Capillary Refill Index with Rewarming

A new technology, capillary refill index (CRI) can be useful for assessing peripheral perfusion status quantitatively, but this value can be influenced by fingertip temperature. The aim of this study is to evaluate the predictive accuracy of CRI after a temperature control (warming) procedure in predicting 30-day mortality among ICU/CCU patients. The investigators hypothesized that lowered fingertip temperature can lead prolonged CRI values which are considered as false positives in detection of high-risk patients for mortality, because it causes poor peripheral perfusion which does not reflect hemodynamic instability. The investigators will use the warming procedure to remove or reduce the effect of the fingertip temperature on the CRI measurement and will analyze whether it contributes to reduction of false positives in detection of high-risk patients for mortality.