Automated
External Defibrillator with CPR Feedback |
| Technical
Application Note |
Measuring CPR Chest Compression
Failure to adequately compress a victim's chest
is a common error during CPR. The force required
to properly compress a victim's chest 1-1/2 to
2 inches varies depending on the patient's build
and anatomy. Until now, only force and pressure
sensors have been available.
New technology in ZOLL's CPR-D•padz includes
a hand placement locator, an accelerometer, electronics,
and a sophisticated processing algorithm. This
system accurately measures CPR compression and
converts the motion of the accelerometer over
time into distance moved. The infrequent rescuer
now has help providing CPR support for the victim.
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One Electrode Size Fits All
A one-piece electrode design must account for
anatomical variation in the patient population.
The design of ZOLL's CPR-D•padz is based
on extensive human anthropometric data and studies
designed to accommodate the wide range of patient
sizes and shapes and to ensure that a one-piece
electrode meets the needs of emergency AED use.
The design developed for the CPR-D•padz
meets the anthropometric characteristics of 99%
of human chest anatomy. A special feature lets
the rescuer separate the apex electrode to cover
the other 1% of the population and other anatomical
variations that require special adaptation.
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Simplified Electrode Placement
Simplifying electrode placement is critical to
widespread use of AEDs. Labeling helps but is
often overlooked or discarded in an emergency
that is sudden and unanticipated. The infrequent
rescuer is easily confused when looking at a victim
as to "left," "right," "up,"
and "down." Two separate electrodes
cause concern over incorrect placement and technical
complications if electrodes stick together before
being placed correctly on the patient.
The unique one-piece design of ZOLL's CPR-D•padz
addresses these problems by orienting the simple
design to the head while using the easily remembered
CPR landmark (the sternum) as the key placement
cue. Packaging is then removed by a simple pull
after positioning. Because this is the same placement
taught for CPR hand position, AED users benefit
from having to remember only one easy landmark
for both interventions. |
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