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KMID : 0368119990290101105
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Korean Circulation Journal
1999 Volume.29 No. 10 p.1105 ~ p.1111
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Hemodynamic Effects of Simultaneous Sterno-Thoracic Cardiopulmonary Resuscitation (SST-CPR) in Canine Model of Cardiac Arrest
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1황성오/1Sung Oh Hwang
1조준휘/1오범진/1강구현/1김성환/1문중범/1이서영/1박해상/1이강현/2이승환/2윤정한/2최경훈/3이윤선/1Jun Hwi Cho/1Bum Jin Oh/1Ku Hyun Kdang/1Sung Hwan Kim/1Joong Bum Moon/1Seo Young Lee/1Hae Sang Park/1Kang Hyun Lee/2Seung Hwan Lee/2Jung Han Yoon/2Kyung Hoo
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Abstract
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Background and Objectives : No existing device for cardiopulmonary resuscitation
(CPR) is designed to exploit both the “cardiac pump” and the “thoracic pump”
simultaneously. This study was designed to assess the hemodynamic effects of
simultaneous sterno-thoracic CPR (SST-CPR) vs. standard CPR (S-CPR) using a
mechanical resuscitator in a canine model of cardiac arrest.
Device Description : We have built a device that depresses the sternum and
circumferentially constricts the thorax simultaneously. This device has two components.
The first component is a piston, which depresses the sternum. The second is a
circumferential strap that constricts the thorax as the piston is pushed down on the
sternum.
Materials and Methods : Twelve domestic dogs were enrolled in this study. After
catheterizations to measure pressures from the aorta and the right atrium, ventricular
fibrillation was induced by passing AC current to the right ventricle. After 4 minutes of
cardiac arrest, S-CPR and SST-CPR were performed alternatively. Aortic pressure, right
atrial pressure, cardiac output, and end tidal CO2 were measured while
each method of CPR was performing. Results : SST-CPR resulted in significantly higher
mean arterial pressure than S-CPR (68.9±16.1 vs 30.5±10.0㎜Hg, p<0.01). SST-CPR
could generate higher coronary perfusion pressure than S-CPR (47.0±11.4 vs 17.3±8.9
㎜Hg, p<0.01). End tidal CO2 tension was also higher during SST-CPR
than S-CPR (11.6±6.1 vs 2.17±3.3㎜Hg, p<0.01).
Conclusion : Simultaneous sternothoracic cardiopulmonary resuscitation is a new
method of cardiopulmonary resuscitation, which can generate better hemodynamic effects
than standard cardiopulmonary resuscitation.
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