Predictors of first-year postoperative complications after fixation of low-energy ankle fractures: A single-center, retrospective cohort study of 663 consecutive fractures. / [Artículo traducido] Predictores de las complicaciones postoperatorias en el primer año tras la fijación de fracturas de tobillo de baja energía. Estudio de cohortes retrospectivo sobre 663 fracturas intervenidas consecutivamente en un único centro.

INTRODUCTION: Rotational ankle fractures are common, have diverse personalities and affect both robust and fragile patients. Postoperative complications are frequent, creating a sizeable economic burden. The primary purpose of this study was to expand current knowledge on predictors of postoperative complications after low-energy ankle fracture fixation. MATERIALS AND METHODS: A retrospective single-center cohort study was completed of patients undergoing internal fixation OF low-energy ankle fractures. The primary outcome was first-year postoperative complications, classified as major (surgical) or minor (non-surgical). Data on patients, their injuries, and treatments were collected. To identify potential predictors of outcomes, logistic regression methods were used, with a backward-stepwise method used for model fitting. RESULTS: In total, 663 patients of median age 59 years were analysed. We found a high rate of complications (28.4%), with wound-healing issues and infections predominant. Overall, 14.8% had minor complications, while 13.6% required an unplanned reoperation. On multivariable analysis, the most consistent predictors of complications were older age (OR: 1.02 per year), longer operating time (3.32 per hour), and smoking (2.91). CONCLUSIONS: Older patients and smokers who sustain fractures requiring more complex surgery are at higher risk of postoperative complications.

How to create by your own a customized hip cement mega-spacer for a hip megaprosthesis two-stage revision surgery after oncologic limb-salvage surgery - Surgical technique and case report.

Managing chronic periprosthetic infections in patients who have undergone limb-salvage surgery following a malignant bone tumor with megaprosthesis often involves a two-stage revision surgery with the use of a cement-spacer. This paper show details the preparation of a self-made intramedullary metal-stabilized mega-cement spacer for patients needing a two-stage revision surgery due to infection after oncologic bone tumor resection and limb-salvage surgery with megaprosthesis and present two clinical cases treated with this technique. The report provides a practical surgical technique to create a cement hip mega-spacer using readily available tools in most orthopedic surgical settings.

Predictors of first-year postoperative complications after fixation of low-energy ankle fractures: A single-center, retrospective cohort study of 663 consecutive fractures.

INTRODUCTION: Rotational ankle fractures are common, have diverse personalities and affect both robust and fragile patients. Postoperative complications are frequent, creating a sizeable economic burden. The primary purpose of this study was to expand current knowledge on predictors of postoperative complications after low-energy ankle fracture fixation. MATERIALS AND METHODS: A retrospective single-center cohort study was completed of patients undergoing internal fixation OF low-energy ankle fractures. The primary outcome was first-year postoperative complications, classified as major (surgical) or minor (non-surgical). Data on patients, their injuries, and treatments were collected. To identify potential predictors of outcomes, logistic regression methods were used, with a backward-stepwise method used for model fitting. RESULTS: In total, 663 patients of median age 59 years were analyzed. We found a high rate of complications (28.4%), with wound-healing issues and infections predominant. Overall, 14.8% had minor complications, while 13.6% required an unplanned reoperation. On multivariable analysis, the most consistent predictors of complications were older age (OR=1.02 per year), longer operating time (3.32 per hour), and smoking (2.91). CONCLUSIONS: Older patients and smokers who sustain fractures requiring more complex surgery are at higher risk of postoperative complications.

Prevalence, causes, and clinical course of patients with surgical reintervention due to complications during cesarean section.

OBJECTIVE: The objective of the study is to identify the prevalence, causes, and clinical evolution of patients with surgical reintervention due to complications during cesarean section. MATERIALS AND METHODS: The file of the Toco-Surgical Unit of the Gynecological Obstetrics Hospital No. 3 of the National Medical Center "La Raza" Mexican Institute of Social Security was reviewed to know the total number of patients undergoing cesarean section from January to December 2019 and cases with reintervention due to complications during cesarean section were selected. Their general data, the cause of reintervention, stay in the intensive care unit (ICU), hospital stay, and mortality were studied. The data were analyzed with descriptive statistics using the statistical program SPSS version 20. RESULTS: It was found that 3371 patients underwent cesarean section, of which 1.60% (54 cases) underwent reoperation for the following reasons: Unpacking 27.79%, obstetric hemorrhage 20.37%, bleeding due to uterine atony 20.37%, hysterotomy commissure hematoma 18.52%, uterine infiltration 3.70%, vascular injury 3.70%, bladder injury 3.70%, and colonic injury 1.85%. The ICU stay was 3.79 ± 2.03 days, hospital stay was 13.67 ± 11.16 days, and mortality was 1.85%. CONCLUSION: The prevalence of reintervention was reduced, bleeding was the main cause, and the clinical evolution was satisfactory with low mortality.

OBJETIVO: Identificar la prevalencia, causas y evolución clínica de las pacientes con reintervención quirúrgica por complicaciones durante la cesárea. MATERIAL Y MÉTODOS: Se revisó el archivo de la Unidad de Toco-Quirúrgica del Hospital Ginecobstetricia No. 3 del Centro Médico Nacional "La Raza" Instituto Mexicano del Seguro Social para conocer el total de pacientes sometidas a cesárea desde enero hasta diciembre de 2019 y se seleccionaron los casos con reintervención por complicaciones durante la cesárea. Se estudiaron sus datos generales, la causa de reintervención, estancia en la Unidad de Cuidados Intensivos (UCI), estancia en hospital y la mortalidad. Los datos se analizaron con estadística descriptiva utilizando el programa estadístico SPSS versión 20. RESULTADOS: Se encontró que 3371 pacientes fueron sometidas a cesárea de las cuales 1.60% (54 casos) se reintervinieron por las siguientes causas: desempaquetamiento 27.79%, hemorragia obstétrica 20.37%, sangrado por atonía uterina 20.37%, hematoma de la comisura de histerotomía 18.52%, infiltración uterina 3.70%, lesión vascular 3.70%, lesión vesical 3.70% y lesión colónica 1.85%. La estancia en UCI fue 3.79 ± 2.03 días, estancia en hospital 13.67 ± 11.16 días y mortalidad 1.85%. CONCLUSIÓN: La prevalencia de reintervención fue reducida, el sangrado fue la principal causa y la evolución clínica resultó satisfactoria con baja mortalidad.

