introduction:  one ofdiagnostic criteria for acute lung injury and acute respiratory distress syndrome is  pao2/fio2 (pf) ratio 300 for ali or 200 for ards. this criteria requires invasive arterial sampling. measurement of spo2/fio2 (sf) ratio by pulseoximetry may be a reliable non invasive alternative to the pf ratio.   methods and materials: in a cross sectional study we enrolled 105 sample o...

pulse oximetry measures the relative concentration of arterial oxygenated hemoglobin and reduced hemoglobin. this paper presents the design of a pulse oximeter, which measures the presence of a third substance, carboxyhemoglobin (hbco), by unfiltered leds at 660 nm, 810 nm, and 940 nm. background information is given on the theory of pulse oximetry. theoretical approximations and calculations w...

Pulse oximetry measures the relative concentration of arterial oxygenated hemoglobin and reduced hemoglobin. This paper presents the design of a pulse oximeter, which measures the presence of a third substance, carboxyhemoglobin (HbCO), by unfiltered LEDs at 660 nm, 810 nm, and 940 nm. Background information is given on the theory of pulse oximetry. Theoretical approximations and calculations w...

neonates with respiratory distress syndrome (rds), who are treated according to insure protocol; require arterial blood gas (abg) analysis to decide on appropriate management. we conducted this study to investigate the validity of pulse oximetry instead of frequent abg analysis in the evaluation of these patients. from a total of 193 blood samples obtained from 30 neonates <1500 grams with rds,...

main aim of this research was comparing mild swimming and recoveries jacuzzis recovery on blood lactic acid and blood pressure of swimmers. we used descriptive statistics (placebo, median, mean, variance, and standard deviation) for analyzing data in order to compare changes of saturated percentage of blood cell. we collected data from pools of mashhad and we used from 45 person for collecting ...

OBJECTIVE To evaluate pulse oximetry for detection of congenital cyanotic heart disease in sick neonates using echocardiography as gold standard. METHODS Pulse oximetry readings were taken at admission from 950 neonates from right upper limb and either foot with infant breathing room air. Pulse oximetry was considered abnormal if oxygen saturation at room air measured <90% or difference betwe...

background pulse-oximetry (spo2) widely uses as a help tools for therapeutic interventions in the pediatric intensive care units (picu). the aim of this study was to evaluate the validity of spo2 in measuring of oxygenation index (oi) in children. materials and methods in a descriptive analytical study, 100 patients who were admitted to picu tabriz children&apos;s hospital were studied. oxygena...

Why Nellcor Developed the OxiMax Pulse Oximetry System The introduction of the OxiMax Pulse Oximetry System brought Nellcor’s fifth-generation pulse oximetry technology to market and marked a fundamental shift in one of the design tenets of pulse oximeters. In the first four generations of Nellcor pulse oximetry, beginning with the N-100 Pulse Oximeter introduced in the early 1980s, we focused ...