Effect of Positive End Expiratory Pressure on Intra-abdominal Pressure and Abdominal Perfusion Pressure at an Increased Intra-abdominal Pressure / 대한마취과학회지

BACKGROUND: Increased intra-abdominal pressure (IAP) leads to adverse effects on most organ systems and is associated with significant morbidity and mortality in surgical and trauma patients. The purpose of this study was to determine the effect of positive end expiratory pressure (PEEP) on IAP and abdominal perfusion pressure (APP, mean arterial pressure, MAP minus IAP) at normal and increased intra-abdominal pressures. METHODS: 15 patients requiring a laparoscopic cholecystectomy were included. IAP was measured indirectly using a transurethral catheter, and APP was calculated for each patient at 0, 5, 10, 15, and 20 cmH2O of PEEP, while the insufflator pressure was maintained at either 0 or 15 mmHg. RESULTS: At each insufflator pressure, IAP increased with higher PEEP levels (P < 0.05). At 0 mmHg insufflator pressure state, MAP substantially decreased according to increasing PEEP levels, however, at 15 mmHg insufflator pressure state, MAP substantially increased despite increasing PEEP levels. Meanwhile, APP decreased with increasing PEEP levels at an insufflator pressure of zero while remaining constant at a 15 mmHg insufflator pressure. CONCLUSIONS: We found that IAP increases in response to higher PEEP levels (10, 15, and 20 cmH2O) at insufflator pressures of both zero and 15 mmHg in patients anesthetized for laparoscopic cholecystectomy. However, APP did not decrease with increasing PEEP levels at a higher intraadominal pressure (15 mmHg).

Prognosis for Periampullary Cancers after Pancreaticoduodenectomy

PURPOSE: The survival after a pancreaticoduodenectomy, for a periampullary adenocarcinoma is limited. However, the improvement in perioperative management, and the development of interventional medicine have made the survival from that cancer favorable. Due to the anatomical proximity of periampullary tumors, surgeons perform same procedure. It is accepted that the outcome of periampullary cancers vary after resection. The purpose of this study was to evaluate the risk factors, and the differences in survival, from periampullary cancers according to the origin of the tumor. METHODS: From March 1992 to December 2000, 87 patients, with periampullary tumors, who underwent a pancreatico duodenectomy, were analyzed for the location of the tumor and the tumor status. Of the 87 patients, the 85 surviving more than 30 days were included in the statistic analysis. The survival was calculated using the Kaplan-Meier Method. The risk factors were also analyzed between the locations. RESULT: Of the 87 resected adenocarcinomas, 25 were pancreatic cancers, 30 distal CBD (common bile duct) cancers, 26 mpulla of Vater cancers and 6 duodenal cancers. The patients had a mean age of 60 (40~78) years. The total bilirubin, ALT, and CA 19-9 levels were statistically different for each cancer. There were no statistical differences between the cancer groups in operative methods, the amount of transfusion, postoperative hospital stay, and complications. The overall morbidity and mortality were 37 and 2%, respectively. The 5-year survival rates for the pancreatic, distal CBD, and Ampulla of Vater cancers were 9.6, 45.5, and 72.1%, respectively, was and were statistically significant (P<0.001). A univariate analysis of the 85 patients indicated that the predictors of long term survival included: a pathologic diagnosis of Ampulla of Vater cancer, absence of lymph node metastasis, tumor diameter<3 cm and complication. CONCLUSION: The factors influencing the survival were nodal metastasis, size of the tumor, age, and complications. The differences in the tumor biology will affect the survival, and although a pancreaticoduodenectomy remains the procedure of choice for periampullary tumors, adjuvant, or neoadjuvant, therapy for a pancreatic head tumor is especially needed.

