Effects of two respiratory physiotherapy protocols on respiratory mechanics and cardiorespiratory parameters of patients under mechanical ventilation: a pilot study
DOI:
https://doi.org/10.590/1809-2950/13452522032015Abstract
The aim of the study was to analyze the effects of two respiratory physiotherapy protocols on respiratory mechanics and cardiorespiratory parameters of patients under mechanical ventilation compared to a tracheal aspiration protocol. Pilot study with quasi-experimental design and 50 patients, randomized into GI group (n=16): control group, submitted to tracheal aspiration; GII (n=17): submitted to vibrocompression and tracheal aspiration; GIII (n=17): submitted to vibrocompression, aspiration, and ventilator hyperinflation. The variables analyzed were: heart rate (HR), respiratory rate, systemic blood pressure, peripheral oxygen saturation, static lung compliance, dynamic lung compliance, and airway resistance. These were recorded at three moments: before the procedures (M1), immediately after them (M2), and 15 minutes after them (M3). To compare the effect and analyze the interaction between measurement time and groups, we used Two-Way ANOVA and post hoc Tukey's test. The effect size was determined by calculating Cohen's f2 and by statistical analysis using SPSS for Windows (version 20), with a significance level of 5%. In the intragroup comparison, no differences were observed, while in the comparison between groups the variable HR showed difference between GI and GII in M2 (p=0.02). Results suggest that the respiratory physiotherapy protocols evaluated had no favorable effects on respiratory mechanics; however, they showed to be safe regarding cardiorespiratory parameters.Downloads
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