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Insulinomas represent <10% of pancreatic tumors. It is a functional neuroendocrine tumor that can cause recurrent and severe episodes of loss of consciousness due to hypoglycemia. Surgical removal is the only curative treatment. The selection of the optimal surgical technique must be individualized for each patient. Currently, there are emerging innovations in less invasive techniques that reduce morbidity. We present the case of a 23-year-old woman who underwent enucleation of an insulinoma localized at the tip of the pancreatic tail after laparoscopic surgery, with a focus on vascular and splenic preservation. The tumor was safely identified during surgery and enucleated without injury to the spleen and adjacent vascular structures or postoperative complications.

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RESUMEN Antecedentes: Las hernias de línea media asociadas a diástasis de los músculos rectos anteriores (DRA) son frecuentes y se ha propuesto el tratamiento de ambas patologías simultáneamente para reducir la recurrencia. Las técnicas mínimamente invasivas permiten el tratamiento adecuado con reducción de complicaciones asociadas a la herida quirúrgica; sin embargo, aún no hay consenso acerca de cuál es la mejor técnica. Objetivo: Evaluar los resultados posoperatorios a corto y mediano plazo de una serie de pacientes con defectos de línea media y DRA tratados con la técnica Trans-umbilical Endoscopic Sublay Repair (TESuR). Material y método: Se realizó un estudio observacional descriptivo retrospectivo de pacientes a quienes se les aplicó técnica TESuR entre diciembre de 2020 y marzo de 2023, con un seguimiento posoperatorio mínimo de 6 meses. Se analizaron variables demográficas y perioperatorias. Resultados: En el período de estudio se realizaron 24 reparaciones. Todos los pacientes fueron varones. La edad promedio fue de 57 años (rango 41-81) y el índice de masa corporal (IMC) de 28,9 (21,7- 36,1) kg/m². El área del defecto fue de 8,8 (4-25) cm2, con una DRA de 5,1 (3-9) cm. La tasa de complicaciones a 30 días posoperatorios alcanzó el 17% (4/24); todas fueron Clavien-Dindo I. Con un promedio de seguimiento de 18,6 meses (rango 6-25) no se detectaron recidivas herniarias, aunque dos pacientes (8%) presentaron recidiva de la DRA. Conclusiones: La técnica TESuR presentó una baja morbilidad sin recidivas, por lo que la consideramos una alternativa segura y eficaz para el tratamiento de la DRA asociada a defectos de la línea media.

ABSTRACT Background: Midline hernias associated with diastasis recti abdominis (DRA) are common. Simultaneous treatment of both conditions has been recommended to reduce recurrence. Minimally invasive techniques allow adequate treatment while reducing surgical site complications. However, there is still no consensus regarding the optimal technique. Objective: The aim of this study was to evaluate the short and mid-term outcomes of Trans-umbilical Endoscopic Sublay Repair (TESuR) in patients with midline defects and DRA. Material and methods: We conducted a retrospective descriptive observational study of patients undergoing TESuR between December 2020 and May 2023, with a minimum postoperative follow-up of 6 months. The demographic and perioperative variables were analyzed. Results: A total of 24 procedures were performed during the study period. All the patients were men. Mean age was 57 years (range 41-81) and body mass index (BMI) was 28.9 (21.7- 36.1) kg/m². Mean size of the defect was 8.8 cm2 (4-25) with a mean diastasis width of 5 cm (3-9). The rate of complications at 30 days was 17% (4/24) and were all are grade 1 of the Clavien-Dindo classification. After a mean follow-up of 18.6 months (range 6-25), there were no hernia recurrences, although 2 patients (8%) had a recurrence of DRA. Conclusions: TESuR showed low morbidity rate and absence of recurrences, constituting a safe and effective option for the management of DRA associated with midline defects.

