3.4. Alert conditions

The device is programmed to automatically detect alert conditions.

  • Alert conditions are predefined in the implantable device.
  • Regardless of the remote ON/OFF setting, the device will record detected alerts and a message will be displayed in the Warning section of the patient report.
  • When alert conditions are met and remote transmission is authorized, the patient report containing the alert will be transmitted during the following evening. Authorization of remote transmissions is granted in the MicroPort programmer.

The defibrillator should be replaced as soon as the Recommended Replacement Time (RRT)* point is reached.
*: corresponds to the previously used Elective Replacement Indicator (ERI).

The alert conditions are categorized as follows:

C T Alert description
RED Critical alert Battery Depletion – RRT

Device Reset

Excessive Charge time

System Integrity (System integrity includes several technical alerts, all to be analyzed by MicroPort experts.)

Lead Parameters Evaluation (LPE)

Abnormal RV lead impedance

Abnormal A lead impedance*

Abnormal LV lead impedance**

High RV Autothreshold †

RV threshold over max tested amplitude†

High A Autothreshold*†

A threshold over max tested amplitude*†

High LV Autothreshold (distinct settings for MP1 / MP2 in 4LV model with Multipacing enabled)**†

LV threshold over max tested amplitude (distinct settings for MP1 / MP2 in 4LV model with Multipacing enabled)**†

Abnormal RV coil continuity

Abnormal SVC coil continuity

Abnormal shock impedance

Shocks disabled

Inefficient Max Shock delivered (when shock delivered is enabled)

YELLOW Significant alert Shock delivered (except Inefficient Max shock delivered which is considered as critical)

ATP delivered

Ventricular oversensing

Limited percentage of Ventricular pacing in CRT**

High AT/AF burden*

Fast Ventricular rate during AT/AF*

Asynchronous mode

MRI notification

* CRT-D and DR models only

** CRT-D models only

† Devices with Autothreshold feature only