Document Detail


Effects of cardiopulmonary bypass surgery on coronary flow in children assessed with transthoracic Doppler echocardiography.
MedLine Citation:
PMID:  17483244     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Perturbation of coronary blood flow (CF) is an important contributor to myocardium-related complications. The study was primarily designed to assess the impact of cardiopulmonary bypass (CPB) surgery on CF by aid of transthoracic Doppler echocardiography. Changes in CF after off-pump coarctation surgery were also studied. All ultrasounds were performed before and 5 +/- 1 days after surgery. Eighteen children underwent CPB surgery of ventricular left-to-right shunts at the mean age of 6 mo, while off-pump surgery (aortic coarctectomy) was undertaken at the mean age of 10 days in 12 children. After CPB surgery, both left anterior descending coronary artery mean diameter and basal CF increased from 1.7 +/- 0.3 to 2.1 +/- 0.4 mm (P = 0.001) and 27 +/- 10 to 47 +/- 15 ml/min (P = 0.0001), respectively. These two coronary variables decreased after off-pump coarctectomy: left anterior descending coronary artery mean diameter from 1.8 +/- 0.1 to 1.7 +/- 0.1 mm (P = 0.06), and CF from 44 +/- 12 to 25 +/- 8 ml/min (P = 0.001). The findings are in keeping with the hypothesis that the previously reported impairment of coronary flow reserve after CPB surgery could be due to increase in basal coronary flow after CPB. Off-pump coarctectomy seems to have little impact on CF, as the postsurgical decline in flow in these patients seems to relate to the reduction in cardiac pressure afterload.
Authors:
Elhadi H Aburawi; Ansgar Berg; Petru Liuba; Erkki Pesonen
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-05-04
Journal Detail:
Title:  American journal of physiology. Heart and circulatory physiology     Volume:  293     ISSN:  0363-6135     ISO Abbreviation:  Am. J. Physiol. Heart Circ. Physiol.     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-03     Completed Date:  2007-09-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100901228     Medline TA:  Am J Physiol Heart Circ Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  H1138-43     Citation Subset:  IM    
Affiliation:
Division of Pediatric Cardiology/Department of Pediatrics, Lund University Hospital, Getingvägen, SE-221 85 Lund, Sweden. elhadi.aburawi@med.lu.se
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MeSH Terms
Descriptor/Qualifier:
Aortic Coarctation / physiopathology,  surgery,  ultrasonography*
Cardiac Surgical Procedures*
Cardiopulmonary Bypass*
Case-Control Studies
Coronary Circulation*
Coronary Vessels / physiopathology,  surgery,  ultrasonography*
Echocardiography, Doppler*
Heart Septal Defects, Atrial / physiopathology,  surgery,  ultrasonography*
Heart Septal Defects, Ventricular / physiopathology,  surgery,  ultrasonography*
Humans
Infant
Infant, Newborn
Observer Variation
Reproducibility of Results
Research Design
Treatment Outcome
Ventricular Function, Left

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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