https://scholars.lib.ntu.edu.tw/handle/123456789/621575
Title: | Transesophageal echocardiographic assessment of mitral valve position and pulmonary venous flow during cardiopulmonary resuscitation in humans | Authors: | MATTHEW HUEI-MING MA HWANG, JUEY-JEN LING-PING LAI Wang, Shih-Ming GUAN-TARN HUANG Shyu, Kou-Gi Ko, Yu-Lin JIUNN-LEE LIN WEN-JONE CHEN Hsu, Kwan-Lih Chen, Jin-Jer Kuan, Peiliang Tseng, Yung-Zu Lien, Wen-Pin |
Keywords: | blood flow; cardiac arrest; cardiopulmonary resuscitation; echocardiography | Issue Date: | 15-Aug-1995 | Publisher: | Lippincott Williams and Wilkins | Journal Volume: | 92 | Journal Issue: | 4 | Start page/Pages: | 854 | Source: | Circulation | Abstract: | Background: The mechanisms of blood flow during closed-chest cardiopulmonary resuscitation (CPR) in humans have been debated since the technique was first described in 1960. Two competing models, the cardiac pump theory and the thoracic pump theory, have been proposed, and some investigators have used mitral valve position during the downstroke of chest compression to distinguish between them. Previous studies using either transthoracic or transesophageal echocardiography have yielded conflicting results, and there have been few, if any, hemodynamic or echocardiographic studies on pulmonary venous flow (PVF) during CPR. Methods and Results: In this study, transesophageal two-dimensional and pulsed Doppler echocardiography were used to study mitral valve position and flow, together with PVF, in 20 adult patients undergoing manual CPR. In the 17 patients who could be analyzed, the mitral valve closed in 5 patients (group 1) during chest compression but stayed open or opened further in the remaining 12 patients (group 2). Peak forward mitral flow occurred during the release phase in group 1 but during the compression phase in group 2. During chest compression, PVF occurred in the forward direction (from the pulmonary vein to the left atrium) in 8 of the group 2 patients (group 2a) and in the backward direction (from the left atrium to the pulmonary vein) in all group 1 patients and the remaining 4 patients in group 2 (group 2b). The downtime (time from collapse to CPR) was significantly shorter (P[removed] |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029147364&doi=10.1161%2f01.CIR.92.4.854&partnerID=40&md5=d0e44d62c9b1c4900a452febd68e77c1 https://scholars.lib.ntu.edu.tw/handle/123456789/621575 |
ISSN: | 0009-7322 | DOI: | 10.1161/01.CIR.92.4.854 |
Appears in Collections: | 醫學系 |
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