自分の仕事のため NICU におけるすべての同僚を確認したいと思います。

このプロトコルは制度的レビュー ボードの恋次病院、上海交通大学医学部によって承認された。
 1 です。 患者の準備 注: 外科手術 ( 図 1) によって患者に ICP センサーを配置。センサーは、硬膜外腔、硬膜下、実質、または心室システムに配置されます。
<ol><li>特定の通信ケーブルを介してベッドサイド モニター誘導監視マシンに接続します</li>。
	<li>患者の参照を調整する &#39; s ベッドサイド モニター、ベッドサイド モニターからデータがマシンを監視誘導に従ってされるようにします</li>。
	<li>の患者に静脈ライン配置を実行 &#39; s 左または右橈骨動脈 20</li>。
	<li>、圧受容体と動脈の線を接続します</li>。
	<li>患者の圧力トランスデューサーを接続 &#39; 通信ケーブルを介して s ベッドサイド モニターします</li>。
	<li>測定された血圧が実際の値と一致するようにゼロ調整ベッドサイド モニターします</li>。
</ol> 2。生理学的パラメーターの記録 <ol><li>患者に接続 &#39; s ベッドサイド モニター データを収集し、ネットワーク ケーブルを介してデバイスを格納するとします</li>。
	<li>データ収集装置をオンにする電源ボタンを押します</li>。
	<li>集学的監視ソフトウェアが自動的に実行されるまで、数秒間待ちます</li>。
	<li>患者の名前、ID、診断、初期グラスゴーの昏睡状態のスケール (GCS) などの情報を入力します</li>。
	<li>をクリックして、&#34; を保存し、監視を開始 &#34;] ボタンをクリックすると、データの収集と格納を開始</li>。
	<li>をクリックして、&#34; をオフに &#34; データ集録 ( 図 2) の終わりに画面上のボタン</li>。
	<li>最後の GC を入力します</li>。
</ol> 3。パラメーター解析 <ol><li>ホスト上のユニバーサル シリアル バス (USB) インターフェイスを介して U ディスクに格納されたデータをダンプします</li>。
	<li>ユーザー名と分析サーバーへのログインにパスワードを入力します</li>。
	<li>をクリックして、&#34; 新しいレコードを作成する &#34; ボタンをクリックし、アップロードを開始する U ディスクのデータ ファイルを選択します</li>。
	<li>(データのサイズ) によって、データが分析される前に約 10 〜 20 分待ちます</li>。
	<li>をクリックして、&#34; 詳細 &#34; の結果を表示する各レコード ボタン</li>。
	<li>をクリックして、&#34; グラフ表示 &#34; に最終的な図を参照してください</li>。
	<li>詳細を表示するタイムラインをドラッグします</li>。
	<li>をクリックして、&#34; スキャッタ グラム &#34;] ボタンをクリックすると、パラメーターの分布を参照してください</li>。
</ol>

