Intra-arterial blood pressure reading in intensive care unit patients in the lateral position

Background.? Routine lateral turning of patients has become an accepted standard of care to prevent complications of immobility. The haemodynamic and oxygenation effects for patients in both lateral positions (45°) are still a matter of debate. We aimed to study the effect of these positions on blood pressure, heart rate and oxygenation in a general intensive care population. Design.? Observational study. Method.? Twenty stable intensive care unit patients had intra-arterial blood pressure recordings in the supine and lateral positions with the correction of hydrostatic height compared with a fixed reference point (phlebostatic level). A multilevel model was used to analyse the data. Results.? Mean arterial pressure readings in the lateral positions were, on average, 5?mmHg higher than in the supine position (p?