3.
Affix the Sensor to the patient in the chosen location.
•
Cerebral Use
(Figure 16): Select the site on the forehead above the eyebrow and just
below the hairline where the Sensors will be linearly aligned.
Figure 16:
Applying Sensors (Cerebral)
•
Non-Cerebral Use
(Figure 17): Select the site that provides the ideal access to the
desired skeletal muscle tissue (if muscle cannot be palpated, too much adipose or
edema may be present).
–
Arm: Position Sensor over the deltoid (shoulder), biceps (upper arm), or
brachioradialis muscle.
–
Leg: Position Sensor over the quadriceps (upper leg), gastrocnemius (calf), or tibialis
(calf) muscle. Apply the Sensor with the connector towards the feet.
–
Flank/Abdomen: Position Sensor over the Latissimus dorsi (flank) or external oblique
(abdomen) muscle.
Notes:
When monitoring muscle tissue, place the Sensor centrally over the selected
muscle bed (e.g., middle of upper half of the lower leg as diagrammed).
A muscle bed with significant atrophy may not provide enough tissue for
monitoring.
When monitoring for the effects of vascular obstruction in a limb, place a
Sensor on both the limb of concern and in the same location on the opposing
limb.
Warnings:
Exercise extreme care when applying Sensors. Sensor circuits are conductive
and must not come into contact with other grounded, conductive parts other
than EEG or entropy monitors. Such contact would bridge the patient’s isolation
and cancel the protection provided by the Sensor.
Failure to apply Sensors properly may cause incorrect measurements.
Misapplied Sensors or Sensors that become partially dislodged may cause
either over- or under-reading of oxygen saturation.
Do not position a Sensor under the weight of the patient. Prolonged periods
of pressure (such as taping over the Sensor or the patient lying on a Sensor)
transfers weight from the Sensor to the skin, which can injure skin and reduce
Sensor performance.
The Sensor site must be inspected at least every 12 hours to reduce the
risk of inadequate adhesion, circulation, and skin integrity. If the circulatory
condition or skin integrity has deteriorated, the Sensor should be applied to
a different site.
a
Non-Adhesive
Small Sensor
26
CAS Medical Systems, Inc.
Monitoring Essentials: Attaching Sensors to the Patient
