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Resumen Objetivo: El objetivo de este estudio es comparar los resultados perioperatorios del abordaje abierto (AA) con el abordaje laparoscópico (AL) para la reconstitución de tránsito (RT), y determinar factores de riesgo asociados a morbilidad posoperatoria. Material y Métodos: Se estudiaron pacientes consecutivos sometidos a RT entre enero de 2007 y diciembre de 2016 en nuestro centro. Se excluyeron aquellos con grandes hernias incisionales que requirieran reparación abierta simultánea. Se consignaron variables demográficas y perioperatorias, y se compararon ambos grupos. Además, se realizó una regresión logística para la identificación de factores de riesgo asociados a morbilidad posoperatoria en la serie. Resultados: Se realizaron 101 RT en el período. Se excluyeron 14 casos por hernia incisional, por lo que se analizaron 87 casos (46 AA y 41 AL). Diez pacientes en el grupo AL (24,4%) requirieron conversión, principalmente por adherencias. La morbilidad total de la serie fue de 36,8%, siendo mayor en el AA (50% vs 21,9%, p = 0,007). Hubo una filtración anastomótica en cada grupo. La estadía posoperatoria fue de 5 (3-52) días para el AL y 7 (4-36) días para el AA (p < 0,001). En la regresión logística, sólo el AA fue un factor de riesgo independientemente asociado a morbilidad posoperatoria (OR 2,89, IC 95% 1,11-7,49; p = 0,029). Conclusión: El abordaje laparoscópico se asocia a menor morbilidad y estadía posoperatoria que el abordaje abierto para la reconstitución del tránsito pos-Hartmann. En nuestra serie, el abordaje abierto fue el único factor independientemente asociado a morbilidad posoperatoria.

Introduction: Hartmann's reversal (HR) is considered a technically demanding procedure and is associated with high morbidity rates. Aim: The aim of this study is to compare the perioperative results of the open approach (OA) with the laparoscopic approach (LA) for HR, and to determine the risk factors associated with postoperative morbidity. Material and Methods: Consecutive patients undergoing HR between January 2007 and December 2016 at a university hospital were included. Patients with large incisional hernias that required an open approach a priori were excluded from the analysis. Demographic and perioperative variables were recorded. Analytical statistics were carried out to compare both groups, and a logistic regression was performed to identify risk factors associated with postoperative morbidity in the series. Results: A hundred and one HR were performed during the study period. Fourteen cases were excluded due to large incisional hernias, so 87 cases (46 OA and 41 LA) were analyzed. Ten patients in the LA group (24.4%) required conversion, mainly due to adhesions. The total morbidity of the series was 36.8%, being higher in the OA group (50% vs. 21.9%, p = 0.007). There was one case of anastomotic leakage in each group. The length of stay was 5 (3-52) days for LA and 7 (4-36) days for OA (p < 0.001). In the logistic regression, the OA was the only independent risk factor associated with postoperative morbidity in HR (OR 2.89, IC 95% 1.11-7.49; p = 0.029). Conclusion: A laparoscopic approach is associated with less morbidity and a shorter length of stay compared to the open approach for Hartmann's reversal. An open approach was the only factor independently associated with postoperative morbidity in our series.

