Acute effect of the incentive spirometry on lung volume in hemiparetic subjects

Abstract

Introduction: Stroke (AVC, acronym in Portuguese) leads to impairment in respiratory system. Objectives: To compare the volume chest wall changes during the use of incentive spirometry (IS) volume-oriented and assess the pattern of chest wall motion in hemiparetic post-stroke patients and healthy individuals. We studied the volume of 14 subjects (7 hemiparetic and 7 healthy) by the Opto-electronic plethysmography before, during and after IS. Results: Stroke group showed lower values of FVC (L), FVC%, FEV1 (L), PEmáx (cmH2O) and PEmáx (%) in relation to control group. Tidal volume was 32.3% lower (p = 0.031) in stroke group during the IS. Conclusion: There was 25% less participation of the pulmonary rib cage compartment during tidal volume in stroke group compared to the control group (p = 0.0156). The abdominal compartment exhibit 43% greater (p = 0.031) participation in stroke group in tidal volume compared in the control group during period before IS.