Laparoscopic Approach in Colonic Diverticulitis: Dispelling Myths and Misperceptions

Open Versus Minimally Invasive Emergent Colectomy for Diverticulitis

BACKGROUND

The role of minimally invasive surgery (MIS) in the acute management of diverticulitis remains controversial. Using a national cohort, we examined the relationship between operative approaches with acute clinical and financial outcomes.

METHODS

Adults undergoing emergent colectomy for diverticulitis were tabulated from the 2015-2020 American College of Surgeons National Surgical Quality Improvement Program. Regression models were developed to analyze the association between open and MIS approaches with major adverse events (MAE), as well as secondary endpoints. A subgroup analysis was conducted to compare outcomes between open and MIS requiring conversion to open (CTO).

RESULTS

Of 9194 patients, 1580 (17.3%) underwent MIS colectomy. The proportion of MIS resection increased from 15.1% in 2015 to 19.1% in 2020 (nptrend<.001). Compared to Open, MIS patients were younger, equally likely to be female, had a lower proportion of patients with ASA class ≥3, and a higher BMI. Preoperatively, MIS patients were less frequently diagnosed with sepsis. Following adjustment with open as reference, MIS approach had reduced odds of MAE (AOR .56), ostomy creation (AOR .12), shorter postoperative length of stay (LOS; β -1.63), and a lower likelihood of nonhome discharge (AOR .45, all P < .001). Additionally, CTO was linked to decreased likelihood of MAE (AOR .78, P = .01), ostomy creation (AOR .02, P < .001), comparable LOS (β -.46, P = .41), and reduced odds of nonhome discharge (AOR .58, P < .001), relative to open.

DISCUSSION

Compared to planned open colectomy, MIS resection was associated with improved clinical and financial outcomes, even in cases of CTO. Our findings suggest that whenever possible, MIS should be attempted first in emergent colectomy for diverticulitis. Nevertheless, future prospective studies are likely needed to further elucidate specific patient and clinical factors.

Long-Term Functional Results of a Modified Caudal-to-Cranial Approach in Laparoscopic Segmental Left Colectomy for Diverticular Disease

A modified caudal-to-cranial approach to perform laparoscopic left colectomy for benign diseases has been recently designed to facilitate the low-tie mesenteric dissection. A chart review has been performed including all consecutive patients with uncomplicated diverticulitis who have been treated by segmental left colectomy with a caudal-to-cranial approach. A total of 34 patients were included in the study. 21 patients were male, mean age was 54.1 ± 11.3, and mean BMI was 26 ± 5.5. Patients with ASA Score I were 7, with ASA II were 9, and with ASA Score III were 5. Incontinence Score (IS) resulted in an average of 5 ± 2, 2 grade of incontinence and the CS score showed an average of 10 ± 3, 2 grade of constipation. Health status, evaluated by Short Form-36 questionnaire, was demonstrated in these patients' great physical function, role, general health, and social function. The anorectal manometry performed 6 months after surgery showed a normal value in terms of the anal resting pressure (47 ± 13 mmHg) and an increased volume to stimulate desire to defecate (197 ± 25 ml). The length of the anal sphincter was normal compared to the reference value (37 ± 5.4 mm). Although further studies are required to obtain definitive conclusions, our results are encouraging to propose low-tie segmental colectomy as the standard procedure for the treatment of uncomplicated diverticulitis, and our modified surgical approach could be considered useful to facilitate the surgical approach.

The role of emergency laparoscopic colectomy for complicated sigmoid diverticulits: A systematic review and meta-analysis

BACKGROUND

Nowadays sigmoidectomy is recommended as "gold standard" treatment for generalized purulent or faecal peritonitis from sigmoid perforated diverticulitis. This systematic review and meta-analysis aimed to assess effectiveness and safety of laparoscopic access versus open sigmoidectomy in acute setting.

METHODS

A systematic literature search was performed for randomized controlled trials (RCTs) and non-RCTs published in PubMed, SCOPUS and Web of Science.

RESULTS

The search yielded four non-RCTs encompassing 436 patients undergoing either laparoscopic (181 patients, 41.51%) versus open sigmoid resection (255 patients, 58.49%). All studies reported ASA scores, but only four studies reported other severity scoring systems (Mannheim Peritonitis Index, P-POSSUM). Level of surgical expertise was reported in only one study. Laparoscopy improves slightly the rates of overall post-operative complications and post-operative hospital stay, respectively (RR 0.62, 95% CI 0.49 to 0.80 and MD -6.53, 95% CI -16.05 to 2.99). Laparoscopy did not seem to improve the other clinical outcomes: rate of Hartmann's vs anastomosis, operating time, reoperation rate and postoperative 30-day mortality.

CONCLUSION

In this review four prospective studies were included, over 20 + year period, including overall 400 + patients. This meta-analysis revealed significant advantages associated with a laparoscopic over open approach to emergency sigmoidectomy in acute diverticulitis in terms of postoperative complication rates, although no differences were found in other outcomes. The lack of hemodynamic data and reasons for operative approach hamper interpretation of the data suggesting that patients undergoing open surgery were sicker and these results must be considered with extreme caution and this hypothesis requires confirmation by future prospective randomised controlled trials.

Feasibility and safety of robotic resection of complicated diverticular disease

This study aimed to assess intra- and postoperative outcomes of robotic resection of left-sided complicated diverticular disease. Retrospective analysis of a prospectively maintained institutional database on consecutive patients undergoing elective robotic resection for diverticular disease (2014-2018). All procedures were performed within an enhanced recovery pathway (ERP). Demographic, surgical and ERP-related items were compared between patients with simple and complicated diverticular disease according to intra-operative presentation. Postoperative complications and length of stay were compared between the two groups. Out of 150 patients, 78 (52%) presented with complicated and the remaining 72 (48%) with uncomplicated disease. Both groups were comparable regarding demographic baseline characteristics and overall ERP compliance. Surgery for complicated disease was longer (288 ± 96 vs. 258 ± 72 min, p = 0.04) and more contaminated (≥ class 3: 57.7 vs. 23.6%, p < 0.001) with a trend to higher conversion rates (10.3 vs. 2.8%, p = 0.1). While postoperative overall complications tended to occur more often after resections for complicated disease (28.2 vs. 15.3%, p = 0.075), major, surgical and medical complications did not differ between the two groups, and median length of stay was 3 days in both settings (p = 0.19). Robotic resection of diverticular disease was feasible and safe regardless of disease presentation by the time of surgery.

Emergency Presentations of Diverticulitis

Acute diverticulitis is a common condition that has been increasing in incidence in the United States. It is associated with increasing age, but the pathophysiology of acute diverticulitis is still being elucidated. It is now believed to have a significant contribution from inflammatory processes rather than being a strictly infectious process. There are still many questions to be answered regarding the optimal management of acute diverticulitis because recent studies have challenged traditional practices, such as the routine use of antibiotics, surgical technique, and dietary restrictions for prevention of recurrence.

Acute Diverticulitis Management

Diverticular disease accounts for approximately 300,000 hospitalizations per year in the United States, resulting in 1.5 million days of inpatient care. Diverticulitis is defined as an inflammation of the diverticulum, which can be asymptomatic or symptomatic. This disease is the third most common gastrointestinal illness that requires hospitalization and the leading indication for elective colon resection. Abdominal pain is the most common complaint in patients with acute diverticulitis. The pain can be described as cramping, constant, and persistent for several days. Medical management is most often provided with antibiotics and clear liquid diet.