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Resumen Objetivo: Comparar tres abordajes quirúrgicos (abierto, laparoscópico y laparoscópico convertido) para el manejo de complicaciones posoperatorias en cirugía colorrectal electiva realizadas primariamente por vía laparoscópica. Materiales y Método: Este estudio de cohorte retrospectivo incluyó pacientes reoperados después de una cirugía colorrectal laparoscópica electiva, agrupándose según la vía de abordaje de reoperación: abierta (RVA), laparoscópica (RVL) y laparoscópica convertida (RVLC). Las variables estudiadas fueron: preoperatorias (edad, sexo, puntuación ASA, IMC, comorbilidades e historia quirúrgica); operatorias (causa de reoperación, latencia para reoperación, tiempo operatorio, cirugía realizada y causa de conversión); y posoperatorias (tránsito intestinal, días de hospitalización, días de UCI, complicaciones médicas, infección del sitio quirúrgico, evisceración, transfusión y mortalidad a los 30 días). Resultados: Sin diferencias significativas para las variables preoperatorias y operatorias. En cuanto a las variables posoperatorias, el grupo de reoperaciones por vía laparoscópica, tuvo menos días de hospitalización (p = 0,012), menos días de UCI (p = 0,001) y un tránsito intestinal más rápido para reaparición de gases, heces y retorno a dieta sólida (p = 0,008, p = 0,029, p = 0,030, respectivamente). No hubo diferencias significativas en la infección del sitio quirúrgico, la evisceración, las complicaciones médicas, la transfusión y la mortalidad. Discusión y Conclusión: Este estudio reveló una mejor evolución clínica posoperatoria en el grupo de reoperación laparoscópica, con menor estancia hospitalaria y en UCI, y reducción del íleo posoperatorio, sin aumento de la morbimortalidad. Por lo tanto, la reoperación laparoscópica en cirugía colorrectal podría ser el abordaje más adecuado en pacientes debidamente seleccionados.

Aim: To compare three approaches (laparoscopic, open, and conversion of laparoscopic approach) for the management of intra-abdominal surgical complications after elective laparoscopic colorectal surgery. Materials and Method: This was a retrospective cohort study including patients who required reoperation due to an intra-abdominal surgical complication after initial elective laparoscopic colorectal surgery. Patients were grouped according to the reoperation approach-laparoscopic reoperation, laparoscopic reoperation that required conversion to open surgery, and open reoperation. Pre-operative variables (age, gender, ASA score, BMI, comorbidities, and surgical history), operative variables (cause of reoperation, latency for reoperation, operative time, surgery performed, and cause of conversion), and post-operative variables (intestinal transit, hospital days, ICU days, medical complications, surgical site infection, evisceration, transfusion and 30-day mortality), were compared between groups. Results: There were no significant differences between groups among the pre-operative and operative variables. In terms of post-operative variables, the laparoscopic reoperation group, had fewer hospital days (p = 0.012), fewer ICU days (p = 0.001), and faster intestinal transit regarding gas, stool and return to solid diet (p = 0.008, p = 0.029 and p = 0.030, respectively). However, there were no significant differences in surgical site infection, evisceration, medical complications, transfusion, and mortality. Discussion and Conclusión: This study revealed better post-operative clinical course in the laparoscopic reoperation group, with shorter hospital and ICU stay, and reduced postoperative ileus, without increased morbidity or mortality. Laparoscopic reoperation for complications after elective laparoscopic colorectal surgery may therefore be the preferred approach.

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Introduction: The literature converges regarding the use of C-reactive protein (CRP) tests between postoperative days (PODs) 3 and 5 of elective procedures. In this period, they have great sensitivity and negative predictive value (NPV) for severe and anastomotic complications about two days before the first clinical sign. The few studies on colorectal urgency suggest that, despite the different initial values according to the surgical indication, following POD 3, the level of CRP is similar to that of elective procedures. However, given the heterogeneity of the studies, there is no consensus on the cutoff values for this use. Objective: To validate the use and propose a PO CRP cut-off value in urgent colorectal procedures as an exclusion criterion for complications of anastomosis or the abdominal cavity. Method: Retrospective analysis of the medical records of 308 patients who underwent urgent colorectal surgical procedures between January 2017 and December 2019. The following data were considered: age, gender, surgical indication, type of procedure performed, complications, CRP levels preoperatively and from POD 1 to 4, and the severity of the complications. We compared the CRP levels and the percentage variations between the preoperative period and PODs 1 to 4 as markers of severe complications using the receiver operating characteristic (ROC) curve. Results: The levels of CRP on POD4, and their percentage drops between PODs 2 to 4 and PODs 3 to 4, were better to predict severe complications. A cutoff of 7.45mg/dL on POD 4 had 91.7% of sensitivity and NPV. A 50% drop between PODs 3 and 4 had 100% of sensitivity and NPV. Conclusion: Determining the level of CRP is useful to exclude severe complications, and it could be a criterion for hospital discharge in POD 4 of emergency colorectal surgery. (AU)

