Introduction
Open adhesiolysis was the favored approach regarding surgical management of intestinal obstruction before being accepted laparoscopic adhesiolysiswidespreadly. Despite the technical difficulties, laparoscopic adhesiolysis in the treatment for intestinal obstruction has been widely accepted as safe and feasible in recent years due to development of surgical techniques and devices. Laparoscopic adhesiolysis has many advantages such as less invasiveness, short hospital day, lesser pain, better cosmetics, and lower incidence of postoperative complication [1]. Our study was designed to investigate the role of laparoscopic adhesiolysis in the treatment of patients with spontaneous and postoperative abdominal pain or recurrent intestinal obstruction, not attributed to other obvious pathology.
Methods
Patients
We retrospectively reviewed the database of 14 patients who underwent laparoscopic adhesiolysis between January 2007 and April 2015. All patients were hospitalized via emergency room and informed about the procedure and consents for surgery were obtained. This study was approved by the Institutional Review Board of the National Medical Center.
At National Medical Center, the indication of laparoscopic adhesiolysis was limited to the patients with a adhesive intestinal obstruction or non-adhesive intestinal obstruction not resolving with non-operative therapy, but without signs of peritonitis or intestinal perforation or ischemia. Also the patients with resolved intestinal obstruction but with history of recurrent bowel obsreuction, chronic small bowel obstruction demonstrated by contrast study, having focal transitional zones on abdominal computed tomography (CT) images were indicated to laparoscopic adhesiolysis. The patients who had twice or more abdominal procedures and operations in conjunction with adhesiolysis, recent abdominal operation within 30 days were excluded from the study. These indications of laparoscopic adhesiolysis were summerized in Table 1.
Table 1
Diagnosis was achieved through a combination of clinical and radiologic parameters.
The characteristics of patients (age, gender, history of abdominal surgery, co-morbidity, and etc.), surgical outcomes (open conversion, mean operative time, blood loss, intra-operative complication, postoperative complication, mortality), and postoperative course (mean time to oral intake, mean postoperative hospital stay, recurrent episode of intestinal obstruction, rate of recurrent intestinal obstruction, and mean follow-up days) were examined.
Statistical analysis was performed using IBM SPSS ver. 21.0 (IBM Co., Armonk, NY, USA).
Surgical techniques
Patients were placed in the supine position, and the operator was standing in distant part of the obstruction lesion. The scopist was positioned on the counter part of the operator. After general anesthesia, Camera trocar was inserted using open access technique in distant part of the obstruction lesion or operation scar for avoiding the bowel injury. The intra-peritoneal pressure was maintained as 11 to 13 mmHg. The position of the patient was changed according to the location of the obstruction lesion, such as the Trendelenburg or reverse Trendelenburg position with the right or left tilting and two or three additional trocars were inserted.
After the full inspection of the intra-abdominal cavity, we tried to find the obstruction point and minimize bowel injury using atraumatic forceps whenever bowel grasping. For adhesiolysis and dissection of tissue, the hook-type dissector with mono-polar coagulation or ultrasonic device was used, We manipulated carefully as possible in order to reduce tissue damage. Anti-adhesive materials were applied in intra-peritoneal cavity at the end of operation.
Postoperative management
Preoperatively inserted nasogastric tube for bowel decompression was removed at the beginning to be visualized the colon gas with improving ileus on simple radiography and then we started sips of water. Without further complications, patients were discharged after tolerance of a soft diet for two more days.
Results
Total patients of intestinal obstruction were 35 patients. Of these, 21 patients who didn’t meet the criteria of laparoscopic adhesiolysis got open procedure. Fourteen patients underwent laparoscopic adhesiolysis. All operations were completed by one surgeon experienced in laparoscopy, at our center under general anesthesia. Patients’characteristics are shown in Table 2, 3. Patients comprised 12 males and two female, with a mean age of 60.1±14.75 years (range, 24 to 81 years). All patients’body mass index were under 30. Five patients had prior abdominal operations. six patients had co-morbidity including diabetes mellitus, hypertension. old pulmonary tuberculosis, chronic obstructive disease, bronchiectasis, cardiac ischemia. The others didn’t have co-morbidity.
Table 2
Variable | Result value |
---|---|
Sex (male:female) | 12:2 |
Mean age (y) | 60.1±14.75 |
Mean BMI (kg/m2) | 22.4±5.27 |
Mean ASA score (point) | 1.9±0.43 |
Adhesive:Non-adhesive | 12:2 |
Table 3
Preoperatively, some patients were worked up extensively with a abdominal-pelvic CT. This study was obtained to get the information of focal transitional zones and rule out obvious intra-abdominal/visceral pathology that would explain the patients’abdominal pain, intestinal obstruction, or both. Only when there were no obvious intra-abdominal/visceral pathology (ex., Cancer, etc.) and focal transitional zones were found in CT images, the patients were considered for laparoscopic adhesiolysis.
Surgical outcomes and postoperative courses were summerized in Table 4. The mean operation time was 98.5 minutes and there was no emergency situation and one case which conversed to mini laparotomy for resection of strictured intestine during operation. The patients were discharged from five days to 14 days following their operations. The mean postoperative hospital day was 6.5 days. There were no postoperative complications and deaths. Postoperatively, all patients had complete resolution of their symptoms (overall 100% response to adhesiolysis). The mean time to oral intake is 3.4 days, respectively. The patient who had recurrent episode of intestinal obstruction after operation was one. Recurrent rate of intestinal obstruction was 7.1%. The mean follow-up duration was 5.3 months.