<ol>
	<li>Hawthorne, C., Piper, I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Monitoring+of+intracranial+pressure+in+patients+with+traumatic+brain+injury.">Monitoring of intracranial pressure in patients with traumatic brain injury.</a> Front Neurol. 5, 121 (2014).</li><li>Cooper, D. 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=Decompressive+craniectomy+in+diffuse+traumatic+brain+injury.">Decompressive craniectomy in diffuse traumatic brain injury.</a> N Engl J Med. 364 (16), 1493-1502 (2011).</li><li>Jiang, J. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Head+trauma+in+China.">Head trauma in China.</a> Injury. 44 (11), 1453-1457 (2013).</li><li>Hu, X., Xu, P., Asgari, S., Vespa, P., Bergsneider, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Forecasting+ICP+elevation+based+on+prescient+changes+of+intracranial+pressure+waveform+morphology.">Forecasting ICP elevation based on prescient changes of intracranial pressure waveform morphology.</a> IEEE Trans Biomed Eng. 57 (5), 1070-1078 (2010).</li><li>Di Ieva, A., Schmitz, E. M., Cusimano, M. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+of+intracranial+pressure:+past,+present,+and+future.">Analysis of intracranial pressure: past, present, and future.</a> Neuroscientist. 19 (6), 592-603 (2013).</li><li>Czosnyka, 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=Intracranial+pressure:+more+than+a+number.">Intracranial pressure: more than a number.</a> Neurosurg Focus. 22 (5), 10 (2007).</li><li>Lu, C. W., 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=Complexity+of+intracranial+pressure+correlates+with+outcome+after+traumatic+brain+injury.">Complexity of intracranial pressure correlates with outcome after traumatic brain injury.</a> Brain. 135 (8), 2399-2408 (2012).</li><li>Nucci, C. G., 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=Intracranial+pressure+wave+morphological+classification:+automated+analysis+and+clinical+validation.">Intracranial pressure wave morphological classification: automated analysis and clinical validation.</a> Acta Neurochir (Wien). 158 (3), 581-588 (2016).</li><li>Eide, P. K., Sorteberg, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Association+among+intracranial+compliance,+intracranial+pulse+pressure+amplitude+and+intracranial+pressure+in+patients+with+intracranial+bleeds.">Association among intracranial compliance, intracranial pulse pressure amplitude and intracranial pressure in patients with intracranial bleeds.</a> Neurol Res. 29 (8), 798-802 (2007).</li><li>Czosnyka, M., Czosnyka, Z. H., Whitfield, P. C., Donovan, T., Pickard, J. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Age+dependence+of+cerebrospinal+pressure-volume+compensation+in+patients+with+hydrocephalus.">Age dependence of cerebrospinal pressure-volume compensation in patients with hydrocephalus.</a> J Neurosurg. 94 (3), 482-486 (2001).</li><li>Howells, T., Lewen, A., Skold, M. K., Ronne-Engstrom, E., Enblad, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+evaluation+of+three+measures+of+intracranial+compliance+in+traumatic+brain+injury+patients.">An evaluation of three measures of intracranial compliance in traumatic brain injury patients.</a> Intensive Care Med. 38 (6), 1061-1068 (2012).</li><li>Schuhmann, M. U., 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=Value+of+overnight+monitoring+of+intracranial+pressure+in+hydrocephalic+children.">Value of overnight monitoring of intracranial pressure in hydrocephalic children.</a> Pediatr Neurosurg. 44 (4), 269-279 (2008).</li><li>Czosnyka, M., Pickard, J. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Monitoring+and+interpretation+of+intracranial+pressure.">Monitoring and interpretation of intracranial pressure.</a> J Neurol Neurosurg Psychiatry. 75 (6), 813-821 (2004).</li><li>Sorrentino, E., 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=Critical+thresholds+for+cerebrovascular+reactivity+after+traumatic+brain+injury.">Critical thresholds for cerebrovascular reactivity after traumatic brain injury.</a> Neurocrit Care. 16 (2), 258-266 (2012).</li><li>Carrera, E., 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=What+shapes+pulse+amplitude+of+intracranial+pressure.">What shapes pulse amplitude of intracranial pressure.</a> J Neurotrauma. 27 (2), 317-324 (2010).</li><li>Eide, P. K., 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=Pressure-derived+versus+pressure+wave+amplitude-derived+indices+of+cerebrovascular+pressure+reactivity+in+relation+to+early+clinical+state+and+12-month+outcome+following+aneurysmal+subarachnoid+hemorrhage.">Pressure-derived versus pressure wave amplitude-derived indices of cerebrovascular pressure reactivity in relation to early clinical state and 12-month outcome following aneurysmal subarachnoid hemorrhage.</a> J Neurosurg. 116 (5), 961-971 (2012).</li><li>Lazaridis, 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=Patient-specific+thresholds+of+intracranial+pressure+in+severe+traumatic+brain+injury.">Patient-specific thresholds of intracranial pressure in severe traumatic brain injury.</a> J Neurosurg. 120 (4), 893-900 (2014).</li><li>Czosnyka, 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=Monitoring+and+interpretation+of+intracranial+pressure+after+head+injury.">Monitoring and interpretation of intracranial pressure after head injury.</a> Acta Neurochir Suppl. 96, 114-118 (2006).</li><li>Steiner, L. 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=Continuous+monitoring+of+cerebrovascular+pressure+reactivity+allows+determination+of+optimal+cerebral+perfusion+pressure+in+patients+with+traumatic+brain+injury.">Continuous monitoring of cerebrovascular pressure reactivity allows determination of optimal cerebral perfusion pressure in patients with traumatic brain injury.</a> Crit Care Med. 30 (4), 733-738 (2002).</li><li>Tegtmeyer, K., Brady, G., Lai, S., Hodo, R., Braner, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Videos+in+Clinical+Medicine.+Placement+of+an+arterial+line.">Videos in Clinical Medicine. Placement of an arterial line.</a> N Engl J Med. 354 (15), 13 (2006).</li><li>Chesnut, R. 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=A+trial+of+intracranial-pressure+monitoring+in+traumatic+brain+injury.">A trial of intracranial-pressure monitoring in traumatic brain injury.</a> N Engl J Med. 367 (26), 2471-2481 (2012).</li></ol>

