Cardiac electrophysiology guy here. If you experience VT again, your ICD should detect it right away and try to do some specialized pacing to try to get you out of the Vtach. If it doesn’t work, it will shock you out of it. Unfortunately it’s unlikely that any fitness wearables would detect the arrhythmias before the ICD has delt with it, and even if you did catch it before the ICD, there’s not much you would be able to do anyways except wait for the shock. Most of these devices are programmed to check for afib (an irregular heartbeat) as opposed to VT (a regular very fast heartbeat) so unless it’s set to watch out for extreme heart rates, these watches can’t differentiate VT from normal rhythms.
Cardiac electrophysiology guy here. If you experience VT again, your ICD should detect it right away and try to do some specialized pacing to try to get you out of the Vtach. If it doesn’t work, it will shock you out of it. Unfortunately it’s unlikely that any fitness wearables would detect the arrhythmias before the ICD has delt with it, and even if you did catch it before the ICD, there’s not much you would be able to do anyways except wait for the shock. Most of these devices are programmed to check for afib (an irregular heartbeat) as opposed to VT (a regular very fast heartbeat) so unless it’s set to watch out for extreme heart rates, these watches can’t differentiate VT from normal rhythms.