Hypovolemia, hypothermia, and hypotension are common postoperative findings
that predispose the critically ill patient to secondary complications. Thi
s patient population is especially vulnerable to sepsis, hypoxia, and immun
e dysfunction. Careful monitoring is essential for early recognition of pot
entially life-threatening physiologic derangements. Early and aggressive in
tervention may help minimize systemic insult before it progresses to acute
respiratory distress syndrome, acute renal failure, disseminated intravascu
lar coagulation, or multiple organ failure.