The effects of positive end-expiratory pressure (PEEP) application on optic nerve sheath diameter in patients undergoing laparoscopic cholecystectomy: a randomized trial

Abstract Background: Positive end-expiratory pressure (PEEP) can overcome respiratory changes that occur during pneumoperitoneum application in laparoscopic procedures, but it can also increase intracranial pressure. We investigated PEEP vs. no PEEP application on ultrasound measurement of optic nerve sheath diameter (indirect measure of increased intracranial pressure) in laparoscopic cholecystectomy. Methods: Eighty ASA I-II patients aged between 18 and 60 years scheduled for elective laparoscopic cholecystectomy were included. The study was registered in the Australian New Zealand Clinical Trials (ACTRN12618000771257). Patients were randomly divided into either Group C (control, PEEP not applied), or Group P (PEEP applied at 10 cmH20). Optic nerve sheath diameter, hemodynamic, and respiratory parameters were recorded at six different time points. Ocular ultrasonography was used to measure optic nerve sheath diameter. Results: Peak pressure (PPeak) values were significantly higher in Group P after application of PEEP (p = 0.012). Mean respiratory rate was higher in Group C at all time points after application of pneumoperitoneum (p < 0.05). The mean values of optic nerve sheath diameters measured at all time points were similar between the groups (p > 0.05). The pulmonary dynamic compliance value was significantly higher in group P as long as PEEP was applied (p = 0.001). Conclusions: During laparoscopic cholecystectomy, application of 10 cmH2O PEEP did not induce a significant change in optic nerve sheath diameter (indirect indicator of intracranial pressure) compared to no PEEP application. It would appear that PEEP can be used safely to correct

Cáncer incidental de vesícula biliar tras Colecistectomía Laparoscópica / Incidental gallbladder cancer after Laparoscopy Cholecystectomy

El carcinoma de vesícula biliar es una entidad poco frecuente. El diagnóstico precoz de esta neoplasia es difícil, ya que sus síntomas son muy inespecíficos y muchas veces estes se realiza de manera tardía cuando el enfermo posee una enfermedad avanzada y solo para mitigar los síntomas. Con el crecimiento exponencial en el número de colecistectomías laparoscópicas en las últimas décadas, se ha generado un aumento en la detección de neoplasias incidentales, permitiendo ofrecer tratamiento curativo en un gran grupo de pacientes. Se evaluaron todas las colecistectomías realizadas durante julio de 2019 a diciembre de 2022 en el Hospital Nacional de Clínicas, Córdoba, Argentina. La evaluación patológica de todas las muestras quirúrgicas reveló una incidencia de 0,83% de adenocarcinoma insospechado en colecistectomías realizadas. 66% de los pacientes con neoplasias insospechadas pertenecían al sexo femenino

Gallbladder carcinoma is a rare entity. Early diagnosis of this neoplasia is difficult, since its symptoms are very unspecific and often this is done late when the patient has an advanced disease and only to mitigate symptoms. With the exponential growth in the number of laparoscopic cholecystectomies in recent decades, there has been an increase in the detection of incidental neoplasms, allowing offering curative treatment in a large group of patients. All cholecystectomies performed during July 2019 to December 2022 were evaluated at the National Hospital of Clinics, Córdoba, Argentina. Pathological evaluation of all surgical samples revealed an incidence of 0.83% of unsuspected adenocarcinoma in cholecystectomies performed. 66% of patients with unsuspected neoplasms were female

Lesión quirúrgica de la vía biliar en residentes. Experiencia de un Centro Formador Universitario / Surgical injury of the biliary tract in residents. Experience of a University Training Center

La lesión quirúrgica de la vía biliar es una complicación peligrosa de la colecistectomía, con importantes secuelas postoperatorias para el paciente en términos de morbilidad, mortalidad y calidad de vida. Tienen una incidencia laparoscópica estimada del 0,4% al 1,5% y del 0,2% al 0,3% en la colecistectomía convencional. El objetivo de este estudio fue evaluar la incidencia de LQVB durante la formación del cirujano y la importancia de realizar colangiografía intraoperatoria (COI) durante esta etapa

Bile duct surgical injury is a dangerous complication of cholecystectomy, with significant postoperative sequelae for the patient in terms of morbidity, mortality and quality of life. These have an estimated laparoscopic incidence of 0.4% to 1.5% and 0.2% to 0.3% in conventional cholecystectomy. The aim of this study was to evaluate the incidence of LQVB during surgeon training and the importance of performing intraoperative cholangiography (IOC) during this stage

Factores asociados con la conversión a técnica abierta en la colecistectomía laparoscópica / Factors associated with conversion to open technique in laparoscopic cholecystectomy

Introducción. La colecistectomía laparoscópica es el estándar de oro para el manejo de la patología de la vesícula biliar con indicación quirúrgica. Durante su ejecución existe un grupo de pacientes que podrían requerir conversión a técnica abierta. Este estudio evaluó factores perioperatorios asociados a la conversión en la Clínica Central OHL en Montería, Colombia. Métodos. Estudio observacional analítico de casos y controles anidado a una cohorte retrospectiva entre 2018 y 2021, en una relación de 1:3 casos/controles, nivel de confianza 95 % y una potencia del 90 %. Se caracterizó la población de estudio y se evaluaron las asociaciones según la naturaleza de las variables, luego por análisis bivariado y multivariado se estimaron los OR, con sus IC95%, considerando significativo un valor de p<0,05, controlando variables de confusión. Resultados. El estudio incluyó 332 pacientes, 83 casos y 249 controles, mostrando en el modelo multivariado que las variables más fuertemente asociadas con la conversión fueron: la experiencia del cirujano (p=0,001), la obesidad (p=0,036), engrosamiento de la pared de la vesícula biliar en la ecografía (p=0,011) y un mayor puntaje en la clasificación de Parkland (p<0,001). Conclusión. La identificación temprana y análisis individual de los factores perioperatorios de riesgo a conversión en la planeación de la colecistectomía laparoscópica podría definir qué pacientes se encuentran expuestos y cuáles podrían beneficiarse de un abordaje mínimamente invasivo, en búsqueda de toma de decisiones adecuadas, seguras y costo-efectivas

