Techniques and Outcomes of Endoscopic Decompression Using Transanal Drainage Tube Placement for Acute Left-sided Colorectal Obstruction

Endoscopic trans-anal tube placement is a safe and helpful tool for colonic decompression: final results of a standardized single-centre retrospective assessment of 125 patients

OBJECTIVES

Endoscopic trans-anal colonic decompression (ECD) may be requested in the case of massive colon distension, but evidence regarding success and safety issues remains scarce. The aim of this analysis is to examine the technical success, complications and clinical outcome in a large series of patients undergoing an ECD in various clinical scenarios. A standardized evaluation system was used to identify the pre-interventional risk parameters that might be helpful to guide clinical decision making.

METHODS

In this single-centre retrospective study, the modified Clavien-Dindo classification (CDC) was applied to assess technical success, complications and clinical outcome of 125 consecutive patients who underwent ECD between 2007 and 2020.

PRIMARY ENDPOINT

post interventional 90-day mortality. Secondary endpoints: periprocedural complications (CDC event IV-V) and technical success rate. All Martin criteria for standardized reporting of complications were met. Uni- and multivariable analyses for prediction of complications were carried out.

RESULTS

The overall technical success rate was 90%. The periprocedural complication rate was low with 3%. Overall 90-day mortality was 31%. Univariable analyses showed a significant correlation between 90-day mortality and ASA≥4 (p<0.001, odds ratio [OR] 15.33), general anaesthesia (p=0.05, OR 21.42) and elevated serological infection parameters (p 0.028, OR 1.004). The pre-interventional multivariable model identified ASA ≥4 (p <0.001; OR 10.94) as the only independent risk factor.

CONCLUSIONS

ECD is a safe, easily available, technical feasible, inexpensive and successful tool for colonic decompression in various colonic obstruction scenarios, even in critically ill patients. ASA Score ≥IV can be helpful to identify patients at risk for complications/mortality after ECD.

Cost-effectiveness of self-expandable metallic stents as bridge to surgery for obstructive colorectal cancer

AIM

Self-expandable metallic stent (SEMS) placement is an emergent decompression approach for patients with obstructive colorectal cancer, alongside drainage tube (DT) and emergency surgery (ES). Few reports have compared the health care cost of each treatment. We aimed to compare the efficacy of SEMS as a bridge to surgery (BTS), including health care costs during decompression and colorectal resection, with those of DT and ES.

METHODS

This retrospective study enrolled patients treated for acute obstructed colorectal cancer at a single institution from January 2007 to December 2019. A total of 45 patients that underwent placement of a DT, emergency colostomy, or SEMS insertion followed by elective radical colectomy or rectectomy for obstructed colorectal cancer were included, and their data were analyzed.

RESULTS

Among 45 patients with obstructive colorectal cancer, 29 (55.6%) patients underwent SEMS, 7 (15.6%) underwent DT, and 9 (20.0%) underwent ES as BTS. The time to oral intake from the decompression treatment in the SEMS group was significantly shorter than that of the DT and ES group (1 vs. 13 vs. 3 day, p < 0.001). Total hospitalization during the decompression and colorectal resection in the SEMS group was significantly shorter that in the DT and ES groups (23 vs. 34 vs. 44 day, p < 0.001). The total health care cost for the decompression and the colorectal resection of DT and SEMS treatment was significantly less inexpensive than ES treatment (180.8 vs. 206.7 vs. 250.3 × 10⁴ yen, p = 0.030).

CONCLUSIONS

SEMS insertion as a BTS might represent a cost-effective and safe approach compared to other treatments.

Endoscopic Management of Benign Colonic Obstruction and Pseudo-Obstruction

There are a variety of causes of intestinal obstruction, with the most common cause being malignant diseases; however, volvulus, inflammatory bowel disease or diverticulitis, radiation injury, ischemia, and pseudo-obstruction can also cause colonic obstruction. These are benign conditions; however, delayed diagnosis of acute intestinal obstruction owing to these causes can cause critical complications, such as perforation. Therefore, high levels of clinical suspicion and appropriate treatment are crucial. There are variable treatment options for colonic obstruction, and endoscopic treatment is known to be a less invasive and an effective option for such. In this article, the authors review the causes of benign colonic obstruction and pseudo-obstruction and the role of endoscopy in treating them.

Oral nutrition for left-sided malignant colonic obstruction after decompression with a transanal drainage tube: A case series of 6 patients

Oral nutrition with a low-residue diet for left-sided malignant colonic obstruction after decompression with a transanal drainage tube is safe and can be considered a viable preoperative management option for appropriate patients.