, it causes a vacuum or suction effect decreasing afterload and augmenting cardiac output8. The hemodynamic changes caused by IABP are listed below9 (Table 1):
1.Increase in aortic diastolic pressure
2.Decrease in systolic blood pressure
3.Increase in mean arterial pressure
4.Decrease in pulmonary capillary wedge pressure
5.Increase in cardiac output by ~20%
6.Increase in coronary blood flow10
The major indications of IABP are cardiogenic shock (due to AMI and other causes like ischemic and non-ischemic cardiomyopathy, myocarditis), mechanical complications of AMI like ventricular septal defect or severe mitral regurgitation, mechanical support during high risk percutaneous coronary interventions11, as a bridge to coronary artery bypass surgery in patients with critical CAD, inability to wean off cardiopulmonary bypass and as a bridge to decision or advanced therapies like left ventricular assist devices (LVAD) or cardiac transplantation in end stage heart failure12,13,14,15. Contraindications to use of IABP include moderate or severe aortic regurgitation which can worsen with counterpulsation, severe peripheral vascular disease which would preclude optimal arterial access and placement of the device and aortic pathologies like dissection12,15.
The IABP device consists of a console to control the unit and a vascular catheter with the balloon.
The console includes the following four components:
a) Monitor unit which helps to process and determine a trigger signal for the balloon. The signal can be either electrocardiographic (ECG) triggering or pressure signal triggering;
b) Control unit: Processes the trigger signal and activates the gas valve to help with inflation or deflation;
c) A gas cylinder that contains helium. Carbon dioxide is an alternative but is less preferred than helium. Helium has a lower density and provides better balloon inflation characteristics with more rapid inflation and deflation16;
d) A valve unit which helps with gas delivery.
The IABP (balloon) catheter is a 7-8.5 F vascular catheter with distance markings. The catheter has a polyethylene balloon mounted at the tip. The balloon size can vary from 20-50 mL. The ideal balloon has a length to cover from the left subclavian artery to the celiac artery take off, the inflated diameter measuring 90 to 95% of that of the descending aorta. The most commonly used balloon size in adult patients (height 5&#39;4&#8243;/162 cm to 6&#39;/182 cm) is 40 mL. A 50 mL balloon is used for patients &#62;6&#39;/182 cm and 34 cm balloon for 5&#39;/152 cm to 5&#39;4&#8243;/162 cm tall patients12,17 (Table 2).

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>IABP catheter and console</td>
			<td>Getinge</td>
			<td>Sensation Plus</td>
			<td></td>
		</tr>
		<tr>
			<td>Micropuncture Introducer Set</td>
			<td>Cook Medical</td>
			<td>G48006</td>
			<td></td>
		</tr>
		<tr>
			<td>Sterile drapes</td>
			<td>Haylard</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Ultrasound</td>
			<td>GE</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Lidocaine</td>
			<td>Pfizer</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

the intra-aortic balloon pump

Cardiogenic shock remains one of the most challenging clinical syndromes in modern medicine. Mechanical support is being increasingly used in the management of cardiogenic shock. Intra-aortic balloon pump (IABP) is one of the earliest and most widely used types of mechanical circulatory support. The device acts by external counterpulsation and uses systolic unloading and diastolic augmentation of aortic pressure to improve hemodynamics. Although IABP provides less hemodynamic support when compared with newer mechanical circulatory support devices, it can still be the mechanical support device of choice in appropriate situations because of its relative simplicity of insertion and removal, need for smaller size vascular access and better safety profile. In this review, we discuss the equipment, procedural and technical aspects, hemodynamic effects, indications, evidence, current status and recent advances in the use of IABP in cardiogenic shock.

Despite being used for many decades now, the evidence on IABP use has been controversial. Routine use of IABP in patients with AMI and cardiogenic shock is not recommended. The previous guidelines of the American Heart Association/American College of Cardiology (AHA/ACC) and the European Society of Cardiology (ESC) strongly recommended the use of the IABP in patients with AMI-associated cardiogenic shock (Class I B and Class I C) on the basis of pathophysiological considerations, non-randomized trials and registry data. ...

