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A Laboratory Comparison of the Newest "Motion-Resistant" Pulse Oximeters During Motion and Hypoxemia
Resistance to patient motion and fast response to respiratory events are two of the defining characteristics of "Next Generation" pulse oximetry. These researchers tested the motion tolerance of five current generation oximeters during hypoxemia when set in their fastest SpO2 response modes averaging times. Using their standardized motion/hypoxemia protocol, they...
The Effects of Motion on the Performance of Pulse Oximeters in Volunteers
Pulse oximetry is considered a standard of care in both operating rooms and post anesthetic care units. It is also widely used in critical care settings. Pulse oximeters may fail to provide valid SpO2 data in various situations. Motion artifact is a common cause of oximeter failure and loss of...
Adaptive Probe Off Detection Technology (APOD)
APOD is a suite of complex and powerful signal processing algorithms that carefully analyze the incoming signal to determine if the pulse oximeter sensor is on or off the patient. Adaptive Probe Off Detection APOD delivers enhanced protection against erroneous pulse rate and arterial oxygen saturation readings when a sensor...
Perfusion Index (PI)
Perfusion Index, or PI, is a relative assessment of the pulse strength at the monitoring site. Perfusion Index is a numerical value that indicates the strength of the IR infrared signal returning from the monitoring site. The LED-based Masimo pulse oximeters such as Rad-5 and Rad-5v display PI as the...
More Reliable Oximetry Reduces the Frequency of Arterial Blood Gas Analyses and Hastens Oxygen Weaning After Cardiac Surgery
While pulse oximetry is an accepted standard of care, among the complaints against pulse oximetry, high failure rates in monitoring the seriously ill and high frequency of false alarms predominate. These researchers tested Masimo SET, a new, "innovative" technology claiming to have remedied the problems long associated with pulse oximetry,...
Evaluation of a New Reflectance Forehead Sensor in Detecting Oxygen Desaturation in Patients Undergoing Polysomnography
Pulse oximetry provides a critical parameter in the diagnosis and treatment of sleep apnea. This group of researchers has studied Masimo SET pulse oximetry in the past and found it to have better fidelity for Sleep-Disordered Breathing testing as compared to Nellcor pulse oximetry. In this study, these researchers wanted...
Detection of Hyperoxaemia in Neonates: Data From Three New Pulse Oximeters
The researchers objective was to investigate the ability of new generation pulse oximeters to detect hyperoxemia by maintaining a high degree of sensitivity [ability to detect hyperoxemia too much oxygen in the blood] while maintaining an acceptable level of specificity ability to not falsely indicate hyperoxemia while monitoring neonates. Reliable...
Perfusion Index - A Valuable Tool to Assess Changes in Peripheral Perfusion Caused by Sevoflurane
The forearm-fingertip temperature gradient is regularly used to assess arterio-venous shunt thermoregulatory vasomotion of patients undergoing anesthesia. These researchers, however, believed that the forearm-fingertip temperature gradient might not be sensitive enough to reflect - accurately and in real time - changes in peripheral perfusion. These researchers were particularly interested in...
Respiratory Variations in SpO2 With a Fast Pulse Oximeter
The researchers tested the speed of processing changing pulse rate and oxygenation information with Masimo's FastSat algorithm enabled in an assessment of Cyclical Recruitment of Atelectasis CR, a condition thought to contribute to ventilator-associated lung injury VALI. Because CR causes arterial PO2 changes throughout the breathing cycle, a pulse oximeter...
Is Pulse Search Technology a Predictor of Unreliable Saturation Monitoring? A Survey of Pulse Oximetry Validity
To increase clinical confidence in true alarm situations, and to reduce lack of confidence in good data during events of patient motion, manufacturers claiming motion tolerant pulse oximetry have attempted to provide easy and continuous assessments of the quality of the signal used to interpret pulse rate and oxygenation information....
