Risk factors and outcomes of occurrence of anastomotic leakage and reoperations for its management after colorectal surgery

Background: Anastomotic leakage (AL) is still the most annoying postsurgery complication after colorectal resection due to its serious complications up to death. Limited data were available regarding differences in AL incidence, management, and consequences for different types of colorectal resection. The aim of the present work was to evaluate differences in incidence of AL, incidence of postoperative complications, and length of hospital stay in a large number of patients who underwent elective colorectal resection for management of colorectal lesions. In addition to detect when and what type of reoperation for management of AL occur after colorectal resection. Patients: All 250 included patients underwent elective surgeries for colorectal resection with performance of primary anastomosis for management of colorectal neoplastic and non-neoplastic diseases in the period between May 2016 and July 31, 2021. We followed the patients for 90 days; we registered the follow-up findings. Results: the rates of AL occurrence were variable after the different procedures. The lowest rate of AL occurrence was found in patients who underwent right hemicolectomy, then in patients who underwent sigmoidectomy, left hemicolectomy, transversectomy and anterior resection (p= 0.004). A stoma was frequently performed during reoperation (79.5%) which was significantly different between different procedures: 65.5% in right hemicolectomy, 75.0% in transversectomy, 85.7% in left hemicolectomy, and 93.0% in sigmoid resection (p< 0.001). Conclusion Rates, types, time of occurrence and severity of AL vary according to the type of colectomy performed and selective construction of stoma during AL reoperation is currently safely applied with comparable mortality rates for patients who did and who did not have a stoma after reoperation. (AU)

Management and outcomes of gastric leak after sleeve gastrectomy: results from the 2010-2020 national registry / 中华医学杂志(英文版)

BACKGROUND@#Management of gastric leak after sleeve gastrectomy (SG) is challenging due to its unpredictable outcomes. We aimed to summarize the characteristics of SG leaks and analyze interventions and corresponding outcomes in a real-world setting.@*METHODS@#To retrospectively review of 15,721 SG procedures from 2010 to 2020 based on a national registry. A cumulative sum analysis was used to identify a fitting curve of gastric leak rate. The Kaplan-Meier method and log-rank tests were performed to calculate and compare the probabilities of relevant outcomes. The logistic regression analysis was conducted to determine the predictors of acute leaks.@*RESULTS@#A total of 78 cases of SG leaks were collected with an incidence of 0.5% (78/15,721) from this registry (6 patients who had the primary SG in non-participating centers). After accumulating 260 cases in a bariatric surgery center, the leak rate decreased to a stably low value of under 1.17%. The significant differences presented in sex, waist circumference, and the proportion of hypoproteinemia and type 2 diabetes at baseline between patients with SG leak and the whole registry population ( P = 0.005, = 0.026, <0.001, and = 0.001, respectively). Moreover, 83.1% (59/71) of the leakage was near the esophagogastric junction region. Leakage healed in 64 (88.9%, 64/72) patients. The median healing time of acute and non-acute leaks was 5.93 months and 8.12 months, respectively. Acute leak (38/72, 52.8%) was the predominant type with a cumulative reoperation rate >50%, whereas the cumulative healing probability in the patients who required surgical treatment was significantly lower than those requring non-surgical treatment ( P = 0.013). Precise dissection in the His angle area was independently associated with a lower acute leak rate, whereas preservation ≥2 cm distance from the His angle area was an independent risk factor.@*CONCLUSIONS@#Male sex, elevated waist circumference, hypoproteinaemia, and type 2 diabetes are risk factors of gastric leaks after SG. Optimizing surgical techniques, including precise dissection of His angle area and preservation of smaller gastric fundus, should be suggested to prevent acute leaks.

Risk factors for anastomotic leakage following total or subtotal colectomy

Introduction: A higher rate of anastomotic leakage (AL) is reported after ileosigmoid anastomosis (ISA) or ileorectal anastomosis (IRA) in total or subtotal colectomy (TSC) compared with colonic or colorectal anastomosis. Themain aimof the present studywas to assess potential risk factors for AL after ISA or IRA and to investigate determinants of morbidity. Methods: We identified 180 consecutive patients in a prospective referral, single center database, in which 83 of the patients underwent TSC with ISA or IRA. Data regarding the clinical characteristics, surgical treatment, and outcome were assessed to determine their association with the cumulative incidence of AL and surgical morbidity. Results: Ileosigmoid anastomosis was performed in 51 of the patients (61.5%) and IRA in 32 patients (38.6%). The cumulative incidence of ALwas 15.6% (13 of 83 patients). A higher AL rate was found in patients under 50 years-old (p=0.038), in the electivelaparoscopic approach subgroup (p=0.049), and patients in the inflammatory bowel disease (IBD) subgroup (p=0.009). Furthermore, 14 patients (16.9%) had morbidity classified as Clavien-Dindo ≥ IIIA. Discussion: A relatively high incidence of AL after TSC was observed in a relatively safe surgical procedure. Our findings suggest that the risk of AL may be higher in IBD patients. According to our results, identifying risk factors prior to surgerymay improve short-term outcomes. (AU)

