Document Detail

Routine use of the left internal mammary artery graft in the elderly.
MedLine Citation:
PMID:  2306139     Owner:  NLM     Status:  MEDLINE    
Left internal mammary artery (LIMA) grafts have better long-term patency rates than do saphenous vein grafts and result in improved late survival. The present study was undertaken to assess the results of LIMA grafting in the elderly. From 1980 through 1988, 723 patients 70 years of age or older had isolated coronary artery bypass grafting performed. During the first 5 years, only 11% of the elderly patients received LIMA grafts, whereas 86% having coronary artery bypass grafting since 1985 had LIMA grafts. Since 1986, LIMA use in the elderly has become routine, with 92% of patients receiving internal mammary artery grafts. During the first 5 years, elderly patients had a hospital mortality rate of 9.3%. Since 1985, the hospital mortality rate fell to 5.5%. In addition, the occurrence of major surgical complications was either unchanged or reduced in patients receiving LIMA grafts. Furthermore, late follow-up indicates a significantly improved 4-year survival rate in patients with internal mammary artery grafts compared with those without: 86 +/- 0.02% versus 77 +/- 0.03% (p less than 0.01). Analysis of multiple potential risk factors for early mortality was performed using multiple logistic regression and late survival using the Cox proportional hazards model. Although unmeasured predictor variables may confound retrospective analyses, LIMA grafting appears to be an independent predictor both of improved early and late survival.
T J Gardner; P S Greene; M F Rykiel; W A Baumgartner; D E Cameron; A S Casale; V L Gott; L Watkins; B A Reitz
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of thoracic surgery     Volume:  49     ISSN:  0003-4975     ISO Abbreviation:  Ann. Thorac. Surg.     Publication Date:  1990 Feb 
Date Detail:
Created Date:  1990-03-23     Completed Date:  1990-03-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  15030100R     Medline TA:  Ann Thorac Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  188-93; discussion 193-4     Citation Subset:  AIM; IM    
Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, MD 21205.
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MeSH Terms
Case-Control Studies
Follow-Up Studies
Internal Mammary-Coronary Artery Anastomosis / mortality,  statistics & numerical data*
Longitudinal Studies
Postoperative Complications
Risk Factors
Survival Rate
Veins / transplantation

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

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