Resposta funcional do uso da pressão positiva contínua nas vias aéreas (CPAP) a fluxo contínuo em pacientes acamados

Abstract

Purpose: To evaluate pulmonary volumes and vital signals after using continuous flow CPAP on in bed patients during three days. Methods: Sample was composed of 16 in hospital patients, 14 men and 2 women, with an average age of 28,25 ± 9,41 years old , and immobilization time average of 7,63 ± 2,39 days. During patients evaluation it was used Wrigh ventilometer to measure pulmonary volumes, pulse oximeter to verify oxygen peripheric saturation (SpO2) and heart rate (HR), blood pressure monitor and stethoscope to measure blood pressure (BP) and stopwatch to verify respiratory rate (RR). Variables were verified before and 20’, 35’ and 50’ after CPAPs use. Results: it was showed a significative raise on minute volume (MV), vital capacity (VC), and SpO2 (P<0,05). Tidal volume didn’t show statistically significant differences, but trended to rise. Same occurred to HR and RR, which didn’t had statistical relevance and trended to decline. Conclusion: CPAP do increase MV, VC and SpO2, offering pulmonary reexpansion and better alveolar gas exchanges. It is suggested that CPAP can be used as a prophylactic measure on patients in bed. Although, to really certify its prophylactic benefits a long time study is necessary with a wider sample and this specific purpose.