[Circadian variation of the unstable phase in coronary disease].
To examine a circadian variation of symptom onset of acute myocardial infarction and unstable angina two years register of possible all acute coronary events in a population of Podhale was performed. The time of onset of acute coronary events was determined on the basis of patient self-report. One criterion for exclusion in the study was inability to establish reliable time of onset of acute symptoms. The study group comprised 366 patients aged 61 years, range 29-89 years, men 212, mean age 59, women 154, mean age 64. The distribution of symptom onset within 24 time intervals tested for uniformity by a chi-square test for goodness of fit shows significant (p < 0.01) morning peak between 7:00-9:00 A.M. in whole group and in a subgroup of AMI. No significant evening peak (17:00-18:00 P.M.) was also found in subgroup of AMI.
Szpot
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Oddziału Kardiologii Szpitala ZOZ, Zakopanem.
Zalewski
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M
D000328:Adult; D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D000789:Angina, Unstable / Q000503:physiopathology*; D016009:Chi-Square Distribution; D002940:Circadian Rhythm / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*