Clinical Trials Study Open Access
Copyright ©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Surg. Mar 27, 2024; 16(3): 807-815
Published online Mar 27, 2024. doi: 10.4240/wjgs.v16.i3.807
Early postoperative complications after transverse colostomy closure, a retrospective study
Fei Liu, Zi-Wei Li, Xiao-Yu Liu, Xu-Rui Liu, Quan Lv, Xin-Peng Shu, Wei Zhang, Dong Peng, Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
Xiao-Juan Luo, Endoscopy Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400012, China
ORCID number: Fei Liu (0000-0002-4022-0732); Zi-Wei Li (0000-0001-9759-4535); Xiao-Yu Liu (0000-0001-9448-4592); Xu-Rui Liu (0000-0002-6069-2104); Xin-Peng Shu (0000-0003-0652-4772); Wei Zhang (0000-0002-5822-9970); Dong Peng (0000-0003-4050-4337).
Co-first authors: Fei Liu and Xiao-Juan Luo.
Author contributions: Liu F and Luo XJ were co-first authors; Luo XJ was thanked for her significant contribution in revising the manuscript; All the authors agreed that Luo XJ was the co-first author; All authors contributed to data collection and analysis, drafting or revising the manuscript, have agreed on the journal to which the manuscript will be submitted, gave final approval of the version to be published, and agree to be accountable for all aspects of the work.
Institutional review board statement: The ethics committee of the First Affiliated Hospital of Chongqing Medical University approved this study, No. K2024-008-01.
Clinical trial registration statement: We don’t need URL registration.
Informed consent statement: Because the data used in this study were obtained from public databases, we applied for a waiver of informed consent.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
Data sharing statement: The datasets used and analyzed during the current study are available from the corresponding author on reasonable request at carry_dong@126.com.
CONSORT 2010 statement: The authors have read the CONSORT 2010 statement, and the manuscript was prepared and revised according to the CONSORT 2010 statement.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Dong Peng, FAASLD, Academic Editor, Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing 400016, China. carry_dong@126.com
Received: October 24, 2023
Peer-review started: October 24, 2023
First decision: December 15, 2023
Revised: January 13, 2024
Accepted: February 7, 2024
Article in press: February 7, 2024
Published online: March 27, 2024
Processing time: 150 Days and 9.1 Hours

Abstract
BACKGROUND

Ostomy is a common surgery usually performed to protect patients from clinical symptoms caused by distal anastomotic leakage after colorectal cancer (CRC) surgery and perforation or to relieve intestinal obstruction.

AIM

To analyze the complications after transverse colostomy closure.

METHODS

Patients who underwent transverse colostomy closure from Jan 2015 to Jan 2022 were retrospectively enrolled in a single clinical center. The differences between the complication group and the no complication group were compared. Logistic regression analyses were conducted to find independent factors for overall complications or incision infection.

RESULTS

A total of 102 patients who underwent transverse colostomy closure were enrolled in the current study. Seventy (68.6%) patients underwent transverse colostomy because of CRC related causes. Postoperative complications occurred in 30 (29.4%) patients and the most frequent complication occurring after transverse colostomy closure was incision infection (46.7%). The complication group had longer hospital stays (P < 0.01). However, no potential risk factors were identified for overall complications and incision infection.

CONCLUSION

The most frequent complication occurring after transverse colostomy closure surgery in our center was incision infection. The operation time, interval from transverse colostomy to reversal, and method of anastomosis might have no impact on the postoperative complications. Surgeons should pay more attention to aseptic techniques.

Key Words: Transverse colostomy closure; Surgery; Complications; A single clinical centre; Risk factors

Core Tip: The current study was conducted to analyze the complications after transverse colostomy closure. A total of 102 patients who underwent transverse colostomy closure were enrolled in the current study. The complication group had longer hospital stay. However, no potential risk factor was identified for overall complications and incision infection. The most frequent complication occurring after transverse colostomy closure surgery in our center was incision infection. Operation time, interval from transverse colostomy to reversal and methods of anastomosis might have no impact on the postoperative complications. Surgeons should pay more attention to aseptic techniques.



