Evaluation of deployment capability of a novel outside-the-scope, detachable catheter system for ablation of lung lesions in ex vivo human lung models.

Objectives: Effective transbronchial ablation of lung nodules requires precise catheter delivery to the target lesion and freedom from the bronchoscope for safety throughout the procedure and to allow for multiple catheter insertions. A fully detachable, outside-the-scope (OTS) probe system was developed that attaches to a flexible bronchoscope. Using this system, the operator can deploy the probe in the target and completely detach it from the scope. Our aim was to demonstrate the endobronchial deployment accuracy and feasibility of an OTS, detachable, simulated ablation catheter driven to peripheral lung targets in ex vivo-ventilated human lung models. Methods: A balloon catheter inflated with radiopaque contrast was used as a simulated peripheral target in freshly explanted lungs from lung transplant recipients. A simulated ablation catheter was positioned outside and aligned to the tip of the bronchoscope using the OTS system. Under fluoroscopic guidance, the bronchoscope and the catheter were driven toward the target in mechanically ventilated lungs. Once the catheter tip was confirmed within the target, the OTS system was released and the probe was detached from the scope. The bronchoscope was retracted and fluoroscopy was used to confirm the position of the catheter. Results: Twelve peripheral targets were simulated. The ablation catheter was successfully deployed with its tip positioned within 5 mm from the target and confirmed stability during multiple cycles of ventilation. Conclusions: A novel, detachable, OTS system can be successfully deployed in peripheral lung targets with potential clinical applications for multiple procedures in advanced bronchoscopy where scope freedom is advantageous.

Single-Stage Posterior Approach for the En Bloc Resection and Spinal Reconstruction of T4 Pancoast Tumors Invading the Spine.

STUDY DESIGN: Retrospective cohort study. PURPOSE: This study aimed to evaluate the outcomes of patients who had T4 Pancoast tumors invading the spine and underwent en bloc resection and spinal stabilization through a single-stage posterior approach. OVERVIEW OF LITERATURE: Surgical resection for Pancoast tumors affecting the spine has been successfully performed in two stages involving spinal reconstruction and tumor resection. However, reports have rarely presented the results of en bloc resection combined with spinal stabilization for T4 Pancoast tumors invading the spine through a single-stage posterior approach. METHODS: Patients who had T4N0M0 Pancoast tumors invading the spine and underwent a single-stage posterior approach were retrospectively recruited. The following data were obtained and examined: demographics, tumor histology, preoperative and postoperative therapy, complications, spinal reconstruction technique, tumor resection extent, survival time, and disease recurrence. RESULTS: Eighteen patients were included. The mean population age was 61±17 years, and the most common pathological type was adenocarcinoma (61.1%). Complete resection (R0) was obtained in 15 patients (83.3%), positive surgical margins (R1) were found in three patients (16.7%), and the 90-day mortality rate was 0%. Postoperative major complications were detected in 12 patients (66.7%), who required reoperation. The mean survival time was 67±24 months, but the median survival time was not reached. Among the patients, 10 (55.6%) are still alive at the end of the study. The 2- and 5-year actual survival rates were 59% (95% confidence interval [CI], 35.7%-82.3%) and 52.5% (95% CI, 28.4%-76.6%), respectively. CONCLUSIONS: En bloc resection and spinal stabilization through a single-stage posterior approach might be effective for T4 Pancoast tumors invading the spine.

Anatomic pulmonary resection via video-assisted thoracic surgery: analysis of 117 cases at a referral center in Brazil.

