THE ROLE OF COMPUTERIZED TOMOGRAPHY IN THE EVALUATION OF COMPLICATIONS AFTER LAPAROSCOPIC UROLOGICAL SURGERY

Robotic Laparoendoscopic Single Site: Pyeloplasty and Nephrectomy Chapter

Robotic laparoendoscopic single site (RLESS) for upper tract procedures is safe and feasible in the correctly selected patient. An ideal candidate is young, has a low body mass index, and is undergoing surgery for benign indications. For RLESS procedures, we utilize a GelPOINT^® access platform for "single-port" placement and ports are configured in a diamond shape. Five millimeter EndoWrist^® robotic instruments are placed under direct vision. Range of motion is increased by utilizing the chopstick technique. The surgeon must always be aware of the orientation of each instrument to prevent counter-springing associated with their crossing at the level of the abdominal wall. The robotic camera lens and instruments must be moved synchronously, given their coaxial orientation relative to each other. In this chapter, we describe our technique for two of the most common RLESS upper tract procedures: pyeloplasty and nephrectomy.

Complications of Hand-Assisted Laparoscopic Urologic Surgery

Since the first urologic case was reported in 1997, hand-assisted laparoscopic surgery (HALS) has proven to be useful for both the experienced and the inexperienced laparoscopic surgeon. In a recent series of 196 cases at three major medical institutions, 18 patients (9.2%) suffered 32 major complications, and 28 patients (14.3%) had 31 minor complications. The most common major complications were small-bowel injury, requirement for open conversion to control bleeding, and need for reintubation. The most frequent minor complications were urinary retention, splenic capsular injury, and prolonged ileus. The author discusses ways of recognizing and managing the complications of HALS, including physiologic, access-related, intraoperative, and post-operative problems.

Early repeated exploration after laparoscopic urologic surgery: comparison of clinical, radiologic, and surgical findings

OBJECTIVES

To correlate the clinical scenarios and radiographic findings with the operative findings in patients who underwent repeated exploration to define a management strategy. Postoperative complications after laparoscopy may cause diagnostic challenges because of atypical presentation.

METHODS

We retrospectively reviewed the records from 1226 urologic laparoscopic procedures between July 1993 and July 2000. We compared the clinical, radiologic, and surgical findings of patients who underwent repeated exploration within the first month after laparoscopy.

RESULTS

During the study period, 9 patients (0.7%) were taken back to the operating room for repeated exploration. The median time for the appearance of symptoms was the second postoperative day. Eight patients were evaluated by computed tomography (CT) and one by both renal Doppler ultrasonography and MAG-3 renal perfusion scan. Repeated operations were laparoscopic in 4 and open in 5 patients. In all the patients evaluated by CT scan, the radiologic findings were consistent with the surgical findings. In the patients who underwent diagnostic laparoscopy because of the severity of clinical findings, despite negative CT findings, no abnormality was discovered at exploration. In 1 patient who was not evaluated by CT, duodenal perforation was detected at exploration.

CONCLUSIONS

Clinical findings may not be sufficient for the decision of repeated operation for patients acutely ill after laparoscopy. CT findings correlated well with the findings at exploration. In cases in which no abnormality is detected by CT, it appears reasonable to withhold surgical exploration unless the clinical situation deteriorates.

Laparoscopic bowel injury: incidence and clinical presentation

PURPOSE

Bowel injury is a potential complication of any abdominal or retroperitoneal surgical procedure. We determine the incidence and assess the sequelae of laparoscopic bowel injury, and identify signs and symptoms of an unrecognized injury.

MATERIALS AND METHODS

Between July 1991 and June 1998 laparoscopic urological procedures were performed in 915 patients, of whom 8 had intraoperative bowel perforation or abrasion injuries. In addition, 2 cases of unrecognized bowel perforation referred from elsewhere were reviewed. A survey of the surgical and gynecological literature revealed 266 laparoscopic bowel perforation injuries in 205,969 laparoscopic cases.

RESULTS

In our series laparoscopic bowel perforation occurred in 0.2% of cases (2) and bowel abrasion occurred in 0.6% (6). The 6 bowel abrasion injuries were recognized intraoperatively and 5 were repaired immediately. In 4 cases, including 2 referred from elsewhere, perforation injuries were not recognized intraoperatively and they had an unusual presentation postoperatively. These patients had severe, single trocar site pain, abdominal distention, diarrhea and leukopenia followed by acute cardiopulmonary collapse secondary to sepsis within 96 hours of surgery. The combined incidence of bowel complications in the literature was 1.3/1,000 cases. Most injuries (69%) were not recognized at surgery. Of the injuries 58% were of small bowel, 32% were of colon and 50% were caused by electrocautery. Of the patients 80% required laparotomy to repair the bowel injuries.

CONCLUSIONS

Bowel injury following laparoscopic surgery is a rare complication that may have an unusual presentation and devastating sequelae. Any bowel injury, including serosal abrasions, should be treated at the time of recognition. Persistent focal pain in a trocar site with abdominal distention, diarrhea and leukopenia may be the first presenting signs and symptoms of an unrecognized laparoscopic bowel injury.

A review of our first 100 cases of laparoscopic nephrectomy: defining risk factors for complications

OBJECTIVE

To present the complications from our first 100 cases of laparoscopic nephrectomy, a technically demanding procedure requiring lengthy experience, and to define the risk factors.

PATIENTS AND METHODS

Indications for laparoscopic nephrectomy included patients requiring nephrectomy for benign pathology and those requiring nephroureterectomy for upper tract transitional cell carcinoma confined to the upper ureter and/or renal pelvis. All patients were operated on by one surgeon (D.A.T.) via a transperitoneal route and data on diagnosis, outcome and complications collected prospectively.

RESULTS

The overall complication rate was 18%, of which 3% were major and 15% minor complications. Five cases were converted to open surgery electively. Complications and conversions were associated with a history of pyonephrosis, previous renal surgery, staghorn calculi, polycystic kidney disease, and xanthogranulomatous pyelonephritis. While there was no discernible decline in the decrease in complications with experience, operative duration decreased from a mean of 204 min for the first 20 cases to 108 min for the last 20. Complications and conversions were more closely associated with diagnosis than with the surgeon's experience.

CONCLUSION

Laparoscopic nephrectomy and nephroureterectomy can be undertaken for a variety of indications with reasonable complication and conversion rates. Although inflammatory conditions increase the difficulty of these procedures, we feel that patients requiring nephrectomy for benign disease should be offered a trial of laparoscopic surgery.