Tasa de afectación de los márgenes quirúrgicos tras la cirugía conservadora de mama y estimación de los costes directos / Rate of effect of surgical margins after breast conserving surgery and estimation of direct costs

Objetivo: Valoración de la tasa de reintervención en pacientes con márgenes de resección positivos tras cirugía conservadora inicial por cáncer de mama y estimación del coste para el hospital. Métodos: Estudio observacional de la tasa de afectación de los márgenes quirúrgicos de la pieza de resección tras la cirugía conservadora inicial en mujeres con carcinoma de mama invasor durante los años 2018-2019 en el H. U. de Tarragona Joan XXIII (HUTJ23), estableciendo en qué casos fue precisa la realización de una segunda intervención sobre la mama. Se estiman los costes directos añadidos que supone el segundo procedimiento quirúrgico y se compara con el gasto según los pesos establecidos por el Servicio Catalán de Salud según el nivel del hospital y los Grupos Relacionados por el Diagnóstico (GRD) fijados por el Sistema Nacional de Salud.Resultados: Se incluyó a 146 pacientes con diagnóstico de cáncer de mama invasor. Encontramos márgenes positivos tras la cirugía conservadora inicial en el 20,55% de los casos. Se reintervino al 19,17% del total de pacientes, generando las reintervenciones un coste de 129.696,089€, siendo 82.654,34€ para cirugía conservadora (3.757,01€ de media por paciente) y de 47.042,55€ en las mastectomías (6.720,36€ de media por paciente). Conclusiones: La afectación de los márgenes tras cirugía conservadora de la mama es sinónimo de reintervención, lo que supone una serie de costes directos que dependen del tipo de cirurgia y el régimen escogido (ambulatoria u hospitalizada). Es recomendable controlar los factores que inciden en los márgenes afectos para minimizar su impacto. (AU)

Objective: Assessment of the reoperation rate in patients with positive resection margins after initial breast-conserving surgery for breast cancer and estimation of the cost to the hospital. Method: 146 patients with diagnosis of invasive breast cancer were included, who were initially intervened with conservative surgery by the Gynecology and Obstetrics Service of Hospital Universitario de Tarragona Juan XXIII (HUTJ23) during the years 2018 and 2019. We calculated the rate of involvement of the surgical margins of the resection piece after initial conservative surgery, establishing in which cases it was necessary to carry out a second resection, estimating the added direct costs of the second surgical procedure, and comparing them with the costs established by the Catalan Health Service according to the level of the hospital and the Diagnosis-Related Groups (DRG) established by the National Health System. Results: The rate of positive margins after initial conservative surgery was 20.55% and 19.17% patients underwent reoperation, generating a total expense of € 129.696,89, € 82.654,34 in conservative surgeries (€ 3.757,01 on average per patient) and € 47.042,55 in mastectomies (€ 6.720,36 on average per patient).Conclusions: Margin involvement after breast-conserving surgery is synonymous for reoperation, this involves a series of direct costs. It is advisable to control the factors related to affected margins to minimize their impact. (AU)

Rate of effect of surgical margins after breast conserving surgery and estimation of direct costs.

OBJECTIVE: Assessment of the reoperation rate in patients with positive resection margins after initial breast-conserving surgery for breast cancer and estimation of the cost to the hospital. METHOD: 146 patients with diagnosis of invasive breast cancer were included, who were initially intervened with conservative surgery by the Gynecology and Obstetrics Service of Hospital Universitario de Tarragona Juan XXIII (HUTJ23) during the years 2018 and 2019. We calculated the rate of involvement of the surgical margins of the resection piece after initial conservative surgery, establishing in which cases it was necessary to carry out a second resection, estimating the added direct costs of the second surgical procedure, and comparing them with the costs established by the Catalan Health Service according to the level of the hospital and the Diagnosis-Related Groups (DRG) established by the National Health System. RESULTS: The rate of positive margins after initial conservative surgery was 20.55% and 19.17% patients underwent reoperation, generating a total expense of € 129,696.89, € 82,654.34 in conservative surgeries (€ 3757.01 on average per patient) and € 47,042.55 in mastectomies (€ 6720.36 on average per patient). CONCLUSIONS: Margin involvement after breast-conserving surgery is synonymous for reoperation, this involves a series of direct costs. It is advisable to control the factors related to affected margins to minimize their impact.