財政支援は受信されませんでした。

新しい集学的監視を紹介するこの記事の目的は、生理学的パラメーターを監視する使用ことができます、脳神経外科の重要な患者のための解析システムは臨床の現状を分析し、うまくいけば、予後を予測します。脳神経外科の重要な患者。今日では、ICP モニタリングの焦点は、不正確または遅延4,5,21のリスクを運ぶこと?...

ICP モニタリングが広く脳神経外科重症患者1,2,3で特に脳神経科で脳状態を評価する使用されます。誘導波形、アンプ、ラップ、PRx、IAAC、脳内循環、脳脊髄の代償的な予備の状態を反映でき、脳の対応4,5,のように ICP が派生したパラメーター平均 ICP 値ほか6,7,8,9,10,11,12,13。 彼らは切迫した神経学的な悪化および患者14,15,16,17,18も結果の可能性があります。彼らは、適切な治療19のガイダンスとして使用できます。ただし、臨床医のほとんどは、これらのパラメーターを無視して平均 ICP 値だけに集中します。いくつかの特定のデバイスの日常の臨床業務における臨床医のために適しているがあるために部分的です。
これらの欠点に対処する集学的モニタリング システムを最近開発しました。連続血圧計、ICP、酸素飽和度など患者の生体情報を集録するデータの自動収集と貯蔵装置を使用し、現在の臨床状態を明らかにするためにこれらの生理学的パラメーターを分析し、うまくいけば、脳神経外科の重要な患者の予後を予測します。この集学的モニタリング システムいくつかの利点があります: (1) 高周波、(2) 複数のパラメーター、すなわち、誘導波形、PRx、ラップ、IAAC、(3) それを長期間連続モニタリング、達成することができますそれを記録することができます、(4) でリアルタイムのデータを収集できます。ポータブルおよび簡単に学ぶことです。
この資料の目的は、したがって、重要な脳神経外科の患者の様々 な生理学的パラメーターを記録する集学的監視システムを使用する方法の詳細な方法を紹介しますです。

<table><tbody><tr><td>Bedside monitor</td><td>Philips</td><td>IntelliVue MP40 M8003A</td><td>With interfacing module</td></tr><tr><td>ICP monitoring machine</td><td>&amp;nbsp;Johnson &amp;amp; Johnson or Sophysa</td><td></td><td></td></tr><tr><td>Arterial cannula</td><td>BD</td><td>REF682245</td><td></td></tr><tr><td>Pressure transducer</td><td>Haisheng Medical</td><td>DBPT-0103</td><td></td></tr><tr><td>Data collection device</td><td>Shanghai Haoju</td><td>Neumatic</td><td></td></tr><tr><td>Computer</td><td></td><td></td><td>Requires Windows operating system</td></tr></tbody></table>

a detailed protocol for physiological parameters acquisition and analysis in neurosurgical critical patients

