PATTERN OF LEFT MAIN STEM STENOSIS

Abstract

Objective: To find out the pattern of left main stems disease in cardiology
department of tertiary care hospital.
Methodology: This descriptive study was conducted from the properly
maintained record of 3 years (January 2007 to December 2010) of cardiac
catheterization lab of cardiology unit, a 1400 bedded, tertiary care hospital.
Results: Total numbers of cases were 3950 in which Coronary angiographies
were 2058. Among them patients having normal vessels were 497 (24.14%),
single vessel disease (SVD) 389 (18.9%), double vessels disease (DVD) 350
(17%), triple vessels disease (TVD) 822 (39.94%) and patients having left main
stem disease were (LMS) 228 (11.03%). Mean age of the patients having LMS
disease were 57.2 + 10.1yrs. Male were 77.2%. Diabetics were 151 (66.23%).
Mean LMS lesion was 50.7 % + 21 of its diameter, in which more than 50% of the
segment involved were 140 (61.41%). Locations of the lesion is 4 (1.7%)
proximal, 49 (21.49%) mid and 175 (76.7%) distal LMS. Presentation of patients
having LMS disease was stable angina in 136 (59.64%). Numbers of coronary
vessels involved were single vessels disease in 21 (9.2%), double vessels
disease in44 (19.3%) and triple vessels disease in 163 (71.5%) patients.
Conclusion: Left main stem disease is common angiographic finding and is
associated with multivessel coronary artery disease and diabetes mellitus. It
commonly occurs in distal part of vessel.