Reintervenciones tras apendicectomía en niños. Estudio multicéntrico / Re-interventions following appendectomy in children: a multicenter study

Introducción: La apendicitis aguda es la causa más frecuente deabdomen agudo en niños. El objetivo de este trabajo es estudiar lascausas, abordaje y resultados de las complicaciones que requieren in-tervención quirúrgica después de la apendicectomía.Material y métodos: Estudio retrospectivo de las apendicectomíasrealizadas en 3 centros de tercer nivel entre 2015-2019. Se recogieronlas complicaciones, causas y número de reintervenciones, intervalo entreambas cirugías, técnica empleada, hallazgos operatorios según la Clasi-ficación de la American Association for the Surgery of Trauma (AAST)en la apendicectomía inicial y tiempo de ingreso.Resultados: Se intervinieron 3.698 apendicitis, un 76,7% por víalaparoscópica, encontrando un 37,2% evolucionadas (grado II-V de laclasificación AAST). El tiempo medio quirúrgico fue de 50,4 minutos(laparoscopia 49,8 ± 20,1 vs. laparotomía 49,9 ± 20,1, p > 0,05), superioren aquellos pacientes que requirieron reintervención (68,6 ± 27,2 vs.49,1 ± 19,3, p < 0,001).Se realizaron 76 reintervenciones (2,05%). Las causas fueron: infec-ción postoperatoria (n = 46), obstrucción intestinal (n = 20), dehiscencia(n = 4) y otras (n = 6). El abordaje inicial no influyó en el riesgo dereintervención (laparotomía o laparoscopia, OR 1,044, IC 95% 0,57-1,9),pero sí el grado de evolución de la apendicitis (7,8% evolucionadas vs.0,7% incipientes, OR 12,52, IC 95% 6,18-25,3).Hubo una tendencia a reintervenir por el mismo abordaje que laapendicectomía, esto ocurrió en un 72,2% de las apendicectomías lapa-roscópicas y en un 67,7% de las apendicectomías abiertas. El abordajemínimamente invasivo (50/76) fue más frecuente que la laparotomía(27 laparoscopias y 23 drenajes ecoguiados frente a 26 laparotomías)(p < 0,05). El 55% de los pacientes obstruidos se reintervinieron porvía abierta (p > 0,05).

Introduction: Acute appendicitis is the most frequent cause ofacute abdomen in children. The objective of this study was to analyzethe causes, approach, and results of complications requiring surgeryfollowing appendectomy.Materials and methods: A retrospective study of the appendecto-mies conducted in three third-level institutions from 2015 to 2019 wascarried out. Complications, causes, and number of re-interventions, timefrom one surgery to another, surgical technique used, operative findingsat baseline appendectomy according to the American Association forthe Surgery of Trauma (AAST) classification, and hospital stay werecollected.Results: 3,698 appendicitis cases underwent surgery, 76.7%of which laparoscopically, with 37.2% being advanced (grades II-Vof the AAST classification). Mean operating time was 50.4 min-utes (49.8 ± 20.1 for laparoscopy vs. 49.9 ± 20.1 for open surgery,p > 0.05), and longer in patients requiring re-intervention (68.6 ± 27.2vs. 49.1 ± 19.3, p < 0.001).76 re-interventions (2.05%) were carried out. The causes includedpostoperative infection (n = 46), intestinal obstruction (n = 20), dehis-cence (n = 4), and others (n = 6). Re-intervention risk was not impactedby the baseline approach used (open surgery or laparoscopy, OR: 1.044,95% CI: 0.57-1.9), but it was by appendicitis progression (7.8% ad-vanced vs. 0.7% incipient, OR: 12.52, 95% CI: 6.18-25.3).There was a tendency to use the same approach both at baseline ap-pendectomy and re-intervention. This occurred in 72.2% of laparoscopicappendectomies, and in 67.7% of open appendectomies. The minimallyinvasive approach (50/76) was more frequent than the open one (27laparoscopies and 23 ultrasound-guided drainages vs. 26 open surger-ies) (p < 0.05). 55% of obstruction patients underwent re-interventionthrough open surgery (p > 0.05).

Perfil clínico, quirúrgico y epidemiológico de pacientes reintervenidos / Clinical, Surgical and Epidemiological Profile of Reintervened Patients

Introducción: Los pacientes reintervenidos quirúrgicamente no se han caracterizado en el Hospital "Dr. Ambrosio Grillo Portuondo" de Santiago de Cuba. Objetivo: Caracterizar a los pacientes reintervenidos quirúrgicamente según variables de interés. Métodos: Se realizó un estudio transversal, descriptivo y retrospectivo de los pacientes reintervenidos en el citado hospital durante el trienio 2018-2020. La muestra fue de 6279 enfermos. Se analizaron variables epidemiológicas y clínicas quirúrgicas de interés. Los datos se resumieron mediante análisis de frecuencias. Resultados: La tasa de reintervenciones fue de 1,7 por ciento respecto al total de operaciones mayores y el 1,6 por ciento correspondió a la cirugía abdominal. Predominó el grupo de edades entre 46 y 60 años y el sexo femenino con 37,8 por ciento y 55 por ciento, respectivamente. La operación inicial fue realizada de urgencia en el 91 por ciento de los casos por apendicitis aguda y oclusión intestinal (21,7 por ciento y 18 por ciento). El 70,2 por ciento de la casuística se reintervino 4 días después por absceso intrabdominal (39,6 por ciento) y dehiscencia de sutura anastomótica (20,7 por ciento). La relaparotomía a demanda (98,1 por ciento) fue la mayormente efectuada con 18 por ciento de aplicación de la técnica de abdomen abierto. La mortalidad fue de 28 por ciento y la causa de muerte fue el choque séptico en un 80,6 por ciento. Conclusiones: Los pacientes reintervenidos constituyeron un problema de salud hospitalario que impactó en el perfil de morbilidad y mortalidad de la cirugía abdominal(AU)

