Abstract
The postcholecystectomy patients who have a T-tube in situ offer a convenient route through the T-tube to perfuse solvents into the common bile duct (CBD) for dissolving any retained common duct stones. If successful, this approach is much simpler and cheaper than the usual therapeutic modality used for CBD stones, namely, endoscopic papillotomy. Thus a most potent cholesterol solvent, methyl t-butyl ether (MTBE) was perfused through the T-tube into the CBD of five patients with retained common duct stones. The dose of the solvent varied, 1.5-5 mL 0.5-1 h, given 7-13 times amounting to a total of 20-66 mL. Instillation of MTBE in the T-tube was alternated with aspiration of the bile through T-tube. Only one patient showed complete disappearance of the bile duct stone following MTBE perfusion. Others did not show any appreciable response and had to be treated by endoscopic papillotomy (three patients) or mono-octanoin perfusion (one patient). Side-effects of MTBE perfusion included pain in the abdomen in all patients, somnolence and nausea/vertigo in two patients and the smell of ether on the breath in two patients. It is concluded that MTBE is not an effective agent for dissolution of retained CBD stones in patients with T-tube in situ.
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