Chiaki Kawamoto

Laparoscopic cholecystectomy in the elderly: Analysis of pre‐operative risk factors and postoperative complications

A retrospective study was conducted of two groups of patients over (group 1, n= 57) and under (group 2, n= 655) the age of 70 years who underwent laparoscopic cholecystectomy (LC). The pre‐operative physical status and systemic complications, operation time, postoperative complications, postoperative hospital stay and other clinical features of the two groups were compared. The incidence of pre‐operative complications in group 1 was significantly higher than that in group 2 (P < 0.05). Postoperatively no severe complication was found in any patient. Group 1 showed significantly prolonged operation time and postoperative hospital stay compared with group 2 (P < 0.05). The difference between the groups in the intra‐operative treatment time and postoperative treatment is attributed to the greater prevalence of common bile duct stone in group 1 as there was little difference between the groups in the postoperative recovery after exclusion of these patients. No pulmonary complications, which are associated with LC, were observed; the postprocedure pain was slight and the period of bedrest was short. If complications associated with pneumoperitoneum can be prevented, this surgery is an excellent measure to improve the quality of life of even elderly patients with cholecystolithiasis.

Cystic Duct Stones Detected During Intraoperative Cholangiography in Laparoscopic Cholecystectomy

During intraoperative cholangiography, cystic duct stones were diagnosed in 79 of 898 consecutive patients (8.8%) who underwent laparoscopic cholecystectomy over a 45‐month period. The stones were successfully removed laparoscopically. In addition, it should be mentioned that the stones were identified and retrieved before the cholangiography was started in all but 8 of the 79 cases. Of these 79, only 27 cases (34.2%) had been diagnosed as having cystic duct stones preoperatively by intravenous cholangiography and/or endoscopic retrograde cholangiography. From the results obtained, it can be concluded that intraoperative cholangiography is mandatory to detect unsuspected retained stones not only in the common duct but also in the cystic duct during laparoscopic cholecystectomy, and also provides vital information as to biliary anatomic variations, the proximity of the cystic duct to the common duct, and the confirmation of inadvertent bile duct injury.

Spectrum Analysis of Organ Fluorescence Excited by Argon Laser in Healthy Rat

ABSTRUCT Spectrum analysis of fluorescence of the various organs and gastrointestinal contents excited by argon laser was carried out in healthy rats, obtaining the results as follows. 1. The peaks of 630 and 680nm were not observed in the fluorescence of the gastrointestinal mucosa, liver, spleen and kedney. 2. The spectrum of fluorescence of the gastrointestinal mucosa in moe or less influenced by the contents in the gastrointestinal tract. 3. The gastrointestinal contents of fasting and polymyxin orally administrated fasting rat showed the spectra with the peaks at 630 and 680nm, being-different from that of the rats on ordinary feed. 4. The gastrointestinal bacterial flora in the fasting rats and polymyxin administrated fasting rats were different from that of the rats on ordinary feed.