Avaliação da capacidade funcional de exercício no ambiente aquático

En este estudio se verificó la correlación de la distancia recorrida en jóvenes saludables y se comparó la velocidad media durante la caminata mediante el test de caminata de seis minutos (TC6min) realizado en suelo y del test de caminata de tres minutos acuático (TC3minA), así como se contrastó las variables fisiológicas (frecuencia cardiaca, saturación periférica de oxígeno y presión arterial) y de síntomas entre los test. Es un estudio transversal con muestra de veinte sujetos jóvenes saludables. Se les sometieron a la espirometría y se les aplicaron un cuestionario sobre salud y actividad física, además de que realizaron el TC6min y el TC3minA. En el análisis estadístico se utilizó la prueba Shapiro-Wilk para evaluar la normalidad de los datos, la prueba t Student emparejada y Wilcoxon para las comparaciones entre las variables y el coeficiente de correlación de Pearson para verificar las asociaciones. Se utilizó la significancia estadística de pOs objetivos deste estudo foram verificar a correlação da distância percorrida e comparar a velocidade média durante a caminhada por meio do teste de caminhada de seis minutos (TC6min) realizado em solo com o teste de caminhada de três minutos aquático (TC3minA) em jovens saudáveis, bem como contrastar variáveis fisiológicas (frequência cardíaca, saturação periférica de oxigênio e pressão arterial) e sintomatológicas entre os testes. Estudo transversal com amostragem de vinte indivíduos jovens saudáveis. Todos foram submetidos à espirometria, responderam a um questionário sobre saúde e atividade física, além de realizarem o TC6min e o TC3minA. Na análise estatística foi utilizado teste de Shapiro-Wilk para avaliar normalidade dos dados, o teste t de Student pareado e Wilcoxon nas comparações entre as variáveis e o coeficiente de correlação de Pearson para verificar associações. A significância estatística de pThe aim of this study was to investigate the correlation between distance achieved and compare the average speed while walking in the six-minute walk test (6MWT) performed on solid ground and in the three-minute walk test in water (3MWT-W) with healthy young individuals, as well as compare physiological (heart rate, oxygen saturation and blood pressure) and symptomatic variables between tests. It is a cross-sectional study, with a sample of 20 healthy young subjects. All patients underwent spirometry, answered a questionnaire on health and physical activity, in addition to performing the 6MWT and 3MWT-W. Statistical analysis used the Shapiro-Wilk test to evaluate normality of the data, the paired Student's t-test and Wilcoxon in the comparisons between the variables and the Pearson correlation coefficient to verify associations. Statistical significance of p < 0.05 was adopted. The mean age was 22 (±2) years, the mean BMI was 23 (±3) kg/m2 and all subjects had normal pulmonary function. The average distance achieved in the 6MWT was of 657 (±43) meters and in the 3MWT-W of 135 (±13) meters. A weak correlation between the 3MWT-W and 6MWT (r=0.35) was found. The speed during the tests showed a statistically significant difference (3MWT-W 0.75±0.07 versus 6MWT 1.85±9.1,

Predictive factors for extubation success in very low and extremely low birth weight preterm infants

# Background Although invasive mechanical ventilation (IMV) has contributed to the survival of preterm infants with extremely low birth weight (ELBW), it is also associated with unsatisfactory clinical outcomes when used for prolonged periods. This study aimed to identify factors that may be decisive for extubation success in very low birth weight (VLBW) and extremely low birth weight (ELBW) preterm infants. # Methods The cohort study included preterm infants with gestational age (GA) \<36 weeks, birth weight (BW) \<1500 grams who underwent IMV, born between 2015 and 2018. The infants were allocated into two groups: extubation success (SG) or failure (FG). A stepwise logistic regression model was created to determine variables associated with successful extubation. # Results Eighty-three preterm infants were included. GA and post-extubation arterial partial pressure of carbon dioxide (PaCO~2~) were predictive of extubation success. Infants from FG had lower GA and BW, while those from SG had higher weight at extubation and lower post-extubation PaCO~2~. # Discussion Although we found post-extubation PaCO~2~ as an extubation success predictor, which is a variable representative of the moment after the primary outcome, this does not diminish its clinical relevance since extubation does not implicate in ET removal only; it also involves all the aspects that take place within a specified period (72 hours) after the planned event. # Conclusion GA and post-extubation PaCO~2~ were predictors for extubation success in VLBW and ELBW preterm infants. Infants who experienced extubation failure had lower birth weight and higher FiO~2~ prior to extubation

Are thirty minutes of rest between two 6-Minute Walk Tests enough for cardiovascular and symptomatic recovery for patients with chronic obstructive pulmonary disease?

