Factores predictores de estancia hospitalaria prolongada tras resección pulmonar anatómica / Predictive factors of prolonged postoperative length of stay after anatomic pulmonary resection

Introducción: El objetivo de este estudio es crear un modelo predictivo de estancia postoperatoria prolongada (EPP) en pacientes sometidos a resección pulmonar anatómica, validarlo en una serie externa y evaluar la influencia de la EPP en el reingreso y la mortalidad a 90 días. Métodos: Se incluyeron todos los pacientes registrados en la base de datos del GEVATS dados de alta tras la intervención. Definimos la EPP como la permanencia postoperatoria en días por encima del percentil 75 de estancia de todos los pacientes de la serie. Se realizó un análisis univariable y multivariable mediante regresión logística y el modelo fue validado en una cohorte externa. Se analizó la posible asociación entre la EPP y el reingreso y la mortalidad a 90 días. Resultados: Se incluyeron en el estudio 3473 pacientes. La mediana de estancia postoperatoria fue de 5 días (RIQ:4-7). Ochocientos quince pacientes tuvieron una EPP (≥8 días), de los que el 79,9% presentaron complicaciones postoperatorias. El modelo final incluyó como variables: edad, IMC, sexo varón, VEF1%ppo, DLCO%ppo y toracotomía; el AUC en la serie de derivación fue de 0,684 (IC95%: 0,661-0,706) y en la de validación de 0,73 (IC95%: 0,681-0,78). Se encontró una asociación significativa entre la EPP y el reingreso (p<0,000) y la mortalidad a 90 días (p<0,000). Conclusiones: Las variables edad, IMC, sexo varón, VEF1%ppo, DLCO%ppo y toracotomía afectan a la EPP. La EPP se asocia con un incremento del riesgo de reingreso y mortalidad a 90 días. El 20% de las EPP no se relacionan con la ocurrencia de complicaciones postoperatorias. (AU)

Introduction: The objective of this study is to create a predictive model of prolonged postoperative length of stay (PLOS) in patients undergoing anatomic lung resection, to validate it in an external series and to evaluate the influence of PLOS on readmission and 90-day mortality. Methods: All patients registered in the GEVATS database discharged after the intervention were included. We define PLOS as the postoperative stay in days above the 75th percentile of stay for all patients in the series. A univariate and multivariate analysis was performed using logistic regression and the model was validated in an external cohort. The possible association between PPE and readmission and mortality at 90 days was analyzed. Results: 3473 patients were included in the study. The median postoperative stay was 5 days (IQR: 4–7). 815 patients had PLOS (≥8 days), of which 79.9% had postoperative complications. The final model included as variables: age, BMI, male sex, ppoFEV1%, ppoDLCO% and thoracotomy; the AUC in the referral series was 0.684 (95% CI: 0.661–0.706) and in the validation series was 0.73 (95% CI: 0.681–0.78). A significant association was found between PLOS and readmission (p<.000) and 90-day mortality (p<.000). Conclusions: The variables age, BMI, male sex, ppoFEV1%, ppoDLCO% and thoracotomy affect PLOS. PLOS is associated with an increased risk of readmission and 90-day mortality. 20% of PLOS are not related to the occurrence of postoperative complications. (AU)

Utilidad de la fluorescencia cercana al infrarrojo para la identificación del bronquio segmentario en segmentectomías mínimamente invasivas / Usefulness of near-infrared fluorescence for identifying the segmental bronchus in minimally invasive segmentectomy

Las resecciones sublobares anatómicas mínimamente invasivas han ganado relevancia durante los últimos años gracias al avance de las técnicas de imagen, los programas de cribado y el aumento de segundas neoplasias. La identificación precisa del bronquio segmentario o subsegmentario objeto de resección es vital para obtener resultados óptimos en segmentectomías y subsegmentectomías. Dada la complejidad y la posibilidad de variaciones anatómicas, varios autores han publicado distintos métodos para identificar el bronquio objetivo de la resección. Sin embargo, estos métodos tienen ciertas limitaciones. El presente artículo describe una nueva técnica rápida, efectiva, con bajo riesgo de complicaciones y sin coste adicional para la identificación de los bronquios segmentarios en segmentectomías mínimamente invasivas. (AU)

