The medical implications of Taser use are independently assessed by the Scientific Advisory Committee on the Medical Implications of Less-Lethal weapons (SACMILL) SACMILL’s latest statement can be found at:
The police Authorised Professional Practice on Taser makes clear that before specially trained officers use Taser, there are a number of factors to be considered. These include whether there are any pre-existing medical conditions. The APP also states that all persons who have been subjected to the discharge of a Taser should be examined by a Forensic Medical Examiner (FME) as soon as practicable. Where officers believe that a person to whom a Taser has been applied has a cardiac pacemaker, other implanted device or pre-existing medical condition, an immediate referral should be made to hospital.
The guidance can be found at: https://www.app.college.police.uk/app-content/armed-policing/conducted-energy-devices-taser/