Relation between Preinfarction Angina and Coronary Collateral Circulation in Patients with Acute Myocardial Infarction
Abstract: Coronary collateral
circulation conduits an alternative blood flow to the ischemic myocardium in
the setting of coronary artery occlusion which can prevent the infarction area
to extend more widely. Well-developed coronary collaterals are closely related
with the presence of preinfarction angina. However, the duration of
preinfarction angina which can induce well-developed coronary collateralization
is in controversy. The aim of this study was to evaluate the relation between
duration of preinfarction angina and coronary collaterals circulation in
patients with acute myocardial infarction.
Methods: This cross-sectional study was conducted from May to November
2013 in Dr. Hasan Sadikin General Hospital, Bandung, Indonesia. Seventy three
acute myocardial infarction (AMI) patients were included in the study. The
patients were divided into Group 1 (<7 days) and Group 2 (≥7 days) based on
their preinfarction angina history. The coronary collaterals were assesed and
graded as good (Rentrop score 2−3) and poor (Rentrop score 0−1).Statistical
analysis was performed using the chi-square test.
Result: The presence of a well-developed coronary collateral was not
significantly different in <7days than ≥7 days duration of preinfarction
angina [50.8% v 75.0%, p=0.124].
Conclusions: There is no relation between the duration of preinfarction
angina and coronary collaterals circulation in patients with acute myocardial
infarction.
Author: Achmad Shidiq, Syarief
Hidayat, Januarsih Iwan Rachman
Journal Code: jpkedokterangg160093
