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[Animal models in urological laparoscopic training].

We present the experience of the Minimally Invasive Surgery Centre (MISC) in the development of a modular training model in laparoscopic surgery. The experience analysis includes the description of the training objectives, the learning process of simple and advance laparoscopic urologic techniques, as well as some current and future considerations before applying the laparoscopic techniques. This learning program pretends to optimize the knowledge of the surgeon and the clinical practice of these surgical techniques. The phases of the learning process have been classified in four levels, which include different modules and models and whose application will depend on the experience and surgical skills. This pyramidal training system permits the student to advance step by step through each level depending on her surgical skills. We have presented our experience in twelve courses about laparoscopic urology and four courses of laparoscopic radical prostatectomy, in which more than 300 urologists have assisted. Furthermore, some Spanish Urology Units have been developing special experimental training programs on laparoscopic radical prostatectomy, partial nephrectomy or laparoscopic dismembered pyeloplasty with Anderson-Hynes technique. It has been previously described that laparoscopic modular learning constitutes a very useful concept to avoid problems related to an incomplete and incorrect learning process. Also it seems clear that the laparoscopic training reduces the learning curve in laparoscopic urologic techniques.

Animals↗

Pregnancy outcome after laparoscopic and laparoconverted myomectomy.

OBJECTIVE: To compare fertility and pregnancy-related complications after laparoscopic and laparoconverted myomectomy. METHODS: Retrospective analysis of 106 infertile women with uterine leiomyomas, of whom 88 women underwent laparoscopic myomectomy and 18 laparoconversion. RESULTS: There was no difference in the patients' baseline characteristics or the mean number of fibroids between the laparoscopic and laparoconversion groups. The mean (+/-S.D.) diameter of the largest fibroid in the laparoscopic and laparoconversion groups was 6.2+/-1.8 and 8.1+/-1.4 cm, respectively (P<0.001). There was no difference in operating time between the two groups. The hospital stay was shorter in the laparoscopic group: 3.0+/-1 versus 5.5+/-1 days (P<0.001). The mean follow-up in the laparoscopic and laparoconversion groups was 27.3+/-7.0 and 32.0+/-3.1 months, respectively (NS). No difference in the pregnancy rate was noted between the laparoscopic and laparoconversion groups (48 and 56%, respectively). The mean time before conception in the laparoscopic and laparoconversion groups was 7.5+/-2.6 and 15.1+/-2.4 months, respectively (P<0.001). There was no difference between the two groups as regards the rates of pregnancy-related complications and vaginal delivery. No uterine rupture occurred. CONCLUSION: Laparoscopic myomectomy is feasible and safe, and should be considered for infertile women with uterine fibroids. Fertility and pregnancy outcomes following laparoscopic myomectomy are comparable with those following myomectomy after laparoconversion.

Adolescent↗

Comparison of 49 laparoscopic myomectomies with 49 open myomectomies.

STUDY OBJECTIVES: To compare the results of open myomectomy with those of laparoscopic myomectomy, and to assess complications, surgical results, total hospital cost, and morbidity associated with each procedure. DESIGN: Retrospective chart review. SETTING: Private practice of one surgeon, and Department of Obstetrics and Gynecology, Rush Medical College, Chicago, Illinois. PATIENTS: Ninety-eight women with symptomatic uterine leiomyomata. INTERVENTIONS: Forty-nine consecutive laparoscopic myomectomies were performed between 1993 and 1995, and 49 open myomectomies were performed between 1983 and 1995. MEASUREMENTS AND MAIN RESULTS: Indications for both procedures were similar, including menometrorrhagia, pelvic pain, and enlarging myomata. Mean operating time for open myomectomies was 133 minutes versus 264 minutes for laparoscopies (p <0.0001). Mean blood loss was 340 ml and 110 ml, respectively (p <0. 001). The greatest blood loss was 1000 ml in the open group and 800 ml in the laparoscopic group. Uterine size at surgery was 12 to 14 weeks in 42.9% of the open group and 9 to 11 weeks in 51% of the laparoscopy group. The open group incurred a total of 272 hospital days versus 29 days in the laparoscopic group (maximum 25 and 3 days, respectively; mean 5.6 and 0.6 days, respectively; p <0.001). The frequency of postoperative complications was higher in the open group (17) than in the laparoscopic group (5, p = 0.0068). Of patients in whom postoperative adhesions were evaluated, the overall frequency of adhesions was lower in the laparoscopic group. Three women in the open group required postoperative transfusions, compared with none in the laparoscopic group. Seven pregnancies have thus far occurred in the laparoscopic group. Three women delivered at term by elective cesarean section, at which no evidence of uterine dehiscence was found. Estimated average cost of each procedure, expressed in April 1995 dollars using the Consumer Price Index, were $14,461 for open myomectomies and $13,814 for laparoscopies (p = 0.65). Linear regression with residual analysis was performed on costs for both groups and revealed significantly increasing time trend for open myomectomies. During the years of this study, the open procedures increased in price at a rate of $868/year. The cost of laparoscopic myomectomies showed no time trend. CONCLUSIONS: Compared with open myomectomy, laparoscopic myomectomy had lower morbidity, no identifiable trend of increasing hospital cost, minimal hospital stay, and fewer complications.