INTRODUCTION

Ostomy is a common surgery usually performed to protect patients from clinical symptoms caused by distal anastomotic leakage after colorectal cancer (CRC) surgery and perforation or to relieve intestinal obstruction[1-3]. Given the convenience and validity of preventing anastomotic leakage, some experts have also suggested performing prophylactic ostomy[4-7]. A temporary stoma was usually recommended to be reversed at nearly 3 months after primary surgery[8,9]. However, several studies have reported a high rate of complications after ostomy closure, especially surgical site infections, with the highest rate reaching 40%[10]. Postoperative complications can lengthen hospital stays and cause heavy financial burdens, and severe complications can lead to death[11,12]. For better management of complications, several risk factors for complications have been reported, such as the interval from ostomy to reversal, operation time, blood transfusion and stapled anastomosis[13-17].

Previous studies have compared the incidence of postoperative complications between ileostomy and colostomy closure and found that patients who underwent colostomy closure were more likely to suffer from complications[18-20]. Most studies reporting complications after colostomy closure were conducted at the end of the last century, and the sample sizes were relatively small[21-23]. Furthermore, which factors, such as the time to stoma closure, affect the incidence of complications remains controversial[24-26].

Currently, colostomy, especially transverse colostomy, is still a commonly used type of ostomy. As a result, the purpose of the current study was to analyse complications after transverse colostomy closure and identify relevant risk factors for complications.

MATERIALS AND METHODS
Patients

Patients who underwent transverse colostomy closure surgery from Jan 2015 to Jan 2022 at a single clinical centre were retrospectively enrolled. The ethics committee of the First Affiliated Hospital of Chongqing Medical University approved this study (number K2024-008-01), and the data used in this study were obtained from public databases. No informed consent was needed. This study was conducted in accordance with the World Medical Association Declaration of Helsinki.

Inclusion and exclusion criteria

Patients who underwent transverse colostomy closure surgery for different diseases were included in this study (n = 140). The exclusion criteria were as follows: (1) Incomplete clinical records (n = 15); and (2) patients who had distant metastasis (n = 22); and 102 patients enrolled in this study (Figure 1).

Figure 1
Figure 1 Flow chart of patient selection.
Surgical procedure

The skin and subcutaneous tissue were first incised along the stoma margin, after which the colon was dissociated from the abdominal wall, the scar tissue around the stoma margin was removed, and the bowel was trimmed. Next, the two ends of the stoma were anastomosed with an anastomosis. Finally, the abdominal wall incision was sutured intermittently with silk threads (Figure 2).

Figure 2
Figure 2 Surgery procedure. A: Image of transverse loop stoma; B: Surgical site after transverse colostomy closure.
Data collection

The clinical characteristics included age, sex, body mass index, smoking status, drinking status, hypertension, type 2 diabetes mellitus (T2DM), preoperative haemoglobin, preoperative albumin, interval from transverse colostomy to reversal, method of anastomosis, operation time, blood loss, hospital stay, cause of transverse colostomy and complications were obtained from the electronic medical record system. Postoperative complications were classified on the basis of the Clavien-Dindo classification[27].

Statistical analysis

Continuous variables are expressed as the mean ± SD, and an independent sample t test was used to compare the differences between the complication group and the no complication group. Categorical variables are expressed as absolute values and percentages, and the chi-square test or Fisher’s exact test was used. Logistic regression analyses were also conducted to identify independent factors for overall complications and incisional infection. The data were analysed using SPSS (version 22.0) statistical software. A bilateral P value < 0.05 was considered to indicate statistical significance.

RESULTS
Baseline characteristics of included patients

A total of 102 patients who underwent colostomy closure surgery were enrolled in the current study. The average age of those patients was 57.7 years. Sixty-one (59.8%) patients were males, and 40 (40.2%) patients were females. Postoperative complications occurred in 30 (29.4%) patients. More information is provided in Table 1.