Minimally invasive anatomical sublobar resections have gained relevance in recent years mainly due to advances in imaging techniques, screening programs and the increase in second neoplasms. Accurate identification of the segmental or subsegmental bronchus is vital to guarantee optimal results in segmentectomies and subsegmentectomies. Given the complexity and the possibility of anatomical variations, several authors have published different methods to identify the target bronchus. However, these methods have certain limitations. This article describes a new rapid and effective technique, with a low risk of complications and without additional cost, for the identification of segmental bronchi in minimally invasive segmentectomies. (AU)

Factores predictores de estancia hospitalaria prolongada tras resección pulmonar anatómica / Predictive factors of prolonged postoperative length of stay after anatomic pulmonary resection

Introducción: El objetivo de este estudio es crear un modelo predictivo de estancia postoperatoria prolongada (EPP) en pacientes sometidos a resección pulmonar anatómica, validarlo en una serie externa y evaluar la influencia de la EPP en el reingreso y la mortalidad a 90 días. Métodos: Se incluyeron todos los pacientes registrados en la base de datos del GEVATS dados de alta tras la intervención. Definimos la EPP como la permanencia postoperatoria en días por encima del percentil 75 de estancia de todos los pacientes de la serie. Se realizó un análisis univariable y multivariable mediante regresión logística y el modelo fue validado en una cohorte externa. Se analizó la posible asociación entre la EPP y el reingreso y la mortalidad a 90 días. Resultados: Se incluyeron en el estudio 3473 pacientes. La mediana de estancia postoperatoria fue de 5 días (RIQ:4-7). Ochocientos quince pacientes tuvieron una EPP (≥8 días), de los que el 79,9% presentaron complicaciones postoperatorias. El modelo final incluyó como variables: edad, IMC, sexo varón, VEF1%ppo, DLCO%ppo y toracotomía; el AUC en la serie de derivación fue de 0,684 (IC95%: 0,661-0,706) y en la de validación de 0,73 (IC95%: 0,681-0,78). Se encontró una asociación significativa entre la EPP y el reingreso (p<0,000) y la mortalidad a 90 días (p<0,000). Conclusiones: Las variables edad, IMC, sexo varón, VEF1%ppo, DLCO%ppo y toracotomía afectan a la EPP. La EPP se asocia con un incremento del riesgo de reingreso y mortalidad a 90 días. El 20% de las EPP no se relacionan con la ocurrencia de complicaciones postoperatorias. (AU)

Introduction: The objective of this study is to create a predictive model of prolonged postoperative length of stay (PLOS) in patients undergoing anatomic lung resection, to validate it in an external series and to evaluate the influence of PLOS on readmission and 90-day mortality. Methods: All patients registered in the GEVATS database discharged after the intervention were included. We define PLOS as the postoperative stay in days above the 75th percentile of stay for all patients in the series. A univariate and multivariate analysis was performed using logistic regression and the model was validated in an external cohort. The possible association between PPE and readmission and mortality at 90 days was analyzed. Results: 3473 patients were included in the study. The median postoperative stay was 5 days (IQR: 4–7). 815 patients had PLOS (≥8 days), of which 79.9% had postoperative complications. The final model included as variables: age, BMI, male sex, ppoFEV1%, ppoDLCO% and thoracotomy; the AUC in the referral series was 0.684 (95% CI: 0.661–0.706) and in the validation series was 0.73 (95% CI: 0.681–0.78). A significant association was found between PLOS and readmission (p<.000) and 90-day mortality (p<.000). Conclusions: The variables age, BMI, male sex, ppoFEV1%, ppoDLCO% and thoracotomy affect PLOS. PLOS is associated with an increased risk of readmission and 90-day mortality. 20% of PLOS are not related to the occurrence of postoperative complications. (AU)

