Cardio-respiratory responses to cool ambient temperature differ with sleep state in neonatal lambs.


1. Responses to cool ambient temperature were tested with reference to the sleep-wakefulness cycle in six chronically instrumented newborn lambs which were exposed to warm (20-25 degrees C) and cool (10-15 degrees C) ambient temperatures (Ta) in fifteen studies. 2. We measured cardio-respiratory variables (cardiac output, heart rate, stroke volume… (More)