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Background: Surgical site infections (SSI) have an important impact on morbidity and mortality. Objective: This study, therefore, sought to assess the effect of a surgical care bundle on the incidence of SSI in colorectal surgery. Methods: We conducted a quasi-experimental intervention study with reference to the introduction of a surgical care bundle in 2011. Our study population, made up of patients who underwent colorectal surgery, was divided into the following two periods: 2007-2011 (pre-intervention) and 2012-2017 (post-intervention). The intervention's effect on SSI incidence was analyzed using adjusted odds ratios (OR). Results: A total of 1,727 patients were included in the study. SSI incidence was 13.0% before versus 11.6% after implementation of the care bundle (OR: 0.88, 95% confidence interval: 0.66-1.17, p = 0.37). Multivariate analysis showed that cancer, chronic obstructive pulmonary disease, neutropenia, and emergency surgery were independently associated with SSI. In contrast, laparoscopic surgery proved to be a protective factor against SSI. Conclusions: Care bundles have proven to be very important in reducing SSI incidence since the measures that constitute these protocols are mutually reinforcing. In our study, the implementation of a care bundle reduced SSI incidence from 13% to 11.6%, though the reduction was not statistically significant.

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BACKGROUND: Surgical site infections (SSI) have an important impact on morbidity and mortality. OBJECTIVE: This study, therefore, sought to assess the effect of a surgical care bundle on the incidence of SSI in colorectal surgery. METHODS: We conducted a quasi-experimental intervention study with reference to the introduction of a surgical care bundle in 2011. Our study population, made up of patients who underwent colorectal surgery, was divided into the following two periods: 2007-2011 (pre-intervention) and 2012-2017 (post-intervention). The intervention's effect on SSI incidence was analyzed using adjusted odds ratios (OR). RESULTS: A total of 1,727 patients were included in the study. SSI incidence was 13.0% before versus 11.6% after implementation of the care bundle (OR: 0.88, 95% confidence interval: 0.66-1.17, p = 0.37). Multivariate analysis showed that cancer, chronic obstructive pulmonary disease, neutropenia, and emergency surgery were independently associated with SSI. In contrast, laparoscopic surgery proved to be a protective factor against SSI. CONCLUSIONS: Care bundles have proven to be very important in reducing SSI incidence since the measures that constitute these protocols are mutually reinforcing. In our study, the implementation of a care bundle reduced SSI incidence from 13% to 11.6%, though the reduction was not statistically significant.

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BACKGROUND: Severe acute respiratory syndrome due to coronavirus 2 has rapidly spread worldwide in an unprecedented pandemic. Patients with an ongoing COVID-19 infection requiring surgery have higher risk of mortality and complications. This study describes the mortality and morbidity in patients with perioperative COVID-19 infection undergoing elective and emergency surgeries. METHODS: Prospective cohort of consecutive patients who required a general, gastroesophageal, hepatobiliary, colorectal, or emergency surgery during COVID-19 pandemic at an academic teaching hospital. The primary outcome was 30-day mortality and major complications. Secondary outcomes were specific respiratory mortality and complications. RESULTS: A total of 701 patients underwent surgery, 39 (5.6%) with a perioperative COVID-19 infection. 30-day mortality was 12.8% and 1.4% in patients with and without COVID-19 infection, respectively (p < 0.001). Major surgical complications occurred in 25.6% and 6.8% in patients with and without COVID-19 infection, respectively (p < 0.001). Respiratory complications occurred in 30.8% and 1.4% in patients with and without COVID-19 infection, respectively (p < 0.001). Mortality due to a respiratory complication was 100% and 11.1% in patients with and without COVID-19 infection, respectively (p < 0.006). CONCLUSIONS: 30-day mortality and surgical complications are higher in patients with perioperative COVID-19 infection. Indications for elective surgery need to be reserved for non-deferrable procedures in order to avoid unnecessary risks of non-urgent procedures.

