Current state of minimally invasive general surgical practice in Africa: A systematic review and meta-analysis of the laparoscopic procedures performed and outcomes

BACKGROUND

Minimally invasive surgery, including laparoscopy and robotics, has significantly improved general surgical (GS) practice globally. While robot-assisted GS practice is yet to be adopted in the majority of Africa, laparoscopy has been utilized to improve surgical outcomes. This study aims to review the laparoscopic GS procedures (LGSPs) performed and evaluate outcomes such as conversion to open surgery, morbidity, and mortality in Africa.

METHODS

Four databases (PubMed, Google Scholar, WoS, and AJOL) were searched, identifying 8022 publications. Following screening, 40 studies across Africa that reported LGSPs (n ≥ 2) performed and outcomes met the inclusion criteria. A meta-analysis conducted using R statistical software estimated the pooled prevalences with the 95% CI of conversion, morbidity, and mortality.

RESULTS

A total of 6381 procedures performed in 15 African countries were analyzed in this study. Majority, 72.89%, of the procedures were performed in Senegal, South Africa, and Nigeria. The major procedures performed were cholecystectomy (37.09%), appendicectomy (33.36%), and diagnostic laparoscopy (9.98%). The meta-analysis revealed a conversion rate of 5% [95% CI: 4, 7]. Adhesion (28.13%), hemorrhage (16.67%), technical difficultly (12.50%), and equipment failure (11.46%) were the predominant indications for conversion. Surgical site infection (42.75%) was the major cause of morbidity. The prevalences of morbidity and mortality were 7% [95% CI: 5, 10] and 0.12% [95% CI: 0, 0.29], respectively.

CONCLUSION

A wide range of basic and advanced LGSPs were performed. The outcomes obtained indicate successful implementation of the laparoscopic approach. Importantly, this study serves as a foundational work for further research on minimally invasive surgery in Africa.

Association of hospital volume with conversion to open from minimally invasive colectomy in patients with diverticulitis: A national analysis

BACKGROUND

Despite the known advantages of minimally invasive surgery (MIS) for diverticular disease, the impact of conversions to open (CtO) colectomy remains understudied. The present study used a nationally representative database to characterize risk factors and outcomes associated with CtO in patients with diverticular disease.

METHODS

All elective adult hospitalizations entailing colectomy for diverticulitis were identified in the 2017-2019 Nationwide Readmissions Database. Annual institutional caseloads of MIS and open colectomy were independently tabulated. Restricted cubic splines were utilized to non-linearly estimate the risk-adjusted association between hospital volumes and CtO. Additional regression models were developed to evaluate the association of CtO with outcomes of interest.

RESULTS

Of an estimated 110,281 patients with diverticulitis who met study criteria, 39.3% underwent planned open colectomy, 53.3% completed MIS, and 7.4% had a CtO. Following adjustment, an inverse relationship between hospital MIS volume and risk of CtO was observed. In contrast, increasing hospital open volume was positively associated with greater risk of CtO. On multivariable analysis, CtO was associated with lower odds of mortality (AOR 0.3, p = 0.001) when compared to open approach, and similar risk of mortality when compared to completed MIS (AOR 0.7, p = 0.436).

CONCLUSION

In the present study, institutional MIS volume exhibited inverse correlation with adjusted rates of CtO, independent of open colectomy volume. CtO was associated with decreased rates of mortality compared to planned open approach but equivalence risk relative to completed MIS. Our findings highlight the importance of MIS experience and suggest that MIS may be safely pursued as the initial surgical approach among diverticulitis patients.

Impact of operation duration on postoperative outcomes of minimally-invasive right colectomy

AIM

Operation time (OT) is a key operational factor influencing surgical outcomes. The present study aimed to analyse whether OT impacts on short-term outcomes of minimally-invasive right colectomies by assessing the role of surgical approach (robotic [RRC] or laparoscopic right colectomy [LRC]), and type of ileocolic anastomosis (i.e., intracorporal [IA] or extra-corporal anastomosis [EA]).

METHODS

This was a retrospective analysis of the Minimally-invasivE surgery for oncological Right ColectomY (MERCY) Study Group database, which included adult patients with nonmetastatic right colon adenocarcinoma operated on by oncological RRC or LRC between January 2014 and December 2020. Univariate and multivariate analyses were used.

