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Evaluation of a single chest physiotherapy treatment to post-operative, mechanically ventilated cardiac surgery patients
Eales CJ, Barker M, Cubberley NJ
Physiotherapy Theory and Practice 1995;11(1):23-28
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The aim of this study was to evaluate the effects of a single chest physiotherapy treatment on effective dynamic compliance (EDC) and arterial blood gases (ABGs) of mechanically ventilated patients after cardiac surgery. Thirty-seven patients were allocated at random to one of three treatment groups. The patients in group 1 (n = 11) were suctioned after 3 min pre-oxygenation on the ventilator. The patients in group 2 (n = 15) received in addition six manual hyperinflations (using an Ambu-Resuscitator Mark III manual resuscitator bag) prior to suction. The patients in group 3 (n = 11) were treated as for the patients in group 2 with the addition of chest wall vibrations during the expiratory phase of the manual hyperinflations. ABG and EDC values were taken pre-treatment, 3 min after pre-oxygenation (but before treatment) and then at 10, 30 and 60 min post-treatment. The results showed no significant difference in EDC and ABG values between the three groups. We conclude that pre-oxygenation and endotracheal suction, with or without manual hyperinflation and chest wall vibrations, do not significantly alter EDC and ABGs in uncomplicated mechanically ventilated patients after cardiac surgery.

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