Adult↗

100 laparoscopic hysterectomies in private practice and visiting professorship programs.

STUDY OBJECTIVE: To evaluate 100 laparoscopic hysterectomies and their variations in private practice and visiting professorship programs. DESIGN: A prospective observational study. SETTING: Gynecology departments of 17 teaching, community, and proprietary hospitals in the northeastern United States. PATIENTS: One hundred women who successfully underwent laparoscopic hysterectomy, 91 of whom were followed for 6 months. INTERVENTIONS: From July 1990 to August 1994, 108 women (mean age 41.6 yrs, range 38-68 yrs) for whom a vaginal hysterectomy was relatively contraindicated underwent a hysterectomy attempted by the laparoscopic route. The most common indications for hysterectomy were pelvic pain, chronic menorrhagia, and uterine leiomyomas. The women were classified according to hysterectomy, with groups comparable in age, weight, uterine size and weight, concomitant surgery performed, uterine and coexisting pathology, and history of pelvic surgery. Of the 108 women, 35 had laparoscopic hysterectomies (LH), 56 had laparoscopic-assisted vaginal hysterectomies (LAVH), and 9 had subtotal laparoscopic hysterectomies (SLH). Eight procedures were converted to laparotomy, two attempted LHs and six attempted LAVHs. In 22 cases, bipolar coagulation of vascular pedicles was done exclusively, in 58 the Endo GIA 30 stapler was used exclusively, and in 20 a combination of both modalities was used. Bilateral ureteral catheters were inserted 49 times. MEASUREMENTS AND MAIN RESULTS: There were eight complications (8.0%): two blood transfusions, two cases of transient, asymptomatic pyrexia, two abdominal wall hematomas, one Richter hernia, and one urinary tract infection. The hernia repair was the only delayed laparotomy. The mean (+/-SEM) surgical time was 123 +/- 8 minutes (range 45-235 min), and the mean hospital stay was 1.48 days +/- 0.4 (range 1-5 days). Ninety-five of the 100 women who successfully underwent a laparoscopic procedure returned to work within 2 weeks (range 4-14 days, range 15-53 days for the remaining 5). CONCLUSION: Hysterectomy performed or aided by the laparoscope, whether LH, LAVH, or SLH, is effective and safe as long as at least one member of the surgical team is an experienced and appropriately trained laparoscopic surgeon. Further studies are necessary to determine if the credentialing process for advanced laparoscopic surgery would be facilitated by a visiting professorship program.

Adult↗

Complications of contemporary radical nephrectomy: comparison of open vs. laparoscopic approach.