RESULTS

The study sample was composed of 1549 patients who were divided into three groups according to the OT quartiles: (1) First quartile, <135 min (n = 386); (2) Second and third quartiles, 135-199 min (n = 731); and (3) Fourth quartile ≥200 min (n = 432). The majority (62.7%) were LRC-EA, followed by LRC-IA (24.3%), RRC-IA (11.1%), and RRC-EA (1.9%). Independent predictors of an OT ≥ 200 min included male gender, age, obesity, diabetes, use of indocyanine green fluorescence, and IA confection. An OT ≥ 200 min was significantly associated with an increased risk of postoperative noninfective complications (AOR: 1.56; 95% CI: 1.15-2.13; p = 0.004), whereas the surgical approach and the type of anastomosis had no impact on postoperative morbidity.

CONCLUSION

Prolonged OT is independently associated with increased odds of postoperative noninfective complications in oncological minimally-invasive right colectomy.

Assessing the role of minimally invasive radical hysterectomy for early-stage cervical cancer

Surgery is the mainstay of treatment in the management of early-stage cervical cancer. Until the publication of the Laparoscopic Approach to Cervical Cancer (LACC) trial, minimally invasive radical hysterectomy was the recommended approach to treat patients with early-stage disease. The results of the LACC trial questioned the adoption of minimally invasive surgery in cervical cancer. In comparison with the open approach, minimally invasive surgery correlated with worse disease-free and cancer-specific survival. Similarly, other retrospective studies highlighted this correlation, thus corroborating the results of the LACC trials. In the present review, we evaluated current evidence and further prospective of the adoption of minimally invasive radical hysterectomy in cervical cancer. Moreover, we sought to assess some unsolved issues regarding the role of minimally invasive surgery in early-stage cervical cancer patients.

The effect of operative duration on the outcome of colon cancer procedures

BACKGROUND

Prolonged operative duration has been associated with increased post-operative morbidity in numerous surgical subspecialties; however, data are limited in operations for colon cancer specifically and existing literature makes unwarranted methodological assumptions of linearity. We sought to assess the effects of extended operative duration on perioperative outcomes in those undergoing segmental colectomy for cancer using a methodologically sound approach.

METHODS

We conducted a retrospective cohort study of patients undergoing segmental colectomy for cancer between 2014 and 2018, logged in the National Surgical Quality Improvement Program datasets. Our primary outcome was a composite of any complication within 30 days; secondary outcomes included length of stay and discharge disposition. Our main factor of interest was operative duration.

RESULTS

We analyzed 26,380 segmental colectomy cases, the majority of which were approached laparoscopically (64.95%) and were right sided (62.93%). Median operative duration was 152 (95% CI 112-206) minutes. On multivariable regression, increased operative duration was linearly associated with any complication (OR = 1.003, 95% CI 1.003-1.003, p < 0.0001) in the overall cohort, as was length of stay (p < 0.0001). All subgroups except for the laparoscopic left colectomy group were linearly associated with operative duration. In the laparoscopic left colectomy group, an inflection point in the odds of any complication was found at 176 min (OR = 1.39, 95% CI 1.20-1.61, p < 0.0001).

CONCLUSIONS

This study suggests that the risk of perioperative complications increases linearly with increasing operative duration, where each additional 30 min increases the odds of complication by 10%. In those undergoing laparoscopic left colectomy, the risk of complications sharply increases after ~ 3 h, suggesting that surgeons should aim to complete these procedures within 3 h where possible.

Effect of Ultrasound-Guided Quadratus Lumborum Block Preemptive Analgesia on Postoperative Recovery of Patients with Open Radical Colon Cancer Surgery: A Retrospective Study

Purpose

To evaluate the effect of ultrasound-guided quadratus lumborum block (QLB) preemptive analgesia on recovery in colon cancer patients undergoing open radical surgery and provide reference for its clinical application.

Methods

From July 2019 to June 2020, according to the anesthesia method, 56 patients who received open radical colon surgery were divided into two groups: Group Q (n=27), which received QLB combined general anesthesia, and Group C (n=29), which received general anesthesia only. Both groups were given self-controlled intravenous analgesia pump after surgery. The primary outcome is a series of parameters representing postoperative recovery. The secondary outcome was VAS scores and opioid consumption.

