Efeito da fisioterapia respiratória convencional e da manobra de aspiração na resistência do sistema respiratório e na saturação de O2 em pacientes submetidos à ventilação mecânica

Abstract

Studies about the benefits of chest physiotherapy (CP) to the treatment of bronchyectasis come from the beginning of the 20th century. Since then, a lot of work on this subject has been published about indications, techniques, risks and benefits of the CP. However, no study has been done to compare the effects of conventional CP (postural drainage, percussion and suction) to the suction manoeuvre itsef, as far as respiratory resistance is concerned. The present study was conducted in order to determine the effects of these two procedures on the airway resistance and O2 saturation (SpO2) values. Twelve patients, whose mean age was 58, admitted at the Intensive Care Unit at Botucatu University Hospital – UNESP, with respiratory failure, were studied. All patients were intubated and mechanically ventilated. Within a 4-day-period patients were submited, in turns, to suction manoeuvre, or conventional CP. Airway resistance and saturation were evaluated immediately before and after each manoeuvre. It was then noticed that there was a significant airway resistance fall (p 0.05). There were no change in SpO2 with these two procedures. These results showed that conventional CP is useful to the improvement of respiratory resistance.