Table 1 Clinical characteristics, n (%).
Characteristics
No. (n = 102)
Age, yr 57.7 ± 12.7
Sex
        Male61 (59.8)
        Female41 (40.2)
BMI, kg/m222.4 ± 3.2
Smoking42 (41.2)
Drinking36 (35.3)
Hypertension21 (20.6)
T2DM9 (8.8)
Pre-operative hemoglobin, g/L129.6 ± 17.4
Pre-operative albumin, g/L42.4 ± 4.4
Interval from transverse colostomy to reversal, month7.3 ± 4.5
Methods of anastomosis
        End-to-end anastomosis25 (24.5)
        End-to-side anastomosis27 (26.5)
        Side-to side anastomosis50 (49.0)
Operation time132.8 ± 64.0
Blood loss43.8 ± 46.7
Hospital stay9.4 ± 9.7
Complications30 (29.4)

In terms of the causes of transverse colostomy, 70 (68.6%) patients underwent surgery because of CRC-related causes, including anastomotic leakage after CRC surgery (32.4%), prophylactic transverse colostomy after CRC surgery (29.4%), and obstruction of CRC (3.9%). Other related causes involved perforation because of trauma (15.7%), obstruction (6.8%) and so on (Table 2).

Table 2 The causes of transverse colostomy, n (%).
Characteristics
No. (n = 102)
CRC related causes70 (68.6)
        Perforation of CRC1 (1.0)
        Obstruction of CRC4 (3.9)
        Anastomotic leakage after CRC surgery33 (32.4)
        Prophylactic transverse colostomy after CRC surgery30 (29.4)
        Rectovaginal fistula after CRC surgery1 (1.0)
        Anastomotic bleeding after CRC surgery1 (1.0)
Other related causes32 (31.4)
        Colorectal benign tumors3 (2.9)
        Perforation because of trauma16 (15.7)
        Rectovesical fistula6 (5.9)
        Obstruction7 (6.8)

The most frequent complication occurring after colostomy closure surgery was incision infection (46.7%), followed by pulmonary infection (13.3%), ileus (13.3%), anastomotic leakage (10%), abdominal infection (10%), and bleeding (6.7%). Moreover, 4 (13.3%) patients had complications ≥ grade III (requiring surgical, endoscopic or radiological intervention), including severe ileus (6.6%) and anastomotic leakage (6.6%; Table 3).

Table 3 Complications of the included patients, n (%).
Characteristics
No. (n = 30)
Grade I-II complications26 (86.7)
        Pulmonary infection4 (13.3)
        Abdominal infection3 (10.0)
        Incision infection14 (46.7)
        Anastomotic leakage1 (3.3)
        Ileus2 (6.7)
        Bleeding2 (6.7)
≥ Grade III complications4 (13.3)
        Anastomotic leakage2 (6.7)
        Ileus2 (6.7)
Comparison between the complication group and the no complication group

The complication group had longer hospital stays (P < 0.01). However, there were no differences in terms of the method of anastomosis (P = 0.63), preoperative haemoglobin concentration (P = 0.32), preoperative albumin concentration (P = 0.17), operation time (P = 0.69), blood loss (P = 0.61) or other characteristics (P > 0.05; Table 4).

Table 4 Comparison between the complication group and the no complication group, n (%).
Characteristics
Complications (n = 30)
No complications (n = 72)
P value
Age, yr58.3 ± 11.357.5 ± 13.30.756
Sex0.677
        Male17 (56.7)44 (61.1)
        Female13 (43.3)28 (38.9)
BMI, kg/m222.3 ± 2.922.4 ± 3.30.85
Smoking12 (40.0)30 (41.7)0.876
Drinking13 (43.3)23 (31.9)0.273
Hypertension6 (20.0)15 (20.8)0.924
T2DM2 (6.7)7 (9.7)1
Pre-operative hemoglobin, g/L126.9 ± 20.0130.7 ± 16.20.322
Pre-operative albumin, g/L41.5 ± 4.142.8 ± 4.50.174
Interval from transverse colostomy to reversal, month7.8 ± 6.27.1 ± 3.60.452
Methods of anastomosis0.633
        End-to-end anastomosis8 (26.7)27 (37.5)
        End-to-side anastomosis6 (20.0)21 (29.7)
        Side-to side anastomosis16 (53.3)24 (33.3)
Operation time133.0 ± 57.3132.7 ± 67.00.979
Blood loss47.4 ± 54.942.3 ± 43.10.617
Hospital stay15.4 ± 16.06.9 ± 2.7< 0.01a
Logistic regression of overall complications and incisional infection

