Outcome of cardiogenic shock complicating acute myocardial infarction.
OBJECTIVE
To analyze the characteristics and in-hospital outcome of patients with cardiogenic shock (CS) complicating acute myocardial infarction (AMI) and to evaluate the influence of urgent coronary revascularization on in-hospital mortality.


METHODS
Descriptive study.


METHODS
The Aga Khan University Hospital, Karachi. January 2001 to December 2001.


METHODS
All consecutive patients with AMI and CS, admitted at The Aga Khan University Hospital, Karachi Pakistan, during the year 2001 were reviewed. A pre-designed questionnaire was used for data collection. Analysis was done using the SPSS statistical package.


RESULTS
Out of 615 patients with AMI, 53 (8.6%) had CS. Mean age was 60.9 +10.7 years. 62.3% were men, 52.8% were hypertensive and 43.4% were diabetic. Most infarcts were anterior in location (56.6%). Thrombolytic therapy (Streptokinase) was administered to 43.5% of patients with ST segment elevation myocardial infarction. 64.2% required ventilatory support while swan ganz was used in 37.7%. Intra-aortic balloon pump was inserted in 39.6%. Ventricular tachycardia was the most common complication (39.6%). Overall in-hospital mortality was 54.7%. CS associated with mechanical complications had 80% in-hospital mortality. In patients without mechanical complications (n=48), in-hospital mortality was significantly lower in the revascularization group (31.6% vs. 65.5%, p-value = 0.021). However, there were significant differences in the baseline characteristics in the two groups because of the selection bias.


CONCLUSIONS
CS occurring in patients with AMI has an extremely poor prognosis. Patients selected for revascularization strategy has favorable in-hospital outcome.
Tipoo
Fateh Ali
FA
Department of Medicine, Section of Cardiology, The Aga Khan University Hospital, Karachi, USA. ataquraishi@hotmail.com
Quraishi
Ata Rehman
AR
Najaf
Syed Mohammad
SM
Kazmi
Khawar Abbas
KA
Jafary
Fahim
F
Dhakam
Sajid
S
Shafquat
Azam
A
D000368:Aged; D002407:Catheterization, Swan-Ganz; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications* / Q000401:mortality / Q000628:therapy; D009204:Myocardial Revascularization; D012770:Shock, Cardiogenic / Q000209:etiology* / Q000401:mortality / Q000628:therapy; D015912:Thrombolytic Therapy; D016896:Treatment Outcome