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DIAGNOSTIC INVESTIGATIONS: ELECTROCARDIOGRAM - WHAT ARE THE DIFFERENT METHODS OF RECORDING EXERCISE ECG?

The simplest method in the physician's office is the two-step 'Master's stool' on which the patient climbs two steps up and two steps down repeatedly. The ECG is taken before and after the exercise and the tracings are compared to find any changes appearing after the exercise. The other method is Tricycle ergometry'. This bicycle is a stationary one of which only one wheel moves, the resistance of which can be increased or decreased by a system of gears. The work load is measured by the speed and resistance. The third method is the 'treadmill'. The patient stands on a moving platform, where he or she has to make a stationary run as the platform moves at various speeds and inclines. The work load is gradually increased by increasing the speed and the incline of the platform. The ECG changes, if any, appearing on a specific work load, are recorded and studied. The exercise ECG can be very useful in delecting ischaemic changes and abnormal rhythms of the heart appearing during and after exercise and not discoverable when the patient is at rest. Treatment can then be instituted at an early stage. Exercise ECG is also useful in eliciting response to therapy and to the programme of rehabilitation and exercise.

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Cardio & Blood