Pulse oximetry utilizes the technique of photoplethysmography to estimate arterial oxygen saturation (SpO(2)) values. During hypothermia, the amplitude of the photoplethysmograph (PPG) is compromised which can lead to inaccurate estimation of SpO(2). A new mutlimode PPG/pulse oximeter sensor was developed to investigate the behaviour of PPGs during conditions of induced hypothermia (hand immers...

Dental anxiety is very common, affecting 22% of the population. One way to increase access to dental care is by the use of BDZs in conscious sedation. These drugs are known to be safe when titrated. BDZs work by stimulating GABAA receptors within inhibitory pathways of the CNS. A consequence of this is a reduction in respiratory drive. Thus assessing saturation of peripheral oxygen (SpO2) is ma...

To compare pulse oximetry measurement bias between infants with hypoxemia with either dark skin or light skin with Masimo Radical 7 and Nellcor Oximax. There was no significant difference in systematic bias based on skin pigment for either oximeter.

Introduction: Fingertip pulse oximeters are commonly used as non-invasive modes of measuring oxygen saturation (SpO2) and heart rate (HR) in critical care units. In these cases, a shorter duration of time required obtaining the measurement and time to stabilization is crucial. Objective: Our aim was to compare two new generation pulse oximeters with respect to latency in the fi rst reading and ...

CAN J ANESTH 55: 6 www.cja-jca.org June, 2008 References 1 Melarkode K, Prinzhausen H. Hemoglobin M variant and congenital methemoglobinemia: methylene blue will not be effective in the presence of hemoglobin M. Can J Anesth 2008; 55: 129–30. 2 Schweitzer SA. Spurious pulse oximeter desaturation due to methaemoglobinaemia. Anaesth Intensive Care 1991: 19: 269–71. 3 Cassady G. Transcutaneous mon...

With the continuous aging of the populations in developed countries, the medical requirements of the aged are expected to increase. In this paper, a ring-type pulse oximeter finger sensor and a 24-hour ambulatory heart rate monitoring system for the aged are presented. We also demonstrate the feasibility of extracting accurate heart rate variability measurements from photoelectric plethysmograp...