Incorporating low haemoglobin into a risk prediction model for conversion in minimally invasive gynaecologic oncology surgeries.

BACKGROUND: A well-known complication of laparoscopic management of gynaecologic masses and cancers is the need to perform an intraoperative conversion to laparotomy. The purpose of this study was to identify novel patient risk factors for conversion from minimally invasive to open surgeries for gynaecologic oncology operations. METHODS: This was a retrospective cohort study of 1356 patients ≥18 years of age who underwent surgeries for gynaecologic masses or malignancies between February 2015 and May 2020 at a single academic medical centre. Multivariable logistic regression was used to study the effects of older age, higher body mass index (BMI), higher American Society of Anaesthesiologist (ASA) physical status, and lower preoperative haemoglobin (Hb) on odds of converting from minimally invasive to open surgery. Receiver operating characteristic (ROC) curve analysis assessed the discriminatory ability of a risk prediction model for conversion. RESULTS: A total of 704 planned minimally invasive surgeries were included with an overall conversion rate of 6.1% (43/704). Preoperative Hb was lowest for conversion cases, compared to minimally invasive and open cases (11.6 ± 1.9 vs 12.8 ± 1.5 vs 11.8 ± 1.9 g/dL, p<.001). Patients with preoperative Hb <10 g/dL had an adjusted odds ratio (OR) of 3.94 (CI: 1.65-9.41, p=.002) for conversion while patients with BMI ≥30 kg/m2 had an adjusted OR of 2.86 (CI: 1.50-5.46, p=.001) for conversion. ROC curve analysis using predictive variables of age >50 years, BMI ≥30 kg/m2, ASA physical status >2, and preoperative haemoglobin <10 g/dL resulted in an area under the ROC curve of 0.71. Patients with 2 or more risk factors were at highest risk of requiring an intraoperative conversion (12.0%). CONCLUSIONS: Lower preoperative haemoglobin is a novel risk factor for conversion from minimally invasive to open gynaecologic oncology surgeries and stratifying patients based on conversion risk may be helpful for preoperative planning.

Minimally invasive surgery for management of gynaecologic masses (masses that affect the female reproductive organs) is often preferred over more invasive surgery, because it involves smaller surgical incisions and can have overall better recovery time. However, one unwanted complication of minimally invasive surgery is the need to unexpectedly convert the surgery to an open surgery, which entails a larger incision and is a higher risk procedure. In our study, we aimed to find patient characteristics that are associated with higher risk of converting a minimally invasive surgery to an open surgery. Our study identified that lower levels of preoperative haemoglobin, the protein that carries oxygen within red blood cells, is correlated with higher risk for conversion. This new risk factor was used with other known risk factors, including having higher age, higher body mass index, and higher baseline medical complexity to create a model to help surgical teams identify high risk patients for conversion. This model may be useful for surgical planning before and during the operation to improve patient outcomes.

Propensity-score matched outcomes of resection of stage IV primary colon cancer with and without simultaneous resection of liver metastases.

There is controversy in the best management of colorectal cancer liver metastasis (CLM). This study aimed to compare short-term and survival outcomes of simultaneous resection of CLM and primary colon cancer compared to resection of only colon cancer. This retrospective matched cohort study included patients from the National Cancer Database (2015-2019) with stage IV colon adenocarcinoma and synchronous liver metastases who underwent colectomy. Patients were divided into two groups: colectomy-only (resection of primary colon cancer only) and colectomy-plus (simultaneous resection of primary colon cancer and liver metastases). The groups were matched using the propensity score method. The primary outcome was short-term mortality and readmission. Secondary outcomes were conversion, hospital stay, surgical margins, and overall survival. 4082 (37.6%) of 10,862 patients underwent simultaneous resection of primary colon cancer and liver metastases. After matching, 2038 patients were included in each group. There were no significant differences between the groups in 30-days mortality (3.1% vs 3.8%, p = 0.301), 90-days (6.6% vs 7.7%, p = 0.205) mortality, 30-days unplanned readmission (7.2% vs 5.3%, p = 0.020), or conversion to open surgery (15.5% vs. 13.8%, p = 0.298). Patients in the colectomy plus group had a higher rate of lower incidence of positive surgical margins (13.2% vs. 17.2%, p = 0.001) and longer overall survival (median: 41.5 vs 28.4 months, p < 0.001). Synchronous resection of CLM did not increase the rates of short-term mortality, readmission, conversion from minimally invasive to open surgery, or hospital stay and was associated with a lower incidence of positive surgical margins.

Conversion rate to open surgery during transanal total mesorectal excision (TaTME) for rectal cancer: a single-center experience.

Minimally invasive techniques for rectal cancer have demonstrated considerable advantages in terms of faster recovery and less post-operative complications. However, due to the complex anatomy and a limited surgical field, conversion to open surgery is still sometimes required, with a negative impact on the short-and long-term outcomes. The purpose of this study was to analyse the conversion rate to open abdominal surgery during laparoscopic transanal total mesorectal excision (TaTME) procedures performed at a high-volume Italian referral center. All consecutive TaTME performed for mid-to-low rectal cancer between 2015 and 2023 were reviewed, independently if treated with a primary anastomosis (with/without a diverting ostomy) or an end stoma. All procedures were performed using a standardized approach by the same surgical team. Patients with benign diagnosis that underwent different-from rectal resection procedures and cases pre-operatively scheduled for open surgery were excluded. The primary outcome of interest was the rate of conversion, defined as an un-planned intraoperative switch to open surgery using a midline laparotomy. Secondary aims included the comparison of patients who had a longer vs shorter operative time. Out of 220 patients, 210 were selected. In 187 cases, a primary anastomosis was performed, while 23 patients received a terminal colostomy (1 in the converted group; 22 in the full MIS- TaTME group, 10.6%). A surgical approach modification occurred in two cases, with a conversion rate of 0.95%. Median operative time was 281 min. Reasons for conversions included intra-operative difficulties impairing the mini-invasive procedure without intra-operative complications in one case, and difficulties in the laparoscopic control of an intraoperative bleeding due to a splenic lesion in another patient. Male sex and a higher BMI were found to be statistically significantly associated to longer operative time (respectively: p = 0.001 and p = 0.0025). In a high-volume center, a standardized TaTME is associated to a low conversion rate to open abdominal surgery.

Reasons for conversions in thoracoscopic repairs of neonatal congenital diaphragmatic hernias: a systematic review.

PURPOSE: This systematic review focused on reasons for conversions in neonates undergoing thoracoscopic congenital diaphragmatic hernia (CDH) repair. METHODS: Systematic search of Medline/Pubmed and Embase was performed for English, Spanish and Portuguese reports, according to PRISMA guidelines. RESULTS: Of the 153 articles identified (2003-2023), 28 met the inclusion criteria and offered 698 neonates for analysis. Mean birth weight and gestational age were 3109 g and 38.3 weeks, respectively, and neonates were operated at a mean age of 6.12 days. There were 278 males (61.50%; 278/452) and 174 females (38.50%; 174/452). The reasons for the 137 conversions (19.63%) were: (a) defect size (n = 22), (b) need for patch (n = 21); (c) difficulty in reducing organs (n = 14), (d) ventilation issues (n = 10), (e) bleeding, organ injury, cardiovascular instability (n = 3 each), (f) bowel ischemia and defect position (n = 2 each), hepatopulmonary fusion (n = 1), and (g) reason was not specified for n = 56 neonates (40.8%). The repair was primary in 322 neonates (63.1%; 322/510) and patch was used in 188 neonates (36.86%; 188/510). There were 80 recurrences (12.16%; 80/658) and 14 deaths (2.48%; 14/565). Mean LOS and follow-up were 20.17 days and 19.28 months, respectively. CONCLUSIONS: Neonatal thoracoscopic repair for CDH is associated with conversion in 20% of cases. Based on available data, defect size and patch repairs have been identified as the predominant reasons, followed by technical difficulties to reduce the herniated organs and ventilation related issues. However, data specifically relating to conversion is poorly documented in a high number of reports (40%). Accurate data reporting in future will be important to better estimate and quantify reasons for conversions in neonatal thoracoscopy for CDH.

Robotic beyond total mesorectal excision for locally advanced rectal cancers: Perioperative and oncological outcomes from a multicentre case series.

BACKGROUND: Around 20% of rectal tumors are locally advanced with invasion into adjacent structures at presentation. These may require surgical resections beyond boundaries of total mesorectal excision (bTME) for radicality. Robotic bTME is under investigation. This study reports perioperative and oncological outcomes of robotic bTME for locally advanced rectal cancers. MATERIALS AND METHODS: A multicentre, retrospective analysis of prospectively collected robotic bTME resections (July 2015-November 2020). Demographics, clinicopathological features, short-term outcomes, recurrences, and survival were investigated. RESULTS: One-hundred-sixty-eight patients (eight centres) were included. Median age and BMI were 60.0 (50.0-68.7) years and 24.0 (24.4-27.7) kg/m2. Female sex was prevalent (n = 95, 56.8%). Fifty patients (29.6%) were ASA III-IV. Neoadjuvant chemoradiotherapy was given to 125 (74.4%) patients. Median operative time was 314.0 (260.0-450.0) minutes. Median estimated blood loss was 150.0 (27.5-500.0) ml. Conversion to laparotomy was seen in 4.8%. Postoperative complications occurred in 77 (45.8%) patients; 27.3% and 3.9% were Clavien-Dindo III and IV, respectively. Thirty-day mortality was 1.2% (n = 2). R0 rate was 92.9%. Adjuvant chemotherapy was offered to 72 (42.9%) patients. Median follow-up was 34.0 (10.0-65.7) months. Distant and local recurrences were seen in 35 (20.8%) and 15 patients (8.9%), respectively. Overall survival (OS) at 1, 3, and 5-years was 91.7, 82.1, and 76.8%. Disease-free survival (DFS) at 1, 3, and 5-years was 84.0, 74.5, and 69.2%. CONCLUSION: Robotic bTME is technically safe with relatively low conversion rate, good OS, and acceptable DFS in the hands of experienced surgeons in high volume centres. In selected cases robotic approach allows for high R0 rates during bTME.

Upfront laparotomy versus conversion from minimally invasive surgery to open surgery in colon cancer: Is there a difference in outcomes?

BACKGROUND: It is unclear whether conversion from minimally invasive surgery to laparotomy in patients with colon cancer contributes to worse outcomes compared with those operated by laparotomy. In this study, we aimed to assess the implications of transitioning from minimally invasive surgery to laparotomy in patients with colon cancer compared with patients undergoing upfront laparotomy. METHODS: A retrospective analysis of the National Cancer Database, including patients with stages I to III colon cancer (2010-2019). Patients who underwent either upfront laparotomy (Open Surgery Group) or minimally invasive surgery converted to open surgery (Converted Surgery Group) were included. Groups were balanced using propensity-score matching. Primary outcome was overall survival, and secondary outcomes included 30- and 90-day mortality and 30-day readmission rates. RESULTS: The study included 65,083 operated patients with stage I to III colon cancer; 57,091 patients (87.7%) were included in the Open Surgery group and 7,992 (12.3%) in the Converted Surgery group. 93.5% were converted from laparoscopy, and 6.5% were converted from robotic surgery. After propensity-score matching, 7,058 patients were included in each group. Median overall survival was significantly higher in the Converted Surgery group (107.3 months) than in the Open Surgery group (101.5 months; P = .006). A survival benefit was seen in patients >65 years of age (79.5 vs 71.9 months; P = .001), left-sided disease (129.4 vs 114.5 months; P < .001), and with a high Charlson comorbidity index score (=3; 58.9 vs 42.3 months; P = .03). Positive margin rates were similar between the groups (6.3% vs 5.6%; P = .07). Converted patients had a higher 30-day readmission rate (6.7% vs 5.6%, P = .006) and shorter duration of stay (median, 5 vs 6 days, P < .001) than patients in the Open Surgery group. In addition, 30-day mortality was comparable between the groups (2.9% vs 3.5%; P = .07). CONCLUSION: Conversion to open surgery from minimally invasive surgery was associated with better overall survival compared with upfront open surgery. A survival benefit was mainly seen in patients >65 years of age, with significant comorbidities, and with left-sided tumors. We believe these data suggest that, in the absence of an absolute contraindication to minimally invasive surgery, it should be the preferred approach in patients with colon cancer.

The evidence behind robot-assisted abdominopelvic surgery: a meta-analysis of randomized controlled trials.

BACKGROUND: Despite recent advancements, the advantage of robotic surgery over other traditional modalities still harbors academic inquiries. We seek to take a recently published high-profile narrative systematic review regarding robotic surgery and add meta-analytic tools to identify further benefits of robotic surgery. METHODS: Data from the published systematic review were extracted and meta-analysis were performed. A fixed-effect model was used when heterogeneity was not significant (Chi2 p ≥ 0.05, I2 ≤ 50%) and a random-effects model was used when heterogeneity was significant (Chi2 p < 0.05, I2 > 50%). Forest plots were generated using RevMan 5.3 software. RESULTS: Robotic surgery had comparable overall complications compared to laparoscopic surgery (p = 0.85), which was significantly lower compared to open surgery (odds ratio 0.68, p = 0.005). Compared to laparoscopic surgery, robotic surgery had fewer open conversions (risk difference - 0.0144, p = 0.03), shorter length of stay (mean difference - 0.23 days, p = 0.01), but longer operative time (mean difference 27.98 min, p < 0.00001). Compared to open surgery, robotic surgery had less estimated blood loss (mean difference - 286.8 mL, p = 0.0003) and shorter length of stay (mean difference - 1.69 days, p = 0.001) with longer operative time (mean difference 44.05 min, p = 0.03). For experienced robotic surgeons, there were less overall intraoperative complications (risk difference - 0.02, p = 0.02) and open conversions (risk difference - 0.03, p = 0.04), with equivalent operative duration (mean difference 23.32 min, p = 0.1) compared to more traditional modalities. CONCLUSION: Our study suggests that compared to laparoscopy, robotic surgery may improve hospital length of stay and open conversion rates, with added benefits in experienced robotic surgeons showing lower overall intraoperative complications and comparable operative times.

Robotic Technology in Emergency General Surgery Cases in the Era of Minimally Invasive Surgery.

Importance: Although robotic surgery has become an established approach for a wide range of elective operations, data on its utility and outcomes are limited in the setting of emergency general surgery. Objectives: To describe temporal trends in the use of laparoscopic and robotic approaches and compare outcomes between robotic and laparoscopic surgery for 4 common emergent surgical procedures. Design, Setting, and Participants: A retrospective cohort study of an all-payer discharge database of 829 US facilities was conducted from calendar years 2013 to 2021. Data analysis was performed from July 2022 to November 2023. A total of 1 067 263 emergent or urgent cholecystectomies (n = 793 800), colectomies (n = 89 098), inguinal hernia repairs (n = 65 039), and ventral hernia repairs (n = 119 326) in patients aged 18 years or older were included. Exposure: Surgical approach (robotic, laparoscopic, or open) to emergent or urgent cholecystectomy, colectomy, inguinal hernia repair, or ventral hernia repair. Main Outcomes and Measures: The primary outcome was the temporal trend in use of each operative approach (laparoscopic, robotic, or open). Secondary outcomes included conversion to open surgery and length of stay (both total and postoperative). Temporal trends were measured using linear regression. Propensity score matching was used to compare secondary outcomes between robotic and laparoscopic surgery groups. Results: During the study period, the use of robotic surgery increased significantly year-over-year for all procedures: 0.7% for cholecystectomy, 0.9% for colectomy, 1.9% for inguinal hernia repair, and 1.1% for ventral hernia repair. There was a corresponding decrease in the open surgical approach for all cases. Compared with laparoscopy, robotic surgery was associated with a significantly lower risk of conversion to open surgery: cholecystectomy, 1.7% vs 3.0% (odds ratio [OR], 0.55 [95% CI, 0.49-0.62]); colectomy, 11.2% vs 25.5% (OR, 0.37 [95% CI, 0.32-0.42]); inguinal hernia repair, 2.4% vs 10.7% (OR, 0.21 [95% CI, 0.16-0.26]); and ventral hernia repair, 3.5% vs 10.9% (OR, 0.30 [95% CI, 0.25-0.36]). Robotic surgery was associated with shorter postoperative lengths of stay for colectomy (-0.48 [95% CI, -0.60 to -0.35] days), inguinal hernia repair (-0.20 [95% CI, -0.30 to -0.10] days), and ventral hernia repair (-0.16 [95% CI, -0.26 to -0.06] days). Conclusions and Relevance: While robotic surgery is still not broadly used for emergency general surgery, the findings of this study suggest it is becoming more prevalent and may be associated with better outcomes as measured by reduced conversion to open surgery and decreased length of stay.

Risk Factors of Open Surgery Conversion in Laparoscopic Partial Nephrectomy to Achieve Nephron Sparing.

OBJECTIVES: We aimed to evaluate the risk factors for the conversion from laparoscopic partial nephrectomy (LPN) to open surgery to achieve partial nephrectomy (PN). METHODS: Data from patients who underwent LPN between June 2020 and September 2023 were analyzed retrospectively. Patients in whom the PN procedure could be completed laparoscopically were recorded as the 'Fully Laparoscopic' (FL) group (n = 97), and those converted to open surgery from laparoscopy were recorded as the 'Conversion to Open' (CTO) group (n = 10). The demographic and pathologic variables were compared between groups. Regression analyses were used to define predictor factors, and receiver operating characteristic analysis was used to define the cut-off value of the surgical bleeding volume. RESULTS: Conversion to open surgery was found in 10/107 patients (9.3%). There was no statistical difference between groups in demographic and pathologic variables. Intraoperative blood loss volume, upper pole localized tumor, and posterior localized tumor were found to be statistically higher in the CTO group (p = 0.001, p = 0.001, and p = 0.043, respectively). Furthermore, these factors were only found to be statistically significant predictors of conversion to open surgery in both univariate and multivariate regression analyses. 235 cc was found to be the cut-off value of intraoperative blood loss volume for predicting conversion to open surgery (p = 0.001). CONCLUSION: Using these predictive factors in clinical practice, treatment planning will lead to the possibility of starting the treatment directly with open surgery instead of minimally invasive options, and it may also provide a chance of being prepared for the possibility of conversion to open surgery peroperatively.

Influence of neoadjuvant treatment strategy on perioperative outcomes in locally advanced rectal cancer.

AIM: Neoadjuvant chemoradiotherapy (nCRT) in locally advanced rectal cancer facilitates tumour downstaging and complete pathological response (pCR). The goal of neoadjuvant systemic chemotherapy (total neoadjuvant chemotherapy, TNT) is to further improve local and systemic control. While some patients forgo surgery, total mesorectal excision (TME) remains the standard of care. While TNT appears to be noninferior to nCRT with respect to short-term oncological outcomes few data exist on perioperative outcomes. Perioperative morbidity including anastomotic leaks is associated with a negative effect on oncological outcomes, probably due to a delay in proceeding to adjuvant therapy. Thus, we aimed to compare conversion rates, rates of sphincter-preserving surgery and anastomosis formation rates in patients undergoing rectal resection after either TNT or standard nCRT. METHODS: An institutional colorectal oncology database was searched from January 2018 to July 2023. Inclusion criteria comprised patients with histologically confirmed rectal cancer who had undergone neoadjuvant therapy and TME. Exclusion criteria comprised patients with a noncolorectal primary, those operated on emergently or who had local excision only. Outcomes evaluated included rates of conversion to open, sphincter-preserving surgery, anastomosis formation and anastomotic leak. RESULTS: A total of 119 patients were eligible for inclusion (60 with standard nCRT, 59 with TNT). There were no differences in rates of sphincter preservation or primary anastomosis formation between the groups. However, a significant increase in conversion to open (p = 0.03) and anastomotic leak (p = 0.03) was observed in the TNT cohort. CONCLUSION: In this series TNT appears to be associated with higher rates of conversion to open surgery and higher anastomotic leak rates. While larger studies will be required to confirm these findings, these factors should be considered alongside oncological benefits when selecting treatment strategies.

Impact of the endoscopic surgical skill qualification system on conversion to laparotomy after low anterior resection for rectal cancer in Japan (a secondary analysis of the EnSSURE study).

BACKGROUND AND AIMS: Conversion to laparotomy is among the serious intraoperative complications and carries an increased risk of postoperative complications. In this cohort study, we investigated whether or not the Endoscopic Surgical Skill Qualification System (ESSQS) affects the conversion rate among patients undergoing laparoscopic surgery for rectal cancer. METHODS: We performed a retrospective secondary analysis of data collected from patients undergoing laparoscopic surgery for cStage II and III rectal cancer from 2014 to 2016 across 56 institutions affiliated with the Japan Society of Laparoscopic Colorectal Surgery. Data from the original EnSSURE study were analyzed to investigate risk factors for conversion to laparotomy by performing univariate and multivariate analyses based on the reason for conversion. RESULTS: Data were collected for 3,168 cases, including 65 (2.1%) involving conversion to laparotomy. Indicated conversion accounted for 27 cases (0.9%), while technical conversion accounted for 35 cases (1.1%). The multivariate analysis identified the following independent risk factors for indicated conversion to laparotomy: tumor diameter [mm] (odds ratio [OR] 1.01, 95% confidence interval [CI] 1.01-1.05, p = 0.0002), combined resection of adjacent organs [+/-] (OR 7.92, 95% CI 3.14-19.97, p < 0.0001), and surgical participation of an ESSQS-certified physician [-/+] (OR 4.46, 95% CI 2.01-9.90, p = 0.0002). The multivariate analysis identified the following risk factors for technical conversion to laparotomy: registered case number of institution (OR 0.99, 95% CI 0.99-1.00, p = 0.0029), institution type [non-university/university hospital] (OR 3.52, 95% CI 1.54-8.04, p = 0.0028), combined resection of adjacent organs [+/-] (OR 5.96, 95% CI 2.15-16.53, p = 0.0006), and surgical participation of an ESSQS-certified physician [-/+] (OR 6.26, 95% CI 3.01-13.05, p < 0.0001). CONCLUSIONS: Participation of ESSQS-certified physicians may reduce the risk of both indicated and technical conversion. Referral to specialized institutions, such as high-volume centers and university hospitals, especially for patients exhibiting relevant background risk factors, may reduce the risk of conversion to laparotomy and lead to better outcomes for patients. TRIAL REGISTRATION: This study was registered with the Japanese Clinical Trials Registry as UMIN000040645.

Bailout Surgery for Difficult Gallbladders: Surgical Approach and Outcomes.

INTRODUCTION: Inflammation in acute cholecystitis may cause a cholecystectomy to be more challenging. Due to the difficult dissection, conversion to subtotal cholecystectomy via laparoscopic or open procedure may be required. This is done to reduce the risk of bile duct injury and hemorrhage. We sought to describe the incidence and risk factors, safety, morbidity, and outcomes associated with bailout procedures. METHODS: A single academic center, retrospective review of laparoscopic cholecystectomies that resulted in bailout procedures performed between January 2015 and December 2020. Data collected from the chart review included demographics, comorbidities, length of presenting symptoms, vital signs, laboratory and imaging, intraoperative findings, length of surgery, and outcome. RESULTS: A total of 1892 cholecystectomies were performed with 147 bailout procedures. For bailout 92 (63.4%) were converted to open, with 66% resulting in complete cholecystectomy. Hypertension and diabetes were the most common comorbidities. The median duration of symptoms was 4 days. Difficult anatomy in the hepatocystic triangle (66%) and dense adhesions (31%) were the most common reasons for bailout. The mean duration of surgery was 145.76 (SD 102.94) minutes. There were 2 bile duct injuries, both in open total cholecystectomy subgroup. Bile leak occurred in 23.8% with majority in subtotal cholecystectomy group. There was no difference in hospital length of stay, surgical site infection, or mortality among different bailout procedures. CONCLUSIONS: Subtotal cholecystectomy represents a safe alternative to total cholecystectomy during challenging cases to avoid damaging surrounding structures. The choice of laparoscopic or open subtotal approach is dependent on the surgeons' expertise.

ROBOtic Care Outcomes Project for acute gallbladder pathology.

BACKGROUND: Robotic cholecystectomy is being increasingly used for patients with acute gallbladder disease who present to the emergency department, but clinical evidence is limited. We aimed to compare the outcomes of emergent laparoscopic and robotic cholecystectomies in a large real-world database. METHODS: Patients who received emergent laparoscopic or robotic cholecystectomies from 2020 to 2022 were identified from the Intuitive Custom Hospital Analytics database, based on deidentified extraction of electronic health record data from US hospitals. Conversion to open or subtotal cholecystectomy and complications were defined using ICD10 and/or CPT codes. Multivariate logistic regression with inverse probability treatment weighting (IPTW) was performed to compare clinical outcomes of laparoscopic versus robotic approach after balancing covariates. Cost analysis was performed with activity-based costing and adjustment for inflation. RESULTS: Of 26,786 laparoscopic and 3,151 robotic emergent cholecystectomy patients being included, 64% were female, 60% were ≥45 years, and 24% were obese. Approximately 5.5% patients presented with pancreatitis, and 4% each presenting with sepsis and biliary obstruction. After IPTW, distributions of all baseline covariates were balanced. Robotic cholecystectomy decreased odds of conversion to open (odds ratio, 0.68; 95% confidence interval, 0.49-0.93; p = 0.035), but increased odds of subtotal cholecystectomy (odds ratio, 1.64; 95% confidence interval, 1.03-2.60; p = 0.037). Surgical site infection, readmission, length of stay, hospital acquired conditions, bile duct injury or leak, and hospital mortality were similar in both groups. There was no significant difference in hospital cost. CONCLUSION: Robotic cholecystectomy has reduced odds of conversion to open and comparable complications, but increased odds of subtotal cholecystectomy compared with laparoscopic cholecystectomy for acute gallbladder diseases. Further work is required to assess the long-term implications of these differences. LEVEL OF EVIDENCE: Therapeutic/Care Management; Level IV.

Robotic vs. Laparoscopic Splenectomy in Management of Non-traumatic Splenic Pathologies: A Systematic Review and Meta-Analysis.

We aimed to evaluate comparative outcomes of robotic and laparoscopic splenectomy in patients with non-traumatic splenic pathologies. A systematic search of electronic databases and bibliographic reference lists were conducted, and a combination of free text and controlled vocabulary search adapted to thesaurus headings, search operators and limits in electronic databases were applied. Intraoperative and post-operative complications, wound infection, haematoma, conversion to open procedure, return to theatre, volume of blood loss, procedure time and length of hospital stay were the evaluated outcome parameters. We identified 8 comparative studies reporting a total of 560 patients comparing outcomes of robotic (n = 202) and laparoscopic (n = 258) splenectomies. The robotic approach was associated with significantly lower volume of blood loss (MD: -82.53 mls, 95% CI -161.91 to -3.16, P = .04) than the laparoscopic approach. There was no significant difference in intraoperative complications (OR: 0.68, 95% CI .21-2.01, P = .51), post-operative complications (OR: .91, 95% CI .40-2.06, P = .82), wound infection (RD: -.01, 95% CI -.04-.03, P = .78), haematoma (OR: 0.40, 95% CI .04-4.03, P = .44), conversion to open (OR: 0.63; 95% CI, .24-1.70, P = .36), return to theatre (RD: -.04, 95% CI -.09-.02, P = .16), procedure time (MD: 3.63; 95% CI -16.99-24.25, P = .73) and length of hospital stay (MD: -.21; 95% CI -1.17 - .75, P = .67) between 2 groups. In conclusion, robotic and laparoscopic splenectomies seem to have comparable perioperative outcomes with similar rate of conversion to an open procedure, procedure time and length of hospital stay. The former may potentially reduce the volume of intraoperative blood loss. Future higher level research is required to evaluate the cost-effectiveness and clinical outcomes.

Portal Vein Thrombosis Following Splenectomy in Children: Is There a Higher Rate When Using Single-Incision Laparoscopy?

BACKGROUND: Portal vein thrombosis can be a life-threatening complication associated with a splenectomy. Laparoscopic splenectomy has been suggested to cause an increased rate of portal vein thrombosis. Our study evaluated the rate of portal vein thrombosis in pediatric patients who underwent a splenectomy via single-site laparoscopy. METHODS: A retrospective chart review was performed for all patients undergoing laparoscopic splenectomy from November 2012 to July 2019. Demographic data, operative details, postoperative imaging, and patient outcomes were obtained for analysis. Patients were contacted to determine if they had any complications for which they sought medical care elsewhere. RESULTS: There were 78 pediatric patients who underwent laparoscopic splenectomy over the 7-year period. The most common indication was sickle cell disease (70.5%). Single-incision laparoscopy was performed in 61.5% of the cases. Eight were converted to open. Eleven patients (14.1%) had a laparoscopic cholecystectomy performed during the same operation. The overall complication rate was 8.9%. A quarter of our patients had imaging within 1 year of surgery; no portal vein thrombosis was identified. In addition, over half of the patients were recontacted for follow-up questioning. None of the patients surveyed sought medical care elsewhere for a surgery-related complication or sequela of a portal vein thrombus. DISCUSSION: Single-incision laparoscopic splenectomy is a safe approach in children. Using the single-site platform allows the flexibility to perform additional operations, such as cholecystectomy, without the placement of additional ports. This analysis shows that patients undergoing single-incision laparoscopic splenectomy do not have a higher rate for portal vein thrombosis.

Endovascular aneurysm repair conversion is an increasingly common indication for open abdominal aortic aneurysm repair.

OBJECTIVE: Although endovascular aneurysm repair (EVAR) reintervention is common, conversion to open repair (EVAR-c) occurs less frequently but can be associated with significant technical complexity and perioperative risk. There is a paucity of data highlighting the evolution of periprocedural results surrounding EVAR-c and change in practice patterns, especially for referral centers that increasingly manage EVAR failures. The purpose of this analysis was to perform a temporal analysis of our EVAR-c experience and describe changes in patient selection, operative details, and outcomes. METHODS: A retrospective single-center review of all open abdominal aortic aneurysm repairs was performed (2002-2019), and EVAR-c procedures were subsequently analyzed. EVAR-c patients (n = 184) were categorized into two different eras (2002-2009, n = 21; 2010-2019, n = 163) for comparison. Logistic regression and Cox proportional hazards modeling were used for risk-adjusted comparisons. RESULTS: A significant increase in EVAR-c as an indication for any type of open aneurysm repair was detected (9% to 27%; P < .001). Among EVAR-c patients, no change in age or individual comorbidities was evident (mean age, 71 ± 9 years); however, the proportion of female patients (P = .01) and American Society of Anesthesiologists classification >3 declined (P = .05). There was no difference in prevalence (50% vs 43%; P = .6) or number (median, 1.5 [interquartile range (IQR), 0-5]) of preadmission EVAR reinterventions; however, time to reintervention decreased (median, 23 [IQR, 6-34] months vs 0 [IQR, 0-22] months; P = .005). In contrast, time to EVAR-c significantly increased (median, 16 [IQR, 9-39] months vs 48 [IQR, 20-83] months; P = .008). No difference in frequency of nonelective presentation (mean, 52%; P = .9] or indication was identified, but a trend toward increasing mycotic EVAR-c was observed (5% vs 15%; P = .09). Use of retroperitoneal exposure (14% vs 77%; P < .0001), suprarenal cross-clamp application (6286%; P = .04), and visceral-ischemia time (median, 0 [IQR, 0-11] minutes vs 5 [IQR, 0-20] minutes; P = .05) all increased. In contrast, estimated blood loss (P trend = .03) and procedure time (P = .008) decreased. The unadjusted elective 30-day mortality rate improved but did not reach statistical significance (elective, 10% vs 5%; P = .5) with no change for non-elective operations (18% vs 16%; P = .9). However, a significantly decreased risk of complications was evident (odds ratio, 0.88; 95% confidence interval, .8-.9; P = .01). One- and 3-year survival was similar over time. CONCLUSIONS: EVAR-c is now a common indication for open abdominal aortic aneurysm repair. Patients frequently present nonelectively and at increasingly later intervals after their index EVAR. Despite increasing technical complexity, decreased complication risk and comparable survival can be anticipated when patients are managed at a high-volume aortic referral center.

Early and midterm outcomes following open surgical conversion after failed endovascular aneurysm repair from the "Italian North-easT RegIstry of surgical Conversion AfTer Evar" (INTRICATE).

OBJECTIVE: To report the early and mid-term outcomes following open surgical conversion (OSC) after failed endovascular aortic repair (EVAR) using data from a multicentric registry. METHODS: A retrospective study was carried out on consecutive patients undergoing OSC after failed EVAR at eight tertiary vascular units from the same geographic area in the North-East of Italy, from April 2005 to November 2019. Study endpoints included early and follow-up outcomes. RESULTS: A total of 144 consecutive patients were included in the study. Endoleaks were the most common indication for OSC (50.7%), with endograft infection (24.6%) and occlusion (21.9%) being the second most prevalent causes. The overall rate of 30-day all-cause mortality was 13.9% (n = 20); 32 patients (22.2%) experienced at least one major complication. Mean length of stay was 13 ± 12.7 days. On multivariate logistic regression, age (odds ratio [OR], 1.09; 95% confidence interval [CI], 1.01-1-19; P = .02), renal clamping time (OR, 1.07; 95% CI, 1.02-1.13; P = .01), and suprarenal/celiac clamping (OR, 6.66; 95% CI, 1.81-27.1; P = .005) were identified as independent predictors of perioperative major complications. Age was the only factor associated with perioperative mortality at 30 days. Renal clamping time >25 minutes had sensitivity of 65% and specificity of 70% in predicting the occurring of major adverse events (area under the curve, 0.72; 95% CI, 0.61-0.82). At 5 years, estimated survival was significantly lower for patients treated due to aortic rupture/dissection (28%; 95% CI, 13%-61%), compared with patients in whom the indication for treatment was endoleak (54%; 95% CI, 40%-73%), infection (53%; 95% CI, 30%-94%), or thrombosis (82%; 95% CI, 62%-100%; P = .0019). Five-year survival rates were significantly lower in patients who received emergent treatment (28%; 95% CI, 14%-55%) as compared with those who were treated in an urgent (67%; 95% CI, 48%-93%) or elective setting (57%; 95% CI, 43%-76%; P = .00026). Subjects who received suprarenal/celiac (54%; 95% CI, 36%-82%) or suprarenal (46%; 95% CI, 34%-62%) aortic cross-clamping had lower survival rates at 5 years than those whose aortic-cross clamp site was infrarenal (76%; 95% CI, 59%-97%; P = .041). Using multivariate Cox proportional hazard, older age and emergency setting were independently associated with higher risk for overall 5-year mortality. CONCLUSIONS: OSC after failed EVAR was associated with relatively high rates of early morbidity and mortality, particularly for emergency setting surgery. Endoleaks with secondary sac expansion were the main indication for OSC, and suprarenal aortic cross-clamping was frequently required. Endograft infection and emergent treatment remained associated with poorer short- and long-term survival.