頭蓋内の圧力 (ICP) 監視は今広く脳神経外科重症患者。誘導波形、パルス (AMP) の振幅, ICP 振幅と ICP 平均 (RAP) の相関圧力反応性指数 (PRx)、ICP と動脈血圧 (ABP) 波振幅相関 (IAAC) ようなパラメーターを派生 ICP ICP 値の平均、ほかできます、頭蓋内圧亢進状態を反映、予後、および適切な治療の指針としても使用できます。ただし、臨床医のほとんどは、現在のデバイスの制限のためにこれらのパラメーターを無視している間平均 ICP 値だけに集中します。最近、監視システムはこれらの欠点に対処する集学的治療を開発しました。このポータブル、ユーザーフレンドリーなシステムはデータを収集し、及び貯蔵装置最初患者の生理学的パラメーターを連続集録する、すなわちABP、ICP、酸素飽和度を使用し、これらの生理学的パラメーターを分析します。集学的モニタリング システムは、現在の臨床状態を分析し、脳神経外科重症患者の予後を予測する生理学的パラメーターを監視する重要な尺度として受け付けられると思います。

この新しい集学的モニタリング システムは、22 脳神経外科重症患者 (男性 15 名) に適用されました。(54.55%) の 12 に外傷性脳損傷 (TBI) 苦しんでいた、9 (40.91%) いた頭蓋内出血と (4.55%) 1 重症脳梗塞。監視時間 1,900 時間 (患者 1 人あたり約 88 h) 以上です。成功の手術後我々 は継続的に監視され、分析、ICP、BP、CPP、PRx、ラップ、IAAC。図 3は、この監...

Watch this Scientific Journal Video about A Detailed Protocol for Physiological Parameters Acquisition and Analysis in Neurosurgical Critical Patients at JoVE.com

A Detailed Protocol for Physiological Parameters Acquisition and Analysis in Neurosurgical Critical Patients

最近、ポータブルの集学的脳神経外科重症患者の様々 な生理学的パラメーターの監視の監視システムを開発しました。この集学的監視システムを使用する方法の詳細なプロトコルをご紹介します。

生理学的パラメーターの詳細なプロトコル獲得と脳神経外科の重要な患者の分析

Intracranial pressure (ICP) monitoring is now widely used in neurosurgical critical patients. Besides mean ICP value, the ICP derived parameters such as ...

a-detailed-protocol-for-physiological-parameters-acquisition-analysis

Research

JoVE Journal

Medicine

6.8K ビュー.  Shanghai Jiaotong University School of Medicine. 最近、ポータブルの集学的脳神経外科重症患者の様々 な生理学的パラメーターの監視の監視システムを開発しました。この集学的監視システムを使用する方法の詳細なプロトコルをご紹介します。

ビデオ: A Detailed Protocol for Physiological Parameters Acquisition and Analysis in Neurosurgical Critical Patients

Performing Behavioral Tasks in Subjects with Intracranial Electrodes

Patients having stereo-electroencephalography (SEEG) electrode, subdural grid or depth electrode implants have a multitude of electrodes implanted in different areas of their brain for the localization of their seizure focus and eloquent areas. After implantation, the patient must remain in the hospital until the pathological area of brain is found and possibly resected. During this time, these patients offer a unique opportunity to the research community because any number of behavioral paradigms can be performed to uncover the neural correlates that guide behavior. Here we present a method for recording brain activity from intracranial implants as subjects perform a behavioral task designed to assess decision-making and reward encoding. All electrophysiological data from the intracranial electrodes are recorded during the behavioral task, allowing for the examination of the many brain areas involved in a single function at time scales relevant to behavior. Moreover, and unlike animal studies, human patients can learn a wide variety of behavioral tasks quickly, allowing for the ability to perform more than one task in the same subject or for performing controls. Despite the many advantages of this technique for understanding human brain function, there are also methodological limitations that we discuss, including environmental factors, analgesic effects, time constraints and recordings from diseased tissue. This method may be easily implemented by any institution that performs intracranial assessments; providing the opportunity to directly examine human brain function during behavior.

Patients implanted with intracranial electrodes provide a unique opportunity to record neurological data from multiple areas of the brain while the patient performs behavioral tasks. Here, we present a method of recording from implanted patients that can be reproducible at other institutions with access to this patient population.