Results

The first time of getting up, flatus, taking semi-liquid diet and the postoperative hospital stay in Group Q were significantly reduced (P<0.01). The rest and active VAS scores were significantly lower in Group Q (P<0.01). The opioids consumption was significantly decreased in Group Q (P<0.05).

Conclusion

The application of ultrasound-guided QLB preemptive analgesia in open radical colon cancer surgery can significantly enhance the postoperative analgesia effect, reduce opioid consumption, and accelerate the postoperative recovery of the patients.

Clinical Trial Registration Number

The Chinese Clinical Trial Registry (ChiCTR-2000034824).

European multicenter propensity score match study of laparoscopic vs. open colectomy for splenic flexure carcinomas: Results from the Splenic Flexure Cancer (SFC) Study Group

AIM OF THE STUDY

This European multicenter study aims to compare the results of laparoscopic versus laparotomy approach for the resection of splenic flexure colon carcinoma (SFC).

PATIENTS AND METHODS

Patients with SFC who required curative resection by laparoscopy (LAP) or laparotomy (OPEN) between 2000 and 2018 were included. Three types of interventions were considered: extended right hemi-colectomy, left hemi-colectomy and splenic flexure resection. The LAP and OPEN groups were matched according to propensity score and compared with Chi-square, Mann-Whitney tests, and multivariate regression models. Overall survival and recurrence-free survival were assessed using the Kaplan-Meier method.

RESULTS

The study population consisted of 399 patients, including 297 operated by LAP and 102 by OPEN. Extended right hemi-colectomy was performed in 35.8% of cases, left hemi-colectomy in 32.8% and splenic flexure resection in 31.4%. After propensity score matching, the LAP (n=64) and OPEN (n=64) groups were comparable for all pre-operative variables and tumor characteristics. The LAP group showed less blood loss and a shorter interval to return of transit and feeding compared to the OPEN group, regardless of the resection technique. There were no differences between the groups in terms of overall survival and 5-year recurrence-free survival.

CONCLUSION

These results support the application of laparoscopy for the resection of SFC.

Emergency surgery for splenic flexure cancer: results of the SFC Study Group database

Background

The effectiveness of surgical treatment for splenic flexure carcinomas (SFCs) in emergency settings remains unexplored. This study aims to compare the perioperative and long-term outcomes of different alternatives for emergency SFC resection.

Method

This multicenter retrospective study was based on the SFC Study Group database. For the present analysis, SFC patients were selected if they had received emergency surgical resection with curative intent between 2000 and 2018. Extended right colectomy (ERC), left colectomy (LC), and segmental left colectomy (SLC) were evaluated and compared.

Results

The study sample was composed of 90 SFC patients who underwent emergency ERC (n = 55, 61.1%), LC (n = 18, 20%), or SLC (n = 17, 18.9%). Bowel obstruction was the most frequent indication for surgery (n = 75, 83.3%), and an open approach was chosen in 81.1% of the patients. A higher incidence of postoperative complications was observed in the ERC group (70.9%) than in the LC (44.4%) and SLC groups (47.1%), with a significant procedure-related difference for severe postoperative complications (Dindo-Clavien ≥ III; adjusted odds ratio for ERC vs. LC:7.23; 95% CI 1.51-34.66; p = 0.013). Anastomotic leakage occurred in 8 (11.2%) patients, with no differences between the groups (p = 0.902). R0 resection was achieved in 98.9% of the procedures, and ≥ 12 lymph nodes were retrieved in 92.2% of patients. Overall and disease-free survival rates at 5 years were similar between the groups and were significantly associated with stage pT4 and the presence of synchronous metastases.

Conclusion

In the emergency setting, ERC and open surgery are the most frequently performed procedures. ERC is associated with increased odds of severe postoperative complications when compared to more conservative SFC resections. Nonetheless, all the alternatives seem to provide similar pathologic and long-term outcomes, supporting the oncological safety of more conservative resections for emergency SFCs.

Long-term oncologic outcome and risk factors after conversion in laparoscopic surgery for colon cancer

PURPOSE

The goal of this study was to evaluate the long-term oncologic outcomes after laparoscopic converted surgery for patients with colon cancer.

METHODS

Retrospective database of consecutive curative-intent laparoscopic-assisted surgery for primary stage I-III colon cancer was reviewed from 2000 to 2013. The patients were divided into non-conversion and conversion groups. The patient characters, operative features, perioperative parameters, pathologic features, and oncologic outcomes were compared.

