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Effect of ambient temperature on arterial pressure variability during sleep in the rat
Author(s) -
SEI HIROYOSHI,
MORITA YUSUKE
Publication year - 1996
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1046/j.1365-2869.1996.00007.x
Subject(s) - non rapid eye movement sleep , sleep (system call) , mean arterial pressure , heart rate , blood pressure , anesthesia , medicine , cardiology , psychology , eye movement , ophthalmology , computer science , operating system
Changes in mean arterial pressure (MAP) and heart rate (HR) during sleep were recorded at three ambient temperatures ( T a : 16, 22 and 28°C). MAP and HR during sleep increased with lowering of T a . The increase in MAP during the transition from NREM to REM sleep was decreased by lowering the T a . At 28°C, the average HR increased in going from NREM to REM sleep, while, at 16°C, it decreased. The coefficient of variation (CV%) of the MAP during REM sleep decreased as the T a was lowered, while that seen during NREM sleep was unchanged. This study suggests that T a has a greater effect than sleep stage on the MAP and HR, and that MAP variability during REM sleep is greater at higher T a .