Caracterización de la fuga anastomótica en operados por cáncer del esófago en Cuba / Characterization of Anastomotic Leak in Patients Operated on for Esophageal Cancer in Cuba

Introducción: La fuga anastomótica es la principal complicación de la cirugía del esófago, con altos índices de incidencia y mortalidad. Objetivo: Identificar los factores involucrados en la aparición de la fuga anastomótica en pacientes operados de cáncer de esófago en Cuba en el periodo de 1988 al 2020. Métodos: Se realizó una investigación observacional clínico epidemiológica multicéntrica, no randomizada, en el periodo de 1988 al 2020. El universo y la muestra quedaron constituidos por 2844 y 595 enfermos de 9 centros hospitalarios. Algunas variables estudiadas incluyeron sexo, edad, variedad histológica, intervención quirúrgica realizada, comorbilidades y su interrelación con la fuga anastomótica. Resultados: La fuga anastomótica predominó en el grupo de mayores de 55 años (17,8 por ciento), en el sexo femenino 65 (10,9 por ciento), en los no fumadores 79 (13,3 por ciento) y en los que no ingerían bebidas alcohólicas con 100 pacientes (16,8 por ciento). En enfermos con niveles de albúmina normales 98 (16,5 por ciento), con proteínas bajas 94 (15,7por ciento) y cifras normales de hemoglobina 105 (17,6 por ciento). En la variedad histológica adenocarcinoma 65 (10,9 por ciento), la técnica quirúrgica transhiatal 69 (11,6 por ciento), realizada de forma manual 123 (20,7 por ciento), de localización cervical 111 (18,6 por ciento), en cara anterior 57 (9,6 por ciento), en un plano 78 (13,1 por ciento), en la variante término-lateral 120 (20,2 por ciento). Conclusiones: La fuga anastomótica predominó en mujeres mayores de 50 años, con adenocarcinoma, operadas con técnicas transhiatales, manuales, en un plano, termino-laterales, en cara anterior y con hipoproteinemia(AU)

Introduction: Anastomotic leak is the main complication of esophageal surgery, with high incidence and mortality rates. Objective: To identify the factors involved in the appearance of anastomotic leak in patients operated on for esophageal cancer in Cuba in the period from 1988 to 2020. Methods: A nonrandomized, multicenter, clinical-epidemiological and observational investigation was carried out in the period from 1988 to 2020. The universe and the sample consisted of 2844 and 595 patients from nine hospital centers. Some of the variables studied included sex, age, histological variety, surgical intervention performed, comorbidities, and their interrelation with anastomotic leak. Results: Anastomotic leak prevailed in the group aged over 55 years (17.8 percent), in the female sex (65; 10.9 percent)), in nonsmokers (79; 13.3 percent)) and in those who did not ingest alcoholic beverages (100, 16.8; as well as in patients with normal albumin levels (98; 16.5), with low proteins (94; 15.7 percent) and with normal levels of hemoglobin (105; 17.6 percent). In the histological variety of adenocarcinoma (65; 10.9 percent), there was a predominance of the transhiatal surgical technique (69; 11.6 percent), performed manually (123; 20.7 percent), of cervical location (111; 18.6 percent), in the anterior face (57; 9.6 percent), in one plane (78; 13.1 percent), and in the termino-lateral variant (120; 20.2 percent). Conclusions: Anastomotic leak prevailed in women aged over 50 years, with adenocarcinoma, operated on through transhiatal techniques, manually, in one plane, using the termino-lateral variant, in the anterior face and with hypoproteinemia(AU)

Análisis de variables relacionadas con la morbimortalidad de la anastomosis ileocólica después de hemicolectomía derecha / Analysis of variables related to morbidity and mortality of the ileocolic anastomosis after right hemicolectomy

