Cardiac Science Powerheart G3 Plus AED

What is the STAR biphasic waveform in the Cardiac Science G3 Plus?

STAR stands for Self-Tracking Active Response. It is a biphasic truncated exponential waveform that automatically measures the patient's transthoracic impedance at the moment of shock delivery and adjusts the energy output to compensate. This means the G3 Plus delivers the therapeutically appropriate dose regardless of the patient's body size or electrode pad placement variability — a significant clinical advantage over fixed-energy defibrillators. Clinical data from over 584 patients demonstrated 100% sensitivity for ventricular tachyarrhythmia detection.

What is the difference between the automatic (9390A) and semi-automatic (9390E) versions?

In the fully automatic version (9390A), the AED analyzes the heart rhythm and delivers a shock without requiring the rescuer to press any button — the device manages the entire therapy sequence. In the semi-automatic version (9390E), the device analyzes the rhythm, determines that a shock is appropriate, and then prompts the rescuer to press the shock button to deliver therapy. Both versions use identical STAR biphasic waveform technology and deliver the same clinical outcomes; the difference is a matter of institutional preference and protocol.

How does the Rescue Ready self-test system work on the G3 Plus?

Rescue Ready technology automatically tests all mission-critical components — battery, hardware, software, and defibrillation pads — every day. A partial high-voltage charge of the capacitor electronics is performed weekly, and a full charge cycle is completed monthly. This ensures the AED's defibrillation capacitor remains calibrated and the device can deliver full therapy energy immediately when deployed. Audible and visual alerts notify facility managers if any component fails a self-test.

What is included in the Powerheart G3 Plus purchase from MED-TAC?

Each purchase includes: the Powerheart G3 Plus AED (7-year warranty), one 9146 battery (4-year full replacement warranty), two pairs of adult defibrillation pads (2-year warranty), a carrying case, Ready Kit, Quick Start Tool Kit, serial communications cable, and the FDA-required physician's prescription. This is a complete, ready-to-deploy package with no additional accessories required for immediate public-access deployment.

Can the Powerheart G3 Plus be used on pediatric patients?

Yes. The G3 Plus has pediatric capability via separate pediatric defibrillation pads. When pediatric pads are installed, the device delivers age-appropriate therapy at reduced energy levels with pediatric-specific prompts. For any facility where children are present — schools, recreation centers, family entertainment venues — the pediatric pad option is strongly recommended as a supplementary accessory. The G3 Plus pads are non-polarized, meaning they can be placed interchangeably on either position of the patient's chest.