| Echocardiographic observations during cardiopulmonary resuscitation: a preliminary report. | |
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MedLine Citation:
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PMID: 4053637 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Echocardiographic studies were conducted during CPR to establish whether blood flow through the heart was passive or whether cardiac compression accounted for forward blood flow. M-mode and two-dimensional echocardiographic studies were performed on anesthetized minipigs during external CPR and open-chest cardiac massage. With external compression, mitral valve closure was observed during compression systole and valve opening during compression diastole. The aortic valve opened during compression systole and closed during compression diastole. Identical observations were made during open-chest cardiac compression. Left ventricular area was computed during compression systole. A 24% reduction in the area of the left ventricle during precordial compression confirmed left ventricular ejection of blood. Saline tracer was injected into the right and left ventricles. Echocardiographic observation of the tracer demonstrated forward blood flow across the pulmonic and aortic outflow tracts during compression. There was minimal valvular regurgitation. These findings support the concept of cardiac compression as a mechanism for forward blood flow during open- and closed-chest CPR. |
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Authors:
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H G Deshmukh; M H Weil; E C Rackow; R Trevino; J Bisera |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Critical care medicine Volume: 13 ISSN: 0090-3493 ISO Abbreviation: Crit. Care Med. Publication Date: 1985 Nov |
Date Detail:
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Created Date: 1985-12-02 Completed Date: 1985-12-02 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0355501 Medline TA: Crit Care Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 904-6 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Coronary Circulation* Echocardiography Heart Arrest / physiopathology*, therapy Heart Massage Heart Valves / physiopathology Heart Ventricles / anatomy & histology Movement Resuscitation* / methods Swine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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