Introduction. Laparoscopic cholecystectomy is the gold standard for the management of gallbladder pathology with surgical indication. During its execution, there is a group of patients who may require conversion to the open technique. This study evaluated perioperative factors associated with conversion at the OHL Central Clinic in Montería, Colombia. Methods. Observational analytical case-control study nested in a retrospective cohort between 2018 and 2021, in a 1:3 case/control ratio, 95% confidence level and 90% power. The study population was characterized and the associations were evaluated according to the nature of the variables, then the OR were estimated by bivariate and multivariate analysis, with their 95% CI, considering a value of p<0.05 significant, controlling for confounding variables. Results. The study included 332 patients, 83 cases and 249 controls, showing in the multivariate model that the variables most strongly associated with conversion were: the surgeon's experience (p=0.001), obesity (p=0.036), gallbladder wall thickening on ultrasonography (p=0.011), and a higher score in the Parkland classification (p<0.001). Conclusions. Early identification and individual analysis of the perioperative risk factors for conversion in the planning of laparoscopic cholecystectomy could define which patients are exposed, and which could benefit from a minimally invasive approach, in search of making safe, cost-effective, and appropriate decisions

Colecistectomía Laparoscópica difícil: tratamiento quirúrgico / The surgical management of difficult LaparoscopicCholecystectomy

Objetivo: Caracterizar el tratamiento laparoscópico de pacientes con colecistitis difícil en el Servicio de Cirugía I del Hospital Universitario de Caracas durante el quinquenio2017-2021. Métodos: Estudio retrospectivo, observacional, descriptivo y de corte transversal. Muestra de tipo no probabilístico por conveniencia, seleccionada de la base de datos del Departamento de Historias Médicas del Hospital Universitario de Caracas. El análisis estadístico se realizó con el programa SPSS en su versión 26. Resultados: se recolectaron61 Historias Clínicas con características de colecistectomías laparoscópicas difíciles, el grupo etario más numeroso con67,19%, fue entre 30-59 años; sexo predominante: el femenino con 85,2%; el 42,62% de los pacientes presentaron a su ingreso: litiasis vesicular simple, el cólico vesicular persistente fue la complicación más frecuente con 31,23%. El 65,57% se ubicó en Grado I según Nassar como hallazgo intraoperatorio más frecuente, y según Parkland el 75,40% en grado I, sin individuos afectados con Grado V. Todos los casos fueron tratados quirúrgicamente (colecistectomía laparoscópica total).Conclusión: el total de los pacientes sometidos a tratamiento quirúrgico con hallazgos de colecistectomía laparoscópica difícil, se completó mediante colecistectomía laparoscópica total(AU)

Objective: To characterize the surgical treatment of difficult cholecystectomy in the Chair of Clinical and Surgical therapeutics "A" / Surgery Service I of the University Hospital of Caracas during the five-year period 2017 -2021.Methods: A retrospective, observational, descriptive and cross-sectional study will be carried out. The sample will be of anon-probabilistic type for convenience, selecting from the listof patients in the database of the Department of Medical Records of the Hospital Universitario de Caracas. The statistical analyzes will be carried out with the SPSS program in its version 26. Results: 61 difficult laparoscopic cholecystectomies were observed, the most frequent age group with 67.19%, was between 30-59 years, the female sex with 85.2% was the predominantone. 42.62% of the admission diagnoses were simple gallstones, followed by persistent gallbladder colic as the most frequent complication with 31.23%. 65.57% represent Grade I accordingto Nassar as the most frequent intraoperative finding and according to Parkland 75.40% represented by grade I, leaving Grade V without affected individuals. 100% of the sample were surgically treated by total laparoscopic cholecystectomy. Conclusion: the total number of patients undergoing surgical treatment with difficult laparoscopic cholecystectomy findingswas completed by total laparoscopic cholecystectomy(AU)

Bilateral versus unilateral erector spinae plane block for postoperative analgesia in laparoscopic cholecystectomy: a randomized controlled study

Abstract Introduction Laparoscopic cholecystectomy (LC) is the common surgical intervention for benign biliary diseases. Postoperative pain after LC remains as an important problem, with two components: somatic and visceral. Trocar entry incisions lead to somatic pain, while peritoneal distension with diaphragm irritation leads to visceral pain. Following its description by Forero et al., the erector spinae plane (ESP) block acquired considerable popularity among clinicians. This led to the use of ESP block for postoperative pain management for various operations. Materials and methods This study was conducted between January and June 2019. Patients aged between 18 and 65 years with an American Society of Anesthesiologists (ASA) physical status I-II, scheduled for elective laparoscopic cholecystectomy were included in the study. All the patients received bilateral or unilateral ESP block at the T8 level preoperatively according to their groups. Results There was no significant difference between the groups in terms NRS scores either at rest or while coughing at any time interval except for postoperative 6th hour (p = 0.023). Morphine consumption was similar between the groups but was significantly lower in group B at 12 and 24 hours (p = 0.044 and p = 0.022, respectively). Twelve patients in group A and three patients in group B had shoulder pain and this difference was statistically significant (p = 0.011). Discussion In conclusion, bilateral ESP block provided more effective analgesia than unilateral ESP block in patients undergoing elective LC. Bilateral ESP block reduced the amount of opioid consumption and the incidence of postoperative shoulder pain.