Univariate logistic regression analysis was also conducted to identify potential risk factors for overall complications and incision infection. However, no potential risk factors were identified in this study (P > 0.05; Table 5).

Table 5 Univariate logistic regression analysis of overall complications and incision infection.
Risk factors
Univariate analysis of overall complications
Univariate analysis of incision infection
OR (95%CI)
P value
OR (95%CI)
P value
Age, yr1.005 (0.972-1.040)0.7540.977 (0.935-1.021)0.296
Sex (male/female)1.202 (0.507-2.850)0.6770.802 (0.248-2.593)0.713
BMI, Kg/m20.987 (0.862-1.129)0.8480.988 (0.827-1.182)0.898
Hypertension (yes/no)0.950 (0.329-2.742)0.9241.061 (0.267-4.206)0.933
T2DM (yes/no)0.663 (0.130-3.394)0.6220.769 (0.089-6.669)0.812
Smoking (yes/no)0.933 (0.392-2.223)0.8762.118 (0.676-6.636)0.198
Drinking (yes/no)1.629 (0.679-3.911)0.2752.034 (0.652-6.349)0.221
Pre-operative hemoglobin, g/L0.988 (0.964-1.012)0.3200.989 (0.958-1.021)0.509
Pre-operative albumin, g/L0.934 (0.847-1.031)0.1750.957 (0.843-1.086)0.494
Operation time, min1.000 (0.993-1.007)0.9790.995 (0.984-1.007)0.413
Blood loss, mL1.002 (0.993-1.011)0.6140.995 (0.980-1.010)0.528
Interval from transverse colostomy to reversal, month1.035 (0.946-1.133)0.4541.033 (0.926-1.153)0.562
Methods of anastomosis (Side-to side/end-to-side/end-to-end)1.046 (0.622-1.761)0.8641.664 (0.734-3.774)0.223
DISCUSSION

In this study, a total of 102 patients who underwent transverse colostomy closure surgery were enrolled. Postoperative complications occurred in 30 (29.4%) patients. The most frequent complication occurring after colostomy closure surgery was incision infection, with an incidence of 13.7%. The complication group had longer hospital stays than did the no complication group. Furthermore, logistic regression analyses included factors such as operation time, interval from transverse colostomy to reversal, and method of anastomosis; however, no potential risk factors were identified for overall complications or incision infection.

Previous studies have reported complications after transverse colostomy closure surgery. Aston and Everett[24] enrolled 100 patients who had a temporary transverse loop colostomy closed between 1969 and 1982; they found that the most frequent complication was faecal fistula (10%) and stressed that closing the stoma within 3 wk was as safe as closing it within 8 wk. Henry and Everett[21] reported that fistula formation at the site of closure was the most frequent complication. However, with the development of surgical techniques and clinical management, the incidence of complications in recent years has changed. Pokorny et al[16] and Rullier et al[18] reported that wound infection was the most frequent complication, with incidences of 9.0% and 8.9%, respectively, which was in accordance with our studies. In our study, the incidence of incision infection was 13.7%. Although incisional infection after transverse colostomy closure is usually not life-threatening, it increases the cost of hospitalization and pain of patients. Gonzalez et al[28] reported that age, operation time, and cardiac risk factors were found to be independent risk factors for surgical site infection; however, our study did not identify any risk factors, possibly because of the relatively small sample size. More measures should be taken to decrease the incidence of incision infection, including better management of T2DM, purse-string skin closure, an open incision, and a large surgeon volume[26,29,30].