頭蓋内電極を有する被験者に行動タスクの実行

Patients having stereo-electroencephalography (SEEG) electrode, subdural grid or depth electrode implants have a multitude of electrodes implanted in ...

行動学

Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans

In spite of the success in applying non-invasive electroencephalography (EEG), magneto-encephalography (MEG) and functional magnetic resonance imaging (fMRI) for extracting crucial information about the mechanism of the human brain, such methods remain insufficient to provide information about physiological processes reflecting cognitive and emotional functions at the subcortical level. In this respect, modern invasive clinical approaches in humans, such as deep brain stimulation (DBS), offer a tremendous possibility to record subcortical brain activity, namely local field potentials (LFPs) representing coherent activity of neural assemblies from localized basal ganglia or thalamic regions. Notwithstanding the fact that invasive approaches in humans are applied only after medical indication and thus recorded data correspond to altered brain circuits, valuable insight can be gained regarding the presence of intact brain functions in relation to brain oscillatory activity and the pathophysiology of disorders in response to experimental cognitive paradigms. In this direction, a growing number of DBS studies in patients with Parkinson&#39;s disease (PD) target not only motor functions but also higher level processes such as emotions, decision-making, attention, memory and sensory perception. Recent clinical trials also emphasize the role of DBS as an alternative treatment in neuropsychiatric disorders ranging from obsessive compulsive disorder (OCD) to chronic disorders of consciousness (DOC). Consequently, we focus on the use of combined invasive (LFP) and non-invasive (EEG) human brain recordings in assessing the role of cortical-subcortical structures in cognitive and emotional processing trough experimental paradigms (e.g. speech stimuli with emotional connotation or paradigms of cognitive control such as the Flanker task), for patients undergoing DBS treatment.

The present protocol aims at assessing cognitive-emotional functions in the basal ganglia by simultaneous neurophysiological recording of local field potentials and non-invasive brain cortical activity (EEG). The procedure is exemplified by the use of paradigms involving speech stimuli with emotional connotation or the Flanker task involving cognitive control.

認知の評価とヒトにおける感情的な関数の組み合わせ侵襲性皮質下および非侵襲性の面神経生理学レコーディング

In spite of the success in applying non-invasive electroencephalography (EEG), magneto-encephalography (MEG) and functional magnetic resonance imaging ...

Electrophysiology on Isolated Brainstem-spinal Cord Preparations from Newborn Rodents Allows Neural Respiratory Network Output Recording

While it is well known that the central respiratory drive is located in the brainstem, several aspects of its basic function, development, and response to stimuli remain to be fully understood. To overcome the difficulty of accessing the brainstem in the whole animal, isolation of the brainstem and part of the spinal cord is performed. This preparation is maintained in artificial cerebro-spinal fluid where gases, concentrations, and temperature are controlled and monitored. The output signal from the respiratory network is recorded by a suction electrode placed on the fourth ventral root. In this manner, stimuli can be directly applied onto the brainstem, and the effect can be recorded directly. The signal recorded is linked to the inspiratory signal sent to the diaphragm via the phrenic nerve, and can be described as bursts (around 8 bursts per minute). Analysis of these bursts (frequency, amplitude, length, and area under the curve) allows precise characterization of the stimulus effect on the respiratory network. The main limitation of this method is the viability of the preparation beyond the early post-natal stages. Thus, this method greatly focuses on the study of the whole network without the peripheral inputs in the newborn rat.

The central respiratory drive is located in the brainstem. Spontaneous respiratory motor output from an isolated brainstem-spinal cord is recorded by placing an electrode on the fourth ventral root. This experimental approach is valuable for pharmacological investigations or the assessment of respiratory challenges and genetic manipulations on rhythmic motor behavior.

新生児げっ歯類から単離された脳幹・脊髄調製物の電気生理学は、ニューラルネットワーク呼吸器の出力の記録を可能にします

While it is well known that the central respiratory drive is located in the brainstem, several aspects of its basic function, development, and response to ...

