Efeitos agudos da oscilação oral de alta frequência sobre parâmetros cardiorrespiratórios na DPOC: comparação entre os equipamentos Flutter VRP1 e Shaker
Acute effects of high-frequency oral oscillation on cardiorespiratory parameters in COPD: comparison between the equipments Flutter VRP1 and Shaker
Evelize Cristina Labegaline da Silva Araújo, Eliane Regina Ferreira Sernache de Freitas, Rafael Mesquita, Vanessa Suziane Probst, Álvaro Nagib Atallah
Resumo
Introdução: Os efeitos agudos da técnica de Oscilação Oral de Alta Frequência (OOAF) sobre parâmetros cardiorrespiratórios em indivíduos com Doença Pulmonar Obstrutiva Crônica (DPOC) ainda são pouco conhecidos. Objetivo: Avaliar os efeitos agudos da OOAF sobre parâmetros cardiorrespiratórios em indivíduos com DPOC e; verificar se esses efeitos são similares entre os equipamentos Flutter VRP1 (importado) e Shaker (nacional). Métodos: Cem indivíduos com DPOC estável foram randomizados em dois grupos, de acordo com o equipamento para OOAF utilizado: grupo Flutter (GF, n=50), ou grupo Shaker (GS, n=50). Ambos realizaram 15 minutos de OOAF e, antes e após essa intervenção, tiveram avaliadas as variáveis dispneia, frequência respiratória (FR) e frequência cardíaca (FC). Resultados: Observou-se redução de 1 (1 – 3) para 0,5 (0 – 2) pontos na dispneia (p<0,001), de 20 (20 – 24) para 20 (17 – 20) respirações por minuto (rpm) na FR (p=0,002) e de 80 (68 – 84) para 76 (68 – 80) batimentos por minuto (bpm) na FC (p=0,2) após a técnica de OOAF no GF. Não houve diferença estatística significante na comparação entre GF e GS em nenhuma das variáveis investigadas (dispneia: -1 [-2 – 0] vs -1 [-1,3 – 0] pontos, p=0,5; FR: -2 [-4 – 0] vs -0,5 [-4 – 0] rpm, p=0,8 e; FC: 0 [-8 – 4] vs -2 [-8 – 8] bpm, p=0,9; respectivamente). Conclusão: Uma sessão de apenas 15 minutos de OOAF permitiu a melhora de parâmetros respiratórios em indivíduos com DPOC estável, porém sem efeito sobre o parâmetro cardíaco avaliado. Além disso, esses resultados foram semelhantes entre os equipamentos importado e nacional.
Palavras-chave
Abstract
Introduction: The acute effects of the High-Frequency Oral Oscillation (HFOO) technique on cardiorespiratory parameters in subjects with Chronic Obstructive Pulmonary Disease (COPD) are poorly known. Objective: To evaluate the acute effects of the HFOO technique on cardiorespiratory parameters in subjects with COPD and; to verify whether these effects are similar between the Flutter VRP1 (imported) and Shaker (national) equipments. Methods: A hundred subjects with stable COPD were randomized into two groups according to the equipment used for HFOO: Flutter group (FG, n=50), or Shaker group (SG, n=50). Both groups performed the HFOO technique during 15 minutes and, before and after this intervention, dyspnea, respiratory rate (RR) and heart rate (HR) were assessed. Results: It was observed a reduction from 1 (1 – 3) to 0.5 (0 – 2) points in dyspnea (p<0.001), from 20 (20 – 24) to 20 (17 – 20) breaths per minute (breaths·min-1) in RR (p=0.002) and from 80 (68 – 84) to 76 (68 – 80) beats per minute (beats·min-1) in HR (p=0.2) after the technique of HFOO in FG. No statistical difference was found in the comparison between FG and SG in any of the investigated variables (dyspnea: -1 [-2 – 0] vs -1 [-1.3 – 0] points, p=0.5; RR: -2 [-4 – 0] vs -0.5 [-4 – 0] breaths·min-1, p=0.8; HR: 0 [-8 – 4] vs 2 [-8 – 8] beats·min-1, p=0.9; respectively). Conclusion: One session of only 15 minutes of HFOO yield improvements in respiratory parameters in patients with stable COPD, but with no effect on the cardiac parameter assessed. Furthermore, these results were similar between the imported and national equipments.
Keywords
Referências
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