This study was designed to identify whether significant energy deficits occ
ur when feedings are (1) withheld perioperatively and (2) withheld because
of gastric ileus. We studied patients with more than 20% total body surface
area burns, who had survived at least one surgery, and who were intubated
within 3 days of admission. Energy needs and energy received from enteral f
eedings were summed across the period during which the patients underwent s
urgical procedures. The difference between energy needed and energy receive
d was divided into that caused by feedings being withheld perioperatively a
nd that caused by feedings being withheld because of a gastric ileus. Twent
y-five patients (9 women and 16 men) were included in the study. The total
energy deficit was a mean of 15,969 kcal (31.6% of 50,546 kcal needed); 58%
of the energy deficit (9264 kcal of the 15,969 kcal deficit) was caused by
feedings being withheld perioperatively and 42% of the energy deficit (670
5 kcal of the 15,969 kcal deficit) was caused by feedings being withheld be
cause of gastric ileus. The withholding of feedings perioperatively and bec
ause of gastric ileus were both significant contributors to energy deficits
. Future studies are necessary to determine whether energy needs being more
closely met would result in improved outcomes for these patients.