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INTRODUCTION: There is uncertainty regarding the method of mesh fixation and peritoneal closure during transabdominal preperitoneal (TAPP) repair for inguinal hernias, with no definitive guidelines to guide surgeon choice. METHODS: MEDLINE, Cochrane, Central Register of Clinical Trials, and Web of Science were searched for RCTs published until November 2023. Risk ratios (RRs) and mean differences (MD) with 95% confidence intervals (CIs) were pooled with a random-effects model. Statistical significance was defined as p < 0.05. Heterogeneity was assessed using the Cochran Q test and I2 statistics, with p values inferior to 0.10 and I2 > 25% considered significant. Statistical analyses were conducted using Review Manager version 5.4 and RStudio version 4.1.2 (R Foundation for Statistical Computing). RESULTS: Eight randomized controlled trials (RCTs) were included, comprising 624 patients, of whom 309 (49.5%) patients were submitted to TAPP with the use of tacks, and 315 (50.5%) received suture fixation. The use of tacker fixation was associated with a significant increase in postoperative pain at 24 h (MD 0.79 [VAS score]; 95% CI 0.38 to 1.19; p < 0.0002; I2 = 87%) and one week (MD 0.42 [VAS score]; 95% CI 0.05 to 0.79; p < 0.03, I2 = 84%). The use of tacks was associated with shorter operative time (MD-25.80 [min]; 95% - 34.31- - 17.28; P < 0.00001; I2 = 94%). No significant differences were found in overall complications, chronic pain, seromas, hematomas, and urinary retention rates. CONCLUSION: In patients who underwent TAPP hernia repair, tacks are associated with decreased operative time but increased postoperative pain at 24 h and one week.

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Resumen: Es frecuente que, durante el postoperatorio inmediato, el anestesiólogo se enfrente a pacientes con dolor posterior a una colecistectomía laparoscópica. La nebulización de anestésicos locales en la cavidad abdominal durante la cirugía laparoscópica parece ser un procedimiento prometedor para reducir el dolor en el postoperatorio, y de esta manera disminuir la cantidad de analgésicos y opioides administrados a los pacientes. Presentamos el caso de una mujer de 35 años de edad que fue sometida a una colecistectomía laparoscópica, a la cual se nebulizó ropivacaína en la cavidad abdominal al término de ésta, con lo que se redujo notablemente el dolor en el postoperatorio hasta el egreso de la paciente.

Abstract: It is common for the anesthesiologist to cope with patients in the immediate postoperative period with moderate to severe amount of pain after laparoscopic cholecystectomy. The nebulization of local anesthetics in the abdominal cavity during laparoscopic surgery seems to be a promising procedure to reduce pain in the postoperative period thus reducing the number of analgesics and opioids administered to patients. We present the case of a 35-year-old woman who underwent a laparoscopic cholecystectomy, nebulizing ropivacaine in the abdominal cavity at the end of it, significantly reducing postoperative pain until the patient's discharge.

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This article addresses the semantic segmentation of laparoscopic surgery images, placing special emphasis on the segmentation of structures with a smaller number of observations. As a result of this study, adjustment parameters are proposed for deep neural network architectures, enabling a robust segmentation of all structures in the surgical scene. The U-Net architecture with five encoder-decoders (U-Net5ed), SegNet-VGG19, and DeepLabv3+ employing different backbones are implemented. Three main experiments are conducted, working with Rectified Linear Unit (ReLU), Gaussian Error Linear Unit (GELU), and Swish activation functions. The applied loss functions include Cross Entropy (CE), Focal Loss (FL), Tversky Loss (TL), Dice Loss (DiL), Cross Entropy Dice Loss (CEDL), and Cross Entropy Tversky Loss (CETL). The performance of Stochastic Gradient Descent with momentum (SGDM) and Adaptive Moment Estimation (Adam) optimizers is compared. It is qualitatively and quantitatively confirmed that DeepLabv3+ and U-Net5ed architectures yield the best results. The DeepLabv3+ architecture with the ResNet-50 backbone, Swish activation function, and CETL loss function reports a Mean Accuracy (MAcc) of 0.976 and Mean Intersection over Union (MIoU) of 0.977. The semantic segmentation of structures with a smaller number of observations, such as the hepatic vein, cystic duct, Liver Ligament, and blood, verifies that the obtained results are very competitive and promising compared to the consulted literature. The proposed selected parameters were validated in the YOLOv9 architecture, which showed an improvement in semantic segmentation compared to the results obtained with the original architecture.