Utilidad de la fluorescencia cercana al infrarrojo para la identificación del bronquio segmentario en segmentectomías mínimamente invasivas / Usefulness of near-infrared fluorescence for identifying the segmental bronchus in minimally invasive segmentectomy

Las resecciones sublobares anatómicas mínimamente invasivas han ganado relevancia durante los últimos años gracias al avance de las técnicas de imagen, los programas de cribado y el aumento de segundas neoplasias. La identificación precisa del bronquio segmentario o subsegmentario objeto de resección es vital para obtener resultados óptimos en segmentectomías y subsegmentectomías. Dada la complejidad y la posibilidad de variaciones anatómicas, varios autores han publicado distintos métodos para identificar el bronquio objetivo de la resección. Sin embargo, estos métodos tienen ciertas limitaciones. El presente artículo describe una nueva técnica rápida, efectiva, con bajo riesgo de complicaciones y sin coste adicional para la identificación de los bronquios segmentarios en segmentectomías mínimamente invasivas. (AU)

Minimally invasive anatomical sublobar resections have gained relevance in recent years mainly due to advances in imaging techniques, screening programs and the increase in second neoplasms. Accurate identification of the segmental or subsegmental bronchus is vital to guarantee optimal results in segmentectomies and subsegmentectomies. Given the complexity and the possibility of anatomical variations, several authors have published different methods to identify the target bronchus. However, these methods have certain limitations. This article describes a new rapid and effective technique, with a low risk of complications and without additional cost, for the identification of segmental bronchi in minimally invasive segmentectomies. (AU)

Predictive factors of prolonged postoperative length of stay after anatomic pulmonary resection.

INTRODUCTION: The objective of this study is to create a predictive model of prolonged postoperative length of stay (PLOS) in patients undergoing anatomic lung resection, to validate it in an external series and to evaluate the influence of PLOS on readmission and 90-day mortality. METHODS: All patients registered in the GEVATS database discharged after the intervention were included. We define PLOS as the postoperative stay in days above the 75th percentile of stay for all patients in the series. A univariate and multivariate analysis was performed using logistic regression and the model was validated in an external cohort. The possible association between PLOS and readmission and mortality at 90 days was analyzed. RESULTS: 3473 patients were included in the study. The median postoperative stay was 5 days (IQR: 4-7). 815 patients had PLOS (≥8 days), of which 79.9% had postoperative complications. The final model included as variables: age, BMI, male sex, ppoFEV1%, ppoDLCO% and thoracotomy; the AUC in the referral series was 0.684 (95% CI: 0.661-0.706) and in the validation series was 0.73 (95% CI: 0.681-0.78). A significant association was found between PLOS and readmission (p < .000) and 90-day mortality (p < .000). CONCLUSIONS: The variables age, BMI, male sex, ppoFEV1%, ppoDLCO% and thoracotomy affect PLOS. PLOS is associated with an increased risk of readmission and 90-day mortality. 20% of PLOS are not related to the occurrence of postoperative complications.

Usefulness of near-infrared fluorescence for identifying the segmental bronchus in minimally invasive segmentectomy.

Minimally invasive anatomical sublobar resections have gained relevance in recent years mainly due to advances in imaging techniques, screening programs and the increase in second neoplasms. Accurate identification of the segmental or subsegmental bronchus is vital to guarantee optimal results in segmentectomies and subsegmentectomies. Given the complexity and the possibility of anatomical variations, several authors have published different methods to identify the target bronchus. However, these methods have certain limitations. This article describes a new rapid and effective technique, with a low risk of complications and without additional cost, for the identification of segmental bronchi in minimally invasive segmentectomies.

