Summit L250 Test procedure

Title: Portable Doppler Date 10-16-2010
By Summit Doppler, Golden, CO
File = summit.doc

DISCLAIMER: THIS PROCEDURE PROVIDED "AS IS" AND
WITH POSSIBLE FAULTS. USER MUST VERIFY BEFORE
USE. NEITHER PROVIDER NOR WEBSITE ASSUMES ANY
RESPONSIBILITY FOR ITS USE.

1. General
Applies to the Summit Model L250 (but
essentially identical for other hand held
Doppler devices).

2. Reference Documents -- none

3. Tools / Fixtures / Labels

Ultrasound Gel

4. Basic PM Procedure

4.1. Physical – Check for case cracks and cord integrity.

4.2. On/Off – toggle action

4.3. Volume Adjust --

4.4. Battery Check --

4.5. Sensitivity Check --

4.5.1. If this unit includes a fetal (3 Mhz) probe, see illustration for conducting a simple

“palm test.”

4.5.2. If this unit includes a vascular probe (5 – 8 Mhz), see illustration for conducting an

arm arterial reading.

OBSTRETICAL PROBE CHECK VASCULAR PROBE CHECK

After applying a small amount of coupling gel,
move the probe along the palm near the thumb.
Here the normally low blood flow approximates

The picture above shows the location for a
good arterial flow signal. Coupling gel is
not visible.

the hard-to-detect fetal heartbeat.

Note: The above results by their nature are qualitative, and assume the user has some prior
experience with Doppler results. Excessive noise with a weak pickup signal can indicate a
cracked probe crystal.