Name: ambulatory ecg recording in mice
Uploaded: 2010-05-27T17:00:00
Description: Watch this Scientific Journal Video about Ambulatory ECG Recording in Mice at JoVE.com

Mark McCauley is supported by an NIH mentored-training grant 5T32HL066991-07
Xander Wehrens is supported by NIH/NHLBI grants 1R01HL091947-01A209 and 3R01HL089598-03S109

1. Preparation of Telemeter for Surgical Implantation
<ol>
 <li>Before inserting an ECG telemeter into the mouse, it is important to make sure the ECG telemeter is sterile and in good working order. New telemetry devices are typically provided in a sterile condition by the manufacturer. ECG telemeters can be reused provided the device is cleaned using Tergazyme 1% solution for at least 4 hours. You may rinse the telemeter with sterile water after cleaning with Tergazyme. Additionally, use Wavicide-01 disinfect...

<ol>
	<li>Cerrone, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Bidirectional+ventricular+tachycardia+and+fibrillation+elicited+in+a+knock-in+mouse+model+carrier+of+a+mutation+in+the+cardiac+ryanodine+receptor.">Bidirectional ventricular tachycardia and fibrillation elicited in a knock-in mouse model carrier of a mutation in the cardiac ryanodine receptor.</a> Circ Res. 96 (10), e77-e77 (2005).</li><li>Chelu, M. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Calmodulin+kinase+II-mediated+sarcoplasmic+reticulum+Ca2++leak+promotes+atrial+fibrillation+in+mice.">Calmodulin kinase II-mediated sarcoplasmic reticulum Ca2+ leak promotes atrial fibrillation in mice.</a> J Clin Invest. 119 (7), 1940-1940 (1940).</li><li>Sood, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intracellular+calcium+leak+due+to+FKBP12.6+deficiency+in+mice+facilitates+the+inducibility+of+atrial+fibrillation.">Intracellular calcium leak due to FKBP12.6 deficiency in mice facilitates the inducibility of atrial fibrillation.</a> Heart Rhythm. 5 (7), 1047-1047 (2008).</li><li>Swoap, S. J., Gutilla, M. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cardiovascular+changes+during+daily+torpor+in+the+laboratory+mouse.">Cardiovascular changes during daily torpor in the laboratory mouse.</a> Am J Physiol Regul Integr Comp Physiol. 297 (3), R769-R769 (2009).</li><li>Costa-Goncalves, d. a., C, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Role+of+the+multidomain+protein+spinophilin+in+blood+pressure+and+cardiac+function+regulation.">Role of the multidomain protein spinophilin in blood pressure and cardiac function regulation.</a> Hypertension. 52 (4), 702-702 (2008).</li><li>Wehrens, X. H., Kirchhoff, S., Doevendans, P. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+electrocardiography:+an+interval+of+thirty+years.">Mouse electrocardiography: an interval of thirty years.</a> Cardiovasc Res. 45 (1), 231-231 (2000).</li></ol>

The critical steps of this procedure are proper cleaning and preparation of the mouse prior to survival surgery. When a telemeter and the mouse operative site are properly cleaned, there is a much better post-surgical outcome. Additionally, close attention to lead placement reduces post-surgical skin erosion. Possible modifications to the technique include alternative configurations to evaluate lateral LV wall function (lead I configuration), or the use of the telemeter not only for ECG waveform analysis, but also for...

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<td>&nbsp;</td>
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<td>&nbsp;</td>
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<td>Veterinary Anesthesia Vaporizer</td>
<td>&nbsp;</td>
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<td>Isotec 4</td>
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ambulatory ecg recording in mice

Telemetric ECG recording in mice is essential to understanding the mechanisms behind arrhythmias, conduction disorders, and sudden cardiac death. Although the surface ECG is utilized for short-term measurements of waveform intervals, it is not practical for long-term studies of heart rate variability or the capture of rare episodes of arrhythmias. Implantable ECG telemeters offer the advantages of simple surgical implantation, long-term recording of electrograms in ambulatory mice, and scalability with simultaneous recordings of multiple animals. Here, we present a step-by-step guide to the implantation of telemeters for ambulatory ECG recording in mice. Careful adherence to aseptic technique is required for favorable survival results with the possibility of implantation and recording from weeks to months. Thus, implantable ECG telemetry is a valuable tool for detection of critical information on cardiac electrophysiology in ambulatory animal models such as the mouse. 

Watch this Scientific Journal Video about Ambulatory ECG Recording in Mice at JoVE.com

Ambulatory ECG Recording in Mice

Telemetric ECG has emerged as an essential tool in evaluating animal models for cardiac arrhythmias and sudden cardiac death. Here, we present a stepwise guide to telemetric ECG recordings for application in long-term ambulatory ECG monitoring in mice.

Telemetric ECG recording in mice is essential to understanding the mechanisms behind arrhythmias, conduction disorders, and sudden cardiac death. Although ...

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