Effectiveness of lung recruitment maneuver in the oxygenation, hemodynamics and post-operative pain of patients undergoing laparoscopic cholecystectomy

Introduction@#Laparoscopic Cholecystectomy uses carbon dioxide (CO2) which affects the respiratory, cardiovascular and renal system. The residual CO2 induces phrenic nerve irritation, manifesting as shoulder and abdominal pain. Recruitment maneuvers opens the lungs and helps expelling this residual carbon dioxide. However, there are limited studies on its role to hemodynamics especially in patients undergoing abdominal laparoscopic procedures.@*Methods@#Sixty patients (51 15.1) scheduled for laparoscopic cholecystectomy under General Endotracheal Anesthesia were randomly allocated to two groups. The control group (Group C) underwent standard laparoscopic cholecystectomy procedures. The experimental group (Group R) was placed in a Trendelenburg and was given 4-5 manual pulmonary inflations at a pressure of 40cmH20. The blood pressure, heart rate, respiratory rate and oxygen saturation, as well as the post operative site pain and shoulder pain were measured using the Numerical Pain Scale (NPS) were monitored at 0, 1 and 2 hours post operatively.@*Results@#The demographics and preoperative vital signs were comparable. The mean systolic blood pressure [119.5 vs 131.5; p=0.002], mean arterial pressure [91.8 vs 95.3; p=0.049], heart rate [74.9 vs 87.5; p <0.001] and respiratory rate [15.7 vs 16.2; p=0.02] were all differrent only during the immediate post operative period. The mean shoulder pain was lower in Group R immediately [1.9 ± 1.2; p=0.01] and 1 hour after surgery [0.7 ± 0.8; p=0.01].@*Conclusion@#Recruitment maneuver significantly reduces the shoulder pain scores after laparoscopic cholecystectomy. It causes a decrease in blood pressure, heart rate and mean arterial pressure in the immediate post operative period.

Gallbladder polyps: correlation and agreement between ultrasonographic and histopathological findings in a population with high incidence of gallbladder cancer / Pólipos da vesícula biliar: correlação e concordância entre achados ultrassonográficos e histopatológicos em uma população com alta incidência de câncer de vesícula biliar

ABSTRACT BACKGROUND: Gallbladder polyps are becoming a common finding in ultrasound. The management has to consider the potential risk of malignant lesions. AIMS: The aim of this study was to analyze the ultrasound findings in patients undergoing cholecystectomy due to gallbladder polyps and compare them for histopathological findings (HPs). METHODS: Patients with an ultrasonographic diagnosis of gallbladder polyp and who underwent cholecystectomy from 2007 to 2020 were included in the study. RESULTS: A total of 447 patients were included, of whom 58% were women. The mean age was 45±12 years. The mean size of polyps in US was 7.9±3.6 mm. Notably, 9% of polyps were greater than 10 mm, and single polyps were significantly larger than the multiple ones (p=0.003). Histopathological findings confirmed the presence of polyps in 88.4%, with a mean size of 4.8±3.4 mm. In all, 16 cases were neoplastic polyps (4.1%), 4 of them being malignancies, and all were single and larger than 10 mm. We found a significant correlation between ultrasound and histopathological findings polyp size determination (r=0.44; p<0.001). The Bland-Altman analysis obtained an overestimation of the US size of 3.26 mm. The receiver operating characteristic (ROC) curve analysis between both measures obtained an area under the receiver operating characteristic curve (AUC) of 0.77 (95%CI 0.74-0.81). Ultrasound polyps size larger than 10 mm had an odds ratio (OR) of 8.147 (95%CI 2.56-23.40) for the presence of adenoma and malignancy, with a likelihood ratio of 2.78. CONCLUSIONS: There is a positive correlation and appropriate diagnostic accuracy between ultrasound size of gallbladder polyps compared to histopathological records, with a trend to overestimate the size by about 3 mm. Neoplastic polyps are uncommon, and it correlates with size. Polyps larger than 10 mm were associated with adenoma and malignancy.

RESUMO RACIONAL: Os pólipos da vesícula biliar estão se tornando um achado comum na ultrassonografia (US). O manejo deve levar em consideração o risco de lesões malignas. OBJETIVOS: Analisar os achados da ultrassonografia em pacientes submetidos à colecistectomia por pólipos vesicais e compará-los com os achados histopatológicos. MÉTODOS: Foram revisados os prontuários médicos dos pacientes com diagnóstico ultrassonográfico de pólipo vesicular e submetidos à colecistectomia no período de 2007 a 2020. RESULTADOS: Foram incluídos no estudo 447 pacientes. A média de idade foi 45±12anos, sendo 58% mulheres. O tamanho médio dos pólipos na US foide 7,9±3,6mm. Nove por cento foram maiores que 10 mm, e os pólipos únicos encontrados foram maiores do que os múltiplos (p=0,003). A HP confirmou a presença de pólipos em 88,4%, tamanho médio 4,8±3,4mm. Dezesseis eram pólipos neoplásicos (4,1%) e quatro deles malignos, únicos e maiores que 10 mm. Foi encontrado correlação significativa entre a determinação do tamanho do pólipo ao ultrassonografia e histopatológicos (r=0,44; p<0,001). A análise de Bland-Altman obteve uma superestimação do tamanho do pólipo ao US em 3,26 mm. A análise da curva da característica de operação do receptor entre as duas medidas obteve uma área sob a curva curva da característica de operação do receptor (AUC) de 0,77 (IC95% 0,74-0,81). Pólipos ao ultrassonografia maiores que 10 mm apresentaram razão de chance (OR) de 8,147 (IC95% 2,56-23,40) para presença de adenoma e malignidade, com razão de verossimilhança de 2,78. CONCLUSÕES: Há uma correlação positiva e acurácia diagnóstica apropriada entre o tamanho dos pólipos da vesícula biliar por ultrassonografia em comparação com os achados histopatológicos, com uma tendência de superestimar o tamanho em cerca de 3 mm. Pólipos maiores que 10 mm foram associados a adenoma e malignidade.

