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Some chronobiological characteristics of cerebral strokes
T Markova1, T Vasileva, V Naidenov
1Department of Neurology, Higher Medical Institute, Plovdiv, Bulgaria.
Introduction:
The chronobiological studies of cerebro-vascular diseases, including acute cerebro-vascular incidents are scanty.
Methods:
The authors study retrospectively the case histories of 352 patients with CS and lethal outcome during a 5-year period /1991-1995/. The data was analyzed statistically by determining percentages and standard errors and using graphical analysis.
Results:
The peaks of mortality rate of cerebral stroke coincide with that of the incidence rate. The onset of ICS is most frequently in the hour intervals 8-12 and 14-17 o'clock, while of HCS--8-12 o'clock. The lethal outcome from ICS is predominantly in the hour interval 5-7 o'clock, while of HCS--4-9 o'clock.
Conclusions:
The hour of onset and the hour of death from ischemic and hemorrhagic cerebral stroke have discrepant peak hours.