RESULTS

A total of 4010 patients were included in the study: 3929 in the non-conversion group and 81 (2%) in the conversion group. The median follow-up period was 63.9 months. There were significant differences in age, preoperative clinical T-stage, and tumor size between the groups. In operative details between the two groups, there were also significant differences in access to surgery, tumor location, cancer obstruction, cancer perforation, and estimated blood loss (P < 0.001). The two most common reasons for conversion were adhesion (n = 37, 46%) and bleeding (n = 21, 26%). Multivariate analysis showed that conversion was an independent predictor of both overall survival (OS) (P < 0.001) and disease-free survival (P = 0.003). The 5-year OS rate of the conversion group was 79.6%, and that of the non-conversion group was 96.2% (P < 0.001). The multivariate predictors of conversion were age, type of surgery, cancer obstruction, cancer perforation, and clinical T-stage.

CONCLUSION

Conversion to open surgery may affect patient survival and recurrence after laparoscopic-assisted surgery for colon cancer. Our data suggest that conversion is associated with poor outcomes, but we should not hesitate to convert it to patients who have difficulty in laparoscopic surgery.

Extended right colectomy, left colectomy, or segmental left colectomy for splenic flexure carcinomas: a European multicenter propensity score matching analysis

BACKGROUND

The surgical resection of the splenic flexure carcinoma (SFC) is challenging and the optimal surgical procedure for SFCs remains a matter of debate. The present study aimed to compare in a multicenter European sample of patients the short- and long-term outcomes of extended right (ERC) vs. left (LC) vs. segmental left colectomy (SLC) for SFCs.

METHODS

This retrospective multicenter study analyzed the surgical and oncological outcomes of SFC patients undergoing elective curative intent surgery between 2000 and 2018. Descriptive and exploratory analyses were first conducted on the whole sample. Outcomes of the different procedures (ERC vs. LC vs. SLC) were then compared using propensity score matching for multilevel treatment. Overall (OS) and disease-free survival (DFS) were evaluated by Kaplan-Meier method.

RESULTS

From a total of 399 SFC patients, 143 (35.8%) underwent ERC, 131 (32.8%) underwent LC, and 125 (31.4%) underwent SLC. Overall, 297 (74.4%) were laparoscopic procedures. An increase in operative time, time to flatus, time to regular diet, and hospital stay was observed with the progressive extension of SFC resection. ERC was associated with significantly increased risk of postoperative ileus compared to both LC and SLC. A significantly greater number of lymph nodes were retrieved by ERC, but the objective of at least 12 retrieved lymph nodes was achieved in 85% of patients, without procedure-related differences. No differences were observed in OS or DFS between ERC, LC, and SLC.

CONCLUSION

The present study supports the resection of SFCs by colon-sparing surgical techniques, such as SLC.

Thirteen-year experience with hand-assisted laparoscopic surgery in colorectal patients

BACKGROUND

We report outcomes on 324 consecutive cases of hand-assisted laparoscopic surgery (HALS) in colorectal patients over 13 years performed by a single surgeon.

METHODS

A prospectively maintained database was used to identify all patients undergoing HALS colorectal procedures for benign or malignant indications from September 2004 to February 2018, at two major tertiary centres in Sydney, Australia.

RESULTS

Median age was 64 years, 51% were female and median body mass index was 26. Colorectal cancer (55%), diverticular disease (13%) and polyp related conditions (13%) were common indications. Anterior resection (65%) and right hemicolectomy (18%) were most commonly performed. Median operative time was 244 min (190-300) and 75% of Gelport incisions were Pfannenstiel. Sixty-three percent of colorectal cancer patients had a T3 or T4 cancer. Median tumour size was 35 mm (25-45). Seven percent required conversion to open and 4% a re-operation in the early post-operative period. Thirty-six percent had a post-operative complication, and 11% were major complications. Follow-up extended to 12.8 years and there were 33 late deaths. Being in a high dependency unit or intensive care unit was significant for late mortality (odds ratio 2.8, 95% confidence interval 1.06-7.78, P = 0.037). Three percent developed an incisional hernia and 6% had small bowel obstruction at long-term follow-up.

CONCLUSION

HALS is an effective technique for both benign and malignant colorectal indications with the added advantage of tactile feedback and a lower rate of conversion to open.