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OBJECTIVE: The objective was to measure the incidence of surgical site infection (SSI) and identify risk factors, in patients undergoing elective surgery of the colon and rectum. MATERIALS AND METHODS: A prospective cohort study was performed from January 2017 to December 2018. RESULTS: A total of 130 patients were studied. The cumulative incidence of SSI was 12.3%. The 56.25% were superficial wound infections and the 31.25%, organ-space infection. The risk factors significantly associated with SSI were the non-administration of pre-operative oral nutrition, diabetes mellitus, heart disease, symptomatic state at the diagnosis of colorectal cancer (CRC), and ≥ 2 altered nutritional biochemical parameters at diagnosis. After multivariate , risk factors associated with SSI were: non-administration of preoperative enteral nutrition (odds ratio [OR] = 0.27; 95% confidence interval [CI]: 0.07-1.0), DM (OR = 3.0; 95% CI: 0.9-9.9), the heart disease (OR = 4.6; 95% CI: 1.1-18.6), and laparoscopic surgery (OR = 0.28; 95% CI: 0.08-0.97). The average stay was higher in patients with a diagnosis of SSI (11.9 vs. 9.2 days). CONCLUSIONS: Independent risk factors for SSI in CRC were the non-administration of pre-operative enteral nutrition, the existence of heart disease, and open surgery.

OBJETIVO: Estudiar la incidencia de infección del sitio quirúrgico y evaluar sus factores de riesgo en pacientes intervenidos de cirugía colorrectal electiva. MÉTODO: Se realizó un estudio de cohortes prospectivo desde enero de 2017 hasta diciembre de 2018. RESULTADOS: Se incluyeron 130 pacientes. La incidencia acumulada de infección del sitio quirúrgico fue del 12,3% (n = 16), siendo el 56,25% infecciones de herida y el 31,25% infecciones órgano-espacio. Los factores de riesgo asociados a infección del sitio quirúrgico con significación estadística fueron la no administración de nutrición oral preoperatoria, la diabetes mellitus, la enfermedad cardiaca, la presencia de síntomas en el momento del diagnóstico de cáncer colorrectal y tener al menos dos parámetros bioquímicos nutricionales alterados. Tras el análisis multivariante se asociaron la no administración de nutrición enteral preoperatoria (odds ratio [OR] = 0,27; intervalo de confianza del 95% [IC95%]: 0,07-1,0), la diabetes mellitus (OR = 3,0; IC95%: 0,9-9,9), la enfermedad cardiaca (OR = 4,6; IC95%: 1,1-18,6) y la cirugía laparoscópica (OR = 0,28; IC95%: 0,08-0,97). La estancia media fue mayor en los pacientes con diagnóstico de infección del sitio quirúrgico (11,9 frente a 9,2 días). CONCLUSIONES: Los factores de riesgo independientes para el desarrollo de infección del sitio quirúrgico en los pacientes con cáncer colorrectal fueron la no administración de nutrición oral preoperatoria, la enfermedad cardiaca y la cirugía abierta.

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Resumen Objetivo La dehiscencia anastomótica (DA) en cirugía colorrectal es una de las complicaciones más devastadoras. El empleo de la angiografía de fluorescencia con verde de indocianina, se ha introducido en este campo como una herramienta prometedora para reducir la incidencia de DA. El objetivo de este estudio es valorar en nuestro medio, los resultados de la introducción de esta técnica en cuanto a prevención de DA. Materiales y Método: Se llevó a cabo un estudio prospectivo, incluyendo 59 pacientes sometidos a cirugía colorrectal resectiva a los que se les realizó una evaluación mediante angiografía con verde de indocianina intraoperatoria de la vascularización anastomótica. Resultados: Tras la aplicación de la técnica, se modificó el punto de sección en 9 pacientes (15,25%); en los cuales no se registró ninguna DA. La tasa de complicaciones global fue de 35,59% (n = 21) objetivando 3 dehiscencias anastomóticas en la serie. Conclusión: Esta técnica se perfila como una estrategia adicional en la prevención de la aparición de DA. Serán necesarios estudios randomizados con inclusión de mayor número de pacientes para obtener resultados concluyentes.

