| Compression of the left ventricular outflow tract during cardiopulmonary resuscitation. | |
| | |
MedLine Citation:
|
PMID: 19732038 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVES: This prospective observational study was performed to investigate if the hand position used for external chest compressions is in an optimal position for compressing the ventricles during standard cardiopulmonary resuscitation (CPR). METHODS: Transesophageal echocardiography (TEE) was performed during standard CPR in 34 patients with nontraumatic cardiac arrest (24 males, mean +/- standard deviation [SD] age = 56 +/- 12 years). On the recorded image of TEE, an area of maximal compression (AMC) was identified, and the degree of compression at the AMC and the left ventricular stroke volume was calculated. RESULTS: A significant narrowing of the left ventricular outflow tract (LVOT) or the aorta was noted in all patients, with the degree of compression at the AMC ranging from 19% to 83% (mean +/- SD = 49 +/- 19%). The AMC was found at the aorta in 20 patients (59%) and at the LVOT in 14 patients (41%). A significant narrowing of more than 50% of the diameter at the end of the relaxation phase occurred in 15 patients (44%). On linear regression, the left ventricular stroke volume was correlated with the location of the AMC (R(2) = 0.165, p = 0.017). CONCLUSIONS: The outflow of the left ventricle is affected during standard CPR, resulting in varying degrees of narrowing in the LVOT and/or the aortic root. |
| | |
Authors:
|
Sung Oh Hwang; Pei Ge Zhao; Han Joo Choi; Kyung Hye Park; Kyung Chul Cha; So Mi Park; Sang Chul Kim; Hyun Kim; Kang Hyun Lee |
Related Documents
:
|
7237718 - Clinical and experimental studies on electromechanical dissociation. 15548178 - Side effects of cardiopulmonary bypass: what is the reality? 7113938 - World survey of the common cardiac malformations: developmental error or genetic variant? 9833718 - Ischemic threshold during cold blood cardioplegic arrest: monitoring with tissue ph and... 910678 - The pathophysiologic basis of acute coronary insufficiency. observations favoring the h... 10769988 - Coronary artery bypass grafting in patient with malignant neoplasm. efficacy of coronar... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-09-03 |
Journal Detail:
|
Title: Academic emergency medicine : official journal of the Society for Academic Emergency Medicine Volume: 16 ISSN: 1553-2712 ISO Abbreviation: Acad Emerg Med Publication Date: 2009 Oct |
Date Detail:
|
Created Date: 2009-10-05 Completed Date: 2010-01-27 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9418450 Medline TA: Acad Emerg Med Country: United States |
Other Details:
|
Languages: eng Pagination: 928-33 Citation Subset: IM |
Affiliation:
|
Department of Emergency Medicine, Wonju College of Medicine, Institute of Lifelong Health, Yonsei University Wonju, Wonju, Republic of Korea. shwang@yonsei.ac.kr |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Cardiopulmonary Resuscitation
/
methods*,
standards Coronary Circulation* Echocardiography, Transesophageal Female Heart Arrest / therapy*, ultrasonography Heart Ventricles* Humans Image Processing, Computer-Assisted Linear Models Male Middle Aged Prospective Studies Stroke Volume |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evaluating emergency care research networks: what are the right metrics?
Next Document: Region of birth, income and breastfeeding in a Swedish county.