Cirugía robótica endotorácica en la patología de tiroides y paratiroides / Robotic thoracic surgery in thyroid and parathyroid pathology

Introducción y objetivo: Durante la última década se ha producido una amplia difusión de los abordajes torácicos mínimamente invasivos para el tratamiento de enfermedades pulmonares y mediastínicas. Clásicamente, la patología quirúrgica torácica derivada de afecciones de tiroides y paratiroides ha sido tratada mediante abordajes abiertos como la esternotomía, la cervicoesternotomía y la toracotomía. Sin embargo, en los últimos años, la cirugía robótica ha surgido como una nueva vía de abordaje mínimamente invasiva que aporta resultados similares y ventajas significativas sobre otros abordajes mínimamente invasivos como la laparoscopia y la videotoracoscopia. Su aplicabilidad en el tratamiento quirúrgico de lesiones mediastínicas ha quedado ampliamente demostrada en la literatura. El objetivo del presente artículo es describir las indicaciones de la cirugía robótica torácica en la patología tiroidea y paratiroidea, así como comentar los principales aspectos técnicos relacionados con estos procedimientos.Síntesis: La cirugía robótica torácica está indicada especialmente en casos de “bocios olvidados” y de bocios ectópicos. En casos de bocios cérvico-mediastínicos el abordaje combinado cervical y torácico robótico ha demostrado ser una opción factible y segura. Por lo que respecta a las.paratiroides ectópicas de localización mediastínica, el abordaje robótico ofrece ventajas significativas como la visión en 3D y la optimización de la maniobrabilidad de instrumentos que facilitan la visualización y disección de la glándula.Conclusiones: La cirugía robótica constituye un abordaje mínimamente invasivo eficaz y seguro para el tratamiento de la patología tiroidea y paratiroidea de localización mediastínica y podría constituir el abordaje de elección en pacientes con bocios olvidados, bocios ectópicos y adenomas paratiroideos de localización mediastínica. (AU)

Introduction and objective: During the last decade there has been a wide spread of minimally invasive thoracic approaches for the treatment of pulmonary and mediastinal diseases. Classi-cally, thoracic surgical pathology derived from thyroid and parathyroid diseases has been treated by open approaches such as sternotomy, cervicoesternotomy and thoracotomy. However, in recent years, robotic surgery has emerged as a new route of minimally invasive approach that provides similar results and significant advantages over other minimally invasive approaches such as laparoscopy and videothoracos-copy. Its applicability in the surgical treatment of mediastinal lesions has been amply demonstrated in the literature. The aim of this article is to describe the indications of thoracic robotic surgery in thyroid and parathyroid pathology, as well as to comment on the main technical aspects related to these procedures. Synthesis: Robotic thoracic surgery is especially indicated in cases of «forgotten goiters» and ectopic goiters. In cases of cervical-mediastinal goiters, the combined cervical and thoracic robotic approach has been shown to be a feasible and safe option. With regard to mediastinal ectopic parathyroids, the robotic approach offers significant advantages such as 3D vision and the optimization of the maneuverability of instruments that facilitate the visualization and dissection of the gland. Conclusions: Robotic surgery is an effective and safe minimally invasive approach for the treatment of thyroid and parathyroid pathology of mediastinal location and could constitute the approach of choice in patients with forgotten goiters, ectopic goiters and mediastinal parathyroid adenomas. (AU)

Predictive factors of pathological complete response after induction (ypT0N0M0) in non-small cell lung cancer and short-term outcomes: Results of the Spanish Group of Video-assisted Thoracic Surgery (GE-VATS).