Comparative evaluation of three laparoscopic cholecystectomy techniques in rabbit's model

Purpose: The aim of this randomized study was to compare the complications and perioperative outcome of three different techniques of laparoscopic cholecystectomy (LC). Changes in the liver function test after LC techniques were investigated. Also, we compared the degree of postoperative adhesions and histopathological changes of the liver bed. Methods: Thirty rabbits were divided into three groups: group A) Fundus-first technique by Hook dissecting instrument and Roeder Slipknot applied for cystic duct (CD) ligation; group B) conventional technique by Maryland dissecting forceps and electrothermal bipolar vessel sealing (EBVS) for CD seal; group C) conventional technique by EBVS for gallbladder (GB) dissection and CD seal. Results: Group A presented a longer GB dissection time than groups B and C. GB perforation and bleeding from tissues adjacent to GB were similar among tested groups. Gamma-glutamyl transferase and alkaline phosphatase levels increased (p ≤ 0.05) on day 3 postoperatively in group A. By the 15th postoperative day, the enzymes returned to the preoperative values. Transient elevation of hepatic transaminases occurred after LC in all groups. Group A had a higher adherence score than groups B and C and was associated with the least predictable technique. Conclusions: LC can be performed using different techniques, although the use of EBVS is highly recommended.

Valor pronóstico del índice clínico de complejidad quirúrgica para el manejo clínico de la colecistectomía laparoscópica electiva / Prognostic value of the clinical index for surgical complexity for the clinical management of elective laparoscopic cholecystectomy

Objetivo: Múltiples factores preoperatorios pueden complicar una Colecistectomía Laparoscópica electiva. El índice clínico de complejidad quirúrgica agrupa esos factores y les otorga un puntaje que permite estimar la complejidad quirúrgica, permitiendo optimizar el manejo clínico de la colelitiasis, por eso, este trabajo busca determinar el rendimiento diagnóstico del índice clínico de complejidad quirúrgica en paciente operados en el Centro Médico Docente la Trinidad, de Litiasis Vesicular por colecistectomía laparoscópica electiva, en el tiempo comprendido entre el 2020 y 2021. Métodos: Estudio observacional retrospectivo que, mediante la obtención de datos de 63 historias de pacientes, se calculó el Índice Clínico de Complejidad Quirúrgica y sus subíndices: clínico-quirúrgico, edad y comorbilidades; para comparar cada variable, subíndice y puntaje total con el tiempo quirúrgico. Se calcularon medidas de posición, tendencia central y dispersión. Resultados: Un mayor puntaje en el índice clínico de complejidad quirúrgica se encontró asociado a un tiempo quirúrgico superior a dos horas. El punto de corte para tiempo quirúrgico mayor a 120 minutos fue de 5.5 puntos con una Sensibilidad de 53% y especificidad del 81%. Conclusiones: Un puntaje superior a 5 en el Índice Clínico de Complejidad Quirúrgica nos podría permitir estimar qué colecistectomías laparoscópicas van a tener una duración mayor a 2 horas y en ese sentido permitiría optimizar los planes quirúrgicos(AU)

Objective: Multiple preoperative factors can complicate elective laparoscopic cholecystectomy. The clinical index of surgical complexity groups these factors and gives them a score that allows estimating the surgical complexity, allowing optimizing the clinical management of cholelithiasis, therefore, this work seeks to determine the diagnostic performance of the clinical index of surgical complexity in patients operated at the Centro Médico Docente la Trinidad, of Cholelithiasis by elective laparoscopic cholecystectomy, in the time between 2020 and 2021. Methods: Retrospective observational study that, by obtaining data from 63 patient records, the Clinical Index of Surgical Complexity and its sub-indexes: clinical-surgical, age and comorbidities were calculated to compare each variable, sub-index and total score with the surgical time. Measures of position, central tendency and dispersion were calculated. Results: A higher score in the clinical index of surgical complexity was found to be associated with a surgical time of more than two hours. The cutoff point for surgical time greater than 120 minutes was 5.5 points with a Sensitivity of 53% and specificity of 81%. Conclusions: A score higher than 5 in the Clinical Index of Surgical Complexity could allow us to estimate which laparoscopic cholecystectomies are going to have a duration longer than 2 hours and, in that sense, would allow us to optimize surgical plans(AU)

Colecistectomía Laparoscópica: comparación de Técnica Americana vs Técnica Modificada en relación a elementos de confort del cirujano / Laparoscopic Cholecystectomy: Comparison of the American Technique vs the modified Technique in relation to Surgeon comfort

