Pulse Oximeters

       Pulse Oximeters are monitors that provide real-time measurement of a patient’s pulse rate and arterial oxygen saturation (the oxygen-carrying capacity of the blood’s hemoglobin, expressed as a percentage; normal is in the high 90’s). A disposable or reusable probe is placed on the patient’s finger (optional probes can be used on ear or tongue for some units.) The probe emits an infrared light from one side of the finger and captures the residual light that passes through the finger on the other side. The probe transmits this data to the monitor, which calculates the oxygen saturation of the blood. Used for patients with respiratory problems, and is required by law whenever a patient is under anesthesia. Note that these pulse oximeters measure Functional oxygen saturation, which is oxygenated hemoglobin expressed as a percentage of the hemoglobin that is capable of transporting oxygen. In contrast, some other laboratory instruments, such as blood gas analyzers or CO-oximeters, report Fractional oxygen saturation, which also measures dysfunctional hemoglobin. It is therefore not likely that the readings from these devices and the ones on a pulse oximeter will agree.

Healthdyne 930 Pulse Oximeter

Healthdyne (Respironics) 930 Pulse Oximeter

The Healthdyne 930 Pulse Oximeter provides continuous measurement and display of oxygen saturation and pulse rate, via an external sensor. Three different modes of operation can be selected using a switch on the bottom panel: Hospital mode, in which all displays and alarms are functional; Off mode, in which all audible alarms are silenced; and Home mode, where LED readout displays are not functional, but alarm conditions will still cause an audible alarm.

The oximeter is programmed to various alarm limit conditions using position switches on the bottom panel. Limits and alarms include High and Low Oxygen, Fast and Slow Pulse, Loose Connection, and Low Battery. The oximeter also has a "sibling alarm" for accidental power-off conditions.

The unit runs on AC power using a detachable AC Charger (standard accessory), and has an internal rechargeable battery that can last for approximately 24 hours of continuous monitoring, with a 24-hour recharge time.

Standard Accessories

901   Carrying Case (interchangeable with 970S Apnea Monitor)
913   AC Charger (interchangeable with 970S Apnea Monitor)
936   Adult Finger Sensor
938   Patient Cable

Optional Reusable Accessories (each)

934   Infant Flex Finger/Toe Sensors
935   Neonate Outstep Foot Sensors
948   Adult Ear Sensor
951   Adult Reflectance Sensor (forehead)
953   Adult Flex Sensor (finger)

Optional Disposable Accessories

934D   Infant Flex Finger/Toe Sensors                         10/cs
954      Hydrogel Tape Strips (for securing 934)           25/cs
940      Double-stick adhesive (for securing 934)          100/cs
942      Overwrap tape strips (for securing 934/935)     100/cs
947      Posey Wraps (for securing 934/935)                  12/cs
953D   Adult Flex Sensor                                                10/cs
937D   Pediatric Finger/Toe Sensor                               10/cs