INTRODUCTION: To analyze the predictors of pCR in NSCLC patients who underwent anatomical lung resection after induction therapy and to evaluate the postoperative results of these patients. METHODS: All patients prospectively registered in the database of the GE-VATS working group undergone anatomic lung resection by NSCLC after induction treatment and recruited between 12/20/2016 and 3/20/2018 were included in the study. The population was divided into two groups: patients who obtained a complete pathological response after induction (pCR) and patients who did not obtain a complete pathological response after induction (non-pCR). A multivariate analysis was performed using a binary logistic regression to determine the predictors of pCR and the postoperative results of patients were analyzed. RESULTS: Of the 241 patients analyzed, 36 patients (14.9%) achieved pCR. Predictive factors for pCR are male sex (OR: 2.814, 95% CI: 1.015-7.806), histology of squamous carcinoma (OR: 3.065, 95% CI: 1.233-7.619) or other than adenocarcinoma (OR: 5.788, 95% CI: 1.878-17.733) and induction therapy that includes radiation therapy (OR: 4.096, 95% CI: 1.785-9.401) and targeted therapies (OR: 7.625, 95% CI: 2.147-27.077). Prevalence of postoperative pulmonary complications was higher in patients treated with neoadjuvant chemo-radiotherapy (p = 0.032). CONCLUSIONS: Male sex, histology of squamous carcinoma or other than ADC, and induction therapy that includes radiotherapy or targeted therapy are positive predictors for obtaining pCR. Induction chemo-radiotherapy is associated with a higher risk of postoperative pulmonary complications.

Hallazgo intraoperatorio inesperado de un trombo tumoral en vena pulmonar durante una lobectomía robótica / Unexpected Intraoperative Finding of a Pulmonary Vein Tumor Thrombus During a Robotic Lobectomy

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[Translated article] Unexpected Intraoperative Finding of a Pulmonary Vein Tumor Thrombus During a Robotic Lobectomy / Hallazgo intraoperatorio inesperado de un trombo tumoral en vena pulmonar durante una lobectomía robótica

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Mortality predictors in complicated patients after anatomical lung resection / Variables predictivas de muerte en pacientes complicados tras resección pulmonar anatómica

Introduction: Failure to rescue (FTR), defined as the mortality rate among patients suffering from postoperative complications, is considered an indicator of the quality of surgical care. The aim of this study was to investigate the risk factors associated with FTR after anatomical lung resections.Method: Patients undergoing anatomical lung resection at our center between 1994 and 2018 were included in the study. Postoperative complications were classified as minor (grade I and II) and major (grade IIIA to V), according to the standardized classification of postoperative morbidity. Patients who died after a major complication were considered FTR. A stepwise logistic regression model was created to identify FTR predictors. Independent variables included in the multivariate analysis were age, body mass index, cardiac, renal, and cerebrovascular comorbidity, ppoFEV1%, VATS approach, extended resection, pneumonectomy, and reintervention. A non-parametric ROC curve was constructed to estimate the predictive capacity of the model.Results: A total of 2.569 patients were included, of which 223 (8.9%) had major complications and 49 (22%) could not be rescued. Variables associated with FTR were: age (OR: 1.07), history of cerebrovascular accident (OR: 3.53), pneumonectomy (OR: 6.67), and reintervention (OR: 12.26). The area under the ROC curve was 0.82 (95% CI: 0.77–0.88).Conclusions: Overall, 22% of patients with major complications following anatomical lung resection in this series did not survive until discharge. Pneumonectomy and reintervention are the most significant risk factors for FTR. (AU)

Introducción: El fallo en el rescate (FTR) definido como la tasa de fallecimientos entre los pacientes que sufren una complicación postoperatoria, es considerado un indicador de la calidad de los cuidados quirúrgicos. El objetivo de este estudio es investigar los factores de riesgo asociados al FTR después de resecciones pulmonares anatómicas.Método: Se incluyeron en el estudio pacientes sometidos a resección pulmonar anatómica en nuestro centro entre 1994 y 2018. Las complicaciones postoperatorias se clasificaron en menores (grados I y II) y mayores (grados IIIa a V) según la clasificación estandarizada de morbilidad postoperatoria. Los casos que fallecieron tras una complicación mayor fueron considerados FTR. Se creó un modelo de regresión logística por pasos para identificar los factores predictores de FTR. Se consideraron variables independientes en el análisis multivariante la edad, índice de masa corporal, comorbilidad cardiaca, renal, cerebrovascular, VEF1ppo%, abordaje VATS, resección extendida, neumonectomía y reintervención. Se construyó una curva ROC no paramétrica para estimar la capacidad predictiva del modelo.Resultados: Se analizaron 2.569 pacientes. En total, 223 casos (8,9%) tuvieron complicaciones mayores y 49 (22%) no pudieron ser rescatados. Las variables asociadas con FTR fueron: edad (OR: 1,07), antecedente de ACV (OR: 3,53), neumonectomía (OR: 6,67) y reintervención (OR: 12,26). El área bajo la curva de la curva ROC fue 0,82 (IC 95%: 0,77–0,88).Conclusiones: 22% de los pacientes que presentan complicaciones mayores tras la resección pulmonar anatómica en esta serie no sobreviven al alta. La neumonectomía y la reintervención son los factores de riesgo más potentes para FTR. (AU)