Introducción: La hemicolectomía derecha con anastomosis ileocólica es una cirugía frecuentemente realizada para la que existen muchas formas de realizarla. Objetivo: Evaluar cuál es la mejor anastomosis ilecólica en términos de morbimortalidad y realizar una evaluación comparativa de la evolución clínica posoperatoria según el tipo de configuración anastomótica. Pacientes y Método: Estudio observacional analítico, con criterios de inclusión y exclusión definidos. Las variables a estudiar las dividimos en dos grupos, las relacionadas a la técnica quirúrgica y su configuración anastomótica, y las variables relacionadas con resultados de la intervención quirúrgica, creando una tabla de contingencia en que se cruzan los datos. Análisis de datos con STATA 13.0. Resultados: 216 pacientes con anastomosis ileocólica, destacando significancia estadística al cruzar: A) reoperación y tipo de sutura (p = 0,044), con un OR 3,4 (IC 95% 0,94-18,6), siendo de mayor riesgo la mecánica; B) mortalidad y urgencia (p = 0,001) con un OR 7,76 (IC 95% 1,56-49,29), siendo de mayor riesgo la cirugía de urgencia. Las anastomosis isoperistálticas possen eliminación de gases (p < 0,001), tránsito intestinal (p = 0,009) e ingesta de sólidos (p = 0,005) más precoz. Hay expulsión de gases antes en el abordaje laparoscópico, sutura manual, configuración término lateral e isoperistáltica de la anastomosis y cirugía electiva. Conclusión: Existe gran variabilidad de técnicas para realizar la anastomosis ileocólica. La anastomosis manual muestra menor probabilidad de necesitar una reintervención quirúrgica, la cirugía electiva tiene menor mortalidad que la realizada de urgencia. Sugerimos realizarla vía laparoscópica, con sutura manual, término lateral, isoperistáltica y de forma electiva, por tener una recuperación más corta.

Introduction: Right hemicolectomy with ileocolic anastomosis is a frequent surgery with many ways to perform it. Objective: To evaluate which is the best ileocolic anastomosis in terms of morbidity and mortality and to make a comparative evaluation of the postoperative clinical evolution according to the type of anastomosis. Patients and Method: Analytical observational study, with defined inclusion and exclusion criteria. The variables to be studied are divided into two groups, those related to the surgical technique and its anastomotic configuration, and the variables related to the results of the surgical intervention, creating a contingency table that crosses the data. Data analysis with STATA 13.0. Results: 216 patients with ileocolic anastomosis, highlighting statistical significance when crossing: A) reoperation and type of suture (p = 0.044), with UN or 3.4 (95% CI 0.94 to 18.6), being of greater risk the mechanics; B) mortality and urgency (p = 0.001) with an OR 7.76 (95% CI 1.56-49.29), with emergency surgery being of greater risk. Isoperistaltic anastomosis with gas elimination (p < 0.001), intestinal transit (p = 0.009) and solid intake (p = 0.005) earlier. There is earlier expulsion of gases in the laparoscopic approach, manual suture, end-to-side and isoperistaltic of the anastomosis and elective surgery. Conclusion: There is great variability of techniques to perform the ileocolic anastomosis. Manual anastomosis is less likely to require surgical reoperation, elective surgery has a lower mortality than that of emergency surgery. We suggest performing it laparoscopically, with manual suture, lateral term, isoperistaltic and electively, for having a shorter recovery.

Impacto de las filtraciones anastomóticas en cirugía colorrectal / Impact of anastomotic leak in colorectal surgery

Introducción: La filtración de anastomosis es una de las complicaciones de mayor impacto en cirugía colorrectal. Objetivo: Analizar la frecuencia e impacto de las filtraciones anastomóticas en cirugía laparoscópica colorrectal. Material y método: Estudio longitudinal de base de datos prospectiva de pacientes operados por cirugía colorrectal entre julio de 2007 y agosto de 2014. Resultados: De un total de 654 pacientes operados, 52,3% correspondían a hombres con una edad promedio de 57 años (42-72). La indicación más frecuente fue cáncer colorrectal con 244 pacientes, 159 (24,3%) operados por cáncer de colon y 85 (12,9%) por cáncer de recto, seguido por la enfermedad diverticular con 239 pacientes (36,5%) y 171 pacientes (26,1%) con otros diagnósticos. En 44 pacientes (6,7%) se objetivó filtración anastomótica, con una mediana de 4 días desde el postoperatorio para su diagnóstico. Como factores asociados a filtración se identificó al género masculino, riesgo anestesiológico según ASA, necesidad de conversión a laparotomía y la anastomosis ileoanal. En relación con el tratamiento, 15 pacientes (33,7%) fueron tratados de forma médica exitosa y 29 fue necesario reintervenirlos, de los cuales 23 (79,3%) requirieron una ostomía de protección. No hubo mortalidad asociada a la cirugía, y el promedio de hospitalización en los pacientes con filtración fue de 12 vs. 5 días para los pacientes sin filtración de la anastomosis. Conclusión: Este trabajo permite identificar a grupos de pacientes con mayor riesgo de filtraciones anastomóticas, quienes duplican su estadía hospitalaria y en un alto porcentaje deben ser reintervenidos. La sospecha y diagnostico precoz reducen la morbimortalidad.