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Laparoscopic instrument handles design and dimensions are crucial to determine the configuration of surgeons' hand grip and, therefore, can have a deleterious effect on overall surgical efficiency and surgeons' comfort. The aim of this study is to investigate the impact of laparoscopic handle size and hand surface area on surgical task performance. A single-blind, randomized crossover trial was carried out with 29 novice medical students. Participants performed three simulated tasks in "black box" simulators using two scissor-type handles of different sizes. Surgical performance was assessed by the number of errors and time required to complete each task. Hand anthropometric data were measured using a 3D scanner. Execution time was significantly higher when cutting and suturing tasks were performed with the smaller handle. In addition, hand surface area was positively correlated with peg transfer task time when performed with the standard handle and was correlated with cutting task time in small and standard handle groups. We also found positive correlations between execution time and the number of errors executed by larger-handed participants. Our findings indicate that laparoscopic handle size and hand area influence surgical performance, highlighting the importance of considering hand anthropometry variances in surgical instrument design.

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OBJECTIVE: To describe a novel dissector device useful in laparoscopy, better definition of anatomic structures to have a better dissection, separation, and cleaning of the structures. METHOD: The endoscopic dissector DisePad was designed and developed at the experimental surgery department of Centro Médico Nacional 20 de Noviembre, and properly patented at Instituto Mexicano de la Propiedad Industrial (title 3512). RESULTS: The tip of the device is the most important component, by its direct contact with the different tissues, consists of a cotton-polyester black cloth impregnated with a special gel immersed into a hot saline solution. Once soaked the tip maintains the solution temperature on itself. CONCLUSIONS: This device has been used in 364 laparoscopic procedures demonstrating, its utility to visualize, separate and clean anatomical structures without thermal lesion, tear, hemorrhage or visceral perforation.

OBJETIVO: Describir un nuevo dispositivo disector en laparoscopia, con una mejor definición de las estructuras anatómicas para obtener una mejor disección,separación y limpieza de las estructuras. MÉTODO: El disector endoscópico DisePad fue diseñado y desarrollado en el servicio de cirugía experimental del Centro Médico Nacional 20 de Noviembre, y patentado ante el Instituto Mexicano de la Propiedad Industrial (registro n.º 3512). RESULTADOS: El componente más importante del disector es la punta que tiene contacto con los tejidos: es una tela de algodón-poliéster negra impregnada en un gel (patentado) que, al ser sumergido en un termo con solución salina caliente, permite retener la temperatura. CONCLUSIONES: Este dispositivo ha sido utilizado en 364 procedimientos quirúrgicos por vía laparoscópica y ha demostrado ser útil para visualizar, separar y limpiar estructuras anatómicas sin producir daño por lesión térmica, desgarre, hemorragia ni perforación visceral.

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This study evaluates a new multiport device with single access to the abdominal cavity produced with routine hospital supplies that could be applied to laparoscopically assisted cryptorchidectomy in standing horses. Initially, the new device was evaluated on five cadavers of bovine fetuses (n = 5), placed assisted in a minilaparotomy performed in the flank region. Subsequently, the device was evaluated in four cryptorchid horses treated during the hospital routine. During the evaluation of the new device, the possibilities of exploring the abdominal cavity, inspection, and intra-abdominal manipulation with two Babcock forceps were verified. The possibilities were described, and surgical time data were recorded and analyzed using descriptive statistics. In the cadavers, a wide exploration of the abdominal cavity was possible, with a laparoscopic inspection through the right paralumbar fossa and manipulation of intra-abdominal structures with Babcock forceps inserted by the new device. In cryptorchid horses, laparoscopically assisted cryptorchidectomy with a new device was feasible in two patients, and in the others, it allowed the diagnosis of adhesions and ectopic locations in the inguinal region of testicles retained in the cavity. Therefore, the new device was efficient in exploring the inguinal region of cryptorchid horses in the standing position. The present study is preliminary and can support future studies that aim to improve the developed prototype.