Introduction: Surgical reintervention patients have not been characterized at Dr. Ambrosio Grillo Portuondo Hospital of Santiago de Cuba. Objective: To characterize the surgically intervened patients according to variables of interest. Methods: A cross-sectional, descriptive and retrospective study was carried out with the patients surgically reintervened in the aforementioned hospital during the 2018-2020 triennium. The sample consisted of 6279 patients. Epidemiological and surgical-clinic variables of interest were analyzed. Data were summarized by frequency analysis. Results: The reintervention rate was 1.7 percent compared to the total number of major operations, while 1.6 percent corresponded to abdominal surgery. There was a predominance of the age group 46-60 years and the female sex predominated, accounting for 37.8 percent and 55 percent, respectively. The initial operation was performed urgently in 91 percent of the cases, due to acute appendicitis and intestinal occlusion, accounting for 21.7 percent and 18 percent, respectively. 70.2 percent of the cases were reintervened four days later for intraabdominal abscess (39.6 percent) and anastomotic suture dehiscence (20.7 percent). On-demand relaparotomy (98.1 percent) was the most performed procedure, with 18 percent of application of the open-abdomen technique. Mortality represented 28 percent of cases, while the most frequent cause of death was septic shock, accounting for 80.6 percent of deaths. Conclusions: The reintervened patients constituted a hospital health concern that impacted on the morbidity and mortality profile of abdominal surgery(AU)

Rate of effect of surgical margins after breast conserving surgery and estimation of direct costs. / Tasa de afectación de los márgenes quirúrgicos tras la cirugía conservadora de mama y estimación de los costes directos.

OBJECTIVE: Assessment of the reoperation rate in patients with positive resection margins after initial breast-conserving surgery for breast cancer and estimation of the cost to the hospital. METHOD: 146 patients with diagnosis of invasive breast cancer were included, who were initially intervened with conservative surgery by the Gynecology and Obstetrics Service of Hospital Universitario de Tarragona Juan XXIII (HUTJ23) during the years 2018 and 2019. We calculated the rate of involvement of the surgical margins of the resection piece after initial conservative surgery, establishing in which cases it was necessary to carry out a second resection, estimating the added direct costs of the second surgical procedure, and comparing them with the costs established by the Catalan Health Service according to the level of the hospital and the Diagnosis-Related Groups (DRG) established by the National Health System. RESULTS: The rate of positive margins after initial conservative surgery was 20.55% and 19.17% patients underwent reoperation, generating a total expense of € 129.696,89, € 82.654,34 in conservative surgeries (€ 3.757,01 on average per patient) and € 47.042,55 in mastectomies (€ 6.720,36 on average per patient). CONCLUSIONS: Margin involvement after breast-conserving surgery is synonymous for reoperation, this involves a series of direct costs. It is advisable to control the factors related to affected margins to minimize their impact.

Factores asociados a sepsis abdominal en pacientes con laparotomía por trauma abdominal penetrante / Factors associated with abdominal sepsis in patients with laparotomy due to penetrating abdominal trauma

Introducción. Los pacientes que sufren algún tipo de trauma tienen una presentación clínica muy variable, por lo que se han diseñado pautas diagnósticas y terapéuticas con el fin de disminuir el número de laparotomías innecesarias. Las herramientas actuales para la predicción de infección intraabdominal, permiten intervenciones tempranas en los pacientes con alto riesgo y un mejor seguimiento clínico posoperatorio. El objetivo de este trabajo fue realizar un estudio de los factores asociados al desarrollo de las infecciones intraabdominales o sepsis abdominal posterior a laparotomía por trauma penetrante. Métodos. Estudio descriptivo de una cohorte de pacientes atendidos por trauma abdominal penetrante en el Hospital Universitario de Santander, Bucaramanga, Colombia, entre enero de 2016 y diciembre de 2018. El análisis de datos se realizó en el software Stata®, versión 14 (StataCorp. LP, College Station, TX, USA). Resultados. Se incluyeron 174 pacientes con edad media de 32 años, el 10,9 % (n=19) de los pacientes presentaron sepsis abdominal, de este grupo el 94,7 % (n=18) requirieron reintervención quirúrgica (p < 0,0001). La mortalidad general del grupo fue de 5,1 % (n=9), sin diferencia significativa entre los pacientes con o sin sepsis abdominal. Discusión. Dentro de los diferentes desenlaces asociados a laparotomía por trauma, se describe la sepsis abdominal como una de las complicaciones que genera morbilidad significativa, con aumento en la estancia hospitalaria, necesidad de reintervención, aumento en los costos de atención y disminución en la calidad de vida, factores en concordancia con los hallazgos del presente estudio

Introduction. Patients who suffer some type of trauma have a highly variable presentation, which is why diagnostic and therapeutic guidelines have been designed in order to reduce the number of unnecessary laparotomies. Current tools for the prediction of intra-abdominal infections allow early interventions in high-risk patients and a better postoperative clinical follow-up. The objective of this article was to study the factors associated with the development of intra-abdominal infections or abdominal sepsis after laparotomy due to penetrating trauma. Methods. Descriptive study of a cohort of patients treated for penetrating abdominal trauma at the Santander University Hospital, Bucaramanga, Colombia, between January 2016 and December 2018. Data analysis was performed using Stata® software, version 14 (Stata corp. LP, College Station, TX, USA). Results. A total of 174 patients with a mean age of 32 years were included, 10.9% (n=19) of the patients presented abdominal sepsis, of this group 94.7% (n=18) had a surgical reintervention (p < 0.0001). The overall mortality of the group was 5.1% (n=9) with no significant difference between patients with or without abdominal sepsis. Discussion. Among the different outcomes associated with laparotomy due to trauma, abdominal sepsis is described as one of the complications that generates significant morbidity, with an increase in hospital stay, the need for reoperation, an increase in care costs and a decrease in quality of life, factors in agreement with the findings of the present study

Manejo de la ruptura hepática espontánea en el síndrome de HELLP / Management of spontaneous hepatic rupture in HELLP syndrome