Introducción: Los cirujanos informaron esfuerzo y dolor musculoesquelético durante o después de un procedimiento. Modificando que la inserción del trócar localizado en línea media clavicular se coloque en línea media, puede mejorar la postura del cirujano. En el Hospital Universitario de Caracas, la técnica de colecistectomía laparoscópica modificada se realiza con frecuencia por disminuir la sensación de esfuerzo y dolor durante el acto quirúrgico. Se plantea el estudio de los elementos de confort para el cirujano con esta técnica modificada. Métodos: Se realizó un estudio prospectivo, descriptivo, comparativo y de corte transversal en cirujanos de pacientes con litiasis vesicular que se resolvieron con colecistectomía laparoscópica, en el Hospital Universitario de Caracas, período enero-agosto 2022. Resultados: Se realizaron 77 colecistectomías laparoscópicas, conformadas por: técnica americana 32 (41,6%) y la técnica modificada 45 (58,4%). La técnica americana evidenció como zona dolorosa la muñeca izquierda (62,5%), y en la técnica modificada reportan en 91,1% sin zona dolorosa. El 43,8% de los cirujanos no se sienten cómodos con la técnica americana, mientras que en la modificada el 97,8% reportaron la técnica cómoda. Los cirujanos refirieron un esfuerzo difícil en el 56,3% con la técnica americana y con la modificada el 82,2% refieren un esfuerzo leve. El grado de dolor en las extremidades fue mayor en los que realizaron la técnica americana en comparación con la modificada, siendo todos los resultados estadísticamente significativos. Conclusión: La técnica modificada tiene ventajas en cuanto a la comodidad del cirujano y su equipo de trabajo y puede emplearse desde el inicio de la formación de cirujanos(AU)

Surgeons reported exertion and musculoskeletal pain during or after a procedure. Modifying the insertion of the trocar located in the clavicular midline to be placed in the midline, to improve the surgeon's posture. At the Hospital Universitario de Caracas, the modified laparoscopic cholecystectomy technique is frequently performed to reduce the sensation of effort and pain during the surgical act. the study of comfort elements for the surgeon with this modified technique is proposed. Methods: A prospective, descriptive, comparative and cross-sectional study was carried out in patients with gallbladder lithiasis at the Hospital Universitario de Caracas, from January to August 2022. Results: 77 laparoscopic cholecystectomies were performed, consisting of: American technique 32 (41, 6%) and the modified technique 45 (58.4%). The American technique showed the left wrist as a painful area (62.5%), and in the modified technique they reported no painful area in 91.1%. 43.8% of the surgeons did not feel comfortable with the American technique, while in the modified one 97.8% reported the comfortable technique. the surgeons reported a difficult effort in 56.3% with the American technique and with the modified one, 82.2% reported a light effort. the degree of pain in the extremities was greater in those who performed the American technique compared to the modified one, all of the results being statistically significant. Conclusion: the modified technique has advantages in terms of comfort for the surgeon and his team and can be used from the beginning of surgeon training

Revisión Anatómica de Sistema Venoso Intrahepático. Hematoma Intrahepático Subcapsular en Colecistectomia Laparoscópica / Anatomical Review of Intrahepatic Venous System. Subcapsular Intrahepatic Hematoma In Laparoscopic Cholecystectomy

La aparición del hematoma intrahepático subcapsular (SHI) después de la colecistectomía laparoscópica es una complicación poco frecuente. El estudio anatómico de las venas suprahepáticas nos permitió observar que existen numerosos patrones de ramificación de estos. Presentamos el caso de una mujer de 37 años que, durante la intervención de colecistectomía laparoscópica, se observa en el acto quirúrgico, la formación espontánea de hematomas subcapsulares, secundario a la tracción forzada del fondo del órgano

The appearance of subcapsular intrahepatic hematoma (SHI) after laparoscopic cholecystectomy is an infrequent complication.The anatomical study of the suprahepatic veins allowed us to observe that there are numerous branching patterns of these. We present the case of a 37-year-old female who, during the laparoscopic cholecystectomy intervention, is observed in the surgical act, the spontaneous formation of subcapsular hematomas, secondary to forced traction of the fundus of the organ

¿Día o noche? El momento ideal para realizar la colecistectomía / Day or night? The right time to perform cholecystectomy

Introducción. La frecuencia de complicaciones postquirúrgicas de la colecistectomía realizada en la noche es un tema de controversia, siendo que se ha reportado una frecuencia mayor durante el horario nocturno. El objetivo de este estudio fue analizar la presentación de colecistectomía difícil dependiendo de la hora en que se realizó la cirugía, además de otras complicaciones, estancia intrahospitalaria postquirúrgica, reingreso a 30 días y reintervención. Métodos. Se realizó un estudio retrospectivo, observacional, analítico y transversal, comparando la presentación de colecistectomía difícil y su frecuencia en horario diurno (8:00 am a 7:59 pm) y nocturno (8:00 pm a 7:59 am), además de seroma, absceso, hematoma, fuga biliar, biloma, estancia intrahospitalaria postquirúrgica, reingreso a 30 días y reintervención. Resultados. Se incluyeron en el estudio 228 pacientes, 117 operados durante el día (52 %) y 111 durante la noche (48 %). La colecistectomía difícil se presentó 26 % vs 34 % de los casos intervenidos en el día y la noche, respectivamente. La complicación más frecuente fue seroma (14 %). La estancia hospitalaria media fue de 2,7 días en cirugías diurnas y de 2,5 en cirugías nocturnas; hubo 3 % de reintervenciones y 6 %, respectivamente. También hubo 2 % de reingresos a los 30 días entre los pacientes operados en el día y 3 % entre los operados en la noche. Conclusiones. La frecuencia de colecistectomía difícil y las complicaciones, la estancia intrahospitalaria postquirúrgica, el reingreso a 30 días y la necesidad de reintervención, no tuvieron diferencias significativas respecto al horario de la cirugía.