Resecciones pulmonares anatómicas por vía robótica: análisis de la curva de aprendizaje / Robotic anatomical lung resections: Analysis of the learning curve

Introducción: La cirugía robótica se ha convertido en una vía de abordaje segura y efectiva para el tratamiento de la patología quirúrgica pulmonar. Sin embargo, la adopción de nuevas técnicas quirúrgicas requiere de la evaluación de la curva de aprendizaje. El objetivo de este estudio es analizar la curva de aprendizaje de las resecciones pulmonares anatómicas por vía robótica. Métodos: Análisis retrospectivo de todas las resecciones pulmonares anatómicas por vía robótica realizadas por un mismo cirujano entre junio de 2018 y marzo de 2020. La curva de aprendizaje se evaluó utilizando gráficas CUSUM para estimar los cambios en la tendencia del tiempo y los fallos quirúrgicos y la aparición de complicaciones cardiorrespiratorias postoperatorias a lo largo de la secuencia de casos. Resultados: El estudio incluyó un total de 73 casos. La mediana de duración de todas las intervenciones fue de 120min (rango intercuartílico: 90-150min), la prevalencia de fallo quirúrgico fue del 23,29%, mientras que 4/73 pacientes presentaron alguna complicación cardiorrespiratoria postoperatoria. Con base en el análisis CUSUM, la curva de aprendizaje fue dividida en 3 fases diferentes: fase i (desde la primera hasta la 14.a intervención), fase ii (entre la 15.a y la 30.a intervención) y fase iii (a partir de la 31.a intervención). Conclusiones: La curva de aprendizaje para las resecciones pulmonares anatómicas por vía robótica puede dividirse en 3 fases. La competencia técnica que asegura resultados perioperatorios satisfactorios se consiguió en la fase iii, a partir de la 31.a intervención. (AU)

Introduction: Robotic surgery has become a safe and effective approach for the treatment of pulmonary surgical pathology. However, the adoption of new surgical techniques requires the evaluation of the learning curve. The objective of this study is to analyze the learning curve of robotic anatomical lung resections. Methods: Retrospective analysis of all robotic anatomical lung resections performed by the same surgeon between June 2018 and March 2020. The learning curve was evaluated using CUSUM charts to estimate trend changes in surgical time, surgical failure and the occurrence of post-operative cardiorespiratory complications throughout the sequence of cases. Results: The study included a total of 73 cases. The median duration of all complications was 120min (interquartile range: 90-150min), the prevalence of surgical failure was 23.29%, while 4/73 patients had any postoperative cardiorespiratory complication. Based on the CUSUM analysis, the learning curve was divided into 3 different phases: phase i (from the first to the 14th intervention), phase ii (between the 15th and 30th intervention) and phase iii (from the 31st intervention). Conclusions: The learning curve for robotic anatomical lung resections can be divided into 3 phases. The technical competence that guarantees satisfactory perioperative outcomes was achived in phase iii from the 31st intervention. (AU)

Robotic anatomical lung resections: Analysis of the learning curve.

