Circadian variation in the frequency of onset of chest pain in elderly patients with acute myocardial infarction.
This study reports the time of onset of chest pain in 792 consecutive elderly patients admitted to a coronary care unit with myocardial infarction during a 10-year period. Statistical analysis demonstrated a bimodal frequency distribution with peaks in the time of onset of chest pain between 23 h 30 and 00 h 30 and between 06 h 30 and 08 h 30.
Thompson
D R
DR
Coronary Care Unit, Leicester General Hospital.
Pohl
J E
JE
Sutton
T W
TW
D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D002940:Circadian Rhythm; D003430:Cross-Sectional Studies; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D009203:Myocardial Infarction / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D012307:Risk Factors