Introduction. The frequency of post-surgical complications of cholecystectomy performed overnight is a matter of controversy, and a higher rate has been reported during the night shift. The objective of this study was to analyze the presentation of difficult cholecystectomy depending on the time the surgery was performed, in addition to other complications, postoperative hospital stay, 30-day readmission, and reintervention. Methods. A retrospective, observational, analytical and cross-sectional study was carried out, comparing the presentation of difficult cholecystectomy and its frequency during daytime (8:00 am to 7:59 pm) and at night (8:00 pm to 7:59 am), in addition of seroma, abscess, bile leak, biloma, hematoma, post-surgical hospital stay, 30-day readmission, and reintervention.Results. A total of 228 patients were included in the study, 117 patients operated during the day (52%), and 111 at night (48%). Difficult cholecystectomy occurred in 26% vs. 34% of the cases operated on during the day and at night, respectively. The most frequent complication was seroma (14%). The mean hospital stay was 2.7 days in day surgeries and 2.5 in night surgeries; there were also 2% readmission at 30 days among patients operated during the day and 3% among those operated on at night. Conclusions. The frequency of difficult cholecystectomy and complications, postoperative hospital stay, 30-day readmission, and the need of reintervention, did not have significant differences with respect to the time of surgery.

Opciones terapéuticas para la colecistitis aguda: de las guías de Tokio 2018 a la práctica clínica / Therapeutic options for acute cholecystitis: from the Tokyo guidelines 2018 to clinical practice / Opções terapêuticas para colecistite aguda: das diretrizes de Tóquio 2018 à prática clínica

Resumen: Introducción: el tratamiento "gold standard" de la colecistitis aguda es la colecistectomía laparoscópica temprana. En pacientes añosos de alto riesgo anestésico-quirúrgico, con cuadros de evolución subaguda y/o con repercusión sistémica, es alternativa el tratamiento médico exclusivo o asociado al drenaje vesicular percutáneo. Objetivo: analizar y comparar las recomendaciones internacionales con las conductas terapéuticas en dos centros asistenciales de tercer nivel para pacientes con colecistitis aguda. Método: trabajo descriptivo, prospectivo de 161 pacientes con colecistitis aguda litiásica asistidos en los departamentos de emergencia del Hospital de Clínicas y el Hospital Español entre mayo de 2018 y mayo de 2019. Resultados: la colecistectomía laparoscópica temprana fue indicada en el 88% de los pacientes, con 3% de conversión y 9% de morbilidad. 12% recibieron manejo no operatorio, asociándose en el 65% colecistostomía percutánea. La edad avanzada, comorbilidades, discrasias y la severidad del cuadro presentaron asociación significativa con la modalidad terapéutica (p <0,05). El 40% de los pacientes en los que se realizó manejo no operatorio presentó recurrencias sintomáticas. A todos se les realizó la colecistectomía en diferido. Conclusiones: la colecistectomía laparoscópica temprana es la conducta terapéutica más frecuente. Las principales indicaciones de manejo no operatorio en nuestro medio son las características sistémicas desfavorables. El mismo presenta altas tasas de éxito y escasa morbilidad con una recurrencia sintomática del 40%.

Abstract: Introduction: early laparoscopic cholecystectomy is the gold standard treatment for acute cholecystitis. However, exclusive medical treatment (EMC) or medical treatment associated with percutaneous gallbladder drainage is the treatment of choice in elderly patients given their high surgical and anesthetic risk and upon the subacute course of the condition and/or its systemic repercussions. Objective: to analyze and compare international guidelines to the therapeutic behavior for patients with acute cholecystectomy in two third-level hospitals. Methodology: descriptive, prospective study of 161 patients with litiasic acute cholecystitis treated in the ER of Hospital de Clínicas and Hospital Español between May 2018 and May 2019. Results: early laparoscopic cholecystectomy was indicated in 88% of patients, conversion being 3% and morbidity 9%. Twelve percent of patients received non-surgical treatment, 65% of which evidenced percutaneous cholecystostomy. Old age, comorbidities, dyscrasias, and severity of the condition were closely related to the therapeutic modality (p < 0.05). Forty percent of patients who received non-surgical treatment presented symptomatic repercussions. They all underwent delayed cholecystectomy. Conclusions: early laparoscopic cholecystectomy is the most frequent treatment of choice. Unfavorable systemic characteristics are the main indications for non-surgical management in our country. This surgical treatment evidences high success rates and scarce morbidity with 40% of systemic repercussions.

Resumo: Introdução: o tratamento padrão ouro da colecistite aguda é a colecistectomia laparoscópica precoce. Em pacientes idosos com alto risco anestésico-cirúrgico, com evolução subaguda e/ou repercussão sistêmica, o tratamento clínico isolado ou associado à drenagem percutânea da vesícula biliar é uma alternativa. Objetivo: analisar e comparar recomendações internacionais com condutas terapêuticas em dois centros terciários para pacientes com colecistite aguda. Método: estudo descritivo e prospectivo de 161 pacientes com colecistite aguda de cálculos atendidos nos serviços de emergência do Hospital de Clínicas e Hospital Español no período maio de 2018 - maio de 2019. Resultados: a colecistectomia laparoscópica precoce foi indicada em 88% dos pacientes, com 3% de conversão e 9% de morbidade. 12% receberam tratamento não operatório, associado a 65% colecistostomia percutânea. Idade avançada, comorbidades, discrasias e gravidade do quadro apresentaram associação significativa com a modalidade terapêutica (p < 0,05). 40% dos pacientes nos quais o manejo não operatório foi realizado apresentaram recidivas sintomáticas. Todos foram submetidos à colecistectomia diferida. Conclusões: a colecistectomia laparoscópica precoce é a abordagem terapêutica mais frequente. As principais indicações para o manejo não operatório em nosso meio são as características sistêmicas desfavoráveis. Apresentando altas taxas de sucesso e baixa morbidade com recorrência sintomática de 40%.