Aim: Anastomotic leakage (AL) following colorectal surgery is one of the most devastating complication. The use of indocyanine green fluorescence angiography has been developed as a promising tool to reduce the incidence of AL. The aim of this study is to evaluate the impact of this technique on the prevention of AL. Materials and Method: A prospective study was carried out, including 59 patients undergoing resective colorectal surgery. It was performed intraoperatively indocyanine green angiography evaluation of the anastomotic perfusión in all of then. Results: The section point was modified in 9 patients (15.25%); in which no AL was registered. The overall complication rate was 35.59% (n = 21), founding 3 anastomotic dehiscences in the serie. Conclusion: In conclusion, in our experience this technique is an additional strategy in the prevention of the AL. Randomized control trial including more patients will be necessary to obtain conclusive results.

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RESUMEN Introducción: la seguridad de la colonoscopia realizada por cirujanos y el tratamiento de sus complica ciones han sido analizados aisladamente y en escasas publicaciones nacionales. Objetivos: el objetivo principal del estudio fue analizar las colonoscopias realizadas por cirujanos co lorrectales, sus complicaciones y resolución. El objetivo secundario fue comparar los resultados entre un hospital universitario y distintos centros del país dotados de cirujanos colorrectales que habían recibido entrenamiento en una residencia posbásica. Material y métodos: estudio multicéntrico, prospectivo a nivel nacional. Se incluyeron las colonosco pias realizadas entre 2011 y 2016 . Se analizaron como variables las complicaciones, edad, sexo, tipo de endoscopia, diagnóstico, tratamiento, sitio de realización y de entrenamiento del cirujano. Se ex presaron en promedios, porcentajes y rangos. El análisis estadístico consistió en el test exacto ordinal, relaciones y proporciones y exacto de Fisher. Se consideró significancia a p < 0,05. Resultados: de 24 907 procedimientos, 17 283 fueron diagnósticos y 17 202 provenían de centros del interior. Hubo 43 complicaciones (0,17%); 35 específicas: perforaciones (19), hemorragias (8), sín drome pospolipectomía (5) y técnicas (3), diagnosticadas y resueltas por el mismo equipo sin mor bimortalidad. No hubo diferencias en las complicaciones según el centro ni tipo de colonoscopia en incidencia o tratamiento. Todos los cirujanos se entrenaron en residencias de posgrado con programas de entrenamiento en colonoscopia. Conclusiones: existen similares resultados entre cirujanos provenientes de instituciones con residen cia posbásica y centros del interior al realizar colonoscopias. La colonoscopia realizada por cirujanos es un procedimiento seguro y posible de ser adquirido como competencia luego de un entrenamiento formal realizado en una residencia posbásica.

ABSTRACT Introduction: The safety of colonoscopies performed by surgeons and the management of their com plications has not been analyzed in depth in the low number of national publications. Objective: The primary endpoint of this study was to analyze the outcomes of colonoscopies perfor med by colorectal surgeons, in terms of complications. and their resolution. The secondary endpoint was to compare the results between a university hospital and different centers nationwide staffed with colorectal surgeons who had received formal training during a residency program in the surgical subspecialty. Material and methods: We conducted a multicenter, prospective and consecutive national study. The colonscopies performed between 2011 and 2016 were included. The variables analyzed included complications, age, sex, type of endoscopy, diagnosis, treatment, location were the procedure was performed and surgeon's training. The results were expressed as mean, percentage and range. The statistical analysis was performed using Fisher's exact test. A p value < 0.05 was considered statistically significant. Results: A total of 24,907 procedures were performed, 17,283 corresponded to diagnostic colonosco pies and 17,202 were made in provincial centers. Forty-four complications were recorded (0.17%), of which 35 were procedure-related complications: 19 perforations, 8 bleeding events, 5 post-polypec tomy syndromes and three related with the technique; all were diagnosed and solved by the same team without morbidity and mortality. There were no differences in the incidence of complications and how they were treated according to the center or type of colonoscopy. All the surgeons received colonoscopy training during a residency program in the surgical subspecialty. Conclusions: The results obtained in colonoscopies performed by surgeons trained in institutions with residency programs in surgical subspecialties are similar t Safe colonoscopies can be performed by surgeons who have been trained in institutions with a residency program in a surgical subspecialty and with a formal training program in colonoscopy.