Increasingly, laparoscopy is being employed in the treatment of urologic malignancies. This is most apparent in kidney cancer, where laparoscopic radical nephrectomy is now considered to be a gold standard. Herein, we compared early postoperative morbidity in a contemporary series of open and laparoscopic radical nephrectomies. We reviewed all patients that underwent a radical nephrectomy between October 1999 and May 2001 at our institution. We then compared open radical nephrectomy patients to those undergoing laparoscopic approaches with specific attention to early complications. A total of 74 radical nephrectomies were performed: 41 open, 18 hand-assisted and 15 pure laparoscopic nephrectomies. Overall, complication rates between the open, hand-assist and pure laparoscopic groups were similar (10%, 17% and 12%, respectively, P = 0.133). There was no statistically significant difference in ASA score (P = 0.144), pre-operative hematocrit (P = 0.575) or intra-operative blood loss (P = 0.364). The open nephrectomy group had a statistically larger average tumor size (7.4 cm vs. 4.6 cm; P = 0.005) and younger average age (57 vs. 63; P = 0.019) than the laparoscopic group. Length of hospital stay was significantly shorter in the laparoscopic group (3.6 days vs. 1.7 days; P < 0.0001). Laparoscopic radical nephrectomy has an acceptably low complication rate and compares favorably to open radical nephrectomy. The low rate of complications combined with the advantages of laparoscopic surgery favor a laparoscopic approach for the majority of patients with stage T1 and T2 tumors.

Adult↗

Comparison of thoracoscopic and laparoscopic Heller myotomy for achalasia.

For more than three decades experts have debated the relative merits of thoracoscopic Heller myotomy (no antireflux procedure) vs. laparoscopic Heller myotomy plus Dor fundoplication for treatment of achalasia. The aim of this study was to compare the results of these two methods with respect to (1) relief of dysphagia, (2) incidence of postoperative gastroesophageal reflux, and (3) hospital course. Sixty patients with esophageal achalasia were operated on between 1991 and 1996. Thirty underwent a thoracoscopic Heller myotomy and 30 had a laparoscopic Heller myotomy with a Dor fundoplication. The two groups were similar with respect to demographic characteristics, clinical findings, and extent of manometric abnormalities. Preoperative pH monitoring showed abnormal reflux in two patients in the laparoscopic group. Average hospital stay was 84 hours for the thoracoscopic group and 42 hours for the laparoscopic group. Excellent (no dysphagia) or good (dysphagia less than once a week) results were obtained in 87% of patients in the thoracoscopic group and in 90% of patients in the laparoscopic group. Postoperative pH monitoring showed abnormal reflux in 6 (60%) of 10 patients in the thoracoscopic group and in 1 (10%) of 10 patients in the laparoscopic group. The two patients in the laparoscopic group who had reflux preoperatively had normal reflux scores postoperatively. Laparoscopic Heller myotomy with Dor fundoplication was found to be superior to thoracoscopic Heller myotomy. Both operations relieved dysphagia, but the laparoscopic approach avoided postoperative reflux and even corrected reflux present preoperatively. In addition, the patients were more comfortable and left the hospital earlier following a laparoscopic myotomy. Whether it is truly possible to perform a Heller myotomy without an antireflux procedure in a way that relieves dysphagia and regularly avoids reflux remains questionable.

Adult↗

Is laparoscopic subtotal colectomy better than open subtotal colectomy in children?

PURPOSE: The role of laparoscopic colectomy is not defined clearly. The aim of this study was to compare clinical outcomes of laparoscopic versus open subtotal colectomy in children with inflammatory bowel disease. METHODS: Eight consecutive patients undergoing laparoscopic subtotal colectomy were compared with 10 consecutive patients undergoing open subtotal colectomy. All patients were refractory to medical management on immunosuppressive regimens. Operating time, length of postoperative stay and intravenous narcotic use, time to return of intestinal function, and perioperative complications were compared between the groups. RESULTS: Operating times were significantly longer in the laparoscopic group (mean laparoscopic, 4 hours 40 minutes v mean open 2 hours 25 minutes; P <.01). There was no difference between the 2 groups in length of postoperative intravenous narcotics or hospital stay. Ileostomy output occurred earlier (mean laparoscopic, 2.5 days v mean open 3.8 days; P =.01), and there was a trend toward earlier oral intake in the laparoscopic group. A total of 6 complications occurred in 4 patients in the laparoscopic group compared with 5 complications in 5 patients in the open group. CONCLUSIONS: Perioperative clinical outcomes, including complication rates, are similar with laparoscopic and open subtotal colectomy. Laparoscopic subtotal colectomy can be performed safely in children with improved cosmesis.

Adolescent↗

Laparoscopic features of primary biliary cirrhosis in AMA-positive and AMA-negative patients.

