[Perioperative cardiovascular complications in patients with hypertrophic cardiomyopathy].
BACKGROUND
The aim of this study was to examine the incidence of cardiac complications in patients with hypertrophic cardiomyopathy (HCM) during noncardiac surgery.


METHODS
A retrospective study was made for surgical patients in the period of 1989-2000 at Kitasato University Hospital.


RESULTS
Thirty out of 66000 patients were preoperatively diagnosed as HCM. Sixty percent of the HCM patients had one or more perioperative cardiovascular complications. There were perioperative congestive heart failure in 3 patients (10%), and myocardial ischemia in 4 patients (13%). However, there were no myocardial infarction, no life-threatening dysarrthythmia and no cardiac death. Factors which appeared to be associated with the perioperative cardiovascular complications were the type of HCM (HOCM), major surgery, general anesthesia and preoperative medication with a beta-blocker or a calcium channel blocker.


CONCLUSIONS
It is suggested that patients with HCM undergoing noncardiac surgery have a high incidence of cardiac complications such as congestive heart failure and myocardial ischemia.
Kuroiwa
Masayuki
M
Department of Anesthesiology, Kitasato University School of Medicine, Sagamihara 228-8520.
Arai
Masayasu
M
Ueno
Tetsuo
T
Takenaka
Tomoaki
T
Okamoto
Hirotsugu
H
Hoka
Sumio
S
D000328:Adult; D000368:Aged; D002312:Cardiomyopathy, Hypertrophic / Q000601:surgery*; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D005260:Female; D006333:Heart Failure / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000453:epidemiology; D011183:Postoperative Complications / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors