Difference In Anastomotic Leak Rate Research Articles

FP7.13 - Is There A Difference In Anastomotic Leak Rates Requiring Re-Operation Following Emergency Right Hemicolectomy Between Colorectal And Non-Colorectal Surgeons?

Abstract Aim Right sided colonic cancers can often obstruct and present as an emergency. The decision to perform an anastomosis following the right hemicolectomy resection is often multifactorial. This study explores whether there are differences in leak rates between colorectal and non-colorectal surgeons in the context of emergency right hemicolectomy operations performed for malignancy. Methods A retrospective study was conducted at a 3-site Trust in South-East England between 2017 and 2022. Theatre and Infoflex Cancer records were used to obtain patients who had undergone an open right hemicolectomy for malignancy and their operating surgeon. Discharge summaries and clinic letters were then used to ascertain return to theatre for an anastomotic leak. Results There were 281 patients who had undergone an emergency right hemicolectomy in this time interval. There was a 152:129 female:male ratio. 17 out of 37 patients had an anastomosis undertaken by an Upper Gastrointestinal Surgeon. 2 out of the 17 (12%) had an anastomotic leak. 129 out of 244 had an anastomosis undertaken by a Colorectal Surgeon. 17 of the 129 (13%) had an anastomotic leak. There was no significant difference between the leak rates between colorectal and non-colorectal surgeons (p=0.888). Conclusion The study shows that there is no statistical difference in right hemicolectomy anastomotic leak rates between colorectal and non-colorectal surgeons in the emergency setting.

Robotic-Assisted and Laparoscopic Bariatric Surgeries Still Have Clinically Comparable Outcomes

PurposeBariatric surgery is considered the main treatment option for patients with severe obesity. The objective of our study is to compare intra- and postoperative outcomes between the robotic and laparoscopic approaches within the sleeve gastrectomy (SG), duodenal switch (DS), and Roux-en-Y gastric bypass (RYGB).Materials and MethodsThe data from the MBSAQIP were collected for patients who underwent SG, DS, and RYGB between 2015 and 2021. The postoperative and procedural outcomes including 30-day morbidity and mortality as well as operation length were analyzed using regression models.ResultsOur analysis included 1,178,886 surgeries with SG comprising the majority (70%) followed by RYGB (28%) and DS (1%). Other than a higher adjusted risk of unplanned reoperation for robotic RYGB (relative risk (RR) 1.07) and a statistically significant higher rate of postoperative wound disruption in robotic SG for robotic surgery (RR 1.56), there were no statistically significant between-approach differences including infection, wound disruption, death, or reoperation for DS, RYGB, or SG. Our data showed no significant difference in anastomotic leak rate between laparoscopic and robotic approaches in either the DS (p = 0.521) or RYGB (p = 0.800) procedures. Across our study period, the median operation lengths decreased significantly per year for both the robotic SG and DS.ConclusionsRobotic and laparoscopic bariatric surgical procedures have statistically similar 30-day patient outcomes. Robotic bariatric procedures do have significantly longer median operative times than laparoscopic procedures. The decision to use a robotic approach or laparoscopic approach should be made based upon surgeon experience and possibly cost.Graphical

Clinical Utility of Laser Speckle Contrast Imaging and Real-Time Quantification of Bowel Perfusion in Minimally Invasive Left-Sided Colorectal Resections.

Left-sided colorectal surgery demonstrates high anastomotic leak rates, with tissue ischemia thought to influence outcomes. Indocyanine green is commonly used for perfusion assessment, but evidence remains mixed for whether it reduces colorectal anastomotic leaks. Laser speckle contrast imaging provides dye-free perfusion assessment in real-time through perfusion heat maps and quantification. This study investigates the efficacy of advanced visualization (indocyanine green versus laser speckle contrast imaging), perfusion assessment, and utility of laser speckle perfusion quantification in determining ischemic margins. Prospective intervention group using advanced visualization with case-matched, retrospective control group. Single academic medical center. Forty adult patients undergoing elective, minimally invasive, left-sided colorectal surgery. Intraoperative perfusion assessment using white light imaging and advanced visualization at 3 time points: T1-proximal colon after devascularization, before transection, T2-proximal/distal colon before anastomosis, and T3-completed anastomosis. Intraoperative indication of ischemic line of demarcation before resection under each visualization method, surgical decision change using advanced visualization, post hoc laser speckle perfusion quantification of colorectal tissue, and 30-day postoperative outcomes. Advanced visualization changed surgical decision-making in 17.5% of cases. For cases in which surgeons changed a decision, the average discordance between the line of demarcation in white light imaging and advanced visualization was 3.7 cm, compared to 0.41 cm ( p = 0.01) for cases without decision changes. There was no statistical difference between the line of ischemic demarcation using laser speckle versus indocyanine green ( p = 0.16). Laser speckle quantified lower perfusion values for tissues beyond the line of ischemic demarcation while suggesting an additional 1 cm of perfused tissue beyond this line. One (2.5%) anastomotic leak occurred in the intervention group. This study was not powered to detect differences in anastomotic leak rates. Advanced visualization using laser speckle and indocyanine green provides valuable perfusion information that impacts surgical decision-making in minimally invasive left-sided colorectal surgeries. See Video Abstract . ANTECEDENTES:La cirugía colorrectal del lado izquierdo demuestra altas tasas de fuga anastomótica, y se cree que la isquemia tisular influye en los resultados. El verde de indocianina se utiliza habitualmente para evaluar la perfusión, pero la evidencia sobre si reduce las fugas anastomóticas colorrectales sigue siendo contradictoria. Las imágenes de contraste moteado con láser proporcionan una evaluación de la perfusión sin colorantes en tiempo real a través de mapas de calor de perfusión y cuantificación.OBJETIVO:Este estudio investiga la eficacia de la evaluación de la perfusión mediante visualización avanzada (verde de indocianina versus imágenes de contraste moteado con láser) y la utilidad de la cuantificación de la perfusión con moteado láser para determinar los márgenes isquémicos.DISEÑO:Grupo de intervención prospectivo que utiliza visualización avanzada con un grupo de control retrospectivo de casos emparejados.LUGARES:Centro médico académico único.PACIENTES:Cuarenta pacientes adultos sometidos a cirugía colorrectal electiva, mínimamente invasiva, del lado izquierdo.INTERVENCIONES:Evaluación de la perfusión intraoperatoria mediante imágenes con luz blanca y visualización avanzada en tres puntos temporales: T1-colon proximal después de la devascularización, antes de la transección; T2-colon proximal/distal antes de la anastomosis; y T3-anastomosis completa.PRINCIPALES MEDIDAS DE VALORACIÓN:Indicación intraoperatoria de la línea de demarcación isquémica antes de la resección bajo cada método de visualización, cambio de decisión quirúrgica mediante visualización avanzada, cuantificación post-hoc de la perfusión con láser moteado del tejido colorrectal y resultados posoperatorios a los 30 días.RESULTADOS:La visualización avanzada cambió la toma de decisiones quirúrgicas en el 17,5% de los casos. Para los casos en los que los cirujanos cambiaron una decisión, la discordancia promedio entre la línea de demarcación en las imágenes con luz blanca y la visualización avanzada fue de 3,7 cm, en comparación con 0,41 cm (p = 0,01) para los casos sin cambios de decisión. No hubo diferencias estadísticas entre la línea de demarcación isquémica utilizando láser moteado versus verde de indocianina (p = 0,16). El moteado con láser cuantificó valores de perfusión más bajos para los tejidos más allá de la línea de demarcación isquémica y al mismo tiempo sugirió 1 cm adicional de tejido perfundido más allá de esta línea. Se produjo una fuga anastomótica (2,5%) en el grupo de intervención.LIMITACIONES:Este estudio no tuvo el poder estadístico suficiente para detectar diferencias en las tasas de fuga anastomótica.CONCLUSIONES:La visualización avanzada utilizando moteado láser y verde de indocianina proporciona información valiosa sobre la perfusión que impacta la toma de decisiones quirúrgicas en cirugías colorrectales mínimamente invasivas del lado izquierdo. (Traducción-Dr. Ingrid Melo).

Routine placement of abdominal drainage in pouch surgery does not impact on surgical outcomes.

The evidence does not support the routine use of abdominal drainage (AD) in colorectal surgery. However, there is no data on the usefulness of AD, specifically, after ileal pouch-anal anastomosis (IPAA). The aim of this study is to assess post-operative outcomes of patients undergoing IPAA with or without AD at a high volume referral center. A retrospective analysis of prospectively collected data of consecutive patients undergoing IPAA with AD (AD group) or without AD (NAD group) was performed. Baseline characteristics, operative, and postoperative data were analyzed and compared between the two groups. A total of 97 patients were included in the analysis, 46 were in AD group and 51 in NAD group. AD group had a higher BMI (23.9 ± 3.9kg/m2 vs 21.9 ± 3.0kg/m2; p = 0.007) and more commonly underwent two-stage proctocolectomy with IPAA compared to the NAD group (50.0% vs 3.9%; p < 0.001). There was no difference in anastomotic leak rate (6.5% AD vs 5.9% NAD group; p = 1.000), major post-operative complication (8.6% vs 7.9%; p = 0.893); median length of stay [IQR] (5 [5-7] days vs 5 [4-7] days; p = 0.305) and readmission < 90days (8.7% vs 3.9%; p = 0.418). The use of AD does not impact on surgical outcome after IPAA and question the actual benefit of its routine placement.

Stem Cell Therapies for Gastrointestinal Anastomotic Healing: A Systematic Review and Meta-Analysis on Results from Animal Studies

Background: Despite considerable progress in surgical techniques, anastomotic leak (AL) is a common complication after gastrointestinal surgery. Stem cells are a promising therapy to improve healing and have been used in gastrointestinal anastomoses. In this study, we perform a systematic review and meta-analysis to evaluate the efficacy of stem cell therapies in preventing ALs among animal studies. Methods: A systematic review of the literature was performed by searching PubMed, Web of Science, and the Cochrane Library. We considered all anastomoses of the gastrointestinal tract (excl. biliary) from the esophagus to the rectum. Outcomes included AL rates on postoperative day (POD) 7 and the latest time point reported. Results: Fourteen studies were identified, evaluating stem cells in gastrointestinal anastomoses, of which 1 was on esophageal, 2 on gastric, 2 on small intestinal, and 9 on colorectal anastomoses. Meta-analysis did not show significant differences in AL rates on POD 7 (odds ratio [OR] 0.34, 95% confidence interval [CI]: 0.04–3.15, p = 0.248, I2 = 34.1%, 95% CI: 0–75.2%, Q = 6.07, df = 4, p = 0.194), but there was a nonsignificant trend for lower AL rates at the latest time point reported (OR 0.28, 95% CI: 0.08–1.01, p = 0.052, I2 = 34%, 95% CI: 0–70.8%, Q = 10.6, df = 7, p = 0.157). Conclusion: Stem cell therapy may be associated with lower AL rates in gastrointestinal anastomoses, though meta-analysis is severely inhibited by heterogeneous study design. More studies are needed to determine the therapeutic potential of stem cells.

Comparison of robotic vs laparoscopic left-sided colorectal cancer resections

Robotic assisted surgery(RAS) has become increasingly adopted in colorectal cancer surgery. This studyaims to compare robotic and laparoscopic approaches to left sided colorectalresections in terms of surgical outcomeswith noformal enhanced recovery programme. All patients undergoing robotic orlaparoscopic left sided or rectal (high and low anterior resection) cancer surgeryat a single tertiary referral centre over 3 years were included.A total of 184 consecutive patients from July 2017 to December 2020 were included in this study, with 40.2%(n=74/184) undergoing RAS. The median age at time of surgery was 68 years (IQR60-73 years). RAS had a significantly shorter length of median stay of 3 days,compared to 5 days in the conventional laparoscopic surgery (CLS) group(p<0.001). RAS had a significantly lower rate of conversion to open surgery(0% vs 16.4%, p<0.001). The median operative time was also shorter in RAS(308 minutes), compared to CLS (326 minutes, p=0.019). The overall rate of anycomplication was 16.8%, with the RAS experiencing a lower complication rate(12.2% vs 20.0%, p=0.041). There was no significant difference in anastomoticleak rates between the two groups (4.0% vs 5.5%, p=0.673), or in terms of completeresection (R0) (robotic 98.6%, laparoscopic 100%, p=0.095). Robotic left sidedcolorectal surgery delivers equivalent oncological resection compared tolaparoscopic approaches, with the added benefits of reduced length of stay andlower rates of conversion to open surgery. This has both clinical andhealthcare economic benefits.

EP.TU.1069Improved Perioperative and Survival Outcomes for Minimally Invasive Rectal Surgery

Abstract Aim Although laparoscopic colon cancer surgery has been widely embraced as current evidence demonstrates comparable oncological results with open surgery, similar evidence is lacking for laparoscopic rectal cancer surgery. We present the outcomes of patients undergoing laparoscopic and open total mesorectal excision (TME) for rectal cancer in our unit. Methods We retrospectively analysed data collected for patients who underwent laparoscopic and open TME from January 2014 to December 2018. Sociodemographic, perioperative, circumferential resection margin (CRM) positivity, locoregional recurrence and survival data were analysed. Results 260 (144 laparoscopic and 116 open) were included. Median age in the laparoscopic group was 69 years and in the open group 68 years. Neoadjuvant therapy was given in 21 patients (14.6%) in laparoscopic and 13 (11.2%) in the open group (p = 0.42). CRM was positive in 16 cases (11.1%) laparoscopic and 32 (27.6%) open (p = 0.0007;95%CI:6.9-26.2). No statistically significant difference in anastomotic leak rate was observed both groups (4.9% laparoscopic vs 4.3% open;p=0.82). Surgical site infection was significantly more in open cases (13% vs 5.6% laparoscopic,p=0.04). Similar locoregional recurrence rates were observed in both groups (18% laparoscopic vs 19% open,p=0.84). Median follow up was 34 months or more allowed for Disease-free (DFS) and overall survival (OS) to be analysed for 144 of 260 patients. DFS and OS were better in laparoscopic (73% and 94%) compared to open (68% and 85% respectively) (p = 0.40 and p = 0.015 respectively). Conclusion From an oncological perspective, laparoscopic surgery for rectal cancer is safe with additional perioperative and survival benefits compared to open surgery.

Penetrating Colon Trauma-the Effect of Injury Location on Outcomes.

There is limited evidence to suggest that the more distal a penetrating colonic injury, the poorer its expected outcome, prompting consideration of diversion rather than anastomosis when faced with left colonic injury. The clinical outcomes of penetrating colonic trauma in relation to their anatomical location within the colon were reviewed. A review was performed over eight years (2012-2020) of all patients over 18years who had sustained penetrating colon injury and presented to our trauma centre in South Africa. Direct comparison was made between right colon vs left colon injuries. A total of 450 patients were included; right colon: 260, left colon: 190. Gunshots predominated in the right colon, and the PATI was higher in this group. There were minimal differences in admission physiology and blood gas parameters between groups, but higher damage control surgery and ICU admission rates for the right colon group. There were similar rates of primary repair, anastomosis, and stoma between groups. Leak rates were no different between the two groups, and although overall complication rates were higher for the right colon, there was no difference with regard to gastro-intestinal and other complications, nor for mortality. While regression analysis did identify PATI to be a risk factor for overall complications and mortality, it failed to do so for anastomotic leak. Our study did not demonstrate any difference in anastomotic leak rates or mortality between right vs left colonic injury. We recommend that all colonic injuries should be treated on their own merit, balanced against the patient's condition, regardless of anatomical location within the colon.

Anastomotic leak following interval debulking surgery with or without hyperthermic intraperitoneal chemotherapy in women with advanced epithelial ovarian Cancer

Objective(s)To evaluate the incidence and associated risk factors for anastomotic failure following interval debulking surgery (IDS) with or without hyperthermic intraperitoneal chemotherapy (HIPEC) in women with advanced ovarian cancer. MethodsWe performed a retrospective cohort study in women with stage III/IV high-grade ovarian cancer treated with neoadjuvant chemotherapy followed by IDS with colorectal resection and HIPEC from 2017 to 2020. These patients were compared to a historical control cohort who underwent IDS with colorectal resection without HIPEC from 2009 to 2016. Data was collected for demographics, surgical variables, and perioperative outcomes. The univariate analysis compared progression-free survival and overall survival. Results61 women were identified; 21 (34.4%) underwent IDS with HIPEC from 2017 to 2020, and 40 underwent IDS alone from 2009 to 2016. None of the patients who had IDS with HIPEC had protective ileostomy, compared to 10.0% of those who received had IDS alone (n = 4)(p = 0.29). The cumulative incidence of anastomotic leak rate was 8.2% (n = 5). There was no significant difference in anastomotic leak rate for women who underwent IDS with HIPEC (9.5%, n = 2) versus without HIPEC (7.5%, n = 3) (p = 0.99). While there was no difference in PFS (12.2 vs. 13.3 months, log-rank p = 0.31), OS (9.4 vs. 40.6 months, log-rank p = 0.013) was significantly decreased following postoperative anastomotic leak. ConclusionsIn this retrospective series of women with advanced ovarian cancer, HIPEC was not associated with increased risk for anastomotic leak at the time of IDS with colorectal resection and reanastomosis. While further study is needed, HIPEC alone should not preclude colorectal resection or dictate practices for colonic diversion in IDS.

Perfusion Assessment in Left-Sided/Low Anterior Resection (PILLAR III): A Randomized, Controlled, Parallel, Multicenter Study Assessing Perfusion Outcomes With PINPOINT Near-Infrared Fluorescence Imaging in Low Anterior Resection.

Indocyanine green fluoroscopy has been shown to improve anastomotic leak rates in early phase trials. We hypothesized that the use of fluoroscopy to ensure anastomotic perfusion may decrease anastomotic leak after low anterior resection. We performed a 1:1 randomized controlled parallel study. Recruitment of 450 to 1000 patients was planned over 2 years. This was a multicenter trial. Included patients were those undergoing resection defined as anastomosis within 10 cm of the anal verge. Patients underwent standard evaluation of tissue perfusion versus standard in conjunction with perfusion evaluation using indocyanine green fluoroscopy. Primary outcome was anastomotic leak, with secondary outcomes of perfusion assessment and the rate of postoperative abscess requiring intervention. This study was concluded early because of decreasing accrual rates. A total of 25 centers recruited 347 patients, of whom 178 were randomly assigned to perfusion and 169 to standard. The groups had comparable tumor-specific and patient-specific demographics. Neoadjuvant chemoradiation was performed in 63.5% of perfusion and 65.7% of standard (p > 0.05). Mean level of anastomosis was 5.2 ± 3.1 cm in perfusion compared with 5.2 ± 3.3 cm in standard (p > 0.05). Sufficient visualization of perfusion was reported in 95.4% of patients in the perfusion group. Postoperative abscess requiring surgical management was reported in 5.7% of perfusion and 4.2% of standard (p = 0.75). Anastomotic leak was reported in 9.0% of perfusion compared with 9.6% of standard (p = 0.37). On multivariate regression analysis, there was no difference in anastomotic leak rates between perfusion and standard (OR = 0.845 (95% CI, 0.375-1.905); p = 0.34). The predetermined sample size to adequately reduce the risk of type II error was not achieved. Successful visualization of perfusion can be achieved with indocyanine green fluoroscopy. However, no difference in anastomotic leak rates was observed between patients who underwent perfusion assessment versus standard surgical technique. In experienced hands, the addition of routine indocyanine green fluoroscopy to standard practice adds no evident clinical benefit. See Video Abstract at http://links.lww.com/DCR/B560. ANTECEDENTES:Se ha demostrado que la fluoroscopia con verde de indocianina mejora las tasas de fuga anastomótica en ensayos en fases iniciales.OBJETIVO:Nuestra hipótesis es que la utilización de fluoroscopia para asegurar la irrigación anastomótica puede disminuir la fuga anastomótica luego de una resección anterior baja.DISEÑO:Realizamos un estudio paralelo, controlado, aleatorizado 1:1. Se planificó el reclutamiento de 450-1000 pacientes durante 2 años.AMBITO:Multicéntrico.PACIENTES:Pacientes sometidos a resección definida como una anastomosis dentro de los 10cm del margen anal.INTERVENCIÓN:Pacientes que se sometieron a la evaluación estándar de la irrigación tisular contra la estándar en conjunto con la valoración de la irrigación mediante fluoroscopia con verde indocianina.PRINCIPALES VARIABLES EVALUADAS:El principal resultado fue la fuga anastomótica, y los resultados secundarios fueron la evaluación de la perfusión y la tasa de absceso posoperatorio que requirió intervención.RESULTADOS:Este estudio se cerró anticipadamente debido a la disminución de las tasas de acumulación. Un total de 25 centros reclutaron a 347 pacientes, de los cuales 178 fueron, de manera aleatoria, asignados a perfusión y 169 a estándar. Los grupos tenían datos demográficos específicos del tumor y del paciente similares. Recibieron quimio-radioterapia neoadyuvante el 63,5% de la perfusión y el 65,7% del estándar (p> 0,05). La anastomosis estuvo en un nivel promedio de 5,2 + 3,1 cm en perfusión en comparación con 5,2 + 3,3 cm en estándar (p> 0,05). Se reportó una visualización suficiente de la perfusión en el 95,4% de los pacientes del grupo de perfusión. El absceso posoperatorio que requirió tratamiento quirúrgico fue de 5,7% de los perfusion y en el 4,2% del estándar (p = 0,75). Se informó fuga anastomótica en el 9,0% de la perfusión en comparación con el 9,6% del estándar (p = 0,37). En el análisis de regresión multivariante, no hubo diferencias en las tasas de fuga anastomótica entre la perfusión y el estándar (OR 0,845; IC del 95% (0,375; 1,905); p = 0,34).LIMITACIONES:No se logró el tamaño de muestra predeterminado para reducir satisfactoriamente el riesgo de error tipo II.CONCLUSIÓN:Se puede obtener una visualización adecuada de la perfusión con ICG-F. Sin embargo, no se observaron diferencias en las tasas de fuga anastomótica entre los pacientes que se sometieron a evaluación de la perfusión versus la técnica quirúrgica estándar. En manos expertas, agregar ICG-F a la rutina de la práctica estándar no agrega ningún beneficio clínico evidente. Consulte Video Resumen en http://links.lww.com/DCR/B560. (Traducción-Dr Juan Antonio Villanueva-Herrero).

Natural orifice specimen extraction for colorectal surgery: Early adoption in a Western population.

Natural orifice specimen extraction (NOSE) challenges the limits of minimally invasive colorectal surgery by exploiting a natural opening for specimen delivery. Technically challenging, it is less painful, requires smaller wounds and abolishes the possibility of incisional hernia. These advantages of NOSE are seen in the obese (body mass index [BMI] >30kg/m2 ). This audit aims to demonstrate the feasibility of NOSE colectomy in an Australian population. Prospective data collected from 2007 to the present were retrospectively analysed. Only patients with mucosally benign colorectal conditions were included: complex diverticulosis, post-malignant polypectomy and volvulus. Left sided mucosal malignancies were excluded. Study end-points included postoperative length of stay, anastomotic leak rate and wound complications. In total, 159 patients underwent NOSE, mean age 59years (19-88), mean BMI 28.2kg/m2 (17-45). Ten (6.2%) patients developed retroperitoneal small bowel herniation; seven required further surgery. There were five (3.1%) anastomotic leaks, seven (4.4%) postoperative ileus and three (1.9%) anastomotic bleeds. One (0.6%) patient had a superficial wound infection. There were no port site hernias. Patients with BMI <30kg/m2 (98 patients) and BMI >30kg/m2 (59 patients) were compared; there was no difference in anastomotic leak rate (P=0.60), complication rate (P=0.71) and length of stay (P=0.63). However, duration of operation increased with BMI (P=0.000). This large series of NOSE colectomy from Australia suggests that NOSE is comparable to conventional laparoscopic colectomy in terms of postoperative outcome. Given that obesity has not featured in the NOSE literature, our study suggests that NOSE, for benign disease, is safe in obese patients, without added morbidity.

A prospective trial of intraoperative tissue oxygenation measurement and its association with anastomotic leak rate after Ivor Lewis esophagectomy.

BackgroundAnastomotic leak following Ivor Lewis esophagectomy is associated with increased morbidity/mortality and decreased survival. Tissue oxygenation at the anastomotic site may influence anastomotic leak. Methods for establishing tissue oxygenation at the anastomotic site are lacking.MethodsOver a 2-year study period, 185 Ivor Lewis esophagectomies were performed. Study participants underwent measurement of gastric conduit tissue oxygenation at the planned anastomotic site using the wireless pulse oximetry device. Associations between anastomotic leaks or strictures and tissue oxygenation levels were analyzed using Wilcoxon rank sum test or Fisher’s exact test.ResultsAmong study participants (n=114), median gastric conduit tissue oxygenation level was 92% (range, 62–100%). There were 8 (7.0%) anastomotic leaks and 3 (2.6%) strictures. Analysis of tissue oxygenation as a continuous variable showed no difference in median tissue oxygenation in patients with and without leaks (98% and 92%; P=0.2) and stricture formation (89% and 92%; P=0.6). Analysis of tissue oxygenation as a dichotomous variable found no difference in anastomotic leak rates [7.5% (n=93) in >80% vs. 0% (n=20) in ≤80%; P=0.3]. There were no significant differences in leak rates in concurrent study nonparticipants.ConclusionsNo significant association was observed between intraoperative tissue oxygenation at the anastomotic site and subsequent anastomotic leak or stricture formation among patients undergoing Ivor Lewis esophagectomy.

21- versus 25-mm Circular Staplers for Cervical Anastomosis: A Propensity-Matched Study

BackgroundThe use of a small circular stapler (CS) has been reported to increase the incidence of benign anastomotic stricture of the intrathoracic anastomosis after esophagectomy, but no study has evaluated the effects of the CS size on cervical esophagogastrostomy. Based on a propensity-matched comparison, the present study was designed to determine whether the perioperative outcomes differ between 21- and 25-mm CSs after minimally invasive esophagectomy with cervical anastomosis. MethodsFrom January 2015 to December 2017, 162 patients who received CS cervical esophagogastric anastomosis after minimally invasive esophagectomy for esophageal cancer were identified from our surgical database. A propensity-matched analysis was used to compare the outcomes between the 21- and 25-mm CS groups. Endpoints included anastomotic leak, dysphagia, reflux, stricture, and other major postoperative outcomes within 6 postoperative months. ResultsThere were 69 and 93 patients in the 21- and 25-mm CS groups, respectively. Propensity matching produced 57 patients in each group. The two groups were not remarkably different in benign anastomotic stricture rate (P = 0.528). All strictures were resolved by balloon dilatation. The 25-mm CS group had a significantly longer operative time in cervical anastomosis than the 21-mm group (P = 0.005). No statistically significant differences in anastomotic leak rates, dysphagia scores, reflux scores, or other postoperative complications were noted between the two groups. ConclusionsThe use of a 21-mm CS in minimally invasive esophagectomy with cervical esophagogastric anastomosis did not result in greater anastomotic stricture as compared with a 25-mm CS. The 21-mm CS was associated with a significantly shorter operative time.

Is Preoperative G-Tube Use Safe for Esophageal Cancer Patients?

Objective: Gastrostomy tubes (g-tubes) have been used with caution prior to esophageal resection due to the risks of inoculation metastasis and of injury to the gastric conduit used for reconstruction. In this study, we aim to evaluate the safety of preoperative g-tube placement by comparing outcomes in patients undergoing esophageal resection with and without prior g-tube use. Method: We retrospectively reviewed our institution’s database of 1113 esophagectomies performed between 1994 and 2018. We included only patients who received neoadjuvant therapy and identified 65 patients who received preoperative nutritional support through a g-tube (GT+) and 657 who did not (GT–). Demographics, postoperative complications, survival, and cancer recurrence rates were compared between GT + and GT– using Chi-squared and Kaplan–Meier survival analyses. Results: Seven-hundred twenty-two patients (122 female, 600 male) with a median age of 63.2 (28.2–86.3) met our inclusion criteria. Between GT+ (n = 65) and GT– (n = 657), there were no significant differences in anastomotic leak rates (11.5% vs 10.9%; p = 0.901), postoperative mortality (3.1% vs 3.9%; p = 0.765), or overall complications (63.1% vs 65.1%; p = 0.746). GT + was associated with a significantly lower overall survival compared to GT– (32.5 m vs 92.9 m; p = 0.003), and tumor recurrence rates were similar (30.6% vs 31.8%; p = 0.851). There were no cases documenting damage to the gastric conduit caused by prior g-tube placement. Conclusions: G-tube usage was not associated with increased tumor recurrence, anastomotic leak rates, or overall complication rates in this study. Our data suggest that g-tube usage is safe for patients with esophageal cancer requiring preoperative nutrition.

Thoracoscopy vs. thoracotomy for the repair of esophageal atresia and tracheoesophageal fistula: a systematic review and meta-analysis.

Esophageal atresia (EA) and tracheoesophageal fistula (TEF) require emergency surgery in the neonatal period to prevent aspiration and respiratory compromise. Surgery was once exclusively performed via thoracotomy; however, there has been a push to correct this anomaly thoracoscopically. In this study, we compare intra- and post-operative outcomes of both techniques. A systematic review and meta-analyses was performed. A search strategy was developed in consultation with a librarian which was executed in CENTRAL, MEDLINE, and EMBASE from inception until January 2017. Two independent researchers screened eligible articles at title and abstract level. Full texts of potentially relevant articles were then screened again. Relevant data were extracted and analyzed. 48 articles were included. A meta-analysis found no statistically significant difference between thoracoscopy and thoracotomy in our primary outcome of total complication rate (OR 0.98, [0.29, 3.24], p = 0.97). Likewise, there were no statistically significant differences in anastomotic leak rates (OR 1.55, [0.72, 3.34], p = 0.26), formation of esophageal strictures following anastomoses that required one or more dilations (OR 1.92, [0.93, 3.98], p = 0.08), need for fundoplication following EA repair (OR 1.22, [0.39, 3.75], p = 0.73)-with the exception of operative time (MD 30.68, [4.35, 57.01], p = 0.02). Considering results from thoracoscopy alone, overall mortality in patients was low at 3.2% and in most cases was due to an associated anomaly rather than EA repair. Repair of EA/TEF is safe, with no statistically significant differences in morbidity when compared with an open approach.Level of evidence 3a systematic review of case-control studies.

Examining Utility of Routine Splenic Flexure Mobilization during Colectomy and Impact on Anastomotic Complications

BackgroundDespite a lack of supporting data, routine splenic flexure mobilization (SFM) during colectomy has been thought to reduce anastomotic leak (AL). We evaluated the impact of SFM on outcomes in distal colectomy. Study designThe 2005–2016 NSQIP database identified 66,068 patients undergoing distal colectomy with anastomosis. Cohorts were stratified by addition of SFM. Postoperative outcomes were compared between groups. Regression analysis identified factors affecting odds of developing AL. ResultsSFM was performed in 27,475 patients (41.6%). There was no difference in overall complications between cases with SFM and those without (p = 0.55). SFM had longer operative times (220 min vs. 184 min; p < 0.0001). SFM was not associated with any difference in AL rate (3.6% vs. 3.7%; p = 0.86). Factors most associated with AL were lack of oral antibiotic preparation (OR 1.93; p < 0.001), chemotherapy (OR 1.91; p < 0.001), and weight loss (OR 1.68; p = 0.0005). Operative indication and approach did not affect leak. ConclusionsSFM in distal colectomy increased operative time without decreasing overall complications or AL. Routine splenic flexure mobilization may add risk without significant benefit.

Low Ligation of Inferior Mesenteric Artery in Laparoscopic Anterior Resection for Rectal Cancer Reduces Genitourinary Dysfunction: Results From a Randomized Controlled Trial (HIGHLOW Trial).

The aim of the present study was to compare the incidence of genitourinary (GU) dysfunction after elective laparoscopic low anterior rectal resection and total mesorectal excision (LAR + TME) with high or low ligation (LL) of the inferior mesenteric artery (IMA). Secondary aims included the incidence of anastomotic leakage and oncological outcomes. The criterion standard surgical approach for rectal cancer is LAR + TME. The level of artery ligation remains an issue related to functional outcome, anastomotic leak rate, and oncological adequacy. Retrospective studies failed to provide strong evidence in favor of one particular vascular approach and the specific impact on GU function is poorly understood. Between June 2014 and December 2016, patients who underwent elective laparoscopic LAR + TME in 6 Italian nonacademic hospitals were randomized to high ligation (HL) or LL of IMA after meeting the inclusion criteria. GU function was evaluated using a standardized survey and uroflowmetric examination. The trial was registered under the ClinicalTrials.gov Identifier NCT02153801. A total of 214 patients were randomized to HL (n = 111) or LL (n = 103). GU function was impaired in both groups after surgery. LL group reported better continence and less obstructive urinary symptoms and improved quality of life at 9 months postoperative. Sexual function was better in the LL group compared to HL group at 9 months. Urinated volume, maximum urinary flow, and flow time were significantly (P < 0.05) in favor of the LL group at 1 and 9 months from surgery. The ultrasound measured post void residual volume and average urinary flow were significantly (P < 0.05) better in the LL group at 9 months postoperatively. Time of flow worsened in both groups at 9 months compared to baseline. There was no difference in anastomotic leak rate (8.1% HL vs 6.7% LL). There were no differences in terms of blood loss, surgical times, postoperative complications, and initial oncological outcomes between groups. LL of the IMA in LAR + TME results in better GU function preservation without affecting initial oncological outcomes. HL does not seem to increase the anastomotic leak rate.

Anastomotic Failure in Colorectal Surgery: Where Are We at?

Anastomotic leak (AL) can be a devastating complication in colorectal surgery. While it is less frequent in the modern era, it still results in significant morbidity and mortality, prolonged hospital stays and increases the costs and demands on health services. There is inevitable interplay between patient physiology and technical factors that predispose a patient to AL. Obesity, preoperative total proteins, male gender, ongoing anticoagulant treatment, intraoperative complication and number of hospital beds have been identified as independent risk factors. This has led to an online risk calculator for AL. Non-steroidal anti-inflammatory drugs and neoadjuvant chemoradiotherapy have also been implicated, but no significant evidence has yet been found to support causation. In addition, technical factors such as type of anastomosis, mechanical bowel preparation, drains, omentoplasty and faecal diversion have failed to show significant differences in AL rates. Early diagnosis and intervention in AL is essential in reducing the rates of morbidity and mortality. Clinical assessment has high sensitivity but low specificity and should be used in combination with imaging techniques to get a diagnosis. C-reactive protein is also a useful marker. The management will depend on the grade of AL and the clinical state of the patient. Management options include conservative measures such as antibiotics and/or percutaneous drainage to more invasion procedures such as open drainage and/or Hartmann's procedure. In conclusion, ALs will forever pose challenges to the surgeon in diagnosis and management. It is often the yardstick by which each surgeon is measured and is the source of significant morbidity to patients and health care services worldwide. As a result, a low threshold for investigation and intervention is mandatory to ensure better outcomes and lower overall mortality and morbidity.

Effects of preoperative carbohydrate drinks on postoperative outcome after colorectal surgery

Overnight fasting before surgery used to be the routine. Overnight fasting changes patients’ metabolic state and influences their perioperative stress response. The aim of the study was to investigate the effects of preoperative carbohydrate drinks on return of bowel sounds and movement, postoperative complications, and length of stay. It is a prospective non-randomized study with 196 consecutive patients who underwent surgery in Vsetin hospital for a diagnosis of colon or rectal cancer from January 2010 to January 2015. Patients were assigned into two groups – with (PreOp group) and without (Non-PreOp group) carbohydrate drink. We collected data regarding age, comorbidities, local stage of tumor, urgency and type of operation. The output variables recorded included postoperative bowel sounds, first stool, postoperative complications, anastomotic leak, surgical site infections, and length of hospital stay. In the PreOp group there was faster return of peristalsis (p = 0,033). We did not prove that the PreOp influenced passage of stool. The total number of postoperative complications was higher in the Non-PreOp group than in the PreOp group, 57 (57%) vs. 30 (31%) respectively, (p = 0,0003). The most frequent type of complication was surgical site infection (SSI). It occurred in 17% in the PreOp group and in 34% in the Non-PreOp group (p = 0,004). The difference in anastomotic leak rate was not significant. Mean hospital stay was 13 days in the PreOp group and 16 days in the Non-PreOp group (p = 0,006). Use of carbohydrate solution before the surgery accelerates return of bowel sounds, reduces total number of postoperative complications, SSI and shortens the length of hospital stay. Carbohydrate beverages should be used more widely in daily practice.

Challenging surgical dogma in the management of proximal esophageal atresia with distal tracheoesophageal fistula: Outcomes from the Midwest Pediatric Surgery Consortium

PurposePerioperative management of infants with esophageal atresia and tracheoesophageal fistula (EA/TEF) is frequently based on surgeon experience and dogma rather than evidence-based guidelines. This study examines whether commonly perceived important aspects of practice affect outcome in a contemporary multi-institutional cohort of patients undergoing primary repair for the most common type of esophageal atresia anomaly, proximal EA with distal TEF. MethodsThe Midwest Pediatric Surgery Consortium conducted a multicenter, retrospective study examining selected outcomes on infants diagnosed with proximal EA with distal TEF who underwent primary repair over a 5-year period (2009–2014), with a minimum 1-year follow up, across 11 centers. Results292 patients with proximal EA and distal TEF who underwent primary repair were reviewed. The overall mortality was 6% and was significantly associated with the presence of congenital heart disease (OR 4.82, p=0.005). Postoperative complications occurred in 181 (62%) infants, including: anastomotic stricture requiring intervention (n=127; 43%); anastomotic leak (n=54; 18%); recurrent fistula (n=15; 5%); vocal cord paralysis/paresis (n=14; 5%); and esophageal dehiscence (n=5; 2%). Placement of a transanastomotic tube was associated with an increase in esophageal stricture formation (OR 2.2, p=0.01). Acid suppression was not associated with altered rates of stricture, leak or pneumonia (all p>0.1). Placement of interposing prosthetic material between the esophageal and tracheal suture lines was associated with an increased leak rate (OR 4.7, p<0.001), but no difference in the incidence of recurrent fistula (p=0.3). Empiric postoperative antibiotics for >24h were used in 193 patients (66%) with no difference in rates of infection, shock or death when compared to antibiotic use ≤24h (all p>0.3). Hospital volume was not associated with postoperative complication rates (p>0.08). Routine postoperative esophagram obtained on day 5 resulted in no delayed/missed anastomotic leaks or a difference in anastomotic leak rate as compared to esophagrams obtained on day 7. ConclusionMorbidity after primary repair of proximal EA and distal TEF patients is substantial, and many common practices do not appear to reduce complications. Specifically, this large retrospective series does not support the use of prophylactic antibiotics beyond 24h and empiric acid suppression may not prevent complications. Use of a transanastomotic tube was associated with higher rates of stricture, and interposition of prosthetic material was associated with higher leak rates. Routine postoperative esophagram can be safely obtained on day 5 resulting in earlier initiation of oral feeds. Study typeTreatment study. Level of evidenceIII.