Is Prolonged Slow Expiration a Reproducible Airway Clearance Technique?

Intervenções de fisioterapia respiratória utilizadas durante a hospitalização de crianças e adolescentes com asma

Objetivo: descrever e comparar as intervenções de fisioterapia respiratória utilizadas para asma durante a hospitalização em três grupos etários pediátricos. Além disso, buscou-se investigar os motivos de escolha dessas intervenções.Métodos: a amostra foi composta por fisioterapeutas atuantes em hospitais que reportaram atender crianças e adolescentes com asma. Os profissionais responderam a um questionário online sobre dados pessoais, acadêmicos, profissionais e relativo às intervenções de fisioterapia respiratória utilizadas em lactentes, pré-escolares e escolares/adolescentes. As intervenções foram agrupadas em nove classificações: convencionais, manuais, baseadas em volume, oscilação oral de alta frequência/pressão expiratória positiva (OOAF/PEP), exercícios ventilatórios, ventilação não invasiva, técnica de expiração forçada (TEF), aspiração de vias aéreas superiores (VAS) e outras.Resultados: foram incluídos 93 fisioterapeutas, com idade entre 31 e 40 anos (47,3%) e do sexo feminino (87,1%). As intervenções mais utilizadas nos lactentes foram a aspiração de VAS (78,5%), a aceleração do fluxo expiratório (AFE) (50,5%) e a terapia expiratória manual passiva (TEMP) (45,2%). Nos pré-escolares, predominou a tosse (75,3%), a aspiração de VAS (52,7%), a AFE (51,6%) e a TEMP/expiração lenta e prolongada (ELPr) (50,5%). Já nos escolares/adolescentes, a tosse (83,9%), os exercícios expiratórios variados (73,1%) e a ELPr (57,0%) sobressaíram-se. Houve menor utilização (p<0,01) de OOAF/PEP, de exercícios ventilatórios e de TEF nos lactentes e, também, de métodos convencionais, manuais, aspiração de VAS e outras terapias (p<0,01) nos escolares/adolescentes. Os profissionais relataram utilizar essas intervenções por serem mais eficazes na prática clínica (78,5%).Conclusão: as intervenções manuais e as técnicas de expectoração visando à desobstrução brônquica foram as mais frequentemente utilizadas, tendo relação com a faixa etária e a escolha devido à efetividade na prática clínica.

Effectiveness of chest physiotherapy using passive slow expiratory techniques in dogs with airway fluid accumulation: A randomized controlled trial

BACKGROUND

Prolonged slow expiration (PSE) and assisted cough (AC) are airway clearance techniques feasible and well tolerated in dogs.

OBJECTIVES

To evaluate the effectiveness of PSE and AC as chest physiotherapy (CP) techniques in dogs with airway fluid accumulation.

ANIMALS

Thirty-one client-owned dogs hospitalized in an intensive care unit from October 2014 to May 2018.

METHODS

Prospective randomized controlled trial. Dogs presented with or developing acute dyspnea during hospitalization associated with airway fluid accumulation were assigned to CP group (medical treatment and CP, 15 dogs) or control group (medical treatment alone, 16 dogs). The arterial partial pressure of oxygen (PaO2 ) to fraction of inspired oxygen (FiO2 ) ratio (P/F ratio; PaO2 /FiO2 × 100) was calculated daily for the 1st 48 hours of hospitalization and using the last arterial blood gas performed before discharge or death. The ratio of days of hospitalization with oxygen/total number of hospitalization days (ratio of oxygen-free-days [O2 Free]) was calculated.

RESULTS

During the 1st 48 hours, the P/F ratio increased significantly in the CP group compared to the control group (+ 35.1 mm Hg/day; 95% confidence interval [CI] = 0.4-57.5; P = .03). The (median; 1st quartile to 3rd quartile) difference between the P/F ratio at discharge and inclusion was significantly higher in the CP group (178 mm Hg; 123-241) than in the control group (54 mm Hg; -19 - 109; P = .001). Mean O2 Free increased by 46.4% in the CP group compared with control group (95% CI = 16-59; P = .001). Mortality was 13% (2/15) in the CP group and 44% (7/16) in the control group (P = .07).

CONCLUSIONS AND CLINICAL IMPORTANCE

Prolonged slow expiration and AC improved P/F ratio within 48 hours and decreased need for oxygenation in dyspneic dogs with acute airway fluid accumulation.

Prolonged Slow Expiration Technique and Gastroesophageal Reflux in Infants Under the Age of 1 Year

Background: The Prolonged Slow Expiration Technique (PSE) is an airway clearance technique (ACT) carried out in newborn children with bronchial obstruction and hypersecretion to clear away the mucus from the respiratory tract. Evidence about the effect of PSE on gastroesophageal reflux (GER) is currently lacking in the literature. This study aimed to evaluate the influence of PSE on GER in infants under the age of 1 year. Methods: Infants were observed using multichannel intraluminal impedance-pH monitoring (MII-pH) over 24 h. During monitoring, the participants were treated with one 20 min intervention of PSE in supine position, 2 h after feeding. In this controlled trial with intra-subject design, the number of reflux episodes (REs) during PSE were compared to 20 min before and after PSE. Results: Fifty infants younger than 1 year were screened of whom 22 had a pathological GER. For the entire group, no significant difference was seen in the total number of REs between before, during, or after the PSE treatment (P = 0.76). No significant difference in total REs was found between the three measuring points (P = 0.59) in the group of infants with an abnormal MII-pH (n = 22). Conclusion: PSE does not cause a significant difference in REs in infants younger than 1 year. Registration number: NCT03341585.