Please can u tell me what is prehospital electrocardiogram is it a device in the ambulance or what ?

Before Hospital: My assumption would be that this could be any electrocardiogram that is done outside of the hospital. This could include at your doctor's office, at an urgent care center, or yes, even in an ambulance. An electrocardiogram is a type of reading generated by a machine that is connected to several electrode stickers on and around your chest to assess the heart rhythm, rate, and other measurements.

Yes, in ambulance: Prehospital electrocardiogram (ekg) is a tracing of the electrical activity of your heart. It is done by an ekg machine, and can easily be one done by paramedics, as they carry them on the ambulance. Very useful when someone may be giving heart complaints, for evaluating whether the person may be having a heart attack or some type of arrhythmia.