Evid Based Nurs 5:51 doi:10.1136/ebn.5.2.51
  • Treatment

Review: several techniques optimise oxygenation during suctioning of patients

Effectiveness of selected techniques during suctioning (randomised controlled trials only)

Technique Results (number of trials, number of patients)
Preoxygenation Improved arterial oxygen saturation (Sa02) (2 trials, n=12 and n=17)
Hyperoxygenation Maintained O2 levels in mechanically ventilated patients (4 trials, n=10–24)
Hyperoxygenation + hyperinflation Added value of hyperinflation unclear in mechanically ventilated patients (4 trials, n=10–24)
Double lumen insufflation catheters Maintained O2 levels throughout suctioning at flow rates of 10–15 l/min (4 of 5 trials, n=10–38)
Hyperinflation alone Unclear benefits on O2 levels after cardiac surgery; increase in blood pressure (4 trials, n=8–34). Increase in volume may result in increased intracranial pressure in patients with head injury (2 trials, n=10–37)
Oxygenation using a manual resuscitation bag v ventilator Ventilators were more effective for oxygen delivery (greater increases in PAO2) (3 of 4 trials, n=10–33)
Open v closed suctioning systems No difference for nosocomial pneumonia (3 trials, n=20–84, all had insufficient power) or mortality (1 trial, n=84). Greater decrease in PaO2 (1 trial, n=8, not clinically significant)
Saline instillationy No difference for oxygenation, gas exchange, heart rate, or blood pressure in ventilated and non-ventilated patients with tracheostomies (5 trials, n=15–45)

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