Abstract
Changes in regional blood flow and regional vascular resistance during hypothermia in dogs with intact or abolished shivering mechanisms were measured with sine-wave electromagnetic flowmeters. In animals with shivering intact, cooling produced a fall in renal and carotid blood flows, despite a rise or no change in cardiac output. The fall was caused by an increase in renal and carotid vascular resistances. Femoral blood flow increased because of a decrease in vascular resistance. In animals with shivering abolished, cooling evoked a fall in the cardiac output and in renal and femoral blood flows, due to an increase in the vascular resistance. Upon rewarming, femoral flow immediately rose to values far above control. Carotid flow increased during cooling because of a decline in carotid resistance. Such a decline might have been related to the elevated blood Pco2 observed in the nonshivering animals.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
