Ease In Compensation Of Patient Impedance - Progetti Rescue Life 9 Instructions For Use Manual

Research has shown that chest resistance can vary significantly from patient to patient. Patients with low
impedance are generally easier to defibrillate because the flow of current meets little resistance. Those
with higher impedance may be more difficult to defibrillate. According to the International Guidelines 2000
by the American Heart Association (AHA) in collaboration with the International Liaison Committee On
Resuscitation (ILCOR), average adult impedance is 70-80 ohms. Defibrillation energy should be designed to
optimize the delivery of current over a wide range of patient impedances. Too much current to the
myocardial cells can cause damage to the cells and result in an unsuccessful defibrillation. Too little current
to the myocardial tissue cells will not depolarize the cells and result in an unsuccessful defibrillation.
The waveform biphasic technology:
1) Makes it easy to compensate the shock waveform to match the patient impedance,
2) Is more efficient than monophasic technology,
3) Delivers enough energy for restoring heart rhythm.

EASE IN COMPENSATION OF PATIENT IMPEDANCE

Through Biphasic technology, defibrillation shock delivery is controlled while taking into consideration the
patient's impedance. The patient's impedance is measured through the defibrillator electrodes. According
to the measured patient's impedance, e-cube Biphasic technology adjusts the duration of current flow to
optimize the effectiveness of the shock delivery. E-cube Biphasic technology is based on 3 core
technologies: 1 The technology for measuring the patient's impedance, 2 The technology for controlling the
voltage level to be delivered, 3 The technology for controlling the duration of current flow.
These technologies can adjust the parameters of the shock waveform to match the transthoracic
impedance of the patient. Biphasic technology increases the duration of current flow for patients with high
impedance. When escalating energy, for example 150J to 180J, it delivers the electrical energy with higher
voltage level if the patient's impedance does not vary.
9
Rescue Life – Instruction For Use
6-2
Rev.0.5 – 30/03/2022