Zoll medical corporation evaluated the device and the device performed to specification.The device was recertified and returned to the customer.The g5 device is available in both fully automatic and semi automatic models.In both models, the device will prompt the user through visual and audible clues.Both units will guide the user through the assessment of the patient and the placement of the pads, will analyze the patient, and instruct the user to "stand clear" during the analysis and to shock if necessary.If the g5 automatic model determines a shock is necessary, an audible countdown begins.During the countdown, the user is warned to "stand back" and the shock is delivered when the countdown is completed.The device will then prompt "shock delivered" and advises when it is safe to start performing cpr.In comparison, the semi-automatic device upon determining a shockable rhythm has been detected will flash the shock button red.The shock is then delivered when the user actuates the shock button.After review of the settings of this device, the voice prompt volume was found to be set on low.This is not the default setting of the device and this setting may have contributed to the user possibly not hearing the appropriate warning prompts from the device.This report has been attributed to usability since the user did not follow or acknowledge the prompts from the device.Analysis of reports of this type has not identified an increase in trend.
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