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OBJECTIVES: To investigate the impact of Three-Dimensional (3D) laparoscopy compared to traditional laparotomy on serum tumor markers and coagulation function in patients diagnosed with early-stage Endometrial Cancer (EC). METHOD: The authors retrospectively analyzed the clinical data of 75 patients diagnosed with early-stage EC and categorized them into two groups based on the surgical techniques employed. The 3D group consisted of 36 patients who underwent 3D laparoscopic surgery, while the Laparotomy group comprised 39 patients who underwent traditional laparotomy. The authors then compared the alterations in serum tumor markers and coagulation function between the two groups. RESULTS: Postoperatively, serum levels of CA125, CA199, and HE4 were notably reduced in both groups on the third day, with the levels being more diminished in the 3D group than in the Laparotomy Group (p < 0.05). Conversely, FIB levels escalated significantly in both groups on the third-day post-surgery, with a more pronounced increase in the 3D group. Additionally, PT and APTT durations were reduced and were more so in the 3D group than in the laparotomy group (p < 0.05). CONCLUSIONS: When juxtaposed with traditional laparotomy, 3D laparoscopic surgery for early-stage EC appears to be more efficacious, characterized by reduced complications, and expedited recovery. It can effectively mitigate serum tumor marker levels, attenuate the inflammatory response and damage to immune function, foster urinary function recovery, and enhance the quality of life. However, it exerts a more significant influence on the patient's coagulation parameters, necessitating meticulous prevention and treatment strategies for thromboembolic events in clinical settings.

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Abstract Background: Emergence Delirium (ED) is an essential condition in the immediate postoperative period. Systematic review and meta-analysis of randomized controlled trials have concluded that the effect of ketamine on postoperative delirium remains unclear. The present study sought to evaluate if the intraoperative use of ketamine for postoperative analgesia is associated with postoperative ED in laparoscopic surgeries. Methods: A prospective observational study was performed in the PostAnesthetic Care Unit (PACU) to evaluate patients who had undergone laparoscopic surgery under a rigid intraoperative anesthesia protocol from July 2018 to January 2019. Patients submitted to laparoscopic surgery for cholecystectomy, oophorectomy, or salpingectomy with a score ≥1 on the Richmond Assessment Sedation Scale (RASS) or ≥2 on the Nursing Delirium Screening Scale (Nu-DESC) were considered to have ED. t-test, Chi-Square test or Fisher's exact tests were used for comparison. Results: One hundred and fifteen patients were studied after laparoscopic surgery. Seventeen patients (14.8%) developed ED, and the incidence of ED in patients who received ketamine was not different from that of other patients (18.3% vs. 10.6%, p = 0.262). Patients with ED had more postoperative pain and morphine requirement at the PACU (p = 0.005 and p = 0.025, respectively). Type of surgery (general surgery, OR = 6.4, 95% CI 1.2‒35.2) and postoperative pain (OR = 3.7, 95% CI 1.2‒11.4) were risk factors for ED. Conclusion: In this study, no association was found between ED and intraoperative administration of ketamine in laparoscopic surgeries. Type of surgery and postoperative pain were risk factors for ED.

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Abstract Objectives To investigate the impact of Three-Dimensional (3D) laparoscopy compared to traditional laparotomy on serum tumor markers and coagulation function in patients diagnosed with early-stage Endometrial Cancer (EC). Method The authors retrospectively analyzed the clinical data of 75 patients diagnosed with early-stage EC and categorized them into two groups based on the surgical techniques employed. The 3D group consisted of 36 patients who underwent 3D laparoscopic surgery, while the Laparotomy group comprised 39 patients who underwent traditional laparotomy. The authors then compared the alterations in serum tumor markers and coagulation function between the two groups. Results Postoperatively, serum levels of CA125, CA199, and HE4 were notably reduced in both groups on the third day, with the levels being more diminished in the 3D group than in the Laparotomy Group (p < 0.05). Conversely, FIB levels escalated significantly in both groups on the third-day post-surgery, with a more pronounced increase in the 3D group. Additionally, PT and APTT durations were reduced and were more so in the 3D group than in the laparotomy group (p < 0.05). Conclusions When juxtaposed with traditional laparotomy, 3D laparoscopic surgery for early-stage EC appears to be more efficacious, characterized by reduced complications, and expedited recovery. It can effectively mitigate serum tumor marker levels, attenuate the inflammatory response and damage to immune function, foster urinary function recovery, and enhance the quality of life. However, it exerts a more significant influence on the patient's coagulation parameters, necessitating meticulous prevention and treatment strategies for thromboembolic events in clinical settings.

