Veterinary monitor user’s manual
Chapter 5-11
Adjust alarm
Select this
option
to enter the configuration of alarm limits; conduct the
configurations by turning the trim knob to select high or low limits and exit by selecting
〈
EXIT
〉
. The upper part is the high limit and the lower one is the low limit.
RESP
The configuration range of alarm high limit is
0
～
150rpm
continuously
adjustable, no lower than the low limit; The configuration range of alarm low limit is
0
～
150rpm
continuously adjustable, no higher than the high limit.
RESP alarm
Select <
ON
> to enable RESP over limit alarm; select <
OFF
> to disable
RESP over limit alarm.
5.2.5 Maintenance and Cleaning
No special operation demanded. Please refer to
chapter 5.1.7
.
5.3 Measurement of SpO
2
/Pulse
5.3.1 Principles of Measuring
The measurement of degree of blood oxygen saturation (also known as pulse oxygen
saturation, usually shortened as SpO
2
) adopts the principles of light spectra and volume
tracing. The LED emits lights with two specific bandwidths, which are selectively
absorbed by hemoferrum and desoxyhemoglobin. The optical receptor measures the
changes in the light intensity after the light passes the capillary network and estimates the
ratio of hemoferrum and the total hemoglobin.
Degree of pulse oxygen saturation %=
globin
desoxyhemo
+
hemoferrum
hemoferrum
×
100%
Abnormal hemoglobin, carboxyhemoglobin, oxidative hemoglobin are not directly
measured, for they are not the affecting factors in the measurement of
SpO
2
The sensor measurement wavelengths are nominally 660nm for the Red LED and
940nm for infrared LED.
Monitor adopts FFT filter and signal correlation techniques to deal with SpO
2
module’s
pulse waveform signals. Before the measurement of SpO
2
, the noise produced in the false
trace is smoothed so as to the eliminate disturbance in the measurement of saturation. In
case of weak blood pulse, the noise produced by some confinements of electrical
properties is greatly reduced.
The monitor is designed for measurement and recording of functional saturation.
5.3.2 Preparatory Steps before the Measurement of SpO
2
/Pulse
1) Plug the SpO
2
sensor cable into the SpO
2
socket of the monitor.
2) Select a sensor and clip that is appropriate for the patient.
3) Clean the sensor and sensor clip separately before and after each use.
4) Put the sensor on the tongue or ear of animal. The preferred sensor application site for
canine, feline and equine animals is on the tongue, with the sensor’s optical components