BACKGROUND AND STUDY AIMS: Antimitochondrial antibody (AMA)-negative primary biliary cirrhosis (PBC) has been difficult to diagnose. Laparoscopic features of AMA-negative PBC were evaluated in comparison with those of AMA-positive PBC and autoimmune hepatitis. PATIENTS AND METHODS: 71 patients who fulfilled the diagnostic criteria for PBC were enrolled in the study; 48 were AMA-positive and 23 were AMA-negative. As a disease control, 46 autoimmune hepatitis patients were included. Both the frequency and specificity of each laparoscopic finding were evaluated. A laparoscopic scoring system was introduced, which used, common and uncommon laparoscopic findings, and was evaluated for the diagnosis of AMA-negative PBC. RESULTS: The characteristic laparoscopic findings for AMA-positive PBC were yellowish-white marking (92 %), dark-brown discoloration (73 %), gentle undulation (67 %), reddish patch (38 %), and yellowish-white nodules (32 %). On the other hand, laparoscopic findings such as trench-like depression, reddish markings, and wide and small depressions were uncommon in PBC compared with autoimmune hepatitis. The frequencies of characteristic and uncommon laparoscopic findings did not differ statistically between AMA-positive and AMA-negative PBC, but were different between AMA-positive or AMA-negative PBC and autoimmune hepatitis. Scores based on common and uncommon laparoscopic findings were 5.5 +/- 1.5 (mean +/- SD) in AMA-positive PBC, 5.6 +/- 2.0 in AMA-negative PBC, and - 0.30 +/- 0.5 in autoimmune hepatitis. CONCLUSION: The laparoscopic findings in AMA-negative PBC did not differ from those of AMA-positive PBC. A laparoscopic scoring system may be helpful in the diagnosis of AMA-negative PBC.

Adult↗

[Open versus laparoscopic operation for perforated appendicitis--a comparative study].

INTRODUCTION: Laparoscopic therapy of complicated appendicitis is still discussed controversially. This retrospective study compared the clinical results of open and laparoscopic appendectomy in a single centre. PATIENTS AND METHODS: Within a period of three years (1999 to 2001) 493 patients with suspected acute appendicitis were operated prospectively at a German district hospital (250 open appendectomies, 243 laparoscopic appendectomies). Twenty percent of the patients in every group had a complicated appendicitis (48 open, 44 laparoscopic appendectomies) and were analysed retrospectively considering demographic data, operative time, body mass index, preoperative inflammatory parameters (white blood cell count, C-reactive protein and body temperature) and postoperative complication rate. RESULTS: Both groups were comparable with regard to demographic data. One patient of the laparoscopic group needed an open operation (conversion rate 2.3 %). The body mass index of the laparoscopic group was significantly higher (26.3 vs. 24.1 kg/m(2)). Preoperative white blood cell count, C-reactive protein, body temperature as well as postoperative antibiotic therapy and analgesics requirement were comparable in both groups. There was no significant difference between the length of operative time (open 48 min, laparoscopic 53.5 min). The postoperative hospital stay was significantly shorter in the laparoscopic group (8 vs. 9 days, p = 0.032). Complication rate was significantly lower in the laparoscopic group (11.5 vs. 35 %, p = 0.014). CONCLUSION: Laparoscopic appendectomy is a safe procedure for the treatment of complicated appendicitis with a significantly decreased complication rate and shorter postoperative stay.

Adolescent↗

[Laparoscopic preliminary surgery of ovarian malignancies. Experiences from 127 German gynecologic clinics].