Introducción. El síndrome de HELLP es una variante grave de la preeclampsia, con una baja incidencia, entre el 0,5-0,9 % de todos los embarazos. La ruptura hepática espontánea en el embarazo es infrecuente, presenta una alta mortalidad, y se ha relacionado con hemangiomas hepáticos, coriocarcinoma y síndrome de HELLP. Caso clínico. Mujer de 29 años con embarazo de 34,3 semanas, con actividad uterina progresiva, sufrimiento fetal agudo y hallazgos compatibles con síndrome de HELLP. Se practicó cesárea de urgencia encontrando hemoperitoneo y ruptura hepática del lóbulo derecho, por lo que se realizó empaquetamiento abdominal y posterior reintervención quirúrgica. Discusión. La ruptura hepática espontánea en el embarazo es una entidad infrecuente y potencialmente mortal. Es esencial un alto nivel de sospecha para realizar el diagnóstico y la rápida intervención. Requiere un manejo multidisciplinario para un resultado exitoso. Se han descrito múltiples tratamientos que dependen de las manifestaciones clínicas y extensión de la lesión, pero es claro que la laparotomía primaria y el taponamiento constituyen la mejor elección ante el hallazgo intraoperatorio.

Introduction. HELLP syndrome is a severe variant of preeclampsia with a low incidence, between 0.5-0.9% of all pregnancies. Spontaneous hepatic rupture in pregnancy is rare, has a high mortality, and has been associated with hepatic hemangiomas, choriocarcinoma, and HELLP syndrome. Clinical case. 29-year-old woman with a 34.3-week pregnancy, with progressive uterine activity and acute fetal distress and findings compatible with HELLP syndrome. An emergency cesarean section was performed, finding hemoperitoneum and hepatic rupture of the right lobe, performing abdominal packing and subsequent surgical reoperation. Discussion. Spontaneous liver rupture in pregnancy is a rare and potentially fatal entity. A high level of suspicion is essential to make the diagnosis and prompt intervention. It requires multidisciplinary management for a successful outcome. Multiple treatments have been described that depend on the clinical manifestations and extent of the lesion, but it is clear that primary laparotomy and packing constitute the best choice before the intraoperative finding.

Reintervención Quirúrgica No Programada: Un análisis de calidad de la atención / Unplanned Return to the Operating Room: An analysis of the quality of the health care

INTRODUCCIÓN: Una Reintervención Quirúrgica No Programada (RQNP) es aquella cirugía no planificada que se rea liza durante los primeros 30 días como consecuencia de una cirugía primaria. En Chile, el análisis y la tasa de RQNP son un indicador de calidad. OBJETIVO: describir y analizar las RQNP en pediatría. PACIENTES Y MÉTODO: Estudio observacional de corte transversal. Se revisaron los registros clínicos de los pacientes pediátricos sometidos a RQNP en el Hospital Carlos Van Buren en un período de 5 años. Se analizó su incidencia, indicaciones y causas que se clasificaron en 1) causas atribuibles a la técnica quirúrgica; 2) causas relacionadas al tratamiento; 3) patología propia del paciente y 4) otras causas. Se analizó además el cumplimiento de reuniones de análisis de RQNP. RESULTADOS: Se efectuaron 23 RQNP de un total de 5.503 cirugías en 5 años (0,42%). Hubo 11 RQNP de 3.434 cirugías electivas realizadas y 12 RQNP de 2069 cirugías de urgencia realizadas (0,32% v/s 0,58% respectivamente, p = NS). Hubo 2 RQNP en los 82 recién nacidos operados en el período (2,43%, p < 0,01). En todos los casos se realizaron reuniones de análisis de RQNP. En 18 de los 23 pacientes sometidos a RQNP se encontró una causa atribuible a la técnica o planificación quirúrgica. CONCLUSIONES: Las RQNP son poco frecuentes en pediatría excepto en el período neonatal. Se da total cumplimiento a la normativa nacional de reunión de análisis luego de una RQNP que indican que las causas son mayoritariamente atribuibles a la técnica o planificación quirúrgica.

INTRODUCTION: An Unplanned Return to the Operating Room (UROR) is an unplanned surgery performed during the first 30 days as a result of primary surgery. In Chile, the analysis and the UROR rate are quality indicators. OBJECTIVE: to describe and analyze UROR in a pediatrics. PATIENTS AND METHOD: Observa tional cross-sectional study. The clinical records of pediatric patients undergoing UROR at the Hos pital Carlos Van Buren over 5 years were reviewed. The incidence, indications, and causes of UROR were analyzed. The causes of UROR were classified as 1) causes attributable to surgical technique, 2) treatment-related causes, 3) the patient pathology, and 4) other causes. In addition, the observance of the case review meetings after an UROR was analyzed. RESULTS: 23 UROR out of 5,503 surgeries were performed in 5 years, (0.42%). There were 11 UROR out of 3,434 elective surgeries and 12 UROR out of 2,069 emergency ones (0.32% v/s 0.58% respectively, p=NS). There were 2 UROR out of 82 surgeries in newborns, (2.43%, p<0.01). After every UROR, a case review meeting was held. In 18 out of the 23 patients who underwent UROR (78%), the cause was attributable to the surgical technique or planning. CONCLUSIONS: UROR is rare in pediatric surgery, except for the newborn period. Case review meetings are held after every UROR case, according to the national guidelines. The causes of UROR are mostly attributable to the surgical technique or planning.

Radiofrequency Ablation of the Surgical Bed After Lumpectomy in Breast-conserving Surgery. / Ablación por radiofrecuencia del lecho quirúrgico tras tumorectomía en cirugía conservadora del cáncer de mama.