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Introduction Laparoscopic cholecystectomy (LC) is a common procedure used for the treatment of different pathologies caused by gallstones in the gallbladder, and one of the most common indications is acute cholecystitis. The definitive treatment for acute cholecystitis is surgery, and LC is the gold standard. Nevertheless, transoperative complications (like intraoperative bleeding, anatomical abnormalities of the gallbladder, etc.) of LC and some other preoperative factors (like dilatation of bile duct, increased gallbladder wall thickness, etc.) can cause or be a risk factor for conversion to open cholecystectomy (OC). The objective of this study was to determine the risk factors and prevalence associated with the conversion from LC to OC in patients with gallbladder pathology and the indication for LC. Materials and methods This was a prospective cohort study. We included patients of both sexes over 18 years of age with gallbladder disease. To determine the risk factors associated with conversion, we performed a bivariate analysis and then a multivariate analysis. Results The rate of conversion to OC was 4.54%. The preoperative factors associated with conversion, in the bivariate analysis, were common bile duct dilatation (p=0.008), emergency surgery (p=0.014), and smoking (p=0.001); the associated intraoperative variables were: laparoscopic surgery duration (p <0.0001), Calot triangle edema (p=0.033), incapacity to hold the gallbladder with atraumatic laparoscopic tweezers (p=0.036), and choledocholithiasis (p=0.042). Laparoscopic Surgery duration was the only factor with a significant association in the multivariate analysis (p=0.0036); we performed a receiver operating characteristic (ROC) curve analysis and found a cut-off point of 120 minutes for the duration of laparoscopic surgery with a sensitivity and a specificity of 67 and 88%, respectively. Conclusion The prevalence of conversion from LC to OC is similar to that reported in the international literature. The risk factors associated with conversion to OC, in this study, should be confirmed in future clinical studies, in this same population, with a larger sample size.

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RESUMEN La diverticulosis es la presencia de divertículos en el tránsito intestinal, diverticulitis es la inflamación de los divertículos y ocurre en menos del 5% de pacientes con diverticulosis. El tratamiento quirúrgico de la diverticulitis aguda se aplica en los casos complicados. Tradicionalmente la operación de Hartmann es el procedimiento estándar en los casos de Diverticulitis aguda Hinchey III y IV, actualmente se recomienda individualizar el tratamiento quirúrgico en los casos de peritonitis purulenta no fecaloidea siendo el lavado peritoneal laparoscópico una opción factible. Objetivo : Describir los resultados del tratamiento quirúrgico de 4 pacientes con el diagnóstico de diverticulitis aguda Hinchey III sometidos al Lavado peritoneal en un centro privado. Material y métodos: Estudio descriptivo retrospectivo tipo serie de casos. Se recopiló información de historias clínicas para la descripción de los casos. Resultados: En los 4 pacientes intervenidos mediante el Lavado peritoneal laparoscópico, ninguno tuvo complicaciones postoperatorias ni mortalidad. Conclusiones: A juicio de los autores los beneficios del lavado peritoneal laparoscópico repercuten en una adecuada evolución postquirúrgica y generan calidad de vida en los pacientes intervenidos.

SUMMARY Diverticulosis is defined as the presence of diverticula in the intestine, when these diverticula become inflamed diverticulitis occurs, but this complication happens in less than 5% of these patients. Surgical treatment is indicated in complicated diverticulitis cases. Traditionally, the Hartmann procedure is carried out in patients with Hinchey III and IV acute diverticulitis. Currently, individualized surgical procedures are indicated in patients with non-fecal purulent peritonitis with laparoscopic peritoneal lavage as an optional choice. Objective: To report the results of laparoscopic peritoneal lavage in four patients with Hinchey III acute diverticulitis performed at a private clinic. Methods: Case series for which a review of patient clinical files was done. Results: No post-operative complications or mortality was found. Conclusions: based on authors judge, laparoscopic peritoneal lavage leads to an adequate post-operative evolution resulting in better quality of life.

