منابع مشابه
Bias and precision of pulse oximeters and arterial oximeters.
We evaluated measurements of oxygen saturation from four noninvasive pulse oximeters, and two conventional arterial oximeters. Simultaneous measurements were obtained on each instrument on three different occasions in five healthy subjects breathing gas with an FIO2 of 1.00, 0.50, 0.21, 0.17, 0.15, 0.13 and 0.11. Mean bias relative to the sum of oxy-, carboxy-, and methemoglobins ranged from -0...
متن کاملAccuracy and precision of fourteen pulse oximeters.
Two sets of seven pulse oximeters (Criticare CSI-502; Nellcor-N200; Datex-Satlite; Physio-Control-Lifestat 1600; Critikon-Oxyshuttle; Ohmeda-Biox 3700; Ohmeda-Biox 3740; Radiometer-Oxi; Spectramed-Pulsat; Kontron-7840; Biochem-Ox2000; Invivo-4500; Engström-EOS; Novametrix-505) were studied in two groups of eight healthy subjects, aged 26-50 yrs. The transcutaneous oxygen saturation (SpO2) was c...
متن کاملThe Predictive Value of Pulse Oximeters for Pulse Improvement after Angiography in Infants and Children
BACKGROUND Information from pulse oximeter waves confirms the presence of a pulse and helps obtain waves from tissue when the supplying artery is not readily accessible. OBJECTIVES This study determined the predictive value of pulse oximeters for detecting improved arterial pulses after angiography. PATIENTS AND METHODS This cross-sectional, multi-center study included 467 4-day-old to 12-y...
متن کاملAn Introduction to Pulse Oximeters: Equations and Theory
Pulse oximeters are electrical devices used for measuring blood oxygen saturation and pulse rate. Since their conception they have gained widespread acceptance in the medical community. This paper primarily focuses on the theory behind pulse oximetry. Beginning with the Beer-Lambert s Law, which relates the intensity of light before and after an absorbing medium, manipulations are made so that ...
متن کاملStandard pulse oximeters can be used to monitor respiratory rate.
BACKGROUND One of the most important limitations of standard pulse oximeters is the inability to detect changes in respiratory rate until oxygenation is affected. This study sought to determine if analysis of the plethysmogram by wavelet transforms would enable the determination of changes in respiratory rate at an earlier stage. METHODS Ten healthy adult volunteers were monitored, breathing ...
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ژورنال
عنوان ژورنال: Anaesthesia and Intensive Care
سال: 1988
ISSN: 0310-057X,1448-0271
DOI: 10.1177/0310057x8801600118