R N Dickerson1, K L Vehe, J L Mullen, I D Feurer. 1. Department of Pharmacy Practice and Pharmacy Administration, Philadelphia College of Pharmacy and Science, PA 19104-4495.
Abstract
OBJECTIVE: To assess the resting energy expenditure of hospitalized patients with pancreatitis. DESIGN: Prospective, case-referent study. SETTING: Nutrition support service in a university tertiary care hospital. PATIENTS: Patients referred to the Nutrition Support Service with the diagnosis of pancreatitis. Excluded from study entry included those with cancer, obesity (greater than 150% ideal body weight), those measured within 3 postoperative days, or patients requiring ventilator support with an FIO2 of greater than 0.5. Forty-eight patients with either acute pancreatitis (n = 13), chronic pancreatitis (n = 24), acute pancreatitis with sepsis (n = 7), or chronic pancreatitis with sepsis (n = 7) were studied. The two septic groups were combined into a single pancreatitis-with-sepsis group, since no significant differences among measured variables were observed between individual septic groups. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Resting energy expenditure was measured by indirect calorimetry and compared with the predicted energy expenditure, as determined by the Harris-Benedict equations. Resting energy expenditure (percent of predicted energy expenditure) was significantly (p less than .02) greater for patients with pancreatitis complicated by sepsis (120 +/- 11%) compared with the nonseptic chronic pancreatitis group (105 +/- 14%). Resting energy expenditure for the nonseptic acute pancreatitis patients (112 +/- 17%) was not significantly different from the other groups. The septic pancreatitis group had the largest percentage (82%) of hypermetabolic (resting energy expenditure greater than 110% of predicted energy expenditure) patients, whereas 61% and 33% of the acute and chronic pancreatitis groups were hypermetabolic, respectively (p less than .02). CONCLUSIONS: Resting energy expenditure is variable in patients with pancreatitis (77% to 139% of predicted energy expenditure). The Harris-Benedict equations are an unreliable estimate of caloric expenditure. Septic complications are associated with hypermetabolism and may be the most important factor influencing resting energy expenditure in pancreatitis patients.
OBJECTIVE: To assess the resting energy expenditure of hospitalized patients with pancreatitis. DESIGN: Prospective, case-referent study. SETTING: Nutrition support service in a university tertiary care hospital. PATIENTS: Patients referred to the Nutrition Support Service with the diagnosis of pancreatitis. Excluded from study entry included those with cancer, obesity (greater than 150% ideal body weight), those measured within 3 postoperative days, or patients requiring ventilator support with an FIO2 of greater than 0.5. Forty-eight patients with either acute pancreatitis (n = 13), chronic pancreatitis (n = 24), acute pancreatitis with sepsis (n = 7), or chronic pancreatitis with sepsis (n = 7) were studied. The two septic groups were combined into a single pancreatitis-with-sepsis group, since no significant differences among measured variables were observed between individual septic groups. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Resting energy expenditure was measured by indirect calorimetry and compared with the predicted energy expenditure, as determined by the Harris-Benedict equations. Resting energy expenditure (percent of predicted energy expenditure) was significantly (p less than .02) greater for patients with pancreatitis complicated by sepsis (120 +/- 11%) compared with the nonseptic chronic pancreatitis group (105 +/- 14%). Resting energy expenditure for the nonseptic acute pancreatitispatients (112 +/- 17%) was not significantly different from the other groups. The septic pancreatitis group had the largest percentage (82%) of hypermetabolic (resting energy expenditure greater than 110% of predicted energy expenditure) patients, whereas 61% and 33% of the acute and chronic pancreatitis groups were hypermetabolic, respectively (p less than .02). CONCLUSIONS: Resting energy expenditure is variable in patients with pancreatitis (77% to 139% of predicted energy expenditure). The Harris-Benedict equations are an unreliable estimate of caloric expenditure. Septic complications are associated with hypermetabolism and may be the most important factor influencing resting energy expenditure in pancreatitispatients.
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