Experience of Catheter Implantation for Continuous Ambulatory Peritoneal Dialysis and Catheter Related Complications

PURPOSE: By virtue of advances in scientific methods and technical systems, there has been a rapid growth in the number of end stage renal disease (ESRD) patients treated using continuous ambulatory peritoneal dialysis (CAPD) as their primary renal replacement therapy. However, there are various catheter related complications that are limiting factors in patient and catheter maintenance. This study was aimed at introducing of the techniques of CAPD catheter implantation designed for reducing the complication rate, as well as conducting an investigation of the incidence of CAPD catheter related complications and patient survival and catheter survival rates. METHODS: We performed 234 cases of CAPD catheter implantation using a conventional surgical method (n=162, between January 1993 and December 1997) or a modified surgical method (n=72, between January 1998 and December 1999), and retrospectively reviewed the patient's medical records to elucidate the incidence of early catheter related complications and the catheter removal rate in relation to the surgical methods. RESULTS: There were 21 cases (23.8%) of peritonitis in the modified group, which was less than that in the conventional group (79 cases, 48.8%) (P=0.036). There were 9 cases (12.5%) of exit site and tunnel infection in the modified group, which was less than that in the conventional group (36 cases, 22.2%) (P=0.019). We were able to reduce the peritonitis as well as exit site and tunnel infection by a long segment of tunneling and immobilization of the catheter to the skin. Nine cases of leakage (5.5%) have occurred in the conventional group and one case (1.3%) in the modified group; the difference was statistically significant (P=0.046). CONCLUSION: These results indicate that our modified surgical methods can reduce the rate of early catheter related complications.

Surgical Treatment of Intestinal Behcet's Disease

PURPOSE: No standardized treatment protocol yet exists for intestinal Behcet's disease. The aim of this retrospective study was to identify the factors that are related to the recurrence and mortality of intestinal Behcet's disease. METHODS: Twelve patients who had undergone surgery for intestinal Behcet's disease at Korea University Hospital from 1991 to 1999 were chosen. Nineteen patients had been diagnosed as having intestinal Behcet's disease. Of the 19 patients, 7 are still being followed up, and 12 have undergone surgery, these patients were chosen as the subjects. RESULTS: Of the 11 cases, excluding one case that expired following the initial surgery, 8 cases required subsequent surgery due to recurrence. When the data was analyzed according to the patient's age, medication, classification of Behcet's disease, location of the lesion, operative method, and extent of resection, recurrence was shown to be related with medication and extent of resection (p<0.05). Of the 12 cases, 5 cases expired. When, the data of the 5 cases that expired were analyzed according to the patient's age, medication, extent of resection, classification of Behcet's disease, location of the lesion, and operative method, mortality was shown to be related with the location of the lesion (p<0.05). CONCLUSION: Medical treatment is the primary therapy for intestinal Behcet's disease and radical extended resection extending 30 cm proximal and distal to the lesion prevents recurrence. However, when the lesion was located in the small intestine and formed a fistula with the duodenum, the prognosis appears to be extremely poor.

The Effectiveness of a Preoperative Endoscopic Sphincterotomy before the Laparoscopic Cholecystectomy / 대한소화기내시경학회지

BACKGROUND/AIMS: There are some options which exist in the optimal treatment of Common Bile Duct (CBD) stones. The management of CBD stones by a preoperative Endoscopic Sphincterotomy (EST) and a Laparoscopic Cholecystectomy (LC) remains controveraial. This study intends to investigate the value of an EST before an LC in patients with CBD stones compared with a conventional Open Cholecystectomy (OC) with a Common Bile Duct Exploration (CBDE). METHODS: Sixty three patients underwent an EST before an LC, while 65 patients received an OC with a CBDE were reviewed retrospectively for a 42 month period from January, 1993 to June, 1996. RESULTS: There was no statistical significance of stone numbers and sizes in both groups (p>0.05), but the EST before the LC group a showed a shorter hospital stay (12.2 days:19.8 days, p 0.05). Rate of stone recurrence and remnant stones in the OC with CBDE group (50.8%) was ater than the EST before LC group (25.4%)(p <0.05). The total hospitalization fee in the EST before LC group was lesser than the OC with CBDE group (p<0.05). CONCLUSIONS: An EST before an LC is a valuable option for patients with gall stones and simultaneous choledocholithiasis and is suitable according to recent trends in the minimal invasive approach. It needs however, larger group evaluation in order to determine the accurate indications and proper patient selection for this procedure.

Korea University Experience in Laparoscopic Cholecystectomy / 대한소화기내시경학회지

Surgical advance on the general surgical department as minimal access procedure was changed into the laparoscopic cholecystectomy from open cholecystectomy for treatment of cholelithiasis. Laparoscopic cholecystectomy is far less invasive, less painful, less expensive, less complicative, high cosmetic and high eonservative procedure, and reduced hospitalization than open surgery. (continue...)