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INTRODUCTION: Laparoscopic surgery is the approach of choice for multiple procedures, being laparoscopic cholecystectomy one of the most frequently performed surgeries. Likewise, video recording of these surgeries has become widespread. Currently, the market offers medical recording devices (MRD) with an approximate cost of 2000 USD, and alternative non-medical recording devices (NMRD) with a cost ranging from 120 to 200 USD. To our knowledge, no comparative studies between the available recording devices have been done. We aim to compare the perception of the quality of videos recorded by MRD and NMRD in a group of surgeons and surgical residents. METHODS: A cross-sectional study was conducted using an online survey to compare recordings from three NMRDs (Elgato 30 fps, AverMedia 60 fps, Hauppauge 30 fps) and one MRD (MediCap 20 fps) during a laparoscopic cholecystectomy. The survey assessed: definition of anatomical structures (DA), fluidity of movements (FM), similarity with the operating room screen (ORsim), and overall quality (OQ). Descriptive and nonparametric analytical statistics tests were applied. Results were analyzed using JMP-15 software. RESULTS: Forty surveys were collected (80% surgeons, 20% residents). NMRDs scored significantly higher than MRD in DA (p = 0.003), FM (p < 0.001), ORsim (p < 0.001), and OQ (p < 0.001). One NMRD was chosen as the highest quality device (70%), and MRD as the poorest (78%). No significant differences were found when analyzing by surgical experience. CONCLUSIONS: In terms of recording laparoscopic procedures, non-medical video recording devices (NMRDs) outperformed medical-grade recording device (MRD) with a higher overall score. This suggests that NMRDs could serve as a cost-effective alternative with superior video quality for recording laparoscopic surgeries.

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Introducción: La cirugía laparoscópica ginecológica permite intervenir a la paciente sin tener que abrir el abdomen, pues consiste en realizar pequeñas incisiones. Actualmente se emplea en enfermedades como el cáncer o en la extracción de quistes y miomas, por lo que se puede aplicar en casi cualquier intervención de cirugía ginecológica. Objetivo: Caracterizar los procedimientos laparoscópicos del Servicio de Ginecología en el Hospital Materno-Infantil Ángel Arturo Aballí en el período comprendido entre enero del 2018 y diciembre del 2021. Métodos: Se realizó un estudio observacional, descriptivo, retrospectivo de corte longitudinal con el fin de describir la actividad asistencial laparoscópica. La muestra fue de 180 pacientes, según el criterio de selección no probabilístico de los investigadores. Resultados: La edad promedio fue 41,6 años. Según los antecedentes, predominó el tamaño del útero con 91,1 por ciento (n = 164). Dentro de las indicaciones quirúrgicas, se encontró la paridad satisfecha en un 34,4 por ciento, seguido del tumor de ovario (18,9 por ciento), las neoplasias intraepiteliales cervicales (13,4 por ciento) y el fibroma uterino sintomático. En cuanto a la cirugía mayor, se encontró la histerectomía abdominal laparoscópica en un 49,0 por ciento (n = 78), seguido de la salpingectomía con un 38,9 por ciento, resultados con significación desde el punto de vista estadístico (p = 0,004). En cuanto a la cirugía menor, el 11,6 por ciento de la muestra recibió la ablación de los focos endometriales. Las complicaciones fueron escasas. Conclusiones: Los procederes laparoscópicos del Servicio de Ginecología del Hospital Materno-Infantil Ángel Arturo Aballí se consideraron adecuados de acuerdo a los indicadores quirúrgicos(AU)

Introduction: Laparoscopic gynecological surgery allows for the patient to undergo surgery without having to open their abdomen, since it consists in making small incisions. It is currently used in diseases such as cancer or in the removal of cysts and myomas; therefore, it can be applied in almost any gynecological surgery. Objective: To characterize the laparoscopic procedures of the gynecology service at Hospital Materno-Infantil Ángel Arturo Aballí, in the period from January 2018 to December 2021. Methods: An observational, descriptive, retrospective and longitudinal study was carried out in order to describe the laparoscopic assistance activity. The sample consisted of 180 patients, according to the researchers' nonprobabilistic selection criteria. Results: The mean age was 41.6 years. Concerning antecedents, uterine size predominated, with 91.1 percent (n = 164). Among surgical indications, satisfied parity was found in 34.4 percent , followed by ovarian tumor (18.9 percent ), cervical intraepithelial neoplasms (13.4 percent ) and symptomatic uterine fibroid. With respect to major surgery, laparoscopic abdominal hysterectomy was found in 49.0 percent (n = 78), followed by salpingectomy, with 38.9 percent ; such results are statistically significant (p = 0.004). Regarding minor surgery, 11.6 percent of the sample received ablation of endometrial focuses. Complications were rare. Conclusions: The laparoscopic procedures of the gynecology service at Hospital Materno-Infantil Ángel Arturo Aballí are considered adequate according to the surgical indicators(AU)

