Somatostatin and octreotide both enhance closure of gastrointestinal fistulas. The present trial was undertaken to test whether early combined treatment with parenteral nutrition and octreotide 100 micrograms every 8 h by subcutaneous injection had a beneficial effect compared with parenteral nutrition plus placebo. Thirty-one patients with post-operative gastrointestinal or pancreatic fistula were randomly assigned to receive parenteral nutrition plus octreotide (14 patients) or placebo (17) within 8 days of fistula onset. The percentage reduction in output and rate of spontaneous closure within 20 days were analysed. Mean(s.d.) reduction in output was similar after octreotide and placebo at 24 h (66(43) versus 68(47) per cent, P = 0.9), 48 h (60(46) versus 57(43) per cent, P = 0.8) and 72 h (62(50) versus 66(49) per cent, P = 0.9) after starting the combined treatment. Closure within 20 days was observed in eight of 14 fistulas in patients given octreotide and in six of 17 in those receiving placebo (P = 0.4). Administration of octreotide, within 8 days of fistula onset, associated with parenteral nutrition does not significantly increase the spontaneous fistula closure rate compared with parenteral nutrition plus placebo.
To elucidate the pathogenesis of renal dysfunction associated with obstructive jaundice, body water compartments were measured using a multi-isotope dilution technique in ten patients with biliary tract obstruction and in ten control subjects matched for age, sex, weight, height and body surface area. Expressed as a fraction of body-weight, total body water was reduced in jaundiced patients (41.8 versus 46.2 per cent, P less than 0.02). Extracellular water volume was also reduced in patients with jaundice (20.3 versus 24.3 per cent, P less than 0.003) owing to a reduction of the interstitial space (16.1 versus 19.5 per cent, P less than 0.004) and, to a lesser degree, of the plasma volume (4.2 versus 4.8 per cent, P = 0.1). There was a close correlation in jaundiced patients between plasma volume and the creatinine clearance rate (r2 = 0.56, P less than 0.02) and between plasma volume and extracellular volume (r2 = 0.77, P less than 0.0001). Extracellular volume in such patients also correlated with the percentage weight loss (r2 = 0.42, P = 0.04). Obstructive jaundice is associated with a contracted extracellular water compartment, although extracellular water, as a percentage of body-weight, increased in proportion to the body-weight lost. Reduction of the interstitial volume and a marginally reduced plasma volume may be determinant factors in the pathogenesis of the renal and haemodynamic disturbances observed in patients with biliary tract obstruction.
In patients with CRP <120.66 mg/L on post-operative day 5 or a decay from post-operative day two to five of >40%-48% in OPEN and LAP, respectively, OSI may be ruled out and the patient discharged safely. Careful workup is needed in those patients with higher postoperative CRP concentrations or lower apparent decay values.
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