Watch this Scientific Journal Video about The Intra-Aortic Balloon Pump at JoVE.com

The Intra-Aortic Balloon Pump

We describe the steps for the percutaneous implantation of the intra-aortic balloon pump (IABP), a mechanical circulatory support device. It acts by counterpulsation, inflating at the onset of diastole, augmenting diastolic aortic pressure and improving coronary blood flow and systemic perfusion, and deflating before systole, reducing left ventricular afterload.

Cardiogenic shock remains one of the most challenging clinical syndromes in modern medicine. Mechanical support is being increasingly used in the ...

The intra-aortic balloon pump is a support device that works on the principle of counterpulsation. It inflates during diastole thereby augmenting diastolic aortic pressure, improving coronary blood flow, and systemic perfusion. And deflates during systole, thereby reducing LV afterload.Demonstrating the insertion of balloon pump today, will be myself and Dr.Ganesh Gajanan, Interventional Cardiology Fellow at the University of Nebraska Medical Center. Before performing the procedure, have the patient lay flat in the supine position and prepare and drape the patient in the usual sterile fashion with a plan to access the femoral artery. Next, use a 50 milliliter syringe to apply vacuum to the one-way valve at the catheter hub of the IABP catheter.When the balloon has been completely deflated remove the stylet in the catheter and manually flush the inner lumen with three to five milliliters of saline. For IABP insertion use the Seldinger technique to obtain femoral arterial access. Using ultrasound guided vascular access improves the first pass success and minimizes vascular complications.Insert a micropuncture needle at a 45 degree angle. When blood return is observed insert the introducer wire. Briefly insert the micropuncture sheath before exchanging for a larger IABP sheath.Using short strokes, advance the IABP catheter through the sheath until the tip of the balloon is situated distal to the left subclavian artery takeoff. Using the carina of the trachea as a landmark and ensuring that the proximal end of the catheter is above the renal arteries. Then secure the catheter in place.When the catheter has been secured remove the guide wire. Flush the inner lumen with three to five milliliters of saline, and attach a piece of standard arterial pressure monitoring tubing to the catheter hub. Remove the one way valve from the catheter and use the provided extension catheter to attach the catheter hub to the console.Turn the IABP on and open the gas tank. Connect the ECG cable and the fiber optic or pressure cable to the console. Press the start key on the console to automatically purge, fill, and calibrate the balloon.Select an appropriate ECG lead and trigger and set the inflation and deflation timing. Select an appropriate operation mode according to the clinical scenario and select a trigger source. The IABP uses a trigger to identify the beginning of the next cardiac cycle, and deflates the balloon when it recognizes a trigger event.Set a one to two frequency and observe the pressure changes on the IABP console to confirm that the assisted systolic pressure is lower than the unassisted one, that there is a decrease in the assisted and diastolic pressure, and that the diastolic augmentation is above the systolic pressure. If an optimal IABP support has been obtained set an appropriate IABP frequency and confirm that the IABP timing is appropriate. Then set the catheter to deliver a continuous flush of saline at a rate of three milliliters per hour through the inner lumen.Start the patient on systemic anticoagulation with unfractioned heparin or bivalirudin to reduce the risk of arterial thromboembolism, provided that there are no clinical contraindications to anticoagulation. After checking the distal pulses of the patient check the insertion site for signs of bleeding or hematoma and monitor the urine output. Recheck the balloon position to confirm that the balloon lies above the level of the renal arteries.If there is blood in the IABP tubing, balloon rupture is suspected. Then obtain a chest x-ray to verify optimal positioning of the device and change the sterile dressing to reduce the chances of infection daily. Stop systemic anti-coagulation prior to removing the IABP and set the IABP to one to one.After checking baseline distal perfusion using doppler and the activated clotting time, remove the sutures and press stop on the IABP console. Pull the IABP until resistance is met against the sheath. Hold the sheath in the IABP as a unit and apply manual pressure over the femoral artery for 20 to 30 minutes or until the bleeding stops.Reassess the distal pulses with doppler. In this table, the hemodynamic changes caused by IABP can be observed. As illustrated optimal IABP support can be confirmed by the presence of an assisted systolic pressure that is lower than the unassisted pressure, a decrease in the assisted and diastolic pressure, and a diastolic augmentation that is above the systolic pressure.There are a few important things to remember when inserting a balloon pump. Make sure that the balloon pump is inserted into the sheath as quickly as possible. The balloon tends to expand very rapidly once it's out of the plastic protector wrapping.The balloon pump can be inserted either by back loading with the wire or by wiring into the vasculature first and then advancing the balloon over the wire. Finally, make sure that the tip of the balloon is situated just to the left subclavian artery take off and the the proximal end is above the renal arteries.