INTRODUCTION: Robotic surgery has become a safe and effective approach for the treatment of pulmonary surgical pathology. However, the adoption of new surgical techniques requires the evaluation of the learning curve. The objective of this study is to analyze the learning curve of robotic anatomical lung resections. METHODS: Retrospective analysis of all robotic anatomical lung resections performed by the same surgeon between June 2018 and March 2020. The learning curve was evaluated using CUSUM charts to estimate trend changes in surgical time, surgical failure and the occurrence of post-operative cardiorespiratory complications throughout the sequence of cases. RESULTS: The study included a total of 73 cases. The median duration of all complications was 120 min (interquartile range: 90-150 min), the prevalence of surgical failure was 23.29%, while 4/73 patients had any postoperative cardiorespiratory complication. Based on the CUSUM analysis, the learning curve was divided into 3 different phases: phase i (from the first to the 14th intervention), phase ii (between the 15th and 30th intervention) and phase iii (from the 31st intervention). CONCLUSIONS: The learning curve for robotic anatomical lung resections can be divided into 3 phases. The technical competence that guarantees satisfactory perioperative outcomes was achived in phase iii from the 31st intervention.

El «efecto día de la semana» no tiene impacto en la aparición de complicaciones o mortalidad tras la resección pulmonar: estudio de cohortes histórico / The «Weekday Effect» Does Not Have an Impact on the Development of Complications or Mortality After Pulmonary Resection: Retrospective Cohort Study

Objetivo: Determinar si la cirugía de resección pulmonar anatómica electiva llevada a cabo al final de la semana se asocia con una mayor morbimortalidad postoperatoria que la cirugía realizada al inicio de la semana.Método: Estudio de cohortes histórico en el que se incluyeron todos los pacientes sometidos a resección pulmonar anatómica entre el 1 de enero de 2013 y 1 de noviembre de 2018 en nuestro centro. Se consideraron «expuestos» los pacientes intervenidos al final de la semana (jueves o viernes) y «no expuestos» los intervenidos al inicio de la semana (lunes, martes o miércoles). Se comparó la probabilidad de complicaciones cardiorrespiratorias y muerte operatoria (30días) en las dos cohortes calculada mediante los modelos de riesgo Eurolung1 y2. Como variables de resultado se estudiaron la mortalidad a 30días y la ocurrencia de complicaciones cardiorrespiratorias relacionadas con la técnica postoperatoria. Se calculó la incidencia de estos efectos adversos para la serie global y para ambas cohortes y se determinó el riesgo relativo (RR) y su intervalo de confianza al 95% (IC95%).Resultados: La mortalidad global de la serie fue del 0,9% (10/1.172), la incidencia de complicaciones cardiorrespiratorias fue del 10,2% (120/1.172) y la de complicaciones técnicas, del 20,6% (242/1.172). El RR calculado para las complicaciones cardiorrespiratorias, técnicas y mortalidad en expuestos y no expuestos fue: 0,914 (IC95%: 0,804-1,039), 0,996 (IC95%: 0,895-1,107) y 0,911 (IC95%: 0,606-1,37), respectivamente.Conclusiones: Los pacientes intervenidos al final de la semana no presentan un mayor riesgo de efectos adversos postoperatorios. (AU)

Objective: To determine whether elective anatomic pulmonary resection surgery carried out at the end of the week is associated with a higher mortality and postoperative morbidity than surgery performed at the beginning of the week. Method: Historical cohort study. All patients undergoing anatomical pulmonary resection between January 2013 and November 2018 in our center were included. Patients operated at the end of the week (Thursday or Friday) were considered «not exposed» and patients operated at the beginning of the week (Monday, Tuesday or Wednesday) were considered «exposed». The likelihood of cardiorespiratory complications and operative death (30days) was compared in the two cohorts calculated using the Eurolung1 and2 risk models. 30-day mortality and the occurrence of cardiorespiratory and technical complications were studied as outcome variables. The incidence of these adverse effects was calculated for the overall series and for both cohorts, and the relative risk (RR) and its 95% confidence interval (95%CI) were determined. Results: The overall mortality of the series was 0.9% (10/1172), the incidence of cardiorespiratory complications was 10.2% (120/1172) and that of technical complications was 20.6% (242/1172). The RR calculated for cardiorespiratory, technical complications and mortality in exposed and unexposed subjects was: 0.914 (95%CI: 0.804-1.039), 0.996 (95%CI: 0.895-1.107) and 0.911 (95%CI: 0.606-1.37), respectively. Conclusions: Patients operated at the end of the week do not present a higher risk of postoperative adverse effects. (AU)

