Evaluation of Capillary Refill Index

Evaluation of Capillary Refill Index

Comparison of a peripheral perfusion assessment method using a pulse oximeter to the conventional capillary refill time visually assessed by a clinician.

A new technology, capillary refill index (CRI), to assess peripheral perfusion status quantitatively using pulse oximeter waveforms is being developed. The conventional capillary refill time (CRT) is widely used in clinical settings as a gold standard to assess peripheral perfusion.

The objective of this study is to evaluate the capability of CRI to predict altered peripheral perfusion determined with the conventional CRT test. Predictive capability of CRI needs to be assessed to achieve a goal to provide clinicians with an alternative method to the conventional CRT.

Inclusion Criteria:

1. Individuals 18 years of age or older
2. Patients who present to the ED or who are admitted to the ICU of North Shore University Hospital (NSUH)

Exclusion Criteria:

1. Pregnant
2. Prisoners
3. Finger, hand or forearm anatomical anomaly or disease that may interfere with attaching a pulse oximeter sensor
4. Patients' deemed clinically unstable by the clinical team