LE 5002 Non Invasive Blood Pressure Meter
USER MANUAL
24
Figure 18. Cuff and Transducer placing in the tail.
•
Adjust the instrument GAIN until a proper pulse signal level is achieved on the
pulse level display, avoiding unnecessary amplification increases. Such
increases should be avoided because if the graph were to remain on the outside
area it might not inform on the presence of artefacts or important frequency
instability (the graph would oscillate). Once the message “(PULSE LEVEL
READY)” is shown and the pulse level bar reaches the READY label on the
digital display, a proper signal amplification has been achieved. The BEATS
LED will flash at each heartbeat, and the current heart rate is shown under the
BPM label on the digital display.
•
If a scanner is being used, select the animal using the scanner selector. Be sure
that a proper pulse level is reached with all animals. If any animal does not reach
a proper pulse level, adjust its transducer position until an adequate signal level
is achieved, or readjust the GAIN controller.
•
Take special care with the stability of the pulse signal level, as the accuracy of
the diastolic pressure measurement is strongly dependent on it. Animal
movements are also detected by the pulse transducer and would mask the blood
pressure signal.
•
If the maximum gain is reached without obtaining an adequate and stable pulse
level, check the transducer fitting or increase the vasodilatation level.
•
Press the START BUTTON, and the measurement procedure will start as
indicated in the previous chapter.
•
Once the cuff pressure is sufficient to totally occlude the blood flow, the pulse
signal disappears, and the pressure keeps increasing slightly until beginning a
backward movement. When the pulses reappear, the display will show the
systolic pressure value.
o
If the system’s pressure reaches 320 mmHg (because the cuff has not
collapsed), and the pulse level does not decrease, the message “Pressure
300 mmHg” notifies the user of this and the trial is cancelled (the
message “deflating” appears while the inner pressure of the system is
being zeroed).
o
If the diastolic pressure is not found for any reason, the appliance will
also cancel the measurement.