Dos test de caminata de 6 minutos (TC6min) son necesarios para que se evalúe la capacidad funcional de ejercicio en pacientes con enfermedad pulmonar obstructiva crónica (EPOC). Aunque la American Thoracic Society (ATS) sugiere 1 hora de intervalo entre dos test, todavía se desconoce si puede utilizarse un periodo menor para normalización de las variables fisiológicas. En este estudio se comprobó que es suficiente el intervalo de 30 minutos de descanso entre dos TC6min para que las variables cardiovasculares y de síntomas vuelvan a sus valores de referencia. El estudio se llevó a cabo con 215 pacientes con EPOC (121H, 66±8 años; VEF1: 44[32-57]% previsto), que hicieron dos TC6min con intervalos de 30 minutos. Antes y después de los test se midieron la presión arterial (PA), la frecuencia cardíaca (FC), la saturación de oxígeno (SpO2) y el grado de disnea y de cansancio. Los pacientes caminaron una distancia más grande en el segundo test (TC6min1: 450 [390-500]m vs TC6min2: 470 [403-515]m; p;0,05 para todos. Aunque tenga diferencia estadística significante en la FC inicial entre el primer y el segundo test, el resultado no es clínicamente relevante, por lo tanto, los 30 minutos de descanso entre dos TC6min son suficientes para la recuperación cardiovascular y de síntomas en pacientes con EPOC.Two 6-Minute Walk Tests (6MWT) are required to evaluate functional capacity of exercise in patients with Chronic Obstructive Pulmonary Disease (COPD). Despite the fact that the American Thoracic Society (ATS) has proposed a one-hour interval between two tests, it is unknown whether a shorter period could be used for the normalization of physiological variables. We aimed to verify that an interval of 30 minutes of rest between two 6MWT is sufficient for cardiovascular and symptomatic variables to return to their basal levels. Two hundred and fifteen patients with COPD (121H, 66±8 years; FEV1: 44 [32-57]% predicted) performed two 6MWT with a thirty-minute interval between them. Before and after the tests, we measured Blood Pressure (BP), Heart Rate (HR), peripheral oxygen saturation (SpO2), degree of dyspnea, and fatigue. Patients walked the longest distance in the second test (6MWT1: 450 [390-500]m vs 6MWT2: 470 [403-515]m; p;0.05 for all). Although there are statistically significant differences in initial HR between the first and second test, this finding does not seem to be clinically relevant. Therefore, thirty minutes of rest between two 6MWT are sufficient for cardiovascular and symptomatic recovery in patients with COPD.Dois testes da caminhada de 6 minutos (TC6min) são necessários para avaliação da capacidade funcional de exercício em pacientes com doença pulmonar obstrutiva crônica (DPOC). Apesar de a American Thoracic Society (ATS) preconizar um intervalo de 1 hora entre dois testes, não se sabe se um período menor poderia ser utilizado para normalização das variáveis fisiológicas. O objetivo foi verificar se o intervalo de 30 minutos de repouso entre dois TC6min seria suficiente para que as variáveis cardiovasculares e sintomatológicas retornassem aos valores basais. Duzentos e quinze pacientes com DPOC (121H, 66±8 anos; VEF1: 44[32-57]% previsto) realizaram dois TC6min com intervalo de 30 minutos entre eles. Foram mensuradas antes e após os testes, pressão arterial (PA), frequência cardíaca (FC), saturação periférica de oxigênio (SpO2) e grau de dispneia e fadiga. Os pacientes caminharam maior distância no segundo teste (TC6min1: 450 [390-500]m vs TC6min2: 470 [403-515]m; p;0,05 para todos). Embora haja diferença estatisticamente significante na FC inicial entre o primeiro e segundo teste, tal achado não parece ser clinicamente relevante. Portanto, trinta minutos de repouso entre dois TC6min são suficientes para recuperação sintomatológica e cardiovascular em pacientes com DPOC

Fisioterapia pré-operatória na prevenção das complicações pulmonares em cirurgia cardíaca pediátrica

OBJETIVO: Avaliar a incidência e o risco de complicações pulmonares em crianças submetidas a intervenção fisioterapêutica pré e pós-operatória nas cirurgias cardíacas, bem como comparar com aquelas submetidas apenas a intervenção fisioterapêutica pós-operatória. MÉTODOS: Ensaio clínico aleatório, que incluiu 135 pacientes de zero a 6 anos com cardiopatias congênitas, submetidos à cirurgia cardíaca. Os pacientes foram aleatorizados para grupo intervenção (G1), que realizou fisioterapia pré e pós-operatória, ou para grupo controle (G2), somente fisioterapia pós-operatória. Para comparar as variáveis entre os grupos foi utilizado o teste de Mann-Whitney e o Qui quadrado. Foi calculado o risco absoluto e sua magnitude por meio do número necessário para tratar. A significância estatística foi estipulada em 5% (P<0,05). RESULTADOS: No G1, 17 (25%) pacientes tiveram complicação pulmonar e, no G2, foram 29 (43,3%) (p=0,025). A complicação mais freqüente foi pneumonia e, dos 17 pacientes do G1 que complicaram, sete (10,3%) desenvolveram pneumonia, seis (8,8%) atelectasia e quatro (5,9%) associação das duas. No G2, 13 (19,4%) pacientes tiveram pneumonia, oito (11,9%), atelectasia, e oito (11,9%), pneumonia associada à atelectasia. A redução do risco absoluto para o desfecho primário foi de 18,3% e o número necessário para tratar foi calculado em 5,5. CONCLUSÃO: A fisioterapia respiratória pré-operatória reduziu significativamente o risco de desenvolvimento de complicações pulmonares no pós-operatório de cirurgia cardíaca pediátrica

Can the six-minute walk distance predict the occurrence of acute exacerbations of COPD in patients in Brazil?

