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A pulse oximeter probe applied to a person's finger. A pulse oximeter is a medical device that indirectly monitors the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmogram that may be further processed into other measurements. [4]
Additionally, the shape of the PPG waveform differs from subject to subject, and varies with the location and manner in which the pulse oximeter is attached. Although PPG sensors are in common use in a number of commercial and clinical applications, the exact mechanisms determining the shape of the PPG waveform are not yet fully understood. [6]
Example pulse oximeter. Pulse oximetry is a method used to estimate the percentage of oxygen bound to hemoglobin in the blood. [10] This approximation to SaO 2 is designated SpO 2 (peripheral oxygen saturation). The pulse oximeter is a small device that clips to the body (typically a finger, an earlobe or an infant's foot) and displays its ...
Recommended Pulse Oximeters. Prices for pulse oximeters range from about $30 for a cheap no-name model up to $300 or more for a professional model.
1. Pulse oximeter 2. Non-invasive blood pressure monitoring 3. Inspired and expired oxygen, carbon dioxide, nitrous oxide and vapour 4. Airway pressure 5. A nerve stimulator whenever a muscle relaxant is used 6. Temperature (pre-op) and for any procedure >30 min anaesthesia duration B. Recovery from anaesthesia. 1. Pulse oximeter 2.
Pulse Decomposition Analysis (PDA), which is a pulse contour analysis approach, [18] is based on the concept that five individual component pulses constitute the peripheral arterial pressure pulse of the upper body. These component pulses are due to the left ventricular ejection and the reflections and re-reflections of the first component ...
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The functional oxygen saturation measured by this procedure is the basis for calibrating pulse oximeters. Pulse oximeters cannot be calibrated using physical procedures, but only by directly comparing the reported measurements and the parallel arterial oxygen saturation measured by hemoximetry in a group of healthy subjects. [citation needed]
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