background: the study was aimed to explore the association between arterial oxygen saturation (spo2) and spirometer parameters of disease severity in copd patients with a view to identify whether the pulse oximetry can be used as an alternative to arterial values in the clinical management of copd patients in a routine practice. materials and methods: thirty-one patients with copd were included...

Pulse oximeters are used to noninvasively measure oxygen saturation in arterial blood (SaO2). Although arterial oxygen saturation measured by pulse oximeter (SpO2) is usually indicated in 1% increments, the value of SaO2 from arterial blood gas analysis is not an integer. We have developed a new pulse oximeter that can measure SpO2 to one digit after the decimal point. The values of SpO2 from t...

Introduction: Several pathological conditions can reduce blood supply to the organs, among which burns can be mentioned. By developing the volume depletion and reducing the cardiac contractility, burns can cause hypoperfusion. Further, in ICUs, since the finger pulse oximetryis commonly used instead of the measurement of the nasal alar oxygen saturation, the use of finger probe restricts pulse ...

We have used an adaptive optics confocal scanning laser ophthalmoscope to assess oxygen saturation in small retinal vessels. Images of the vessels with a diameter smaller than 50 μm are recorded at oxygen sensitive and isosbestic wavelengths (680 and 796 nm, respectively). The vessel optical densities (ODs) are determined by a computer algorithm. Then, OD ratios (ODRs), which are inversely prop...

Purpose: To determine the usefulness of pulse oximetry in patients receiving iloprost infusion for treatment of critical limb ischemia unsuitable for revascularization. Material and methods: A total of 42 patients [28 male, mean age 61.80±5.81 years] were included. Patients were those who considered as unsuitable for revascularization based on angiographic study and received single-dose infusio...

This article provides a review of cerebral tissue oxygenation during immediate transition after birth in human neonates. Recommended routine monitoring, especially if resuscitation is needed, during this period includes arterial oxygen saturation and heart rate measured by pulse oximetry and electrocardiogram. However, there is increasing interest to monitor in addition with near-infrared spect...

The present study was undertaken in an attempt to contribute to the solution of the problem of the effect of rapid heart rate on the oxygen satu'ration of the arterial blood. In 1921 Barcroft, Bock and Roughton (1) reported that they had found normal saturation of the arterial blood in a patient during an attack of paroxysmal-tachycardia. Carter and Stewart (2) later reported a case in which th...

Decreasing arterial oxygen saturation has been reported in patients with cystic fibrosis during postural drainage when this was combined with other manoeuvres, which did not, however, include thoracic expansion exercises or pauses for relaxation and breathing control. When these features were included in an active cycle of breathing techniques during postural drainage in 20 patients with cystic...

Blood oxygen transport and tissue oxygenation were studied in 28 calves from the Belgian White and Blue breed (20 healthy and 8 hypoxaemic ones). Hypoxaemic calves were selected according to their high respiratory frequency and to their low partial oxygen pressure (PaO2) in the arterial blood. Venous and arterial blood samples were collected, and 2,3-diphosphoglycerate, adenosine triphosphate, ...