Validation of a Novel Non-invasive Continuous Blood Pressure Monitor in Children Ages 2- 17 Years-old

This is a prospective observational study to investigate if a non-invasive blood pressure monitoring device, the CareTaker Pulse Decomposition Analysis (PDA), can accurately measure blood pressure in children when compared to an arterial line. Enrolled patients will have the CareTaker PDA device placed on their finger during their operation to collect data for 30 minutes. Blood pressure readings from the CareTaker PDA device will be compared to measurements from the patient's indwelling arterial line, which will be placed as part of the patient's clinical care plan.

Inclusion Criteria: * Plan to receive an invasive arterial blood pressure monitor as part of their anesthesia care plan at the BCH Longwood campus Exclusion Criteria: * Patients with vascular or congenital heart disease known to affect large and small arteries * Patients who declined to participate.