Research

JoVE Journal

Medicine

Vascular Balloon Injury and Intraluminal Administration in Rat Carotid Artery

The carotid artery balloon injury model in rats has been well established for over two decades. It remains an important method to study the molecular and cellular mechanisms involved in vascular smooth muscle dedifferentiation, neointima formation and vascular remodeling. Male Sprague-Dawley rats are the most frequently employed animals for this model. Female rats are not preferred as female hormones are protective against vascular diseases and thus introduce a variation into this procedure. The left carotid is typically injured with the right carotid serving as a negative control. Left carotid injury is caused by the inflated balloon that denudes the endothelium and distends the vessel wall. Following injury, potential therapeutic strategies such as the use of pharmacological compounds and either gene or shRNA transfer can be evaluated. Typically for gene or shRNA transfer, the injured section of the vessel lumen is locally transduced for 30 min with viral particles encoding either a protein or shRNA for delivery and expression in the injured vessel wall. Neointimal thickening representing proliferative vascular smooth muscle cells usually peaks at 2 weeks after injury. Vessels are mostly harvested at this time point for cellular and molecular analysis of cell signaling pathways as well as gene and protein expression. Vessels can also be harvested at earlier time points to determine the onset of expression and/or activation of a specific protein or pathway, depending on the experimental aims intended. Vessels can be characterized and evaluated using histological staining, immunohistochemistry, protein/mRNA assays, and activity assays. The intact right carotid artery from the same animal is an ideal internal control. Injury-induced changes in molecular and cellular parameters can be evaluated by comparing the injured artery to the internal right control artery. Likewise, therapeutic modalities can be evaluated by comparing the injured and treated artery to the control injured only artery.

This protocol uses a balloon catheter to cause an intraluminal injury on the rat carotid artery and henceforth elicit neointimal hyperplasia. This is a well-established model for studying the mechanisms of vascular remodeling in response to injury. It is also widely used to determine the validity of potential therapeutic approaches.

The carotid artery balloon injury model in rats has been well established for over two decades. It remains an important method to study the molecular and ...

Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model

To simplify and facilitate beating heart (i.e., off-pump), minimally invasive coronary artery bypass surgery, a new coronary anastomotic connector, the Trinity Clip, is developed based on the excimer laser-assisted nonocclusive anastomosis technique. The Trinity Clip connector enables simplified, sutureless, and nonocclusive connection of the graft to the coronary artery, and an excimer laser catheter laser-punches the opening of the anastomosis. Consequently, owing to the complete nonocclusive anastomosis construction, coronary conditioning (i.e., occluding or shunting) is not necessary, in contrast to the conventional anastomotic technique, hence simplifying the off-pump bypass procedure. Prior to clinical application in coronary artery bypass grafting, the safety and quality of this novel connector will be evaluated in a long-term experimental porcine off-pump coronary artery bypass (OPCAB) study. In this paper, we describe how to evaluate the coronary anastomosis in the porcine OPCAB model using various techniques to assess its quality. Representative results are summarized and visually demonstrated.

This paper describes a novel nonocclusive coronary anastomotic connector in a porcine off-pump coronary artery bypass (OPCAB) model. This easy-to-use coronary connector has intrinsic potential to facilitate minimally invasive OPCAB surgery.

