User manual

12
Tips for using the Doppler:
Review the original Vet-Dop procedure video. (NOTE: This video shows the older Vet-
Dop, but the procedure is the same.)
Do not strap the transducer to the limb if the animal is awake. The slightest movement
of the foot or limb may move the sensor off the artery and the signal will be lost. By
holding the sensor in place, a slight movement of the thumb can relocate the signal.
Use the highest audio volume that is comfortable. Although headphones are somewhat
cumbersome, they minimize the stress of the procedure. Speaker noise will frighten
some animals, especially cats, elevating their blood pressure. The headphones bypass
the external speaker.
Sensor failures occur mostly from damage to the sensor cable. Take care not to sharply
bend the cable particularly at the junction of the sensor face and the plug. Protect the
sensor face from contact with hard or sharp objects.
Ultrasound gel is preferred, however KY jelly or any water based gel is a suitable
alternative. Do not use ECG paste, baby oil or any other oil based fluid with the sensor
head. These products may cause deterioration of the resin surface of the sensor.
Remove gel from the sensor face after each use with a wet, fine bristle toothbrush.
Comfortably extend the animals limb when taking the reading. A flexed limb may
abnormally restrict the blood flow through the artery giving no readings or falsely low
readings.
Signal acquisition depends on limb temperature, limb flexation, vasoconstrictive drug
use, amount of hair or fur and proper lubrication of the site. (NOTE: Pre-wetting the
limb with alcohol or water may increase detection.)