The Influence of age on Doppler Parameters in Acute Myocardial Infarction.
- Author:
Won KIM
;
Gyu Chong CHO
;
Se Hyun OH
;
Young Soo LEE
;
Eun Ju LEE
;
Jin Sook HONG
;
Young Diek KIM
- Publication Type:Original Article
- Keywords:
Acute myocardial infarction;
Doppler parameters;
Myocardial performance index
- MeSH:
Aged;
Chest Pain;
Diagnosis;
Echocardiography, Doppler;
Electrocardiography;
Humans;
Mass Screening;
Myocardial Infarction*;
Stroke Volume
- From:Journal of the Korean Geriatrics Society
2000;4(4):244-250
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: When using the data based on history, ECG and cardiac enzyme, two to eight percent of patients with acute chest pain are incorrectly perceived as being at low risk and therefore sent home mistakenly. It is known that changes of Doppler parameters appear first, before regional asynergy in 2D-echocardiography, electrocardiographic change and chest pain. however, the clinical application of Doppler information in the diagnosis of acute myocardial infarction remains uncertain, especially in elderly patients. METHODS: From March 1998 to March 1999, pulsed wave Doppler echocardiography was performed in patients with acute myocardial infarction within 6 hours, and Doppler parameters were evaluated. Each Doppler parameters were compared between elderly (age > or =65) and young(age < 65) groups. RESULT: E peak velocity & E/A ratio showed significant differences between two groups(p<0.05). especially, Stroke volume, isovolumic relaxtion time & myocardial performace index showed marked difference(p<0.01). CONCLUSION: Diastolic Doppler parameters of elderly group were significantly changed than younger group. however systolic Doppler parameters were relatively preserved. Among Doppler parameters, myocardial performance index is a conceptrally new, simple and reproducible Doppler index of combined systolic and diastolic myocardial performance, and it may be useful as screening test for patients with AMI in elderly patients.