A controversial discussion has arisen between endoscopists and oncologists about laparoscopic management of ovarian cancer and borderline tumours. A questionnaire was mailed to 273 German Departments of Gyn./Obst. A response rate of 46% (127 hospitals) was obtained concerning the endoscopical technique used, the kind and delay of post-endoscopical cancer operation and the early findings (follow-up) in cases of ovarian cancer, dysgerminoma, malignant teratoma, tubal cancer and borderline tumours of the ovary. In this German survey it could be shown that laparoscopic management of malignant ovarian tumours was not uncommon between 1991-1994. Totally, 61% of ovarian cancer stage Ia and 84% of ovarian borderline tumours stage Ia have been reported without any pathological finding in laparotomy subsequent to laparoscopic management of the lesions. The 192 cases cited here are undoubtedly an underestimate of the real present frequency of endoscopically managed ovarian malignancies. Patients with this early "negative" report should be followed up carefully and may not permit conclusions that laparoscopic management of ovarian malignancies may be harmless for them. In 16% of the stage Ia borderline tumours and in 39% of the stage Ia ovarian cancer early spread has been found totally, demonstrating that implantations and metastases subsequent to the endoscopical procedure can be found even in an early follow-up phase. In 92.4% laparoscopic capsule rupture, tumour morcellement with intraabdominal spilling, subsequent cystectomy or adnectomy had been the technique of choice with additional rinsing of the intraabdominal cavity. This was harmful for the majority of patients if the subsequent cancer surgery by laparotomy was delayed for more than 8 days. Early progression of these cases to stage I c has been reported in 20% (7/36 cases) and to stage II-III in 53% (19/36 cases). Only in 7.4% the endobag procedure was used in laparoscopic management of ovarian cancer stage Ia. In ovarian cancer stage Ic-III (n = 50) an early seeding in the laparoscopic tract was reported in 52% (13/25) if subsequent cancer surgery by laparotomy was delayed more than 8 days. The endoscopical techniques and the early findings after an endoscopical management are reported in detail. In conclusion, in respect of common oncological standards the actual practice in laparoscopic management of ovarian malignancy is considered poor surgery. Capsule rupture, tumour morcellement and unprotected "biopsy" in the intraabdominal cavity and an additional delay of adequate cancer surgery are the main pitfalls of that procedure. For the overwhelming majority of patients undergoing such endoscopical procedures very early implants and metastases in the pelvis, the abdominal cavity or the laparoscopic tract have been found. It seems necessary that laparoscopic management of ovarian malignancies and borderline tumours under the present technical conditions are given up and that we should return to reliable standards of oncological surgery comparable to laparotomy. This should be discussed urgently.

Biopsy↗

Laparoscopic radical nephrectomy: financial disincentives by the Health Care Financing Administration.

BACKGROUND AND PURPOSE: Laparoscopic radical nephrectomy is a minimally invasive alternative to open radical nephrectomy. We have noticed that since the beginning of 2001, when the Current Procedural Terminology (CPT) code 50545 became available for laparoscopic nephrectomy, the reimbursement for the laparoscopic operation was significantly lowered. This led us to survey 25 laparoscopic urologic surgeons to assess trends in reimbursement from all over the United States. MATERIALS AND METHODS: During this period, the records of reimbursements for radical nephrectomy were available from a single practice to compare that for the open and laparoscopic techniques. The 19 open and 10 laparoscopic operations were entered in a database for statistical analysis. Endourologists around the country also were polled on the subject. RESULTS: The average reimbursement for an open radical nephrectomy was $1581 +/- 325 (SD), while the average reimbursement for a laparoscopic radical nephrectomy was $1192 +/- 184. Twenty-five polled endourologists had noted similar reductions in reimbursement for laparoscopic procedures. Many of those polled had participated in the Specialty Society Relative Value Unit (RVU) survey for laparoscopic radical nephrectomy and stated that their recommendations were that the value be considered greater than that of the open counterpart. CONCLUSION: The highly significant difference in reimbursement reflects a financial disincentive to surgeons performing laparoscopic procedures. It is obvious that in the U.S., the Health Care Financing Administration (now the Centers for Medicare and Medicaid Services) is devaluating all surgical procedures, and financial pressures of this type are disturbing.

Centers for Medicare and Medicaid Services, U.S.↗

Cost effectiveness of laparoscopic cholecystectomy.