A Comparison of Nellcor N-395, N-595, and Masimo Radical Pulse Oximeters During Motion and Hypoxemia
Steven Barker, PhD, MD, had developed a standardized volunteer protocol that has been successfully used to compare the performance of many pulse oximeters during combined motion and hypoxemia. This laboratory protocol has yielded results that are consistent with those of published clinical studies. In the experiments presented here, these researchers...
Novel Concept of Measuring Percutaneous Oxygen Saturation Monitor during Cardio-Pulmonary Bypass
During cardiopulmonary bypass CPB, oxygenation is often only intermittently monitored via arterial blood gas analysis ABG. CPB may not generate sufficient pulsations for pulse oximetry to work continuously. These researchers studied the use of external oscillations to produce accurate SpO2 measurements during CPB. Sampling of ABG every 30 minutes is...
Comparison of Two New Generation Pulse Oximeters: The Masimo Radical and the Philips Viridia
"Next generation" pulse oximeters claim motion and low perfusion tolerance. In the NICU, where pulse oximetry has been useful in preventative protocols, as well as, for the detection of life-threatening oxygenation events, the combined effects of low perfusion, motion, and unpredictable interference levels still challenge some pulse oximeters' ability to...
Can Changes in Clinical Practice Decrease the Incidence of Severe Retinopathy of Prematurity in Very Low Birth Weight Infants?
The researchers noted there was a wide variability in the incidence of severe Retinopathy of Prematurity ROP in very low birth weight infants reported globally by Neonatal Intensive Care Units NICUs. They believed, however, that strict management of O2 delivery and monitoring to minimize episodes of hyperoxia and hypoxia might...
Comparison Between Two Oximeter Technologies in the Detection of Desaturation During Polysomnography
These researchers studied the difference in the ability to capture desaturation events during sleep disordered breathing testing polysomnography between two "motion resistant" technologies. Their intent was to investigate whether the difference in the technologies could have a significant effect on the ability to qualify patients for needed CPAP treatment under...
Comparison Between Masimo SET, Nellcor OxiMax and Nellcor OxiSmart XL Oximeters in the Detection of Desaturation During Polysomnography
The researchers compared Nellcor's new OxiMax pulse oximeter technology to Masimo SET and Nellcor OxiSmart XL. The OxiMax pulse oximeter was operated with Nellcor's new MaxFast forehead reflectance sensor, while the Masimo SET oximeter was operated with the LNOP Adt digit sensor, and the OxiSmart XL with Max-A digit sensor....
A Comparison of the Performance of Pulse Oximeters during Blood Pressure Cuff-Induced Hypo perfusion in Volunteers
Pulse oximetry is considered a standard of care in the operating room, Post anesthesia care unit, and in all critical care settings. In some patients, the pulse oximeter sensors must be placed on the same arm as the blood pressure cuff. While this is not in accordance with the manufacturers'...
An Evaluation of Pulse Oximetry Pre, During, and Post-Cardiopulmonary Bypass
The researchers had previously shown that a new generation pulse oximeter worked at lower blood flow than conventional pulse oximeters in the recovery room and in volunteers. Cardiac surgery patients present significant challenges to monitoring SpO2 due to poor perfusion, cardiac dysrhythmias, altered peripheral morphology and other issues. In this...
The Pulse Oximeter Perfusion Index as a Predictor for High Illness Severity in Neonates
The perfusion index PI of a pulse oximeter is the pulsatile signal indexed against the non-pulsatile signal, expressed as a percentage (AC/DC X 100). Since this potential measure of peripheral perfusion does not require direct caregiver observation, which can be compromised by factors such as unpredictable skin coloration, its value...
Reliable Pulse Oximetry During Exercise Testing
This paper presents the results of a study on the Masimo SET system's ability to accurately measure SpO2 and pulse rate during treadmill exercise. They wanted to see if Masimo SET had fewer "dropouts" and fewer erroneous numbers that plague conventional pulse oximeters during this type of exercise trial. The...
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Surgical and Medical Instrument Manufacturing: 339112Brought to you by IBMSponsored Resources
