pulse oximeter


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oximeter

 [ok-sim´ĕ-ter]
a photoelectric device that measures oxygen saturation of the blood by recording the amount of light transmitted or reflected by deoxygenated versus oxygenated hemoglobin.
finger oximeter a pulse oximeter whose sensor is attached to a finger, so that the oxygenation of blood flowing through the finger can be determined. See illustration.
Finger oximeter. Pulse oximetry transducer properly placed on a finger. Fold the Oxisensor over the end of the digit. Align the other end of the sensor so that the two alignment marks are directly opposite each other. Press the sensor into the skin. Wrap the adhesive flaps around the digit. Courtesy of Nellcor Puritan Bennett Corp., Pleasanton, CA.
pulse oximeter an oximeter that permits measurement of oxygen saturation in an artery by recording the different modulations of a transmitted beam of light by reduced hemoglobin and oxyhemoglobin as seen during the pulse. A component of the oximeter analyzes the variations in light absorption and provides a readout of the per cent of saturation of the hemoglobin. A saturation above 90 per cent corresponds to a PaO2 of 60 torr or higher. The presence of fetal hemoglobin, carboxyhemoglobin, or intravascular dyes may alter the accuracy of a pulse oximeter. In these instances a SaO2 of 90 per cent may not be associated with a PaO2 of greater than 60 torr.

pulse oximeter

n.
A device, usually attached to the earlobe or fingertip, that measures the oxygen saturation of arterial blood by sensing and recording capillary pulsations.

pulse oximetry n.

pulse oximeter

Critical care A device that measures the difference in the light transmitted by oxygenated and deoxygenated Hb caused by their differences in light absorption within the circulation; the PO takes advantage of these differences and provides an indirect measurement of the arterial Hb O2 saturation

pulse ox·i·me·ter

(pŭls oks-im'ĕ-tĕr)
A spectrophotometric device that noninvasively estimates saturation of arterial oxyhemoglobin (SaO2) by use of selected wavelengths of light.

pulse oximeter

A device for the continuous monitoring of the blood oxygen levels, both by visible and audible means, during general anaesthesia. This is a major aid to patient safety as a very small drop in blood oxygenation is immediately apparent, alerting the anaesthetist to investigate the cause. A small transducer device is clipped to, or pushed over, a finger of the patient and connected to the main equipment by a light cable.
References in periodicals archive ?
The global smart pulse oximeters market can be segmented on the basis of product type and end-user.
In their study, dysvascular digits requiring repair or amputation were found to have pulse oximeter readings of less than 84% oxygen saturation.
Recent published wearable pulse oximeter studies have used reflectance-type sensors, but most of them have not been tested for subjects with various skin colors, especially dark skin color.
3 Therefore, it is suspected that burns related to pulse oximeters are dose-dependent and that they may be circumvented by the use of a lower dose that is still sufficient for parathyroid localization.
Bias values were acceptable in patients with Sa[O.sub.2] values over 93% but exceeded precision values recommended by experts for clinical use of a noninvasive pulse oximeter to reflect Sa[O.sub.2].
The pulse oximeter was developed in Japan in the mid-1970s but only entered clinical practice a decade later.
All my comments in the article refer to saturation as measured by a pulse oximeter.
Unexpectedly low pulse oximeter readings in a boy with unstable hemoglobin Koln.
1) The pulse oximeter is a light meter (photometer).
In developing the TruSat pulse oximeter, GE Healthcare engineers explored a new prototyping process for creating the oximeter's outside bumpers--plastic parts that protect the oximeter, hold it in place during use, and help provide easy plug-in access.
Among the items Thomas Wildman offered for sale were a defibrillator, a pulse oximeter which measures heart rate, an oxygen cylinder, oxygen masks, neck collars, burns dressings and bandages.