Relationship Between Regional Cerebral Oxygen Saturation and Percutaneous Oxygen Saturation at Initial Mobilisation in Patients with Acute Heart Failure

In patients with acute heart failure, early mobilisation is performed according to physical condition, biometric information, and haemodynamic stability. Regional cerebral oxygen saturation (rSO) is useful in monitoring patients during assisted circulation and cardiac arrest, but the measurement of rSO during early mobilisation is not standardised, and its relationship with percutaneous oxygen saturation (SpO) has not been investigated. This study aimed to investigate the relationship between rSO and SpO during initial mobilisation in patients with acute heart failure. Patients with acute heart failure who presented to our emergency centre and were referred for physical therapy were included in this study. Data from 21 of the 24 patients who decided to start mobilisation based on the criteria of the Japanese Society of Intensive Care Medicine were analysed. The resting rSO was 58.6%, and it significantly changed (p < 0.001), with a decrease in the first half of sitting on the edge of the bed (SEB) and an increase from the second half to the end of the SEB. The resting SpO was 96.0%, with a trend towards an increase in the latter half of the SEB (p = 0.05608). Changes in rSO during initial mobilisation in patients with acute heart failure differed from those in SpO.