ERI
Also written as: ERI — Elective Replacement Indicator
Elective replacement indicator signaling that a cardiac device battery requires replacement within 3-6 months.
Full Definition
ERI (Elective Replacement Indicator) represents a programmed device alert that activates when battery voltage decreases to predetermined levels, typically indicating 3-6 months of remaining device longevity under normal operating conditions. When ERI status is reached, devices may alter their behavior by switching to simplified pacing modes, reducing output voltage, or modifying telemetry functions to conserve battery power. This alert system allows planned, non-urgent device replacement before end-of-life (EOL) status is reached, which would represent imminent battery depletion requiring urgent intervention. ERI timing varies by manufacturer and device type, with ICDs typically having shorter windows due to higher energy requirements for shock therapy.
Usage
Usage note: Distinguish from EOL (end-of-life) status; specify estimated remaining battery life when available.
In Context
- "The pacemaker reached ERI status with an estimated 4 months of battery life remaining." — Device clinic alert notification
- "ERI activation triggered automatic scheduling for elective generator replacement surgery." — Device follow-up care plan