Introduction: Anastomotic leak is the most important complication on colorectal surgery. Objective: Analyze the frequency and impact of anastomotic leaks in laparoscopic colorectal surgery. Material and methods: Longitudinal study of prospective database of patients undergoing colorectal surgery between July 2007 and August 2014. Results: 654 patients operated, 52.3% were men with an average age of 57 years (42-72). The most frequent indication was colorectal cancer in 244 patients, 159 (24.3%) operated for colon cancer and 85 (12.9%) for rectal cancer followed by diverticular disease in 239 patients (36.5%) and 171 patients (26.1%) with other diagnoses. In 44 patients (6.7%) anastomotic leakage was observed with a median of 4 days post surgery for diagnosis. As factors associated with filtration, we identified male gender, anesthesic risk according to ASA, need for conversion to laparotomy and ileoanal anastomosis. With regard to treatment, 15 (33.7%) were successfully treated with medical therapy alone and 29 required re-intervention, of which 23 (79.3%) required an ostomy protection. There was no mortality associated with surgery and average LOS was 12 vs. 5 days in patients with filtration compared with patients without anastomotic leakeage. Conclusion: This serie helps to identify patients groups with increased risk of anastomotic leakage who double their hospital LOS and in a higher percentage should need re-intervention. Suspicion and early diagnosis reduces morbidity and mortality.

End-to-end versus end-to-side anastomosis in the treatment of esophageal atresia or tracheo-esophageal fistula / Anastomose terminoterminal versus terminolateral no tratamento da atresia ou fístula traqueoesofágica

Background: Dehiscence of esophageal anastomosis is frequent and there are still controversies which type of anastomosis is preferred to diminish its incidence . Aim: To compare end-to-end anastomosis versus end-to-side anastomosis in terms of anastomotic leakage, esophageal stricture and gastroesophageal reflux symptom. Methods: This study was carried out for two year starting from 2012. End-to-side and end-to-side anastomosis were compared in terms of anastomotic leakage, esophageal stricture, gastroesophageal reflux symptom, length of surgery and pack cell infusion. Results: Respectively to end-to-end and end-to-side anastomosis, duration of surgery was 127.63±13.393 minutes and 130.29±10.727 minutes (p=0.353); esophageal stricture was noted in two (5.9%) and eight (21.1%) cases (p=0.09); gastroesophageal reflux disease was detected in six (15.8%) and three (8.8%) cases (p=0.485); anastomotic leakage was found in five (13.2%) and one (2.9%) cases (p=0.203); duration of neonatal intensive care unit admission was significantly shorter in end-to-end (11.05±2.438 day) compared to end-to-side anastomosis (13.88±2.306 day) (p<0.0001). Conclusion: There were no significant differences between end-to-end and end-to-side anastomosis except for length of neonatal intensive care unit admission which was significantly shorter in end-to-end anastomosis group.

Racional: Deiscência de anastomose esofágica é frequente e ainda existem controvérsias qual tipo de anastomose é preferível para diminuir sua incidência. Objetivo : Comparar a anastomose terminoterminal versus a lateroterminal em termos de deiscência de anastomose, estenose de esôfago, e sintoma de refluxo gastroesofágico. Métodos : Este estudo foi realizado por dois anos a partir de 2012. Anastomoses terminoterminal e terminolateral foram comparadas em termos de deiscência de anastomose, estenose de esôfago, sintoma do refluxo gastroesofágico, duração da operação e transfusão. Resultados : Na comparação das anastomoses terminoterminal e terminolateral, respectivamente, a duração em minutos das operações foi de 127.63±13.393 e 130.29±10.727 (p=0,353); estenose esofágica foi observada em dois (5,9%) e oito (21,1%) casos (p=0,09); doença do refluxo gastroesofágico foi detectada em seis (15,8%) e três (8,8%) casos (p=0,485); deiscência de anastomose foi encontrada em cinco (13,2%) e um (2,9%) caso (p=0,203); duração do internamento na UTI neonatal foi significativamente menor na terminoterminal (11,05±2,438 dias) em comparação com terminolateral (13,88±2,306 dias, p<0,0001). Conclusão : Não houve diferença significativa entre as anastomoses terminoterminal e terminolateral, exceto para UTI neonatal que foi significativamente menor no grupo de anastomose terminoterminal.