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Resumen Introducción Los protocolo ERAS recomiendan la detección y optimización de la anemia preoperatoria. Objetivo Evaluar si la implantación de un protocolo de corrección de anemia preoperatoria en cirugía colorrectal electiva con un protocolo ERAS (grupo ERAS) reduce las transfusiones con respecto a un grupo de pacientes operado de la misma patología previo a su implantación (grupo preERAS). Objetivos secundarios Valorar estancia hospitalaria, complicaciones y reingresos a los 30 días tras el alta. Materiales y Método Comparamos los primeros 121 pacientes consecutivos que participaron en un protocolo ERAS con un protocolo corrección de anemia preoperatoria con los 135 previos a su implantación. Se consideraron resultados significativos p < 0,05. Resultados Se redujo el número de pacientes transfundidos en el grupo ERAS (31 (22,96%) vs 15 (12,4%), p = 0,028) y el número total de concentrados de hematíes transfundidos (3 ± 1,57 vs 1,8 ± 0,56, p < 0,001) con la aplicación del protocolo. No se encontraron diferencias estadísticamente significativas en los pacientes que recibieron hierro oral, pero sí en los que recibieron hierro intravenoso (3 vs 31, p < 0,001). Se redujo la estancia hospitalaria (11 ± 3,8 vs 9,8 ± 3,7, p = 0,018), sin aumentar la tasa de complicaciones ni los reingresos a los 30 días. Conclusión La aplicación de un protocolo de optimización de anemia preoperatoria en pacientes sometidos a cirugía colorrectal electiva siguiendo las guías ERAS redujo el número total de pacientes transfundidos, el número de concentrados de hematíes trasfundidos y la estancia hospitalaria.

Introduction An enhanced recovery after surgery (ERAS) protocol, recommends detection and optimization in treatment of preoperative anemia. Aim Evaluate if introducing a preoperative anemia correcting protocol in elective colorectal surgery, by means of an ERAS protocol (ERAS Group), reduces the need for transfusions with regards to a group of patients undergoing surgery for the same pathology before the protocol´s implementation (ERAS Group). Secondary objectives Evaluate length of stay, complications and readmission rates 30 days post discharge. Materials and Method We compared the first 121 consecutive patients who participated in an ERAS protocol with a preoperative correcting anemia protocol, with the previous 135 patients operated on before the protocol was introduced. A value of p < 0.05 was considered significant. Results The number of patients who needed a transfusion was reduced in the ERAS group (31 (22.96%) vs 15 (12.4%), p = 0.028) as was the total number of red blood cells transfused (3 ± 1.57 vs 1.8 ± 0.56, p < 0.001) with the use of the protocol. No statistical differences were noted in the patients who received oral iron although there was in those who received intravenous iron. (3 vs 31, p < 0.001). Overall length of stay was reduced (11 ± 3.8 vs 9.8 ± 3.7, p = 0.018), but no increase in complications or readmission rates at 30 days. Conclusions The implementation of an optimization in the treatment of preoperative anemia protocol in patients undergoing elective colorectal surgery following the ERAS guidelines, reduced the total number of patients who needed transfusions, the total concentrate of red blood cells transfused, and the length of stay.

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