RT Journal Article
SR Electronic
T1 Acute effects of different intensities of positive expiratory pressure on chest wall volumes in chronic stroke
JF European Respiratory Journal
JO Eur Respir J
FD European Respiratory Society
SP P2530
VO 42
IS Suppl 57
A1 Íllia Nadinne Lima
A1 Elis Emmanuelle Cabral
A1 Vanessa Regiane Resqueti
A1 Maria Clara Góes
A1 Ana Cristina Maciel
A1 Rêncio Bento Florêncio
A1 Andrea Aliverti
A1 Guilherme Augusto Fregonezi
YR 2013
UL http://erj.ersjournals.com/content/42/Suppl_57/P2530.abstract
AB Aims: To study the acute effects of different intensities of Positive Expiratory Pressure (PEP) on chest wall kinematics in chronic stroke patients. Methods: Sixteen chronic stroke patients (stroke group, SG, age 55.7±9.3 yrs, FEV1:86±11.4%pred; FEV1/FVC: 0.79±0.06), and 16 age-matched healthy subjects (control group, CG, age 56.3±9.8 yrs, FEV1: 97.7±12.5%pred; FEV1/FVC: 0.81±0.03) were studied by Optoelectronic Plethysmography. Total (CW) and compartmental (abdominal, ab, abdominal rib cage, RCa and pulmonary rib cage, RCp) chest wall volumes were measured during three random intensities of PEP (10, 15 and 20 cmH2O) in three moments: quite breathing (QB), 5 minutes of each level of PEP with 30 minutes of rest between each intensity and recovery. Results: the increase in CW volume variation during PEP=10, 15 and 20 cmH2O was lower in SG compared to CG (186 vs. 343%, 218 vs. 395%, 209 vs. 431%, respectively, p<0.0001). Operating volumes were significantly different: during PEP, end-expiratory CW volume decreased in CG and increased in SG, mainly due to the pulmonary rib cage compartment.Conclusions: Application of PEP determines rib cage expansion in restricted SG patients, but intensities greater than 10 cmH2O should be used with caution to avoid excessive lung hyperinflation.