I have just phoned the hospital and in the following week or two I should be able to shadow the cardiographer throughout his day in the cardio respiratory department. Although I have been to this department before it was essentially a tour of the machines and I had the opportunity to take photographs of the cables and wires as they lay.
This shadowing exercise will give me an insight into the actual processes and stresses the cardiographer encounters during the day especially in relation to tangled cables and wires.