INTRODUCTION: Obtaining tumor-free margins during breast conservative surgery (BCS) is essential to avoid local recurrence and frequently requires reoperation. Radiofrequency ablation (RFA) of surgical margins after lumpectomy seems to be a helpful tool to avoid reoperations, but evidence is insufficient. This study analyzes the efficacy and safety of RFA after BCS to obtain free surgical margins. METHODS: Non-randomized experimental study performed in an intervention group of 40 patients assigned to receive RFA after lumpectomy and successive resection of surgical margins, and a historical control group of 40 patients treated with BCS alone. In the intervention group, the RFA effect on tumor cell viability in the surgical margins was analyzed. Also, reoperation rate, complications and cosmetic results were compared in both groups. RESULTS: A total of 240 excised margins were analyzed after RFA, obtaining a high number of tumor-free margins. Compared to the control group, the reoperation rate decreased significantly (0% vs 12%; P=.02), without differences in terms of postoperative complications (10% vs 5%; P=.67) or cosmetic results (excellent or good 92.5% vs 95%; P=.3). CONCLUSIONS: RFA after lumpectomy is a reliable, safe and successful procedure to obtain tumor-free surgical margins and to decrease the reoperation rate without affecting complications or compromising cosmetic results.

Impact of unplanned resection and re-excision of a soft tissue sarcoma on prognosis. / Impacto de la resección no planificada y la reintervención de sarcomas de partes blandas en su pronóstico.

INTRODUCTION: Up to 40% of all initial operations for soft tissue sarcoma (STS) are unplanned, which would leave residual macroscopic tumor in more than 50% of the cases. The effect this has on local recurrence rate, metastases rate and survival has never been fully established, due to the lack of randomized studies. METHODS: Retrospective review of patients with STS treated in our unit between January 2001-January 2016. We classified them whether they had been treated by initial planned or unplanned operation. Outcomes were compared in both groups globally and stage-matched. Endpoints were local recurrence and distant metastases. RESULTS: Twenty-three patients of STS underwent a planned excision and 16 an unplanned excision, 13 of them underwent further re-excision. 40% of patients with planned excision had an advanced stage in regard to the unplanned excision group which presented earlier stages. 77% of patients with unplanned excision had residual tumor identified after surgical re-excision. Local recurrence rate in the unplanned excision group was considerably higher 73,5% vs. 43,8%. Metastases rate was lower in planned excision group, 45,5% vs 56,3% (P > .05). The recurrence pattern in the unplanned excision group was unstable, with worse outcomes in earlier stages. CONCLUSION: The unplanned excision of a soft tissue sarcoma may compromise disease local control, with higher rates of local recurrence and metastases, and worse functional out- comes, despite further oncological treatment. We need to recognize the clinical features for malignancy risk in soft tissue lumps for a safe diagnosis to avoid inadequate resections.

Determinants of long-term outcome of repaired pulmonary valve stenosis.

INTRODUCTION AND OBJECTIVES: Although pulmonary valve stenosis (PVS) is considered a low risk congenital heart disease, there have been reports of complications and the need for reintervention throughout follow-up. The aims of this study were to evaluate the long-term outcome of repaired PVS and to identify predictors of cardiovascular complications and reintervention. METHODS: We studied 158 adult patients with repaired PVS (repair procedures performed from 1957 to 2010) receiving active follow-up in a tertiary referral center. RESULTS: A total of 95 patients (60%) received surgical treatment, and 63 patients (40%) received percutaneous pulmonary balloon valvuloplasty. At the end of follow-up (27 years, IQR, 20-33 years), most patients (n=134, 84.8%) were in New York Heart Association functional class I, but 61 patients (38.6%) required a reintervention, mainly pulmonary valve replacement (17.7%, n=28), and 19 patients (12%) had at least one cardiovascular complication: 13 (8.2%) supraventricular arrhythmias, 6 (3.8%) heart failure, 5 (3.2%) stroke, 1 (0.6%) death, 1 (0.6%) thromboembolism, and 1 (0.6%) ventricular arrhythmia. Multivariate analysis showed that age at PVS repair (HR, 1.08; 95%CI, 1.04-1.12; P <.001) and the presence of cyanosis before PVS repair (HR, 5.23; 95%CI, 1.99-13.78; P=.001) were independent predictors for cardiovascular complications. CONCLUSIONS: Good long-term outcome can be expected after PVS repair, but complications and the need for reintervention may appear. Older age and the presence of cyanosis at PVS repair emerged as predictors of cardiovascular complications and identified a population that may merit stricter control.

Direct-to-implant breast reconstruction after neoadjuvant chemotherapy: A safe option? / Reconstrucción inmediata mediante implante directo tras quimioterapia neoadyuvante. ¿Es una práctica segura?

INTRODUCTION: Immediate reconstruction (IBR) after mastectomy in patients who have received neoadjuvant chemotherapy (NACT) remains controversial. The aim of this study is to analyze and compare oncological results as well as complication and reoperation rates in patients undergoing NACT and a control group. METHODS: Retrospective observational case-control study of patients with breast cancer who underwent bilateral mastectomy and direct-to-implant IBR (BMIBR) from 2000-2016. The group that received NACT was matched 1:5 to patients without NACT (Control group). We evaluated differences between groups using the χ2 or Fisher test (qualitative variables), Mann-Whitney U or Student's t-test (quantitative variables). The survival analysis was performed using Kaplan-Meier curves and log-rank test (SPSS 22.0). RESULTS: The study included a total of 171 patients with BMIBR: 62 patients (36.3%) after NACT and 109 patients (63.7%) in the control group without NACT. Median follow-up was 52.0 (IQR: 23.0-94.0) months. In both groups, the indication for BMIBR was patient choice (32.7%). There were no statistically significant differences between groups in terms of complication rate (24.2% in the NACT group and 19.3% in the control group [P=.44]), but differences in oncological results were found. Patients in the NACT Group had three times more risk of recurrence at a given time than patients in the control group (3.009 [1.349-6.713]) according to the univariate analysis. CONCLUSIONS: Direct-to-implant IBR after skin-sparing mastectomy is a viable option for breast cancer patients undergoing NACT.

