B-3
PHILIPS MEDICAL SYSTEMS
B
periodic self-tests Daily, weekly, and monthly tests automatically conducted by the OnSite when it
is in its standby mode. The tests monitor many key functions and parameters of
the OnSite, including battery capacity, pads cartridge readiness, and the state of
its internal circuitry.
protocol A sequence of operations performed by the OnSite to direct patient care in the
AED mode.
protocol pause A pause provided by the OnSite after a shock series, during which the
responder can administer CPR. The OnSite does not conduct background
monitoring of the patient’s heart rhythm during this pause.
Ready light A green LED showing the readiness for use of the OnSite. A blinking Ready light
means the OnSite is ready for use; a solid Ready light means the OnSite is being
used.
rhythm analysis See “SMART analysis.”
Shock button An orange button with a lightning bolt symbol on it, located on the front of the
OnSite. The Shock button flashes when a shock is advised. You must press the
button for the shock to be delivered.
shockable rhythm A heart rhythm that the OnSite determines is appropriate for defibrillation, such
as ventricular fibrillation and some ventricular tachycardias associated with
sudden cardiac arrest.
shock series interval A configurable interval between shocks, used by the OnSite to decide if the
shocks are part of the same shock series.
SMART analysis The proprietary algorithm used by the OnSite to analyze the patient’s heart
rhythm and determine whether the rhythm is shockable.
SMART biphasic
waveform
The patented, low-energy defibrillation shock waveform used by the OnSite. It is
an impedance-compensated biphasic waveform. Used with the Adult SMART
Pads, it delivers 150 Joules, nominal, into a 50 ohm load; used with the Infant/
Child SMART Pads, it delivers 50 Joules, nominal, into a 50 ohm load.
SMART NSA pause See “NSA pause.”
SMART Pads The adhesive pads, supplied in a cartridge, used with the OnSite. Pulling the
handle on the cartridge turns on the OnSite and opens the cartridge. The pads
are applied to the patient’s bare skin and used to detect the patient’s heart
rhythm and to transfer the defibrillation shock. Only HeartStart SMART Pads
can be used with the OnSite.
standby mode The operating mode of the HeartStart OnSite Defibrillator when a battery has
been installed, and the unit is turned off and ready for use when needed. Shown
by blinking green READY light.
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