Detailed Description:~The VitalTracer non-invasive, wireless monitoring device is based on reflective photoplethysmograph (PPG) technology. It measures several vital signs, including Oxygen saturation, ECG, blood pressure, respiratory rate, heart rate and skin temperature. The data is transmitted to VitalTracer's application (in Google Play) and is available as a full monitoring system in a hospital setting. The aim of this study is to compare the VitalTracer monitor with the invasive method of blood pressure and SPO2 measurements. The study population includes 40 patients admitted to NICU and PICU. Once in the intensive care unit, the investigator will attach the VitalTracer non-invasive monitor (both a VT-watch and a VT-patch), which are identical in terms of the monitoring system, and monitor the participants for 24 hours. Though both methods are continuous, the investigator will record the vital signs every 1 minute during the 24 hours of the study.
In this clinical study, the investigator will compare vital signs measurements obtained using the non-invasive, wireless VitalTracert monitoring devices (both a VT-Watch and a VT-Patch) to a proprietary continuous physiological data collection tool in 40 patients including 16 patients with an invasive arterial line catheter (radial or femoral) at the pediatric intensive care unit.