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Introducción: La biopsia ganglionar retroperitoneal es un procedimiento frecuentemente requerido en el estudio de neoplasias; resulta deseable optimizar su rendimiento con baja morbilidad. Este artículo describe la utilidad y complicaciones de biopsias ganglionares retroperitoneales por laparoscopia en una institución oncológica de Latinoamérica. Material y Métodos: Cohorte retrospectiva de pacientes con biopsia ganglionar retroperitoneal o mesentérica laparoscópica entre 2011 y 2021 en el Instituto Nacional de Cancerología, en Bogotá, Colombia. Se recogieron datos demográficos, quirúrgicos, complicaciones y mortalidad a 30 días, resultados histopatológicos y su rol en la clínica. Resultados: Se incluyeron 41 pacientes; 73% con diagnóstico de malignidad, principalmente linfoma. La indicación fue mayormente sospecha de recaída, seguida por sospecha de enfermedad hematológica de novo. Siempre se obtuvo tejido adecuado y suficiente para diagnóstico histológico. Requirieron conversión a laparotomía cinco pacientes (12%). No hubo complicaciones Clavien-Dindo III /IV ni mortalidad a 30 días. Se presentó morbilidad grado I o II en 3 casos (7%) y un incidente intraoperatorio grado III. Conclusión: La naturaleza invasiva y el carácter diagnóstico de la biopsia retroperitoneal laparoscópica, constituyen un desafío frecuente en la práctica del cirujano general. La planeación estratégica e individualizada y la técnica quirúrgica depurada son las claves para lograr el máximo rendimiento, con baja morbimortalidad.

Introduction: Retroperitoneal lymph node biopsy is a frequently required procedure in the study of neoplasms; it is desirable to optimize its performance with low morbidity. This paper describes the usefulness and complications of retroperitoneal lymph node biopsies by laparoscopy in a cancer institution in Latin America. Material and Methods: Retrospective cohort of patients with laparoscopic retroperitoneal or mesenteric lymph node biopsy between 2011 and 2021 at the National Cancer Institute, in Bogotá, Colombia. Demographic and surgical data, complications and 30-day mortality, histopathological results and their clinical role were collected. Results: 41 patients were included; 73% diagnosed with malignancy, mainly lymphoma. The indication was mostly suspected relapse, followed by suspected de novo hematologic disease. Adequate and sufficient tissue was always obtained for histological diagnosis. Five patients (12%) required conversion to laparotomy. There were no Clavien-Dindo III/IV complications or 30-day mortality. Grade I or II morbidity occurred in 3 cases (7%) and a grade III intraoperative incident. Conclusion: The invasive nature and diagnostic character of laparoscopic retroperitoneal biopsy constitute a frequent challenge in the practice of the general surgeon. Strategic and individualized planning and a refined surgical technique are the keys to achieving maximum performance, with low morbidity and mortality.

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Background: Novel studies are helping to consider minimally invasive surgery for treating patients with renal cell carcinoma and venous tumor thrombus. Evidence regarding its feasibility and safety is still sparse and does not include a subclassification for level III thrombi. We aim to compare the safety of laparoscopic vs open surgery in patients with levels I-IIIa thrombus. Materials and Methods: This is a cross-sectional comparative study using single-institutional data on adult patients treated surgically between June 2008 and June 2022. Participants were categorized into open and laparoscopic surgery groups. Primary outcome was difference in the incidence of 30-day major postoperative complications (Clavien-Dindo III-V) between groups. Secondary outcomes were differences in operative time, length of hospital stay, intraoperative blood transfusions, delta hemoglobin level, 30-day minor complications (Clavien-Dindo I-II), estimated overall survival, and progression-free survival between groups. A logistic regression model was performed including adjustment for confounding variables. Results: Overall, 15 patients in the laparoscopic group and 25 patients in the open group were included. Major complications occurred in 24.0% of patients within the open group and 6.7% of patients were treated laparoscopically (p = 0.120). Minor complications arose in 32.0% of patients treated with open surgery and in 13.3% of patients treated in the laparoscopic group (p = 0.162). Although not significant, there was a higher perioperative death rate within open surgery cases. The laparoscopic approach presented a crude odds ratio for major complications of 0.22 (95% confidence interval 0.02-2.1, p = 0.191) compared with open surgery. No differences were found between groups regarding oncologic outcomes. Conclusion: Laparoscopic approach for patients with venous thrombus levels I-IIIa seems to be as safe as open surgery.