Predictive factors of pathological complete response after induction (ypT0N0M0) in non-small cell lung cancer and short-term outcomes: results of the Spanish Group of Video-assisted Thoracic Surgery (GE-VATS). / Factores predictores de respuesta completa patológica tras inducción (ypT0N0M0) en cáncer de pulmón no microcítico y resultados a corto plazo: resultados del Grupo Español de Cirugía Torácica Videoasistida (GE-VATS).

INTRODUCTION: To analyze the predictors of pathological complete response (pCR) in not small cells lung carcinoma (NSCLC) patients who underwent anatomical lung resection after induction therapy and to evaluate the postoperative results of these patients. METHODS: All patients prospectively registered in the database of the GE-VATS working group undergone anatomic lung resection by NSCLC after induction treatment and recruited between December 20th 2016, and March 20th 2018, were included in the study. The population was divided into two groups: patients who obtained a complete pathological response after induction (pCR) and patients who did not obtain a complete pathological response after induction (non-pCR). A multivariate analysis was performed using a binary logistic regression to determine the predictors of pCR and the postoperative results of patients were analyzed. RESULTS: Of the 241 patients analyzed, 36 patients (14.9%) achieved pCR. Predictive factors for pCR are male sex (OR 2.814, 95% CI 1.015-7.806), histology of squamous carcinoma (OR 3.065, 95% CI 1.233-7.619) or other than adenocarcinoma (ADC) (OR 5.788, 95% CI 1.878-17.733) and induction therapy that includes radiation therapy (OR 4.096, 95% CI 1.785-9.401) and targeted therapies (OR 7.625, 95% CI 2.147-27.077). Prevalence of postoperative pulmonary complications was higher in patients treated with neoadjuvant chemo-radiotherapy (p = 0.032). CONCLUSIONS: Male sex, histology of squamous carcinoma or other than ADC, and induction therapy that includes radiotherapy or targeted therapy are positive predictors for obtaining pCR. Induction chemo-radiotherapy is associated with a higher risk of postoperative pulmonary complications.

Mortality predictors in complicated patients after anatomical lung resection.

INTRODUCTION: Failure to rescue (FTR), defined as the mortality rate among patients suffering from postoperative complications, is considered an indicator of the quality of surgical care. The aim of this study was to investigate the risk factors associated with FTR after anatomical lung resections. METHOD: Patients undergoing anatomical lung resection at our center between 1994 and 2018 were included in the study. Postoperative complications were classified as minor (grade I and II) and major (grade IIIA to V), according to the standardized classification of postoperative morbidity. Patients who died after a major complication were considered FTR. A stepwise logistic regression model was created to identify FTR predictors. Independent variables included in the multivariate analysis were age, body mass index, cardiac, renal, and cerebrovascular comorbidity, ppoFEV1%, VATS approach, extended resection, pneumonectomy, and reintervention. A non-parametric ROC curve was constructed to estimate the predictive capacity of the model. RESULTS: A total of 2.569 patients were included, of which 223 (8.9%) had major complications and 49 (22%) could not be rescued. Variables associated with FTR were: age (OR: 1.07), history of cerebrovascular accident (OR: 3.53), pneumonectomy (OR: 6.67), and reintervention (OR: 12.26). The area under the ROC curve was 0.82 (95% CI: 0.77-0.88). CONCLUSIONS: Overall, 22% of patients with major complications following anatomical lung resection in this series did not survive until discharge. Pneumonectomy and reintervention are the most significant risk factors for FTR.