An investigation was undertaken to determine whether hospital charges for laparoscopic cholecystectomy are higher than those for traditional open cholecystectomy. Thirty consecutive cases of successfully completed laparoscopic procedures in a single surgeon's experience were compared to 30 open cases performed within the previous calendar year. Patients undergoing open cholecystectomy were excluded if coexisting medical problems or complications prolonged hospitalization beyond 7 days. Mean patient age was comparable (open cholecystectomy = 47.3 +/- 2.9, laparoscopic cholecystectomy = 46.5 +/- 2.7 years), as was the incidence of other significant medical problems. Average duration of hospitalization was significantly longer for open cholecystectomy (3.6 = 0.2 days) than for laparoscopic cholecystectomy (1.0 +/- days, p less than .001). Average hospital charges for open cholecystectomy were $5606 +/- 496 and for laparoscopic cholecystectomy $4726 +/- 98. Hospital charges from operating room and recovery room charges alone were $2684 +/- 131 for laparoscopic cholecystectomy and $2196 +/- 113 for open cholecystectomy. These operating room charges represent a significantly higher percentage of total hospital charges for laparoscopic cholecystectomy than open cholecystectomy patients (laparoscopic cholecystectomy = 56.3 +/- 1.9%, open cholecystectomy = 41.2 +/- 1.5%, p less than .05). Average time for return to work or normal activity was significantly shorter for laparoscopic cholecystectomy 8.6 +/- 9 days) than for open cholecystectomy (32.4 +/- 3.6 days, p less than .001). The authors conclude that laparoscopic cholecystectomy is a cost effective procedure for the treatment of symptomatic cholelithiasis, and that increased operative costs more than offset the significantly decreased length of hospitalization.

Adult↗

Cost-effectiveness of extraperitoneal laparoscopic inguinal hernia repair: a randomized comparison with conventional herniorrhaphy. Coala trial group.

OBJECTIVE: To determine the cost-effectiveness of laparoscopic inguinal hernia repair. SUMMARY BACKGROUND DATA: Laparoscopic inguinal hernia repair seems superior to open techniques with respect to short-term results. An issue yet to be studied in depth remains the cost-effectiveness of the procedure. As part of a multicenter randomized study in which >1000 patients were included, a cost-effectiveness analysis from a societal point of view was performed. METHODS: After informed consent, all resource costs, both in and outside the hospital, for patients between August 1994 and July 1995 were recorded prospectively. Actual costs were calculated in a standardized fashion according to international guidelines. The main measures used for the evaluation of inguinal hernia repair were the number of averted recurrences and quality of life measured with the Short Form 36 questionnaire. RESULTS: Resource costs were recorded for 273 patients, 139 in the open and 134 in the laparoscopic group. Both groups were comparable at baseline. Average total hospital costs were Dfl 1384.91 (standard deviation: Dfl 440.15) for the open repair group and Dfl 2417.24 (standard deviation: Dfl 577.10) for laparoscopic repair, including a disposable kit of Dfl 676. Societal costs, including costs for days of sick leave, were lower for the laparoscopic repair and offset the hospital costs by Dfl 780.83 (75.6%), leaving the laparoscopic repair Dfl 251.50 more expensive (Dfl 4665 versus Dfl 4916.50). At present, the recurrence rate is 2.6% lower after laparoscopic repair. Thus, 38 laparoscopic repairs, costing an additional Dfl 9,557, prevent the occurrence of one recurrent hernia. Quality of life was better after laparoscopic repair. CONCLUSION: A better quality of life in the recovery period and the possibility of replacing parts of the disposable kit with reusable instruments may result in the laparoscopic repair becoming dominantly better--that is, less expensive and more effective from a societal perspective.

Cost-Benefit Analysis↗

Towards T-tube free laparoscopic bile duct exploration: a methodologic evolution during 300 consecutive procedures.