Costos de las diversas modalidades posoperatorias de la colecistectomía laparoscópica. Cooperativa Médica de Florida (COMEF), 2016-2021 / Cost effectivenes of the different postoperative management modalities in laparoscopic cholecystectomy Florida Medical Cooperative (COMEF) 2016-2021 / Custos das várias modalidades pós-operatórias do colecistectomia laparoscópica. Cooperativa Médica da Flórida (COMEF). 2016-2021

Introducción: la colecistectomía laparoscópica constituye el patrón oro en el tratamiento de la litiasis biliar. Bajo una estricta selección de pacientes, la modalidad ambulatoria ha demostrado ser factible y segura. En COMEF se realiza desde el año 2016. El posoperatorio transcurrió por diferentes etapas, internación en cuidados moderados, internación en sala de cirugía del día más internación domiciliaria, internación únicamente en sala de cirugía del día y finalmente alta domiciliaria desde block quirúrgico. El objetivo del trabajo es calcular los costos de cada una de las modalidades posoperatorias de la colecistectomía laparoscópica en el período 2016-2021. Materiales y método: se realizó un estudio de costos de cada una de las modalidades posoperatorias mediante la determinación del costo del día cama ocupada en cuidados moderados e internación domiciliaria, así como la retribución de un auxiliar de enfermería encargado de la sala de cirugía del día. Los datos fueron obtenidos de la Estructura de Costos de Atención a la Salud y la producción de cada servicio. Resultados: el costo del día cama ocupada en cuidados moderados es de $15.056, el de internación en sala de cirugía del día y luego internación domiciliaria $4.953,69, únicamente en sala de cirugía del día $807,69 y finalmente el alta domiciliaria desde block quirúrgico $33. Conclusiones: los costos del posoperatorio de la colecistectomía laparoscópica en modalidad ambulatoria son menores que los que requieren internación en cuidados moderados, y dichos costos se reducen progresivamente cuando se pasa de la internación domiciliaria al alta sin internación domiciliaria y sin recuperación en sala de cirugía del día.

Introduction: laparoscopic cholecystectomy constitutes the gold standard to treat gallstones. Ambulatory treatment has proved to be feasible and safe for carefully selected patients. At COMEF, laparoscopic cholecystectomies have been performed since 2016, and postoperative management has covered different stages: intermediate care during hospitalization, admission in day surgery units plus home care or home admissions, hospitalization in day surgery units and discharge directly after surgery, directly from the ER. The study aims to calculate the cost of each one of the different postoperative management modalities for laparoscopic cholecystectomies between 2016 and 2021. Method: a cost study was conducted for each one of the postoperative management modalities by calculating the cost of the hospital bed day in intermediate care and house care, as well as the salary of the nurses' staff at the day surgery unit. Data was obtained from the Healthcare Services Cost Structure and the production of each one of the services mentioned. Results: the daily bed day cost in intermediate care is $ 15,056, the daily cost of day surgery unit plus home care afterwards is $ 4,953.69, the cost of surgery admission in the day surgery unit is $ 807.69 and discharge directly from the OR is $ 33. Conclusions: the postoperative cost of ambulatory laparoscopic cholecystectomy is lower than that requiring interaction in intermediate care and these costs are progressively reduced when moving from home care with and without interaction upon discharge towards no recovery in the day surgery unit.

Introdução: a colecistectomia laparoscópica é o padrão ouro no tratamento da litíase biliar. Com uma rigorosa seleção de pacientes, a modalidade ambulatorial tem se mostrado viável e segura. Na COMEF é realizada desde 2016, com o pós-operatório passando por diferentes etapas: internação em cuidados moderados, internação na sala de cirurgia do dia mais internação domiciliar, internação apenas na sala de cirurgia no dia e finalmente alta domiciliar do bloco cirúrgico. Objetivo: calcular os custos de cada uma das modalidades pós-operatórias de colecistectomia laparoscópica no período 2016-2021. Materiais e método: foi realizado um estudo dos custos de cada uma das modalidades pós-operatórias determinando o custo do dia de leito ocupado em cuidados moderados e internação atendimento domiciliar, bem como a remuneração de um auxiliar de enfermagem responsável pela cirurgia do dia. Os dados foram obtidos da Estrutura de Custos de Assistência à Saúde e da produção de cada serviço. Resultados: o custo do leito de dia ocupado em cuidados moderados, em é de $ 15.056, a hospitalização na sala de cirurgia de dia e depois internação domiciliar $ 4.953,69, apenas na sala da cirurgia de dia $ 807,69 e finalmente alta domiciliar do bloco cirúrgico $ 33 (valores em pesos uruguaios). Conclusões: os custos pós-operatórios da colecistectomia laparoscópica na modalidade ambulatorial são menores do que aqueles que requerem interação em cuidados moderados e são progressivamente reduzidos quando passa da internação em casa à alta sem interação em casa e sem recuperação na sala de cirurgia no dia.

