ECG / Exercise Stress test

By placing 12 electrodes on arms, legs and chest much information is gathered about the functioning of the heart, particularly rhythm disturbances.

Also, oxygen deficiency of the heart muscle may show characteristic abnormalities.

Even if an ECG was never made in the past??, it is desirable to have one for future reference.

The example below shows a normal ECG:


The ECG may change during exercise. Oxygen deprivation may become more apparent, abnormal rhythm may show up. In our practice, the exercise test is carried out with the aid of an ergometric bicycle. The exercise test is monitored with blood pressure control and cardiac monitoring by the ECG. TheĀ  start is with a low resistance (50 watts). Every minute the resistance increases until the maximum performance is achieved. It is also possible, that the test needs to be discontinued, because the blood pressure or heart rate becomes too high. Some people experience chest pain or pain in the calves / upper legs (claudication), reason for the test to be discontinued.

The ECG in rest is compared to the ECG at the time of maximal effort. It may reveal circulatory disorders of the coronary arteries.

In patients suffering from heart disease and who are also treated for these symptoms in our clinic, we can use these test results to recorded objective improvements of our treatment.



The upper figure shows a normal ECG. All waves move up and down around the horizontal line.

The lower figure shows an ECG during oxygen deprivation (ischaemia). Some waves stay below the reference horizontal line, which is a sign for lack of coronary oxygen.