Determinants of in-hospital death in left main coronary artery myocardial infarction complicated by cardiogenic shock.
BACKGROUND
Acute myocardial infarction (AMI) due to left main coronary artery disease is associated with significantly elevated morbidity and mortality. The aim of this study was to identify the predictors of in-hospital death from left main AMI complicated by cardiogenic shock.


METHODS
Clinical record review identified a total of 25 cases of left main AMI with cardiogenic shock. Patients' background characteristics, laboratory data, and angiographic findings were analyzed according to the in-hospital mortality.


RESULTS
In this patient subset, in-hospital mortality (60%) was associated with a history of hypertension (p=0.02) and a higher heart rate (p=0.02). Furthermore, in-hospital mortality was also associated with a complete right bundle branch block (CRBBB) pattern in the admission ECG (p=0.01) and low HCO(3)(-) (p=0.0004). In stepwise logistic regression analysis, a CRBBB pattern (OR 48.59, 95% CI 1.34-1768.10, p=0.03) and low HCO(3)(-) (OR 0.62, 95% CI 0.40-0.94, p=0.02) were found to be independent predictors of mortality.


CONCLUSIONS
Left main AMI with cardiogenic shock was associated with high in-hospital mortality. A CRBBB pattern in the ECG on admission and a low HCO(3)(-) concentration were significant independent predictors of in-hospital death.
Sakakura
Kenichi
K
Division of Cardiovascular Medicine, Department of Integrated Medicine I, Jichi Medical University Saitama Medical Center, Omiya, Japan.
Kubo
Norifumi
N
Hashimoto
Shigemasa
S
Ikeda
Nahoko
N
Funayama
Hiroshi
H
Hirahara
Taishi
T
Sugawara
Yoshitaka
Y
Yasu
Takanori
T
Ako
Junya
J
Kawakami
Masanobu
M
Momomura
Shin-ichi
S
D002037:Bundle-Branch Block / Q000150:complications; D017023:Coronary Angiography; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D006973:Hypertension / Q000150:complications; D007297:Inpatients; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality* / Q000628:therapy; D012044:Regression Analysis; D012770:Shock, Cardiogenic / Q000150:complications*