Welch Allyn Spot Vital Signs 420 Series User Manual

SpO, is generally measured via pulses detected using a finger sensor and performs most
accurately with the finger clip sensor. All fingers, except the thumb, can use the finger clip
sensor. For certain situations, measurement and alternate site measurements for SpO, can
include the earlobe, forehead, and toes. These situations require special sensors. The finger clip
sensor is recommended for spot checks or short-term evaluation (less than 60 minutes). Patient
supervision is required, since the Spot Vital Signs has no alarm capability.
Oxygen saturation and pulse rate are displayed on the LCD screen. On each detected pulse, the
pulse signal bar graph flashes. The intensity of this signal is a simple visual indicator of waveform
signal strength and can identify possible situations of inadequate pulsatile nature of tissue for an
accurate SpO, reading. The update interval bar of the bar graph should correspond to the
patient's pulse rate. This is an indication of the quality of the SpO, signal.
Pulse Rate
The Welch Allyn Spot Vital Signs determines pulse rate as an adjunct to blood pressure measure-
ment and SpO, measurement.
The pulse rate, in beats per minute, is determined primarily from the SpO5 measurement
methodology. In the case where SpO, is not available or is disabled, the pulse rate display is
derived by data from the blood pressure measurement method.
14 Welch Allyn

Welch Allyn Spot Vital Signs 420 Series Specifications

General

Brand	Welch Allyn
Model	Spot Vital Signs 420 Series
Category	Medical Equipment
Language	English