To simplify and facilitate beating heart (i.e., off-pump), minimally invasive coronary artery bypass surgery, a new coronary anastomotic connector, the ...

A Rat Carotid Balloon Injury Model to Test Anti-vascular Remodeling Therapeutics

The rat carotid balloon injury is a well-established surgical model that has been used to study arterial remodeling and vascular cell proliferation. It is also a valuable model system to test, and to evaluate therapeutics and drugs that negate maladaptive remodeling in the vessel. The injury, or barotrauma, in the vessel lumen caused by an inflated balloon via an inserted catheter induces subsequent neointimal growth, often leading to hyperplasia or thickening of the vessel wall that narrows, or obstructs the lumen. The method described here is sufficiently sensitive, and the results can be obtained in relatively short time (2 weeks after the surgery). The efficacy of the drug or therapeutic against the induced-remodeling can be evaluated either by the post-mortem pathological and histomorphological analysis, or by ultrasound sonography in live animals. In addition, this model system has also been used to determine the therapeutic window or the time course of the administered drug. These studies can leadto the development of a better administrative strategy and a better therapeutic outcome. The procedure described here provides a tool for translational studies that bring drug and therapeutic candidates from bench research to clinical applications.

The rat carotid balloon injury model described below allows researchers to evaluate drugs or therapeutics that negate injury-induced arterial hyperplasia. Detailed pre-surgical preparation, surgical procedure, and post-surgical cares of the animal are described.

The rat carotid balloon injury is a well-established surgical model that has been used to study arterial remodeling and vascular cell proliferation. It is ...

Fabrication of Small Caliber Stent-grafts Using Electrospinning and Balloon Expandable Bare Metal Stents

Stent-grafts are widely used for the treatment of various conditions such as aortic lesions, aneurysms, emboli due to coronary intervention procedures and perforations in vasculature. Such stent-grafts are manufactured by covering a stent with a polymer membrane. An ideal stent-graft should have a biocompatible stent covered by a porous, thromboresistant, and biocompatible polymer membrane which mimics the extracellular matrix thereby promoting injury site healing. The goal of this protocol is to manufacture a small caliber stent-graft by encapsulating a balloon expandable stent within two layers of electrospun polyurethane nanofibers. Electrospinning of polyurethane has been shown to assist in healing by mimicking native extracellular matrix, thereby promoting endothelialization. Electrospinning polyurethane nanofibers on a slowly rotating mandrel enabled us to precisely control the thickness of the nanofibrous membrane, which is essential to achieve a small caliber balloon expandable stent-graft. Mechanical validation by crimping and expansion of the stent-graft has shown that the nanofibrous polyurethane membrane is sufficiently flexible to crimp and expand while staying patent without showing any signs of tearing or delamination. Furthermore, stent-grafts fabricated using the methods described here are capable of being implanted using a coronary intervention procedure using standard size guide catheters.

In the protocol, we present a method to manufacture a small caliber stent-graft by sandwiching a balloon expandable stent between two electrospun nanofibrous polyurethane layers.

Stent-grafts are widely used for the treatment of various conditions such as aortic lesions, aneurysms, emboli due to coronary intervention procedures and ...

Evaluation of Drug Sorption to PVC- and Non-PVC-based Tubes in Administration Sets Using a Pump

Administration sets are delivery tools for the direct application of drugs into the body and are composed of a spike, a drip chamber, tubes, Luer adapters (connectors), a needle cover for protection, and other accessories. Drug sorption to tubes of administration sets is a critical issue in terms of safety and efficacy. Although drug sorption is an important factor in the quality of an administration set, there are no standard evaluation methods for the regulation of drug sorption to the tubes. Here, we describe an evaluation protocol for drug sorption to tubes of administration sets. Tubes made of polyvinyl chloride (PVC)- and non-PVC-based polymeric materials were cut to 1 m in length. Diazepam and tacrolimus were used as model drugs. In the kinetic sorption study, we selected the drug concentration and flow rate based on the clinical usage of these drugs. After the dilution of each drug in a glass bottle, the diluted drug solution was delivered through tubes of administration sets using a pump. Samples were collected in amber vials at appropriate time points and the drugs were analyzed using high-performance liquid chromatography. Drug concentrations and sorption levels to tubes of the administration sets were calculated. Acceptable criteria to ensure the quality of administration sets are recommended.

