Development of Implantable cardiac echo probe -Asa Monitor for Cardiac Surgery

开发植入式心脏超声探头-Asa 心脏手术监视器

基本信息

批准号：
09557110
负责人：
YOZU Ryohei
金额：
$ 1.92万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

In cardiac surgery, postoperative cardiac function is generally monitored by electocardiography (ECG), by invasive measurements of blood pressure, such as aortic pressure, and by the determination of hemodynamic variables, such as cardiac output, with a Swan-Ganz catheter. In recent years, transesophageal echocardiography has been introduced into clinical use, but, for various reasons, including distress and the difficulty of application in postoperative unconscious patients, it is not a popular method of monitoring, Since 1991, we have been developing a small implantable echocardiography probe. This probe was used in 31 patients with severely reduced left ventricular function who underwent open heart surgery and its clinical utility was well demonstrated. No deaths occurred in this series, This new implantable echocardiography probe allowed postoperative cardiac function to be monitored in real-time, The ejection fraction (EF), the cardiac output, the status of valves after valve replacement and/or valvuloplasty, the left and right ventricular wall motion, the presence of cardiac tamponade, and other variables could be assessed. The echocardiography probe can be positioned at any site at which specific information is desired during surgery. It can be inserted as easily as a pericardial drain tube and is removed in the same manner when no longer necessary. This probe has the potential to be very useful for monitoring patients on assisted circulation after open heart surgery.

在心脏手术中，术后心脏功能通常通过选心电图（ECG），通过侵入性测量血压（例如主动脉压力），并通过确定血液动力学变量（例如心脏输出），并用SWAN-GANZ导管来监测。近年来，经食管超声心动图已被引入临床用途中，但是出于各种原因，包括困扰和在术后无意识的患者中的应用困难，这不是一种流行的监测方法，自1991年以来，我们一直在开发一种小型的植入式植入式超声心动图术探针。该探针用于31例左心室功能严重降低的患者，他们接受了心脏手术及其临床效用。该系列没有死亡，这种新的可植入的超声心动图检测允许实时监测术后心脏功能，射血分数（EF），心脏输出，瓣膜更换后的瓣膜状态和/或瓣膜成形术后的瓣膜状态，左和右心壁运动，可以评估心脏染色体的存在，并可以评估其他Voaliable和其他Variaia。超声心动图探针可以放在手术期间需要特定信息的任何位置。它可以像心包排水管一样容易插入，并在不再需要时以相同的方式去除。该探针有可能非常有用，可用于监测心脏手术后辅助循环的患者。