EVALUATION OF RISK FACTORS AFFECTING ANASTOMOTIC LEAKAGE AFTER REPAIR OF ESOPHAGEAL ATRESIA / AVALIAÇÃO DOS FATORES DE RISCO QUE AFETAM DEISCÊNCIA DE ANASTOMOSE APÓS REPARAÇÃO DE ATRESIA ESOFÁGICA

Background:Anastomotic leak are reported among neonates who underwent esophageal atresia. Aim: To find risk factors of anastomotic leakage in patients underwent esophageal repair. Methods: All cases with esophageal atresia were included. In this case control study, patients were classified in two groups according to presence or absence of anastomotic leaks. Duration of study was 10 years. Results: Sixty-one cases were included. Mean±SD age at time of surgery in patients with leakage and without leakage was 9.50±7.25 and 8.83±6.93 respectively (p=.670). Blood transfusion and two layer anastomosis had significant correlation with anastomotic leakage. Conclusion:Blood transfusion and double layer anastomosis are associated with higher rate of anastomotic leakage.

Racional:Fístulas são relatadas entre os recém-nascidos que foram submetidos à reparação de atresia de esôfago. Objetivo:Encontrar fatores de risco de deiscência de anastomose nos pacientes submetidos à correção cirúrgica do esôfago. Métodos:Todos os casos com atresia de esôfago foram incluídos. Neste estudo caso-controle, os pacientes foram classificados em dois grupos de acordo com a presença ou ausência de fístula. Duração do estudo foi de 10 anos. Resultados:Sessenta e um casos foram incluídos. A média±DP da idade no momento da operação em pacientes com deiscência e sem foi 9,50±7,25 e 8,83±6,93, respectivamente (p=0,670). Transfusão de sangue e duas camadas anastomose tiveram correlação significativa com a deiscência da anastomose. Conclusão:Transfusão de sangue e anastomose em dois planos estão associadas com maior taxa de deiscência.

Mini-Gastric Bypass to Control Morbid Obesity and Diabetes Mellitus: What Radiologists Need to Know

Laparoscopic mini-gastric bypass surgery is a safe and simple surgical intervention for treating morbid obesity and diabetes mellitus and is now being performed more frequently. Radiologists must be critical in their postoperative evaluation of these patients. In this pictorial review, we explain and illustrate the surgical technique, normal postoperative anatomy, and associated complications as seen on imaging examinations, including fluoroscopy and computed tomography.

A Systematic Review and Meta-Analysis of the Incidence of Paravalvular Leak Incidence Post Procedure, Six Months and One-Year Following TAVI.

Aims: Paravalvular regurgitation (PVR) post transcatheter aortic valve implantation (TAVI) is associated with poor survival however considerable variability exists between incidences of PVR in current literature. The primary aim of this study was to establish the incidence of PVR post-procedure, at 6-months and 1-year following TAVI. The secondary aims of this study were to review the impact of moderate to severe PVR on mortality and examine strategies employed to reduce PVR. Methods: PubMed searches included articles detailing paravalvular leak rates post TAVI published between 2002 and 2013. A systematic review and meta-analysis of current literature to identify PVR incidence at three time points was performed using the random effects model of DerSimonian and Laird. A total of 19 studies were identified. For post procedure to 30 days, six months and one year; 7,652, 3,340 and 3,673 patients were included in the analysis of incidence of PVR. Results: The pooled analysis of PVR incidence was 8.21, 10.2 and 10.98% in each group respectively. Moderate-severe PVR is associated with an increased risk of mortality in all studies reviewed. Management strategies include balloon valvuloplasty, transcatheter aortic valve implantation-in-transcatheter aortic valve (TAVI-in-TAV), valve repositioning and the use of occlusion devices. Conclusion: Moderate-severe PVR occurs in approximately one in ten patients directly following TAVI and does not appear to change significantly in the first year. A number of feasible strategies can be employed to treat PVR. Consideration should be given to the development of early-intervention management algorithms for this patient cohort in order to improve survival post TAVI.