We report a method for drug sorption evaluation using a pump and model drugs (diazepam and tacrolimus). After drug analysis using high-performance liquid chromatography, drug concentrations and sorption levels in the tubes of administration sets are calculated.

Administration sets are delivery tools for the direct application of drugs into the body and are composed of a spike, a drip chamber, tubes, Luer adapters ...

The Rabbit Model of Accelerated Atherosclerosis: A Methodological Perspective of the Iliac Artery Balloon Injury

Acute coronary syndrome resulting from coronary occlusion following atherosclerotic plaque development and rupture is the leading cause of death in the industrialized world. New Zealand White (NZW) rabbits are widely used as an animal model for the study of atherosclerosis. They develop spontaneous lesions when fed with atherogenic diet; however, this requires long time of 4 - 8 months. To further enhance and accelerate atherogenesis, a combination of atherogenic diet and mechanical endothelial injury is often employed. The presented procedure for inducing atherosclerotic plaques in rabbits uses a balloon catheter to disrupt the endothelium in the left iliac artery of NZW rabbits fed with atherogenic diet. Such mechanical damage caused by the balloon catheter induces a chain of inflammatory reactions initiating neointimal lipid accumulation in a time dependent fashion. Atherosclerotic plaque following balloon injury show neointimal thickening with extensive lipid infiltration, high smooth muscle cell content and presence of macrophage derived foam cells. This technique is simple, reproducible and produces plaque of controlled length within the iliac artery. The whole procedure is completed within 20 - 30 min. The procedure is safe with low mortality and also offers high success in obtaining substantial intimal lesions. The procedure of balloon catheter induced arterial injury results in atherosclerosis within two weeks. This model can be used for investigating the disease pathology, diagnostic imaging and to evaluate new therapeutic strategies.

Animal models of atherosclerosis are essential to understand the mechanism and to investigate newer approaches to prevent plaque development or rupture, a leading cause of death in the industrialized world. This protocol uses a combination of balloon injury and cholesterol rich diet to induce atherosclerotic plaques in rabbit iliac artery.

Acute coronary syndrome resulting from coronary occlusion following atherosclerotic plaque development and rupture is the leading cause of death in the ...

Balloon-based Injury to Induce Myointimal Hyperplasia in the Mouse Abdominal Aorta

The use of animal models is essential for a better understanding of MH, one major cause for arterial stenosis.In this article, we demonstrate a murine balloon denudation model, which is comparable with established vessel injury models in large animals. The aorta denudation model with balloon catheters mimics the clinical setting and leads to comparable pathobiological and physiological changes. Briefly, after performing a horizontal incision in the aorta abdominalis, a balloon catheter will be inserted into the vessel, inflated, and introduced retrogradely. Inflation of the balloon will lead to intima injury and overdistension of the vessel. After removing the catheter, the aortic incision will be closed with single stiches. The model shown in this article is reproducible, easy to perform, and can be established quickly and reliably. It is especially suitable for evaluating expensive experimental therapeutic agents, which can be applied in an economical fashion. By using different knockout-mouse strains, the impact of different genes on MH development can be assessed.

This article demonstrates a murine model to study the development of myointimal hyperplasia (MH) after aortic balloon injury.

The use of animal models is essential for a better understanding of MH, one major cause for arterial stenosis.In this article, we demonstrate a murine ...

Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery

Chronic cardiac ischemia that impairs cardiac function, but does not result in infarct, is termed hibernating myocardium (HM). A large clinical subset of coronary artery disease (CAD) patients have HM, which in addition to causing impaired function, puts them at higher risk for arrhythmia and future cardiac events. The standard treatment for this condition is revascularization, but this has been shown to be an imperfect therapy. The majority of pre-clinical cardiac research focuses on infarct models of cardiac ischemia, leaving this subset of chronic ischemia patients largely underserved. To address this gap in research, we have developed a well-characterized and highly reproducible model of hibernating myocardium in swine, as swine are ideal translational models for human heart disease. In addition to creating this unique disease model, we have optimized a clinically relevant treatment model of coronary artery bypass surgery in swine. This allows us to accurately study the effects of bypass surgery on heart disease, as well as investigate additional or alternate therapies. This model surgically induces single vessel stenosis by implanting a constrictor on the left anterior descending (LAD) artery in a young pig. As the pig grows, the constrictor creates a gradual stenosis, resulting in chronic ischemia with impaired regional function, but preserving tissue viability. Following the establishment of the hibernating myocardium phenotype, we perform off-pump coronary artery bypass graft surgery to revascularize the ischemic region, mimicking the gold-standard treatment for patients in the clinic.

This protocol presents a surgical large animal model of chronic, single vessel ischemia that results in regional abnormalities but does not create infarct, known as hibernating myocardium. Following establishment of chronic ischemia, animals are treated with off-pump LIMA-LAD coronary artery bypass graft surgery to revascularize the ischemic tissue.

Chronic cardiac ischemia that impairs cardiac function, but does not result in infarct, is termed hibernating myocardium (HM). A large clinical subset of ...

Harvest of Endothelial Cells from the Balloon Tips of Swan-Ganz Catheters after Right Heart Catheterization

A variety of pathologies lead to pulmonary hypertension (PH), which is defined as a mean pulmonary artery pressure exceeding 25 mmHg at rest. To further diagnose and manage PH, patients undergo repeated right heart catheterizations (RHC) wherein a Swan-Ganz catheter is advanced into a branch of the pulmonary artery and a balloon is inflated to wedge the catheter tip. This article illustrates a protocol whereby pulmonary artery endothelial cells (PAECs) may be harvested from the balloon tips of Swan-Ganz catheters after RHC, and purified with an anti- CD146 affinity column technique to purify putative PAECs. These cells might be used to provide an in situ snapshot of the biological state of the pulmonary vasculature endothelium to complement hemodynamic measurements obtained during RHC. Harvested and purified PAECs may be used for either cell culture or for subsequent analytical assays such as flow cytometery.

This protocol describes the removal and purification of pulmonary artery endothelial cells (PAECs) that adhere to the balloon tips of Swan-Ganz catheters while they are wedged in the pulmonary artery during right heart catheterization and remain adherent to the deflated balloon following removal from the patient's body.

A variety of pathologies lead to pulmonary hypertension (PH), which is defined as a mean pulmonary artery pressure exceeding 25 mmHg at rest. To further ...

Implantation of an Isoproterenol Mini-Pump to Induce Heart Failure in Mice

Isoproterenol (ISO), is a non-selective beta-adrenergic agonist, that is used widely to induce cardiac injury in mice. While the acute model mimics stress-induced cardiomyopathy, the chronic model, administered through an osmotic pump, mimics advanced heart failure in humans. The purpose of the described protocol is to create the chronic ISO-induced heart failure model in mice using an implanted mini-pump. This protocol has been used to induce heart failure in 100+ strains of inbred mice. Techniques on surgical pump implantation are described in detail and may be relevant to anyone interested in creating a heart failure model in mice. In addition, the weekly cardiac remodeling changes based on echocardiographic parameters for each strain and expected time to model development are presented. In summary, the method is simple and reproducible. Continuous ISO administered via the implanted mini-pump over 3 to 4 weeks is sufficient to induce cardiac remodeling. Finally, the success for ISO model creation may be assessed in vivo by serial echocardiography demonstrating hypertrophy, ventricular dilation, and dysfunction.

The chronic administration of isoproterenol via an implanted osmotic pump has been used widely to mimic advanced heart failure in mice. Here, we describe detailed methods in surgical mini-pump implantation for the continuous isoproterenol administration over 3 weeks, as well as, echocardiographic assessment for the successful model creation.

Isoproterenol (ISO), is a non-selective beta-adrenergic agonist, that is used widely to induce cardiac injury in mice. While the acute model mimics ...