Back to the future: a case series of minimally invasive repair of pectus excavatum with regular instruments.

OBJECTIVE: Minimally invasive repair of pectus excavatum (MIRPE) is a surgical treatment for PE. During the procedure, a specialized introducer is used to tunnel across the mediastinum for thoracoscopic insertion of a metal bar. There have been reported cases of cardiac perforation during this risky step. The large introducer can be a dangerous lever in unskilled hands. We set out to determine the safety and feasibility of using regular instruments (i.e., not relying on special devices or tools) to create the retrosternal tunnel during MIRPE. METHODS: This was a preliminary study of MIRPE with regular instruments (MIRPERI), involving 28 patients with PE. We recorded basic patient demographics, chest measurements, and surgical details, as well as intraoperative and postoperative complications. RESULTS: Patients undergoing MIRPERI had Haller index values ranging from 2.58 to 5.56. No intraoperative complications occurred. Postoperative complications included nausea/vomiting in 8 patients, pruritus in 2, and dizziness in 2, as well as atelectasis, pneumothorax with thoracic drainage, pleural effusion, and dyspnea in 1 patient each. CONCLUSIONS: In this preliminary study, the rate of complications associated with MIRPERI was comparable to that reported in the literature for MIRPE. The MIRPERI approach has the potential to improve the safety of PE repair, particularly for surgeons that do not have access to certain special instruments or have not been trained in their use.

Back to the future: a case series of minimally invasive repair of pectus excavatum with regular instruments / De volta para o futuro: série de casos de reparo minimamente invasivo do pectus excavatum com instrumentos comuns

ABSTRACT Objective: Minimally invasive repair of pectus excavatum (MIRPE) is a surgical treatment for PE. During the procedure, a specialized introducer is used to tunnel across the mediastinum for thoracoscopic insertion of a metal bar. There have been reported cases of cardiac perforation during this risky step. The large introducer can be a dangerous lever in unskilled hands. We set out to determine the safety and feasibility of using regular instruments (i.e., not relying on special devices or tools) to create the retrosternal tunnel during MIRPE. Methods: This was a preliminary study of MIRPE with regular instruments (MIRPERI), involving 28 patients with PE. We recorded basic patient demographics, chest measurements, and surgical details, as well as intraoperative and postoperative complications. Results: Patients undergoing MIRPERI had Haller index values ranging from 2.58 to 5.56. No intraoperative complications occurred. Postoperative complications included nausea/vomiting in 8 patients, pruritus in 2, and dizziness in 2, as well as atelectasis, pneumothorax with thoracic drainage, pleural effusion, and dyspnea in 1 patient each. Conclusions: In this preliminary study, the rate of complications associated with MIRPERI was comparable to that reported in the literature for MIRPE. The MIRPERI approach has the potential to improve the safety of PE repair, particularly for surgeons that do not have access to certain special instruments or have not been trained in their use.

RESUMO Objetivo: O minimally invasive repair of pectus excavatum (MIRPE, reparo minimamente invasivo do pectus excavatum) é um tratamento cirúrgico do PE. Durante o procedimento, utiliza-se um introdutor específico a fim de criar um túnel mediastinal para a colocação toracoscópica de uma barra metálica. Já houve casos relatados de perfuração cardíaca durante essa etapa arriscada. O introdutor grande pode ser uma perigosa alavanca em mãos inábeis. Propusemo-nos a determinar a segurança e viabilidade do uso de instrumentos comuns (isto é, sem contar com dispositivos ou ferramentas especiais) para criar o túnel retroesternal durante o MIRPE. Métodos: Estudo preliminar sobre o MIRPE with regular instruments (MIRPERI, MIRPE com instrumentos comuns), envolvendo 28 pacientes com PE. Foram registrados dados demográficos básicos dos pacientes, medições torácicas e detalhes cirúrgicos, bem como complicações intra e pós-operatórias. Resultados: Os pacientes submetidos ao MIRPERI apresentavam índice de Haller entre 2,58 e 5,56. Não ocorreram complicações intraoperatórias. As complicações pós-operatórias incluíram náusea/vômito em 8 pacientes, prurido em 2 e tontura em 2, bem como atelectasia, pneumotórax com drenagem torácica, derrame pleural e dispneia em 1 paciente cada. Conclusões: Neste estudo preliminar, a taxa de complicações associadas ao MIRPERI foi comparável à relatada na literatura para o MIRPE. A abordagem de MIRPERI tem o potencial de melhorar a segurança do reparo do PE, particularmente para cirurgiões que não têm acesso a certos instrumentos especiais ou não foram treinados para utilizá-los.

The Vacuum Bell device as a sternal lifter: An immediate effect even with a short time use.