International multicentre propensity score-matched analysis comparing robotic versus laparoscopic right posterior sectionectomy.

BACKGROUND: Minimally invasive right posterior sectionectomy (RPS) is a technically challenging procedure. This study was designed to determine outcomes following robotic RPS (R-RPS) and laparoscopic RPS (L-RPS). METHODS: An international multicentre retrospective analysis of patients undergoing R-RPS versus those who had purely L-RPS at 21 centres from 2010 to 2019 was performed. Patient demographics, perioperative parameters, and postoperative outcomes were analysed retrospectively from a central database. Propensity score matching (PSM) was performed, with analysis of 1 : 2 and 1 : 1 matched cohorts. RESULTS: Three-hundred and forty patients, including 96 who underwent R-RPS and 244 who had L-RPS, met the study criteria and were included. The median operating time was 295 minutes and there were 25 (7.4 per cent) open conversions. Ninety-seven (28.5 per cent) patients had cirrhosis and 56 (16.5 per cent) patients required blood transfusion. Overall postoperative morbidity rate was 22.1 per cent and major morbidity rate was 6.8 per cent. The median postoperative stay was 6 days. After 1 : 1 matching of 88 R-RPS and L-RPS patients, median (i.q.r.) blood loss (200 (100-400) versus 450 (200-900) ml, respectively; P < 0.001), major blood loss (> 500 ml; P = 0.001), need for intraoperative blood transfusion (10.2 versus 23.9 per cent, respectively; P = 0.014), and open conversion rate (2.3 versus 11.4 per cent, respectively; P = 0.016) were lower in the R-RPS group. Similar results were found in the 1 : 2 matched groups (66 R-RPS versus 132 L-RPS patients). CONCLUSION: R-RPS and L-RPS can be performed in expert centres with good outcomes in well selected patients. R-RPS was associated with reduced blood loss and lower open conversion rates than L-RPS.

The Early (2009-2017) Experience With Robot-assisted Cholecystectomy in New York State.

OBJECTIVE: The aim of this study was to examine real-life patterns of care and patient outcomes associated with robot-assisted cholecystectomy (RAC) in New York State (NYS). BACKGROUND: Although robotic assistance may offer some technological advantages, RACs are associated with higher procedural costs and longer operating times compared to traditional laparoscopic cholecystectomies (LCs). Evidence on long-term patient outcomes after RAC from large population-based datasets remains limited and inconsistent. METHODS: Using NYS inpatient and ambulatory surgery data from the Statewide Planning and Research Cooperative System (2009-2017), we conducted bivariate and multivariate analyses to examine patterns of utilization, complications, and secondary procedures following cholecystectomies. RESULTS: Among 299,306 minimally invasive cholecystectomies performed in NYS between 2009 and 2017, one thousand one hundred eighteen (0.4%) were robot-assisted. Compared to those undergoing LC, RAC patients were older, travelled further for surgery, and were more likely to have public insurance and preoperative comorbidities. RAC versus LC patients were more significantly likely to have conversions to open procedure (4.9% vs 2.8%), bile duct injuries (1.3% vs 0.4%), and major reconstructive interventions (0.6% vs 0.1%), longer median length of stay (3 vs 1 day), readmissions (7.3% vs 4.4%), and higher 12-month post-index surgery hospital charges (P < 0.01 for all estimates). Other postoperative complications decreased over time for LC but remained unchanged for RAC patients. CONCLUSIONS: Patients receiving RAC in NYS experienced higher rates of complications compared to LC patients. Addressing patient-, surgeon-, and system-level factors associated with intra/postoperative complications and applying recently promulgated safe cholecystectomy strategies coupled with advanced imaging modalities like fluorescence cholangiography to RAC may improve patient outcomes.