Reintervenciones por fallo de la cirugía antirreflujo / Reinterventions for Failed Antireflux Surgery

RESUMEN Introducción: En la actualidad, la fundoplicatura laparoscópica se considera el tratamiento de elección para la enfermedad por reflujo gastroesofágico con resultados excelentes en más del 90 por ciento de los pacientes. Sin embargo, a pesar de estos resultados, el 30 % de los pacientes presentan persistencia de los síntomas y del 3 por ciento al 10 por ciento requieren reintervención por fallo de la cirugía antirreflujo. Objetivo: Describir las causas del fracaso de la cirugía antirreflujo y las técnicas realizadas en la reintervención. Método: Se realizó un estudio descriptivo, retrospectivo y longitudinal, de una serie de pacientes a los cuales se les realizo cirugía antirreflujo en el Centro Nacional de Cirugía de Mínimo Acceso desde enero de 1994 hasta diciembre de 2016. Las variables analizadas fueron: reintervenciones y sus causas, tratamiento quirúrgico, morbilidad y el índice de conversión. Resultados: De un total de 1 550 pacientes operados, 37 (2,3 por ciento) fueron reintervenidos. Las causas más frecuentes de reintervención fueron la recidiva de los síntomas y la presencia de disfagia. La herniación de la fundoplicatura fue el hallazgo transoperatorio más frecuente. El índice de conversión fue bajo y no hubo fallecidos en las reintervenciones. La morbilidad triplicó la del total de la serie, así como la estadía hospitalaria. Conclusiones: Las reintervenciones por fallo de la cirugía antirreflujo resultan de gran complejidad pues aumentan considerablemente la morbilidad y la estadía hospitalaria. Debe realizarse en centros que acumulen una alta experiencia en estas técnicas(AU)

ABSTRACT Introduction: Nowadays, laparoscopic fundoplication is considered the treatment of choice for gastroesophageal reflux disease, showing excellent results in more than 90 percent of patients. However, despite these results, 30 percent of patients present with persistent symptoms, while 3 percent to 10 percent require reintervention for failed antireflux surgery. Objective: To describe the causes of failed antireflux surgery and the techniques performed in the reintervention. Method: A descriptive, retrospective and longitudinal study was conducted with a series of patients who underwent antireflux surgery at the National Center for Minimally Access Surgery, from January 1994 to December 2016. The variables analyzed were reinterventions and their causes, surgical treatment, morbidity and the conversion rate. Results: From among 1550 patients operated on, 37 (2.3 percent) were reintervened. The most frequent causes of reintervention were the recurrence of symptoms and the occurrence of dysphagia. The fundoplication herniation was the most frequent transoperative finding. The conversion rate was low and there were no deaths in the reinterventions. The morbidity tripled that of the total of the series, as well as hospital stay. Conclusions: Reinterventions for failed antireflux surgery are very complex, since they increase morbidity and hospital stay considerably. It must be performed in centers that accumulate a high experience in these techniques(AU)

El dilema de las reintervenciones quirúrgicas / The dilema of surgical reinterventions

Introducción: En la actualidad, la diversidad de criterios relacionados con las reintervenciones quirúrgicas constituyen un verdadero problema científico, por cuanto, resulta de gran importancia profundizar en torno a los principales aspectos cognoscitivos relacionados con este tema a fin de elevar la calidad asistencial y, con esa premisa, el índice de supervivencia, sobre todo en la población envejecida como grupo vulnerable. Objetivos: Identificar los factores que permitan reconocer las condiciones modificables que disminuyan las complicaciones y fallecimientos de los enfermos tributarios de un nuevo tratamiento quirúrgico para salir adelante y sobrevivir. Métodos: Revisión digital de publicaciones actualizadas en español e inglés en bases de datos: Google, Redalyc, PubMed, Medline, Lilacs, Elsevier. Resultados: Las complicaciones posquirúrgicas y las que requieren una reintervención en particular son de origen multifactorial. No existe una definición y una clasificación estandarizada de las complicaciones posquirúrgicas para notificarlas. Las más utilizadas son las objetivas de Clavien Dindo y Accordeon, basadas en la estratificación del tratamiento requerido, el riesgo y gravedad. Conclusiones: A pesar de que el gran avance tecnológico actual en los métodos diagnósticos y terapéuticos ha permitido que los pacientes con complicaciones posquirúrgicas sean reintervenidos con mayor seguridad, la morbilidad y la mortalidad a causa de estas continúan elevadas(AU)

Introduction: Nowadays, the diverse criteria related to surgical reinterventions are a real scientific problem since it is very important to delve into the main cognitive aspects associated to this topic in order to raise the quality of medical assistance and thus the survival index in the old population as a vulnerable group. Objectives: To identify the factors that allow recognizing the modifiable conditions that lead to less complications and deaths of patients undergoing a new surgical treatment. Methods: Search of updated publications in English and Spanish made in Goggle, Redalyc, PubMed, Medline, Lilacs and Elsevier databases. Results: The postsurgical complications and those requiring surgical reintervention in particular are of multifactoral origin. There is neither one single definition nor one standardized classification of the postsurgical complications to notify them. The most used objective classifications are Claven Dindo and Accordeon, based on the stratification of the required treatment, the risk and the severity. Conclusions: In spite of the fact that the great technological advances in the diagnostic and therapeutic methods have allowed the reoperation of complicated patients with higher margin of safety, morbidity and mortality caused by such complications are still high(AU)