神経科学

Simultaneous Recordings of Cortical Local Field Potentials, Electrocardiogram, Electromyogram, and Breathing Rhythm from a Freely Moving Rat

Monitoring the physiological dynamics of the brain and peripheral tissues is necessary for addressing a number of questions about how the brain controls body functions and internal organ rhythms when animals are exposed to emotional challenges and changes in their living environments. In general experiments, signals from different organs, such as the brain and the heart, are recorded by independent recording systems that require multiple recording devices and different procedures for processing the data files. This study describes a new method that can simultaneously monitor electrical biosignals, including tens of local field potentials in multiple brain regions, electrocardiograms that represent the cardiac rhythm, electromyograms that represent awake/sleep-related muscle contraction, and breathing signals, in a freely moving rat. The recording configuration of this method is based on a conventional micro-drive array for cortical local field potential recordings in which tens of electrodes are accommodated, and the signals obtained from these electrodes are integrated into a single electrical board mounted on the animal's head. Here, this recording system was improved so that signals from the peripheral organs are also transferred to an electrical interface board. In a single surgery, electrodes are first separately implanted into the appropriate body parts and the target brain areas. The open ends of all of these electrodes are then soldered to individual channels of the electrical board above the animal's head so that all of the signals can be integrated into the single electrical board. Connecting this board to a recording device allows for the collection of all of the signals into a single device, which reduces experimental costs and simplifies data processing, because all data can be handled in the same data file. This technique will aid the understanding of the neurophysiological correlates of the associations between central and peripheral organs.

This study introduces a method for the simultaneous recording of local field potentials in the brain, electrocardiograms, electromyograms, and breathing signals of a freely moving rat. This technique, which reduces experimental costs and simplifies data analysis, will contribute to the understanding of the interactions between the brain and peripheral organs.

皮質局所電界電位、心電図、筋電図、呼吸リズム自由行動ラットからの同時録音

Monitoring the physiological dynamics of the brain and peripheral tissues is necessary for addressing a number of questions about how the brain controls ...

A Bedside, Single Burr Hole Approach to Multimodality Monitoring in Severe Brain Injury

Intracranial pressure (ICP) monitoring is a cornerstone of the intensive care management of patients with severe acute brain injuries, including traumatic brain injury. While elevations in ICP are common, data regarding the measurement and treatment of these ICP elevations are conflicting. There is increasing recognition that changes in the balance between supply and demand of brain tissue are critically important and therefore the measurement of multiple modalities is required. Approaches are not standard, and therefore this article provides a description of a bedside, single burr hole approach to multimodality monitoring that allows the passage of probes designed to measure not only ICP but brain tissue oxygen, blood flow, and intracranial electroencephalography. Patient selection criteria, operative procedures, and practical considerations for securing probes during critical care are described. This method is readily performed, safe, secure, and flexible for the adoption of a variety of multimodality monitoring approaches aimed at detecting or preventing secondary brain injuries.

A method of recording multimodality monitoring signals in patients with severe brain injuries using a bedside, single burr hole technique is described.

集学的治療の深刻な脳損傷の監視にベッドサイド、単一のバリの穴のアプローチ

Intracranial pressure (ICP) monitoring is a cornerstone of the intensive care management of patients with severe acute brain injuries, including traumatic ...

Standardized Hemorrhagic Shock Induction Guided by Cerebral Oximetry and Extended Hemodynamic Monitoring in Pigs

Hemorrhagic shock ranks among the main reasons for severe injury-related death. The loss of circulatory volume and oxygen carriers can lead to an insufficient oxygen supply and irreversible organ failure. The brain exerts only limited compensation capacities and is particularly at high risk of severe hypoxic damage.This article demonstrates the reproducible induction of life-threatening hemorrhagic shock in a porcine model by means of calculated blood withdrawal. We titrate shock induction guided by near-infrared spectroscopy&#160;and extended hemodynamic monitoring to display systemic circulatory failure, as well as cerebral microcirculatory oxygen depletion. In comparison to similar models that primarily focus on predefined removal volumes for shock induction, this approach highlights a titration by means of the resulting failure of macro- and microcirculation.