OBJECTIVE:: To describe our experience with video-assisted thoracic surgery (VATS) for anatomic pulmonary resection at a referral center for thoracic surgery in Brazil. METHODS:: All patients who underwent anatomic pulmonary resection by VATS between 2010 and 2015 were included. Clinical and pathological data, as well as postoperative complications, were analyzed. RESULTS:: A total of 117 pulmonary resections by VATS were performed, of which 98 were lobectomies and 19 were anatomic segmentectomies. The mean age of the patients was 63.6 years (range, 15-86 years). Females predominated (n = 69; 59%). The mean time to chest tube removal was 2.47 days, and the mean length of ICU stay was 1.88 days. The mean length of hospital stay was 4.48 days. Bleeding ≥ 400 mL occurred in 15 patients. Conversion to thoracotomy was required in 4 patients. CONCLUSIONS:: Our results are similar to those published in major international studies, indicating that VATS is an important strategy for pulmonary resection. They also show that VATS can be safely performed with adequate training. This technique should be used more often for the treatment of lung diseases in Brazil. OBJETIVO:: Relatar a experiência com cirurgia torácica videoassistida (CTVA) para ressecções pulmonares anatômicas em um centro nacional de referência de cirurgia torácica no Brasil. MÉTODOS:: Foram incluídos todos os pacientes tratados com ressecções pulmonares anatômicas por CTVA entre 2010 e 2015 e analisados dados clínicos e patológicos, assim como complicações pós-operatórias. RESULTADOS:: Foram realizadas 117 ressecções pulmonares por CTVA, sendo 98 lobectomias e 19 segmentectomias anatômicas. A média de idade foi de 63,6 anos (variação, 15-86 anos), sendo a maioria mulheres (n = 69; 59%). A média de tempo de permanência com dreno foi de 2,47 dias e a de estada em UTI foi de 1,88 dias. A média de tempo de internação foi de 4,48 dias. Sangramento ≥ 400 ml ocorreu em 15 pacientes. Houve conversão para toracotomia em 4 pacientes. CONCLUSÕES:: Nossos resultados vão ao encontro de publicações em grandes séries internacionais, corroborando que a CTVA é uma importante via de execução de ressecções pulmonares e que pode ser realizada com segurança quando há treinamento adequado, devendo ser mais utilizada no Brasil para o tratamento das doenças pulmonares.

Anatomic pulmonary resection via video-assisted thoracic surgery: analysis of 117 cases at a referral center in Brazil / Ressecções pulmonares anatômicas por cirurgia torácica videoassistida: experiência de 117 casos em um centro de referência no Brasil

ABSTRACT Objective: To describe our experience with video-assisted thoracic surgery (VATS) for anatomic pulmonary resection at a referral center for thoracic surgery in Brazil. Methods: All patients who underwent anatomic pulmonary resection by VATS between 2010 and 2015 were included. Clinical and pathological data, as well as postoperative complications, were analyzed. Results: A total of 117 pulmonary resections by VATS were performed, of which 98 were lobectomies and 19 were anatomic segmentectomies. The mean age of the patients was 63.6 years (range, 15-86 years). Females predominated (n = 69; 59%). The mean time to chest tube removal was 2.47 days, and the mean length of ICU stay was 1.88 days. The mean length of hospital stay was 4.48 days. Bleeding ≥ 400 mL occurred in 15 patients. Conversion to thoracotomy was required in 4 patients. Conclusions: Our results are similar to those published in major international studies, indicating that VATS is an important strategy for pulmonary resection. They also show that VATS can be safely performed with adequate training. This technique should be used more often for the treatment of lung diseases in Brazil.

RESUMO Objetivo: Relatar a experiência com cirurgia torácica videoassistida (CTVA) para ressecções pulmonares anatômicas em um centro nacional de referência de cirurgia torácica no Brasil. Métodos: Foram incluídos todos os pacientes tratados com ressecções pulmonares anatômicas por CTVA entre 2010 e 2015 e analisados dados clínicos e patológicos, assim como complicações pós-operatórias. Resultados: Foram realizadas 117 ressecções pulmonares por CTVA, sendo 98 lobectomias e 19 segmentectomias anatômicas. A média de idade foi de 63,6 anos (variação, 15-86 anos), sendo a maioria mulheres (n = 69; 59%). A média de tempo de permanência com dreno foi de 2,47 dias e a de estada em UTI foi de 1,88 dias. A média de tempo de internação foi de 4,48 dias. Sangramento ≥ 400 ml ocorreu em 15 pacientes. Houve conversão para toracotomia em 4 pacientes. Conclusões: Nossos resultados vão ao encontro de publicações em grandes séries internacionais, corroborando que a CTVA é uma importante via de execução de ressecções pulmonares e que pode ser realizada com segurança quando há treinamento adequado, devendo ser mais utilizada no Brasil para o tratamento das doenças pulmonares.

