What effect does rewarming have on perfusion of the splanchnic viscera during surgery?

Rewarming during surgery typically increases perfusion to the splanchnic viscera. When a patient is hypothermic, blood flow to the splanchnic area may be reduced due to vasoconstriction, which is a body's response to conserve heat. As the patient's temperature increases during rewarming, the blood vessels dilate, which enhances blood flow and perfusion to the abdominal organs, including the liver, intestines, and pancreas.

Increased perfusion during rewarming benefits organ function and oxygen delivery, helping to mitigate potential ischemic injury that can occur due to reduced blood flow during hypothermia. Moreover, maintaining adequate perfusion in the splanchnic region is crucial for metabolic processes and overall patient recovery post-surgery.