OBJECTIVE: To establish a simple, reproducible, and safe technique of laparoscopic common bile duct exploration (CBDE) with high clearance rates and low morbidity and mortality rates. SUMMARY BACKGROUND DATA: For most general surgeons, laparoscopic CBDE appears an unduly complex and demanding procedure. Since the introduction of laparoscopic cholecystectomy, many surgeons use endoscopic cholangiography (ERC) and endoscopic sphincterotomy as their only option in treating bile duct stones. ERC is more specific if used after surgery, but it carries an appreciable morbidity rate and has the disadvantage of requiring a second procedure to deal with bile duct stones. To this end, various methods of laparoscopic CBDE have been developed. METHODS: Between August 1991 and February 1997, 300 consecutive unselected patients underwent laparoscopic CBDE. RESULTS: Of 300 laparoscopic CBDE procedures, 173 (58%) were managed using a transcystic approach and 127 (42%) with choledochotomy. Successful laparoscopic stone clearance was achieved in 271 (90%). Of the 29 (10%) patients not cleared laparoscopically, 10 had an elective postsurgical ERC, 12 were converted to an open procedure early in the series, and 7 had unexpected retained stones. There was one death (mortality rate 0.3%) and major morbidity occurred in 22 patients (7%). The last 100 procedures were performed from July 1995 to February 1997, and stone clearance was unsuccessful in only two patients. CONCLUSIONS: Laparoscopic transcystic basket extraction of common duct stones under fluoroscopic guidance is a relatively quick, successful, and safe technique. Choledochotomy, when required, is associated with a higher morbidity rate, particularly with T-tube insertion, and the authors advocate primary bile duct closure with or without insertion of a biliary stent as a more satisfactory technique for both surgeon and patient. Most patients with gallbladder and common duct calculi should expect a curative one-stage laparoscopic procedure without the need for external biliary drainage or ERC.

Adult↗

Patterns of recurrence and survival after laparoscopic and conventional resections for colorectal carcinoma.

OBJECTIVE: To determine whether survival and recurrence after laparoscopic-assisted surgery for colorectal cancer is compromised by an initial laparoscopic approach. SUMMARY BACKGROUND DATA: Laparoscopic colorectal resection for malignancy remains controversial 8 years after its first description. Fears regarding compromised oncologic principles and early recurrence (particularly the phenomenon of port-site metastases) have tempered enthusiasm for this approach. Long-term follow-up data are at present scarce. METHODS: A prospective comparative trial was undertaken between December 1993 and May 1996, during which 114 patients had laparoscopic-assisted resection by a single laparoscopic colorectal surgeon or conventional open surgery by a second specialist colorectal surgeon. Intensive follow-up for at least 2 years is available on 109 patients. Analysis was performed on an intention-to-treat basis. RESULTS: Recurrent disease has developed in 27 patients (25%), 16 of 57 in the laparoscopic group (28%) and 11 of 52 in the conventional group (21%). Crude death rates are 26/57 (46%) in the laparoscopic group and 24/52 (46%) in the conventional group. No port-site metastases have occurred; however, wound metastases associated with disseminated disease have developed in three patients in the open group and one in the laparoscopic group. Stage-for-stage survival and recurrence figures are comparable. CONCLUSION: Oncologic outcome at a minimum of 2 years is not compromised by the laparoscopic approach. Wound recurrences are a feature of laparoscopic and conventional surgery for advanced disease.

Adult↗

Are concerns over right laparoscopic donor nephrectomy unwarranted?

OBJECTIVE: To examine the ability of several large, experienced transplantation centers to perform right-sided laparoscopic donor nephrectomy safely with equivalent long-term renal allograft function. SUMMARY BACKGROUND DATA: Early reports noted a higher incidence of renal vein thrombosis and eventual graft loss. However, exclusion of right-sided donors would deprive a significant proportion of donors a laparoscopically harvested graft. METHODS: A retrospective review was performed among 97 patients from seven centers performing right-sided laparoscopic donor nephrectomy. Surgical and postoperative demographic factors were evaluated. Complications were identified and long-term renal allograft function was compared with historical left-sided laparoscopic donor nephrectomy cohorts. RESULTS: Right laparoscopic donor nephrectomy was performed for varying reasons, including multiple left renal arteries or veins, smaller right kidney, or cystic right renal mass. Mean surgical time was 235.0 +/- 66.7 minutes, with a mean blood loss of 139 +/- 165.8 mL. Conversion was required in three patients secondary to bleeding or anatomical anomalies. Mean warm ischemic time was limited at 238 +/- 112 seconds. Return to diet was achieved on average after 7.5 +/- 2.3 hours, with mean discharge at 54.6 +/- 22.8 hours. Two grafts were lost during the early experience of these centers to renal vein thrombosis. Both surgical and postoperative complications were limited, with few long-term adverse effects. Mean serum creatinine levels were higher than open and left laparoscopic donor nephrectomy on postoperative day 1, but at all remaining intervals the right laparoscopic donors had equivalent creatinine values. CONCLUSIONS: These results confirm that right laparoscopic donor nephrectomy provides similar patient benefits, including early return to diet and discharge. Long-term creatinine values were no higher than in traditional open donor or left laparoscopic donor cohorts. These results establish that early concerns about high thrombosis rates are not supported by a multiinstitutional review of laparoscopic right donor nephrectomies.