BACKGROUND: To minimize cardiac perforation during the minimally invasive repair of pectus excavatum (MIRPE), several surgeons have suggested using a suction device to intraoperatively lift the sternum. Whether or not this technique is effective for all PE patients is not yet known. As such, our aim was to quantify the extent to which a suction device is capable of lifting the sternum with a short duration of use. METHODS: 30 PE patients received a low-dose CT scan as part of standard PE evaluation. A Vacuum Bell suction was then applied for only two minutes, and a repeat CT scan was obtained only at the deepest point of the chest wall deformity. We compared chest dimensions before and after Vacuum Bell suction. RESULTS: The Vacuum Bell lifted the sternum in all 29 patients included in the analysis. The absolute change in depth ranged from 0.29 to 23.67mm (M=11.02, SD=6.05). The average improvement in Haller index was 0.76. The suction was most effective for individuals with low BMI and smaller chest depths. Efficacy was not associated with gender, age, or chest morphology. CONCLUSIONS: The Vacuum Bell device effectively lifted the sternum in PE patients with different demographics and chest morphologies. Future research is needed to address whether or not the device reduces risk of cardiac perforation during MIRPE. LEVELS OF EVIDENCE: Prognosis Study Level IV.

General thoracic surgery workforce: training, migration and practice profile in Brazil.

OBJECTIVES: This study is aimed at drawing the profile of the Brazilian general thoracic surgeon. This experience has been fruitful in other areas, helping attract manpower and to better serve the interests of other Societies. This is the first survey of this kind in Brazil and in Latin America. METHODS: An electronic invitation was sent to the members of the Brazilian Society of Thoracic Surgery to answer a web-based questionnaire and physicians potentially practising thoracic surgery, with 82 questions including demographic data, medical education, training in general and thoracic surgery, continued professional education, practice profile, research activities and certifications, participation in medical societies, income/compensation and career satisfaction. Quantitative and qualitative analyses are presented. RESULTS: The estimated level of participation was 82% (468). The mean age of the active general thoracic surgeon is 43.2 (range 45.3±11.4) years. Women comprised 8% (37) of respondents, and 60% (277) of the participants had graduated from public medical schools. Four states nationwide trained 88% (391) of the thoracic surgeons. Only 32% (149) of the surgeons work exclusively with thoracic surgery. The public health system is the main provider of income for thoracic surgeons. Only 11 of 27 states have an adequate, although poorly distributed, number of thoracic surgeons. CONCLUSIONS: Although Brazil has a reasonable number of general thoracic surgeons, inequalities in their distribution through the country arise as one of the most concerning problems of the speciality. The results of this study show that leadership actions and consistent government policies are required to improve work conditions and provide efficient workforce planning.

Diagnóstico laboratorial da neurocisticercose: revisão e perspectivas / Laboratory diagnosis of neurocysticercosis: review and perspectives

A neurocisticercose é causada por Cysticercus cellulose, a forma larval de Taenia solium, quando este se aloja no sistema nervoso central. O seu diagnóstico é realizado com base em dados clínicos, epidemiológicos, demonstração do agente etiológico pelas técnicas de imagem e testes laboratoriais. No presente estudo, apresentamos uma revisão do diagnóstico laboratorial, com ênfase no desempenho dos testes para pesquisa de anticorpos específicos e detecção de antígenos circulantes, utilização de antígeno homólogo ou heterólogo, nativo e recombinante, bem como a aplicação de métodos moleculares.

Neurocysticercosis is caused by Cysticercus cellulosae, the larval form of Taenia solium, when it lodges in the central nervous system. The diagnosis of neurocysticercosis is based on clinical and epidemiological data, neuroimaging findings of etiological agent and serologic test results. Herein we present a review of clinical diagnosis, emphasizing test performance for specific antibody and antigen detection, the use of homologous or heterologous antigen, native and recombinant antigens as well as the application of molecular methods.

Comparação de técnicas imunológicas in-house empregadas na rotina diagnóstica de cisticercose humana / Comparative analysis on in-house immunologic assays used for performing the routine laboratorial diagnosis of human cysticercosis

Neste estudo foram analisados os resultados obtidos do diagnóstico de cisticercose no Centro de Imunologia do Instituto Adolfo Lutz (IAL), no período de março/2007 a julho/2010. A detecção de anticorpos específicos em 522 amostras de soro e líquido cefalorraquidiano (LCR)foi realizada pelas técnicas de imunofluorescência indireta (IFI) e hemaglutinação indireta (HAI). A frequência de amostras reagentes foi de 11,0% no LCR e 8,2% no soro. Em 50% das amostras não houve informações sobre suspeita clínica de neurocisticercose dos pacientes, sendo disponíveis nos18,3% e 16,4%, em amostras, respectivamente, de LCR e soro. Nas amostras de paciente com suspeita de neurocisticercose, a positividade foi de 22,6% (LCR) e de 18,4% (soro). Houve associação entre a suspeita clínica e a positividade dos testes (p>0.05). A maioria das amostras testadas foi proveniente do Estado de São Paulo, e 16,9% de amostras de LCR e 35,9% de amostras séricas foram enviados de outros Estados do país. Os ensaios de IFI e HAI apresentaram teste de concordância Kappa de 86%. Pela indisponibilidade de kits de reagentes diagnósticos de cisticercose em amostras de LCR no mercado, os testes in-house produzidos no IAL têm sido de grande relevância para os serviços de saúde pública.