|
KMID : 0338420050200010021
|
|
The Korean Journal of Internal Medicine
2005 Volume.20 No. 1 p.21 ~ p.25
|
|
|
Terminal QRS Complex Distortion on the Admission Electrocardiogram in Anterior Acute Myocardial Infarction and Association with Residual Flow and Infarct Size after Primary Angioplasty
|
|
Yang HS
Lee CW/Hong MK/Moon DH/Kim YH/Lee SG/Han KH/Kim JJ/Park SW/Park SJ
|
|
|
Abstract
|
|
|
BACKGROUND: Terminal QRS complex distortion on admission is a simple and reliable predictor of infarct size in patients with acute myocardial infarction (AMI). It is uncertain, however, whether this reflects reduced myocardial perfusion of the infarct area and a larger area of the myocardium at risk. This study was conducted to investigate whether terminal QRS distortion complex on admission is a reliable predictor of reduced residual flow and a larger area of the myocardium at risk compared to patients who are admitted without a terminal QRS distortion.
METHODS: We evaluated the relationship between terminal QRS complex distortion and residual flow to the infarct zone and risk area in 46 anterior AMI patients undergoing primary angioplasty. 99mTc-sestamibi imaging was performed at baseline and 5-9 days after angioplasty. The study population was divided into those with (Group I, n=16) and without (Group II, n=30) terminal QRS complex distortion.
RESULTS: Baseline characteristics were similar between the two groups. The area of the myocardium at risk was higher in Group I (59.9 +/- 15.3%) than in Group II (48.6 +/- 13.7%, p<0.05; mean+SD) while the nadir measurement of the residual flow was lower in Group I (0.10 +/- 0.07) than in Group II (0.16 +/- 0.09, p<0.05). Although the final infarct size was significantly higher in Group I (40.8 +/- 17.2%) than in Group II (27.1 +/- 18.1%, p<0.05), the myocardial salvage index did not differ significantly between the two groups.
CONCLUSION: Terminal QRS complex distortion seems to be associated with less residual flow to the infarct zone, a larger risk area and greater infarct size in patients with anterior AMI.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
    
|