Hemorrhagic shock is a severe complication in seriously injured patients, which leads to life-threatening oxygen undersupply. We present a standardized method to induce hemorrhagic shock via blood withdrawal in pigs that is guided by hemodynamics and microcirculatory cerebral oxygenation.

ブタの脳オキシメトリーと拡張血行力モニタリングによって導かれる標準化された出血性ショック誘導

Hemorrhagic shock ranks among the main reasons for severe injury-related death. The loss of circulatory volume and oxygen carriers can lead to an ...

医学

Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression

The process by which cerebral perfusion is maintained constant over a wide range of systemic pressures is known as &#8220;cerebral autoregulation.&#8221; Effective dampening of flow against pressure changes occurs over periods as short as ~15 sec and becomes progressively greater over longer time periods. Thus, slower changes in blood pressure are effectively blunted and faster changes or fluctuations pass through to cerebral blood flow relatively unaffected. The primary difficulty in characterizing the frequency dependence of cerebral autoregulation is the lack of prominent spontaneous fluctuations in arterial pressure around the frequencies of interest (less than ~0.07 Hz or ~15 sec). Oscillatory lower body negative pressure (OLBNP) can be employed to generate oscillations in central venous return that result in arterial pressure fluctuations at the frequency of OLBNP. Moreover, Projection Pursuit Regression (PPR) provides a nonparametric method to characterize nonlinear relations inherent in the system without a priori assumptions and reveals the characteristic non-linearity of cerebral autoregulation. OLBNP generates larger fluctuations in arterial pressure as the frequency of negative pressure oscillations become slower; however, fluctuations in cerebral blood flow become progressively lesser. Hence, the PPR shows an increasingly more prominent autoregulatory region at OLBNP frequencies of 0.05 Hz and below (20 sec cycles). The goal of this approach it to allow laboratory-based determination of the characteristic nonlinear relationship between pressure and cerebral flow and could provide unique insight to integrated cerebrovascular control as well as to physiological alterations underlying impaired cerebral autoregulation (e.g., after traumatic brain injury, stroke, etc.).

Cerebral perfusion is maintained across a range of pressures via cerebral autoregulation. However, characterizing autoregulation requires prominent pressure fluctuations at regulated frequencies. The described protocol will show how oscillatory lower body negative pressure can generate pressure fluctuations to provide data for projection pursuit regression for quantification of the autoregulatory curve.

振動下半身陰圧と射影追跡回帰を経由して脳自己調節を評価する

The process by which cerebral perfusion is maintained constant over a wide range of systemic pressures is known as &#8220;cerebral autoregulation.&#8221; ...

生物学

How to Administer Near-Infrared Spectroscopy in Critically ill Neonates, Infants, and Children

Near infrared spectroscopy (NIRS) calculates regional tissue oxygenation (rSO2) using the different absorption spectra of oxygenated and deoxygenated hemoglobin molecules. A probe placed on the skin emits light that is absorbed, scattered, and reflected by the underlying tissue. Detectors in the probe sense the amount of reflected light: this reflects the organ-specific ratio of oxygen supply and consumption - independent of pulsatile flow. Modern devices enable the simultaneous monitoring at different body sites. A rise or dip in the rSO2 curve visualizes changes in oxygen supply or demand before vital signs indicate them. The evolution of rSO2 values in relation to the starting point is more important for interpretation than are absolute values.
A routine clinical application of NIRS is the surveillance of somatic and cerebral oxygenation during and after cardiac surgery. It is also administered in preterm infants at risk for necrotizing enterocolitis, newborns with hypoxic ischemic encephalopathy and a potential risk of impaired tissue oxygenation. In the future, NIRS could be increasingly used in multimodal neuromonitoring, or applied to monitor patients with other conditions (e.g., after resuscitation or traumatic brain injury).

This protocol is designed to assist clinicians to measure regional tissue oxygenation at different body sites in infants and children. It can be used in situations where tissue oxygenation is potentially compromised, particularly during cardiopulmonary bypass, when using non-pulsatile cardiac-assist devices, and in critically ill neonates, infants and children.

