Avaliação da pressão expiratória nasal utilizando o teste de sniff reverso (RSNEP) em sujeitos pós-AVC

Abstract

This study aimed to analyze the applicability of RSNEP in the evaluation of stroke patients. Subjects with stroke were recruited and evaluated by spirometry and maximum respiratory pressures, in addition to nasal respiratory pressures (RSNEP and SNIP). For statistical analysis, p <0.05 was considered. The pressure values obtained were lower than predicted for healthy subjects, except for RSNEP, which still does not have reference values (MIP=68[48.1-85.8] cmH2O, MEP=78.8[61.0-105, 2] cmH2O, SNIP=62 [46-80.6] cmH2O and RSNEP=49[40-64.5] cmH2O). There was a strong correlation between RSNEP and MEP (r=0.73, p=0.0008), but there was no agreement between the methods (bias=-28.2, p<0.05). Therefore, RSNEP is a non-invasive and easy test to perform, which correlates well with MEP and can be used in a complementary way to assess the expiratory muscles of this population.