Effect of a Meal on Cardiac Performance in Patients with Coronary Artcry Disease.
- Author:
Hun Sik PARK
1
;
Bong Ryul LEE
;
Eui Ryong JUNG
;
Dong Hoon GWAK
;
Dong Hun YANG
;
Seung Chul SHIN
;
Jong Hyun HWANG
;
Yong Geun JO
;
Sung Chul CHAE
;
Jae Eun JEON
;
Eui Hyun PARK
Author Information
1. Department of Internal Medicine, School of Medicine, Kyungpook National University, Taegu, Korea.
- Publication Type:Original Article
- Keywords:
Coronary artery disease;
Mixed meal;
Cardiac performance
- MeSH:
Cardiac Output;
Coronary Artery Disease;
Echocardiography;
Exercise Tolerance;
Fasting;
Heart Rate;
Humans;
Meals*;
Myocardial Infarction;
Stroke Volume
- From:Journal of the Korean Society of Echocardiography
2000;8(1):54-58
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: It has been well recognized that exercise tolerance and angina threshold in patients with coronary artery disease (CAD) are reduced after a meal. But precise mechanism leading to the postprandial worsening of angina has yet to be adequately defined. This study was undertaken to determine the effect of a mixed meal on cardiac performance and heart rate variability (HRV) in patients with CAD. METHODS: 24 patients with angina or myocardial infarction were studied. Echocardiographic examination and heart rate variability test were performed in the fasting state and the other 40-60 minutes after a 600-800 kcal mixed meal. RESULTS: In the postprandial state, resting heart rate was significantly increased by 5.2% from 64.8+/-10.69 beats/min to 68.2+/-10.2 beats/min (p<0.01), stroke volume by 8.1% from 59.6+/-17.3 ml to 64.4+/-18.1 ml (p<0.01), cardiac output by 14.2% from 3.8+/-1.06 to 4.3+/-1.21 (p<0.01). E wave and A wave of mitral filling flow and E/A ratio were not significantly different in the fasting and postprandial tests. But DT and IVRT were significantly increased in the postprandial state (p<0.05, p<0.01 respectively). HRV was not different in the fasting and postprandial state. CONCLUSIONS: In patients with CAD, a 600-800 kcal mixed meal significantly increased resting heart rate, stroke volume, cardiac output, DT and IVRT.