Although the complication group had longer hospital stays, no significant differences were found in terms of the method of anastomosis, operation time or other characteristics, and no risk factors were found. These findings prompted us to further investigate the possible reasons for complications, such as the experience of surgeons and surgical techniques.

The interval from ostomy to reversal was the most common risk factor for postoperative complications, but this topic remains controversial. In 2019, Krebs et al[25] reported that the time to stoma closure was an independent risk factor for complications after diverting stoma closure, and the optimal cut-off was 240 d[25]. Conversely, a meta-analysis of 7 randomized controlled trials demonstrated that early stoma closure (4 wk) was as safe as routine surgery (8 wk)[31]. Pokorny et al[16] and Aston and Everett[24] reported that the interval was not an independent predictor of complications. Because stoma closure was performed at different times, the conclusions might vary. Our study showed that the interval (ranging from 1.2-14 months) from transverse colostomy closure to reversal did not seem to influence the incidence of complications. The conclusion above might indicate that the time to perform transverse colostomy closure should be individualized and adjusted for various reasons, such as chemotherapy, primary disease, and complications after primary surgery.

To our knowledge, this is the first study to analyse postoperative complications and predictors, especially for patients who underwent transverse colostomy closure. Although several studies have reported complications after stoma closure and relevant risk factors, they did not separate ileostomy closure from colostomy closure. Because of the greater incidence of complications after colostomy closure than after ileostomy, the current study was necessary.

Some limitations of our study should be considered. First, the retrospective nature of the single-centre study indicated unavoidable selection bias. Second, only 102 patients were enrolled in this study, which was a small sample size. Moreover, additional parameters need to be included to identify risk factors. Thus, further multicentre prospective studies with large sample sizes are needed.

CONCLUSION

In conclusion, the most frequent complication occurring after colostomy closure surgery was incision infection. The operation time, interval from transverse colostomy to reversal, and method of anastomosis might have no impact on postoperative complications.

ARTICLE HIGHLIGHTS
Research background

Previous studies comparing the incidence of postoperative complications in patients with ileostomy and colostomy closure have found that patients undergoing colostomy closure are more likely to experience complications. Most of the studies reporting post-colonostomy complications were conducted at the end of the last century with relatively small sample sizes.

Research motivation

At present, colostomy, especially transverse colostomy, is still a common type of colostomy.

Research objectives

The aim of this study was to analyze complications after transverse colostomy closure and to identify risk factors associated with complications.

Research methods

This article used a retrospective study method to include 102 patients at a single clinical centre. The differences between the complication group and the no complication group were compared. Logistic regression analyses were conducted to find independent factors for overall complications or incision infection.

Research results

A total of 102 patients who underwent transverse colostomy closure were enrolled in the current study. Seventy (68.6%) patients underwent transverse colostomy because of colorectal cancer related causes. Postoperative complications occurred in 30 (29.4%) patients and the most frequent complication occurring after transverse colostomy closure was incision infection (46.7%). The complication group had longer hospital stays (P < 0.01). However, no potential risk factors were identified for overall complications and incision infection.

Research conclusions

Finally, we found that the most common complication after colostomy closure was wound infection. Operation time, time interval between transverse colostomy and reversal, and anastomosis method had no effect on postoperative complications.

Research perspectives

The study will conduct to analyze the overall survival after transverse colostomy closure.

Footnotes

Provenance and peer review: Unsolicited article; Externally peer reviewed.

Peer-review model: Single blind

Specialty type: Gastroenterology and hepatology

Country/Territory of origin: China

Peer-review report’s scientific quality classification

Grade A (Excellent): 0

Grade B (Very good): B

Grade C (Good): 0

Grade D (Fair): 0

Grade E (Poor): 0

P-Reviewer: Baryshnikova NV, Russia S-Editor: Li L L-Editor: A P-Editor: Cai YX

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