重症新生児、乳児、小児における近赤外分光の管理方法

Near infrared spectroscopy (NIRS) calculates regional tissue oxygenation (rSO2) using the different absorption spectra of oxygenated and deoxygenated ...

Real-Time Monitoring of Neurocritical Patients with Diffuse Optical Spectroscopies

Neurophysiological monitoring is an important goal in the treatment of neurocritical patients, as it may prevent secondary damage and directly impact morbidity and mortality rates. However, there is currently a lack of suitable non-invasive, real-time technologies for continuous monitoring of cerebral physiology at the bedside. Diffuse optical techniques have been proposed as a potential tool for bedside measurements of cerebral blood flow and cerebral oxygenation in case of neurocritical patients. Diffuse optical spectroscopies have been previously explored to monitor patients in several clinical scenarios ranging from neonatal monitoring to cerebrovascular interventions in adults. However, the feasibility of the technique to aid clinicians by providing real-time information at the bedside remains largely unaddressed. Here, we report the translation of a diffuse optical system for continuous real-time monitoring of cerebral blood flow, cerebral oxygenation, and cerebral oxygen metabolism during intensive care. The real-time feature of the instrument could enable treatment strategies based on patient-specific cerebral physiology rather than relying on surrogate metrics, such as arterial blood pressure. By providing real-time information on the cerebral circulation at different time scales with relatively cheap and portable instrumentation, this approach may be especially useful in low-budget hospitals, in remote areas and for&#160;monitoring in open fields (e.g., defense and sports).

Presented here is a protocol for non-invasively monitoring cerebral hemodynamics of neurocritical patients in real-time and at the bedside using diffuse optics. Specifically, the proposed protocol uses a hybrid diffuse optical systems to detect and display real-time information on cerebral oxygenation, cerebral blood flow and cerebral metabolism.

びまん性光学分光法による神経クリティカル患者のリアルタイムモニタリング

Neurophysiological monitoring is an important goal in the treatment of neurocritical patients, as it may prevent secondary damage and directly impact ...

Intra-Abdominal Pressure Measurements in Neurocritical Patients

Intra-abdominal pressure (IAP) is increasingly being recognized as an indispensable and significant physiological parameter in intensive care units (ICU). IAP has been measured in a variety of ways with the development of many techniques in recent years. The level of intra-abdominal pressure under normal conditions is generally equal to or less than 12 mmHg. Accordingly, abdominal hypertension (IAH) is defined as two consecutive IAP measurements higher than 12 mmHg within 4-6 h. When IAH deteriorates further with IAP higher than 20 mmHg along with organ dysfunction and/or failure, this clinical manifestation can be diagnosed as abdominal compartment syndrome (ACS). IAH and ACS are associated with gastrointestinal ischemia, acute renal failure, and lung injury, leading to severe morbidity and mortality. Elevated IAP and IAH may affect the cerebral venous return and outflow of the cerebrospinal fluid by increasing the intrathoracic pressure (ITP), ultimately leading to increased intracranial pressure (ICP). Therefore, it is essential to monitor IAP in critically ill patients. The reproducibility and accuracy of intra-bladder pressure (IBP) measurements in previous studies need to be further improved, although the indirect measurement of IAP is now a widely used technique. To address these limitations, we recently used a set of IAP monitoring systems with advantages of convenience, continuous monitoring, digital visualization, and long-term IAP recording and data storage in critically ill patients. This IAP monitoring system can detect intra-abdominal hypertension and potentially analyze clinical status in real time. The recorded IAP data and other physiological indicators, such as intracranial pressure, can be further used for correlation analysis to guide treatment and predict a patient&#39;s possible prognosis.

This protocol details the use of a set of intra-abdominal pressure monitoring systems with advantages of convenience, continuous monitoring, digital visualization, and long-term IAP recording and data storage in neurocritical patients to detect intra-abdominal hypertension, which is used for correlation analysis to guide treatment and predict prognoses.

Intra-abdominal pressure (IAP) is increasingly being recognized as an indispensable and significant physiological parameter in intensive care units (ICU). ...