Table 4
The causes of adhesive intestinal obstruction included tuberculous peritonitis, periappendiceal abscess, serosal fibrosis and chronic inflammation of intestine, gastric volvulus by fibrotic band. Two patients were non-adhesive intestinal obstruction. The causes of non-adhesive intestinal obstruction were intussusception which was due to trichuriasis infestation and small bowel stricture which was occurred by non-specific small bowel ulcer.
Discussion
Major abdominal operations often result in random and unpredictable intra-abdominal adhesions. Intra-abdominal adhesions are strands or membranes of fibrous tissue that can be attached to the various intra-abdominal organs, gluing them strongly together [2]. It may result in symptomatic intestinal obstruction [3]. In addition, intestinal obstruction also can be occurred because of unknown reasons. Abdominal adhesions pose a significant health problem with major adverse effects on quality of life, use of health care resources, and financial costs. Incidence rates for abdominal adhesions have been estimated to be as high as 94 [4]∼95% [5] after laparotomies [2], and rates of symptomatic small bowel obstruction were known to be 49∼74% [2].
Laparoscopic adhesioloysis appears to be a good method with which to evaluate patients with symptoms of recurrent abdominal pain after previous operation and after sufficient exclusion of other organic or functional disorders [6]. Also Laparoscopic adhesiolysis has been shown to be safe and feasible in highly selective cases [1]. In highly selected patients, laparoscopic adhesiolysis offers the advantages of decreased length of stay, faster return to full activity, and decreased morbidity [1]. At our institution, the indication of laparoscopic adhesiolysis was limited to the patients with an adhesive intestinal obstruction or non-adhesive intestinal obstruction not resolving with non- operative therapy, but without signs of peritonitis or intestinal perforation or ischemia or sepsis. If malignancy was not suspicious, laparoscopic adhesiolysis was undergone. The patients with resolved intestinal obstruction but with history of recurrent, chronic small bowel obstruction demonstrated by contrast study, having focal transitional zones on abdominal CT images were indicated to laparoscopic adhesiolysis. When the cause of obstruction was a single band, laparoscopic adhesiolysis was successful 100% of the time [7]. The patients who had twice or more abdominal procedures and operations in conjunction with adhesiolysis, recent abdominal operation within 30 days were excluded from the study.
The mean operation time was 98.5 minutes and there was no emergency situation and one case which conversed to laparotomy for resection of strictured intestine during operation in our study. In other literatures, operative times range from 58 to 108 minutes for laparoscopic cases and up to 208 minutes for cases that are converted to a laparotomy [8,9]. So the patients who need a short operation time (ex. pulmonary co-morbidity, etc.) were favored to laparoscopic adhesiolysis. In our study, patients were discharged from five days to 14 days following their operations. The mean postoperative hospital day was 7.5, respectively. Nagle et al.[1] reported hospital length of stay in most series was four to six days for the laparoscopic group and around 12 days for the laparotomy group.
Laparoscopic adhesiolysis had low postoperative complication rate and mortality rate. Levard et al.[10] reported the incidence of postoperative complications to be 1.2% in the laparoscopic group compared with 10% in the laparotomy group (p<0.001). The reported mortality ranges from 0∼3% [1]. No postoperative complications and deaths were occurred in our study.
The mean time to oral intake is 3.4 days. In accordance of Zerey et al.[11], intestinal function returned in 2.5 days. So it was good to start a meal on postoperative three days after laparoscopic adhesiolysis.
All patients had complete resolution of their symptoms after surgery (overall 100% response to adhesiolysis). The patient who had recurrent episode of intestinal obstruction after operation was one. Recurrent rate of intestinal obstruction was 7.1%. Navez et al.[7] reported that 85% of the patients (29 of 34) treated laparoscopically were asymptomatic with a mean follow-up of 46 months. The series with the longest follow-up (mean, 61.7 months) reported 87.5% of the patients (14 of 16) treated laparoscopically were asymptomatic [12]. Furthermore, Khaitan et al.[13] have described a new technique of applying Seprafilmlaparoscopically, which could further decrease the recurrence of adhesive intestinal obstruction. However, some authors have criticized the laparoscopic approach, stating that a suboptimal intra-operative evaluation of the patient and incomplete lysis of adhesions are performed, resulting in higher reoperation rates [14,15]. But, this was not our experience. Mean follow-up was 5.3 months. The largest series is a multicenter study of 308 patients, but the data are retrospective and the follow-up is only 1.6 months [10].
It is important to recognize several limitations of this study. First, the cases of laparoscopic adhesiolysis were small. The patients suitable for the indication of laparoscopic adhesiolysis were two to three person per one year. Therefore, multicentre participation was necessary for extracting better outcome. Second, the long-term results regarding recurrence are limited due to loss of follow-up. Third, cost analysis has not been addressed in our study. Fourth, there were not results compared laparoscopic adhesiolysis with open adhesiolysis in our study. Fifth, this report may have errors of retrospective studies. Therefore, these limitations might have influenced outcomes.
Despite of these limitations, our study remained that laparoscopic adhesiolysis has been shown to be safe and feasible. Laparoscopic adhesiolysis offers the advantages of decreased length of stay, faster return to full activity, and decreased morbidity too. However careful patient selection is necessary and laparoscopic adhesiolysis must be undergone in highly selected cases.