Anything that monitors like an ecg (Dublin)

Hi even looking for a lend if not giving away...if someone has an ecg machine or even a sport type equipment that can monitor heart rate continuously for my son who has a pacemaker that's acting up but where sent home from a&e yesterday with he's presenting well so someone will contact me Monday to bring him in to check what's wrong so just want to have evidence and also to keep an eye on him until he goes in