Lesiones de vía biliar poscolecistectomía: conducta terapéutica actual / Post Cholecystectomy Bile Duct Injuries: Current Therapeutic Option

Resumen La colecistolitiasis es una condición común en Chile. La complicación más frecuente de esta condición es la colecistitis aguda. Aproximadamente 60.000 colecistectomías son realizadas anualmente en nuestro país, convirtiéndola en una de las patologías digestivas más frecuentes. El tratamiento de la colelitiasis ha evolucionado las últimas dos décadas. Con el desarrollo de la laparoscopía a final de 1980, la colecistectomía abierta fue definitivamente sustituida en los 90 por la vía laparoscópica. Desafortunadamente, la generalización de este procedimiento produjo un aumento en la incidencia de lesiones de vía biliar, aumentando desde una 0,1-0,2% hasta un 0,5-0,7%. Si bien, con el progresivo entrenamiento de los cirujanos en la cirugía mínimamente invasiva esta cifra ha disminuido nuevamente, la LVB aún constituye una de las complicaciones más graves en cirugía, generando gran impacto en la calidad de vida del paciente, e incluso costos en salud que pueden llegar a ser devastadores. El manejo de una lesión de vía biliar es, para muchos cirujanos, un desafío quirúrgico, que para su resolución requiere de las habilidades y experiencia de un cirujano hepatobiliar y derivación a centros de salud especializados. Sin duda, la acción más importante es extremar de manera rutinaria las medidas de prevención. Sin embargo, una vez que la lesión se ha producido, el futuro del paciente depende, directamente, del buen criterio del cirujano, tanto para realizar un diagnóstico temprano, como del enfrentamiento terapéutico que realice. El objetivo de este trabajo es dar a conocer diferentes conductas preventivas y terapéuticas cuando esta complicación se presenta.

Calculous biliary disease is a common condition in Chile. Over 60.000 cholecystectomies are performed annually, making gallstone disease one of the most common digestive health problems. The treatment of calculous biliary disease has evolved over the last 2 decades. With the development of laparoscopic technology in the late 1980s, new techniques for cholecystectomy were introduced. By the early 1990s, laparoscopic cholecystectomy had replaced open cholecystectomy in the operative management of gallbladder stone disease. Unfortunately, the widespread application of laparoscopic cholecystectomy has led to a concurrent rise in the incidence of major bile duct injuries. Reports have estimated the incidence has risen from 0.1-0.2 to 0.5-0.7%. Although, exponential training of surgeons in minimally invasive surgery has led to decrease this numbers again, bile duct injuries still constitute one of the most serious complications in surgery, generating a great impact on the patient's quality of life, and even health costs that can be devastating. The management of patients following major bile duct injurie is a surgical challenge, often requiring the skills of experienced hepatobiliary surgeons at tertiary referral centers. In this setting, the most important action is to routinely maximize prevention measures. However, once injury has occurred, patient's future depends directly on the correct judgment of the surgeon, both to make an early diagnosis and to choose the best therapeutic confrontation. The objective of this article is to present the different preventive and therapeutic options available when this complication occurs.

Anestesia total intravenosa libre de opioides guiada por qCON y qNOX en paciente obesa / Total Intravenous anesthesia in patients with intestinal occlusive syndrome

Introducción: En los últimos años la anestesia libre de opioides ha constituido una alternativa más a las técnicas tradicionales de anestesia general. Con la exclusión de este grupo de fármacos se evitan los múltiples efectos adversos y complicaciones asociados al mismo. A pesar de que la anestesia libre de opioides tiene sus indicaciones y que ha demostrado sus beneficios en cierto grupo de pacientes, existen aún controversias en relación con su utilidad en el paciente obeso. Características como la obesidad hacen que los modelos multimodales empleados para programar la anestesia libre de opioides sean cada vez más complejos. Objetivos: Describir un caso clínico realizado con la técnica de anestesia libre de opioides que constituye la primera experiencia en Ecuador. Presentación del caso: Se presenta el caso de una paciente obesa intervenida de colecistectomía laparoscópica mediante infusión de propofol, ketamina, lidocaína, sulfato de magnesio, y dexmedetomidina. La titulación de estos fármacos se realizó mediante cálculo de concentraciones plasmáticas a través de modelos farmacocinéticos y guiada por monitorización de profundidad anestésica y analgésica, con lo cual se logró optimizar el consumo de fármacos, disminuir las complicaciones y una evolución clínica favorable. Hasta donde se conoce a nivel local y de país (Ecuador) es la primera experiencia que se reporta con esta técnica. Conclusiones: La anestesia libre de opioides puede resultar una elección en el paciente obeso ya que asegura una adecuada recuperación sin efectos adversos asociados(AU)

Introduction: In recent years, opioid-free anesthesia has become another alternative in front of traditional general anesthesia techniques. The exclusion of this group of drugs avoids the numerous adverse effects and complications associated with its usage. Although opioid-free anesthesia has its indications and has showed its benefits in a certain group of patients, there is still controversy regarding its usefulness in the obese patient. Characteristics such as obesity make the multimodal models used to program opioid-free anesthesia increasingly complex. Objectives: To describe a clinical case involving the opioid-free anesthesia technique, which is the first experience in Ecuador. Case presentation: The case is presented of a female obese patient who underwent laparoscopic cholecystectomy by infusion of propofol, ketamine, lidocaine, magnesium sulfate and dexmedetomidine. Titration of these drugs was carried out by calculating plasma concentrations through pharmacokinetic models and guided by monitoring of anesthetic and analgesic depth, thus optimizing drug consumption, reducing complications and achieving a favorable clinical evolution. As far as known locally and in the country (Ecuador), this is the first reported experience with this technique. Conclusions: Opioid-free anesthesia may be a choice in the obese patient, since it ensures adequate recovery without associated adverse effects(AU)

Variante anatómica de la vía biliar durante la colecistectomía laparoscópica / Anatomical variant of the bile duct during laparoscopic cholecystectomy / Variante anatômica do ducto biliar durante colecistectomia laparoscópica

Se presenta la colangiografía intraoperatoria obtenida durante la colecistectomía laparoscópica de una paciente de 58 años con el diagnóstico de colecistitis aguda.