Adolescent↗

Laparoscopic renal and adrenal surgery in obese patients: comparison to open surgery.

PURPOSE: The efficacy and morbidity of laparoscopic renal and adrenal surgery in comparison to open surgery in obese patients are unknown. This retrospective study was performed to compare the outcome of laparoscopic versus open renal and adrenal surgery in the markedly and morbidly obese patient (body mass index 30 or greater). MATERIALS AND METHODS: The study group comprised all obese patients undergoing laparoscopic renal and adrenal surgery (laparoscopic group) from August 1997 to February 1998 at our institution. The majority of procedures were performed using a retroperitoneoscopic approach via the flank. These patients were compared with all obese patients undergoing open renal and adrenal surgery (open group) from 1994 to 1998. Open group patients with factors precluding laparoscopic surgery were excluded from the study (mass greater than 10 cm., renal vein and/or inferior vena caval thrombus and extension outside Gerota's fascia). RESULTS: There were 21 obese patients in each group and baseline parameters were comparable between groups. Median body mass index in the laparoscopic and open groups was 34 and 31, respectively. Median surgical time between the laparoscopic (210 minutes) and open (185) groups was comparable (p = 0.16). However, the laparoscopic group had decreased blood loss (100 versus 350 ml., p<0.001), quicker resumption of oral intake and ambulation (less than 1 versus 5 days, p<0.001), decreased narcotic analgesic requirements (12 versus 279 mg., p<0.001), shorter median hospital stay (less than 1 versus 5 days, p<0.001) and quicker convalescence (3 versus 9 weeks, p<0.001). There were 6 complications in 4 laparoscopic cases and 14 in 9 open surgery cases (p = 0.16). CONCLUSIONS: Markedly obese patients have an increased risk of complications from surgery, regardless of the approach. Our data suggest that laparoscopic renal and adrenal surgery is technically feasible in the markedly and morbidly obese patient, and compared with open surgery results in significantly decreased blood loss, quicker return of bowel function, less analgesic requirement, shorter convalescence and reduced hospital stay.

Adrenal Gland Neoplasms↗

A prospective comparison of surgical approach for anterior L4-L5 fusion: laparoscopic versus mini anterior lumbar interbody fusion.

STUDY DESIGN: A prospective comparison of 50 consecutive patients who underwent L4-L5 anterior lumbar interbody fusion (ALIF). OBJECTIVES: To compare surgical time, blood loss, time in hospital, complications and adequacy of exposure between laparoscopic and mini-ALIF surgical approaches for L4-L5 anterior spinal fusion. SUMMARY OF BACKGROUND DATA: Advances in minimally invasive laparoscopic techniques have resulted in many centers adopting the endoscopic approach to L5-S1 as routine. However, the endoscopic approach to L4-L5 can be much more difficult. A direct comparison of open and laparoscopic techniques of exposure has not been reported. METHODS: From 1995 through 1998, data were prospectively collected on a series of 50 consecutive patients who underwent L4-L5 anterior interbody fusion with a threaded device, by either a laparoscopic or an open mini-ALIF approach. RESULTS: Twenty-five patients underwent a laparoscopic procedure and 25 an open mini-ALIF approach. For single-level L4-L5 fusions, there was no statistical difference in operating time, blood loss, or length of hospital stay between laparoscopic or mini-ALIF groups. For two-level procedures, only the operative time differed, with laparoscopic procedures taking 25 minutes longer (P = 0.035). The rate of complications was significantly higher in the laparoscopic group (20% vs. 4%). In the laparoscopic group, 16% of patients had inadequate exposure, with the result that only a single cage was placed. In the open mini-ALIF group, two cages were placed in all cases. CONCLUSIONS: There does not appear to be a significant advantage at the L4-L5 level of the transperitoneal laparoscopic surgical approach when compared with an open mini-ALIF retroperitoneal technique.

Adult↗