La naturaleza jurídica alimenticia o compensatoria de la porción conyugal en la sucesión por causa de muerte

El presente trabajo de grado, pretende hacer un análisis de la institución del derecho de sucesiones llamado porción conyugal, haciendo especial énfasis en su naturaleza jurídica histórica y la nueva naturaleza compensatoria dada por la Corte Constitucional en Sentencia C-283 de 2011. Posteriormente se propone una visión crítica de esta nueva naturaleza, exponiendo que los fines buscados por la Corte no se concretan con un simple cambio de naturaleza jurídica sino que es necesaria la introducción al ordenamiento de una nueva figura que alcance los fines compensatorios buscados por la Corte Constitucional.This thesis, intends to analyze the institution of inheritance law, called "Porción conyugal", emphasizing on its historical legal nature and the new nature given by the Constitutional Court in decision C-283 of 2011. Subsequently, it is proposed a critical view of this new nature, stating that the objectives sought by the Court do not concrete with a simple change of legal nature, but with the introduction of a new institution that reaches the compensatory goals pursued by the Constitutional Court.Abogado (a)Pregrad

Problema de agencia entre socios y administradores, manejo de los conflictos de interés como parte del deber de lealtad

En el presente trabajo se pretende realizar una revisión acerca del problema de agencia más común en el derecho societario colombiano, los conflictos de interés que se suscitan entre socios y administradores. El estudio sobre el tema busca identificar las situaciones que originan el problema, discutir los efectos generados a partir del problema de agencia y adicionalmente establecer un nexo entre el deber de lealtad de los administradores en la actividad societaria, y el manejo de los conflictos de interés que se generan en su desarrollo. Finalmente buscamos exponer la situación, las soluciones, los incentivos y desincentivos que promueven actuar por interés personal versus el interés de las sociedades y sus socios, tema fundamental en el contexto del problema planteado.In the present work we intend to make a review about the most common agency problem in Colombian corporate law, the conflicts of interest that arise between partners and administrators. The study on the subject seeks to identify the situations that give rise to the problem, to discuss the effects generated from the agency problem and also to establish a link between the duty of loyalty of managers in the corporate activity and the management of conflicts of interes. Finally, we seek to expose the situation, solutions, incentives and disincentives that promote acting for personal interest versus the interest of societies and their partners, a fundamental issue in the context of the problem raised.Especialista en Derecho ComercialEspecializació

Stoma-free survival after anastomotic leak following rectal cancer resection: worldwide cohort of 2470 patients

Background: The optimal treatment of anastomotic leak after rectal cancer resection is unclear. This worldwide cohort study aimed to provide an overview of four treatment strategies applied. Methods: Patients from 216 centres and 45 countries with anastomotic leak after rectal cancer resection between 2014 and 2018 were included. Treatment was categorized as salvage surgery, faecal diversion with passive or active (vacuum) drainage, and no primary/secondary faecal diversion. The primary outcome was 1-year stoma-free survival. In addition, passive and active drainage were compared using propensity score matching (2: 1). Results: Of 2470 evaluable patients, 388 (16.0 per cent) underwent salvage surgery, 1524 (62.0 per cent) passive drainage, 278 (11.0 per cent) active drainage, and 280 (11.0 per cent) had no faecal diversion. One-year stoma-free survival rates were 13.7, 48.3, 48.2, and 65.4 per cent respectively. Propensity score matching resulted in 556 patients with passive and 278 with active drainage. There was no statistically significant difference between these groups in 1-year stoma-free survival (OR 0.95, 95 per cent c.i. 0.66 to 1.33), with a risk difference of -1.1 (95 per cent c.i. -9.0 to 7.0) per cent. After active drainage, more patients required secondary salvage surgery (OR 2.32, 1.49 to 3.59), prolonged hospital admission (an additional 6 (95 per cent c.i. 2 to 10) days), and ICU admission (OR 1.41, 1.02 to 1.94). Mean duration of leak healing did not differ significantly (an additional 12 (-28 to 52) days). Conclusion: Primary salvage surgery or omission of faecal diversion likely correspond to the most severe and least severe leaks respectively. In patients with diverted leaks, stoma-free survival did not differ statistically between passive and active drainage, although the increased risk of secondary salvage surgery and ICU admission suggests residual confounding

Stoma-free Survival After Rectal Cancer Resection With Anastomotic Leakage: Development and Validation of a Prediction Model in a Large International Cohort.

Objective:To develop and validate a prediction model (STOMA score) for 1-year stoma-free survival in patients with rectal cancer (RC) with anastomotic leakage (AL).Background:AL after RC resection often results in a permanent stoma.Methods:This international retrospective cohort study (TENTACLE-Rectum) encompassed 216 participating centres and included patients who developed AL after RC surgery between 2014 and 2018. Clinically relevant predictors for 1-year stoma-free survival were included in uni and multivariable logistic regression models. The STOMA score was developed and internally validated in a cohort of patients operated between 2014 and 2017, with subsequent temporal validation in a 2018 cohort. The discriminative power and calibration of the models' performance were evaluated.Results:This study included 2499 patients with AL, 1954 in the development cohort and 545 in the validation cohort. Baseline characteristics were comparable. One-year stoma-free survival was 45.0% in the development cohort and 43.7% in the validation cohort. The following predictors were included in the STOMA score: sex, age, American Society of Anestesiologist classification, body mass index, clinical M-disease, neoadjuvant therapy, abdominal and transanal approach, primary defunctioning stoma, multivisceral resection, clinical setting in which AL was diagnosed, postoperative day of AL diagnosis, abdominal contamination, anastomotic defect circumference, bowel wall ischemia, anastomotic fistula, retraction, and reactivation leakage. The STOMA score showed good discrimination and calibration (c-index: 0.71, 95% CI: 0.66-0.76).Conclusions:The STOMA score consists of 18 clinically relevant factors and estimates the individual risk for 1-year stoma-free survival in patients with AL after RC surgery, which may improve patient counseling and give guidance when analyzing the efficacy of different treatment strategies in future studies