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BACKGROUND: Modified thoracoabdominal nerve block through perichondrial approach is a novel fascial plane block and provides abdominal analgesia by blocking thoracoabdominal nerves. Our primary aim was to evaluate the efficacy of M-TAPA on quality of recovery and pain scores in patients who underwent laparoscopic inguinal hernia repair surgery (Trans Abdominal Pre-Peritoneal approach ‒ TAPP). METHODS: Patients with American Society of Anesthesiologists (ASA) physical status I-II aged between 18 and 65 years scheduled for elective TAPP under general anesthesia were enrolled in the study. After intubation, the patients were randomized into two groups: M: M-TAPA group (n = 30) and the control group (n = 30). M-TAPA was performed with total 40 ml 0.25% bupivacaine in the M group. Surgical infiltration was performed in the control group. The primary outcome of the study was the global quality of recovery score, the secondary outcomes were pain scores, rescue analgesic demands, and adverse effects during the 24-h postoperative period. RESULTS: The global quality of recovery scores at 24 h were significantly higher in the M group (p < 0.001). There was a reduction in the median static and dynamic NRS for the first postoperative 8 h in the M group compared to the control group (p < 0.001). The need for rescue analgesia was significantly lower in the M group compared to the control group (13 patients vs. 24 respectively, p < 0.001). The incidence of side effects was significantly higher in the control group (p < 0.001). CONCLUSION: In our study, M-TAPA increased patient recovery scores, and provided pain relief in patients who underwent TAPP. REGISTER NUMBER: NCT05199922.

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Purpose.The aim of this work is to present a new physical laparoscopy simulator with an electromyography (EMG)/accelerometry-based muscle activity recording system, EvalLap EMG-ACC, and perform objective evaluation of laparoscopic skills based on the quantification of muscle activity of participants with different levels of laparoscopic experience. Methods. EMG and ACC signals were obtained from 14 participants (6 experts, 8 medical students) performing circular pattern cutting tasks using a laparoscopic box trainer with the Trigno (Delsys Inc, Natick, MA) portable wireless system of 16 wireless sensors. Sensors were placed on the proximal and distal muscles of the upper extremities. Seven evaluation metrics were proposed and compared between skilled and novice surgeons. Results. The proximal and distal arm muscles (trapezius, deltoids, biceps, and forearms) were most active while executing laparoscopic tasks. Laparoscopic experience was associated with differences in EMG amplitude (Aavg), muscle activity (iEMG), hand acceleration (iACH), user movement (iAC), and muscle fatigue. For the cutting task, the deltoid, bicep, forearm EMG amplitude, and user movement significantly differed between experience groups. Conclusion. This pilot study demonstrates that different muscle groups are preferentially activated during laparoscopic tasks depending on the level of surgical experience. Expert surgeons showed less muscle activity compared with novices. EvalLap EMG-ACC represents a promising means to distinguish surgeons with basic cutting skills from those who have not yet developed these skills.

Assuntos

RESUMO

The validity of the CALMA Veterinary Lap-trainer simulator (CVLTS) for training basic veterinary laparoscopic skills was assessed and compared to a simple collapsible mobile box trainer. Ten veterinarian surgeons with no experience in laparoscopic surgery and four experts with at least two years of experience in minimally invasive surgery (MIS) were included. The training curriculum included object transfer, non-woven gauze cutting with curved scissors, and interrupted and continuous intracorporeal sutures, which were practiced on the CVLTS. The initial and final assessments were carried out in both the CVLTS and in a collapsible mobile simulator. These were video-recorded and evaluated by external experts using the Objective Structured Assessment of Technical Skills (OSATS) and a specific scale evaluation in a double-blinded schedule. The time, angular displacement, number, and movement smoothness were recorded using a hands movement assessment system (HMAS). Through a survey, the face validity and content were evaluated. The data were analyzed by a Pearson's proportions comparison or Mann Whitney U test and a bilateral Student's t-test. The experimental group OSATS, specific scores, and HMAS values, with the exception of the smoothness of movements, significantly improved after training, with no statistically significant differences compared to the expert group. No differences were found between the two simulators. The experts' and experimental participants' CVLTS mean score was 4.8. Our data support the CVLTS validations for laparoscopic surgery basic skills training.