ABSTRACT Objective: To evaluate whether a six-minute walk distance (6MWD) of 80% of predicted. The occurrence of acute exacerbations of COPD over 2 years was identified by analyzing medical records and contacting patients by telephone. Results: In the sample as a whole, there was moderate-to-severe airflow obstruction (mean FEV1 = 41 ± 12% of predicted) and the mean 6MWD was 469 ± 60 m (86 ± 10% of predicted). Over the 2-year follow-up period, 25 patients (50%) experienced acute exacerbations of COPD. The Kaplan-Meier method showed that the patients in whom the 6MWD was ≤ 80% of predicted were more likely to have exacerbations than were those in whom the 6MWD was > 80% of predicted (p = 0.01), whereas the Cox regression model showed that the former were 2.6 times as likely to have an exacerbation over a 2-year period as were the latter (p = 0.02). Conclusions: In Brazil, the 6MWD can predict acute exacerbations of COPD over a 2-year period. The risk of experiencing an acute exacerbation of COPD within 2 years is more than twice as high in patients in whom the 6MWD is ≤ 80% of predicted

Perfil dos pacientes com DPOC que melhoram a capacidade de exercício após treinamento

Introduction: Factors associated with improvement in the incremental shuttle walking test (ISWT), in COPD patients, are not clear. Objective: To identify the profile of patients with better performance in the ISWT after physical training. Methods: Forty-two patients with COPD were separated into two groups: im-provement (IG) in the ISWT (≥20 meters), and no improvement (NIG). Spirometry, ISWT, six-minute walk test (6MWT), sensations of dyspnea, anthropometric data and disease severity were evaluated. Results: After training, there was an improvement in the ISWT (P = 0.03). Patients from the IG showed poorer per-formance in the ISWT (P <0.0001) and greater sensation of dyspnea (P = 0.04) before training. Participants in the IG and NIG did not show any differences in anthropometric data and disease severity. Conclusions: Patients with more symptoms and poorer performance on the initial ISWT seem to be the ones who improve more after physical training

Prevalência de respiradores bucais em crianças de idade escolar Prevalence of mouth breathing in children from an elementary school

Pretende-se identificar a prevalência de respiradores bucais em crianças de uma escola do ensino fundamental. Foram aplicados 496 questionários aos pais ou responsáveis das crianças de 1ª à 4ª série de uma escola fundamental, para identificar respiradores bucais. O questionário incluía questões sobre hábitos, sono, comportamento, alimentação, cuidados pessoais e respiração. Para comparar as variáveis entre respiradores bucais e nasais, foi utilizado o teste de Mann-Whitney e qui-quadrado. Para medir o efeito da exposição das variáveis explicativas sobre o desfecho primário, foi utilizada regressão logística e sua magnitude foi calculada por meio do odds ratio. A significância estatística foi estipulada em 5%. A taxa de devolução dos questionários foi de 84,5%. A prevalência de respiração bucal nessa população foi 56,8%. A mediana de idade foi sete anos (6-9). Não houve diferença estatisticamente significante entre os gêneros, 49,1% masculino e 50,9% feminino. O modelo final de regressão logística identificou as variáveis baba, dorme bem (associação negativa) e ronca como fatores que predizem a ocorrência da respiração bucal. A prevalência de respiradores bucais foi semelhante à encontrada na literatura pesquisada. As variáveis babar, roncar e dormir bem (associação negativa) podem predizer a ocorrência da respiração bucal.<br>The objective of this article is to identify the prevalence of mouth breathing in children from an elementary school. 496 questionnaires were answered by 1st and 4th grade children's parents or sponsors in order to identify mouth-breathing. There were questions about habits, sleeping, behavior, eating, personal care and breathing. Mann-Whitney and the Chi-square tests were used to compare the variables between mouth-breathing and nose-breathing among the groups. To measure the exposure effect of the explanatory variables on mouse breathing, the test of logistic regression was used and its magnitude was calculated through Odds Ratio. The statistical significance was set at 5%, and the rate of returned questionnaires was 84.5%. The prevalence of the mouthbreathing over this population was 56.8%. The average age was 7 years old (6-9). There was no significant statistical difference between genders, considering 49.1% male and 50.9% female. The final model of logistic regression identified the variables dribble, sleeps well (negative association) and snores as factors that predict the occurrence of the mouth-breathing. The prevalence of mouthbreathing was similar to related in the literature. The variables dribble, sleeps well (negative association) and snores may be factors that predict the occurrence of mouth-breathing