Efeitos do fumo materno durante a gestação e complicações perinatais / Effects of maternal smoking during pregnancy and perinatal complications

Objetivos: Avaliar o perfil de puérperas tabagistas no Hospital de Clínicas de Porto Alegre (HCPA), determinar a prevalência do tabagismo nestas pacientes e avaliar efeitos do fumo sobre a gestação e os recém-nascidos (RNs). Métodos: Estudo prospectivo, transversal, com dados coletados a partir de um questionário estruturado. Foram incluídas pacientes hígidas, com gestação a termo. Foram excluídas puérperas que tiveram gestações múltiplas, RNs com crescimento intrauterino restrito, anormalidades cromossômicas, malformações ou infecção intrauterina, e puérperas com dados incompletos no prontuário. As pacientes foram divididas em dois grupos: gestantes fumantes e não-fumantes. Foram avaliadas variáveis demográficas, clínicas e relacionadas à gestação, e variáveis relacionadas ao recém-nascido. Resultados: Foram incluídas no estudo 718 puérperas, sendo que 23% eram fumantes ativas durante a gestação. Não houve diferença estatística com relação à idade materna, número de cesarianas ou abortos e idade gestacional no momento do parto. Foram fatores de risco para o tabagismo na gravidez o maior número de gestações prévias, ser solteira ou separada, não branca, com menor escolaridade e não realizar pré-natal. O peso dos RNs foi estatisticamente menor no grupo das gestantes tabagistas, com uma variação média de 143g a menos nesse grupo. O número de RNs pequenos para idade gestacional foi significativamente maior no grupo de gestantes fumantes. A evolução clínica do RN, o peso da placenta e o índice de Apgar não foram diferentes entre os grupos. Conclusão: Este estudo foi relevante para o melhor conhecimento do perfil das puérperas fumantes do HCPA e aponta para a importância da realização de pré-natal e a busca de estratégias de tratamento para estas pacientes como forma de prevenção de complicações gestacionais e perinatais.

Aims: To evaluate the clinical profile of smoker post-pregnant women at Hospital de Clínicas de Porto Alegre (HCPA), to determine the prevalence of smoking in these patients and to evaluate the effects of smoking on pregnancy and on the newborns. Methods: This is a cross-sectional prospective study, with data collected through a structured questionnaire. Healthy patients with term pregnancies were included. Exclusion criteria were multiple pregnancies, newborns with intrauterine growth restriction, chromosomal abnormalities, malformations or intrauterine infection, and incomplete data on medical records. Patients were divided in two groups: smokers and non-smokers. Demographic and clinical variables were evaluated, as well as data related to the pregnancy and to the newborn. Results: Seven hundred and eighteen post-pregnant women were included in the study, of whom 23% were current smokers during pregnancy. There was no statistic difference regarding maternal age, number of cesarean sections or abortions, and gestational age at childbirth. Higher number of previous pregnancies, being single/separated, non-white, less education and no prenatal follow up visits were risk factors for smoking in pregnancy. The weight of the newborns was statistically lower in the smoking pregnant group, with a negative variation of 143 grams in average in this group. The number of newborns small for gestational age was significantly higher in the smoking pregnant group. Clinical evolution of the newborn, placenta weight and the Apgar score were not different between the groups. Conclusion: This study was relevant to improve the knowledge about the profile of post pregnant smokers at HCPA, underscores the importance of prenatal follow up visits and the need for treatment strategies to these patients as preventive measures to avoid perinatal and gestational complications.