PHILIPS MEDICAL SYSTEMS
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1 INTRODUCTION TO THE HEARTSTART ONSITE
DESCRIPTION
The Philips HeartStart OnSite Defibrillator M5066A (“OnSite”) is part of the
Philips HeartStart HS1 family of automated external defibrillators (AEDs). Small,
lightweight, and battery powered, the OnSite is designed for simple and reliable
operation.
SUDDEN CARDIAC ARREST
The OnSite is used to treat ventricular fibrillation (VF), a common cause of
sudden cardiac arrest (SCA), and certain ventricular tachycardias (VTs). SCA is
a condition that occurs when the heart unexpectedly stops pumping. SCA can
occur to anyone – infant, child, adult, male or female – anywhere, at any time.
Many victims of SCA do not have warning signs or symptoms.
VF is a chaotic quivering of the heart muscle that prevents it from pumping
blood. The only effective treatment for VF is defibrillation. The OnSite treats VF
by sending a shock across the heart, so it can start beating regularly again.
Unless this is successful within the first few minutes after the heart stops
beating, the victim is not likely to survive.
INDICATIONS FOR USE
The OnSite should be used to treat someone you think may be a victim of SCA.
A person in SCA:
• does not respond when shaken, and
• is not breathing normally.
If in doubt, apply the pads. Follow the voice instructions for each step in using
the defibrillator.
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