El dilema de las reintervenciones quirúrgicas / The dilema of surgical reinterventions

RESUMEN Introducción: En la actualidad, la diversidad de criterios relacionados con las reintervenciones quirúrgicas constituyen un verdadero problema científico, por cuanto, resulta de gran importancia profundizar en torno a los principales aspectos cognoscitivos relacionados con este tema a fin de elevar la calidad asistencial y, con esa premisa, el índice de supervivencia, sobre todo en la población envejecida como grupo vulnerable. Objetivos: Identificar los factores que permitan reconocer las condiciones modificables que disminuyan las complicaciones y fallecimientos de los enfermos tributarios de un nuevo tratamiento quirúrgico para salir adelante y sobrevivir. Métodos: Revisión digital de publicaciones actualizadas en español e inglés en bases de datos: Google, Redalyc, PubMed, Medline, Lilacs, Elsevier. Resultados: Las complicaciones posquirúrgicas y las que requieren una reintervención en particular son de origen multifactorial. No existe una definición y una clasificación estandarizada de las complicaciones posquirúrgicas para notificarlas. Las más utilizadas son las objetivas de Clavien Dindo y Accordeon, basadas en la estratificación del tratamiento requerido, el riesgo y gravedad. Conclusiones: A pesar de que el gran avance tecnológico actual en los métodos diagnósticos y terapéuticos ha permitido que los pacientes con complicaciones posquirúrgicas sean reintervenidos con mayor seguridad, la morbilidad y la mortalidad a causa de estas continúan elevadas(AU)

ABSTRACT Introduction: Nowadays, the diverse criteria related to surgical reinterventions are a real scientific problem since it is very important to delve into the main cognitive aspects associated to this topic in order to raise the quality of medical assistance and thus the survival index in the old population as a vulnerable group. Objectives: To identify the factors that allow recognizing the modifiable conditions that lead to less complications and deaths of patients undergoing a new surgical treatment. Methods: Search of updated publications in English and Spanish made in Goggle, Redalyc, PubMed, Medline, Lilacs and Elsevier databases. Results: The postsurgical complications and those requiring surgical reintervention in particular are of multifactoral origin. There is neither one single definition nor one standardized classification of the postsurgical complications to notify them. The most used objective classifications are Claven Dindo and Accordeon, based on the stratification of the required treatment, the risk and the severity. Conclusions: In spite of the fact that the great technological advances in the diagnostic and therapeutic methods have allowed the reoperation of complicated patients with higher margin of safety, morbidity and mortality caused by such complications are still high(AU)

Reintervenciones por fracaso de la miotomía de Heller por acalasia esofágica / Reintervention after failed Heller myotomy for esophageal achalasia

Introducción: la cardiomiotomía de Heller asociada al proceder antirreflujo descrito por Dor constituye el tratamiento de elección en los pacientes con acalasia esofágica; sin embargo, las causas del fracaso del tratamiento aún son controversiales. Objetivo: describir las causas del fracaso de la miotomía de Heller en pacientes operados por acalasia esofágica y la evolución clínica de los pacientes reintervenidos. Métodos: se realizó un estudio descriptivo, retrospectivo y longitudinal de una serie de pacientes reintervenidos por fracaso de la miotomía de Heller en el Centro Nacional de Cirugía de Mínimo Acceso desde enero de 2010 hasta diciembre de 2016. Resultados: se les realizó miotomía de Heller a 253 pacientes con diagnóstico de acalasia esofágica. De ellos, 7 (2,7 por ciento) fueron reintervenidos por recurrencia de los síntomas, 4 (1,5 por ciento) fueron operados inicialmente en la institución y el resto fueron remitidos de otras instituciones del país. La edad media fue de 41 ± 15 años (rango 20-59). Los síntomas más frecuentes fueron la disfagia posoperatoria y la pérdida de peso (100 por ciento). El tiempo de recurrencia de los síntomas después de la primera operación fue de 6-12 meses en 4 (57 por ciento), de 12 a 18 meses en 1 (16 por ciento) y de 18 a 24 en 2 (33 por ciento) pacientes. Conclusiones: la miotomía incompleta fue la causa principal de reintervención. La remiotomia laparoscópica con o sin fundoplicatura fue la técnica quirúrgica de elección para estos pacientes los cuales tuvieron una evolución clínica excelente o buena en el posoperatorio(AU)

Introduction: Heller's cardiomyotomy associated with the antireflux procedure described by Dor is the treatment of choice in patients with esophageal achalasia. However, the causes of treatment failure are still controversial. Objective: To describe the causes of failure of Heller's myotomy in patients operated for esophageal achalasia and the clinical progress of patients who required another surgery. Methods: A descriptive, retrospective and longitudinal study was performed in a series of patients who required another surgery due to failed Heller's myotomy at the National Center for Minimally Invasive Surgery from January 2010 to December 2016. Results: Heller's myotomy was performed in 253 patients diagnosed with esophageal achalasia. Among these patients, 7 (2.7 percent) required another surgery due to the relapse of symptoms, 4 (1.5 percent) were initially operated at the institution, and the rest were referred from other institutions in the country. The average age was 41±15 years (range 20-59). The most frequent symptoms were postoperative dysphagia and weight loss (100 percent). The time of symptoms relapse after the first surgery was 6-12 months in 4 patients (57 percent), 12-18 months in 1 (16 percent) and 18-24 months in 2 (33 percent) patients. Conclusions: Incomplete myotomy was the main cause of reintervention, laparoscopic myotomy with or without fundoplication being the surgical technique of choice for these patients, who had an excellent or good postoperative clinical evolution(AU)