3. Your artificial valve patient from a previous homework complains of a perceiv

Question

3. Your artificial valve patient from a previous homework complains of a perceived heart beat irregularity, particularly when stressed. You perform an ECG, and observe the following waveform: a) What do you think is happening? Identify the normal and abnormal components of his ECG, and explain what could cause the abnormal component looks the way it does. b) Speculate on possible origin of the arrhythmia. Could this be directly or indirectly related to your valve implant? If so, how? If not, why not?

Explanation / Answer

a. During stress, when ECG is taken, we find irregular waves A stress echo can accurately visualize the motion of walls of heart and pumping action when heart is stressed.In this it may reveal a lack of blood flow which is not always apparent in heart tests.

Reversible regional wall motion abnormalities are found in stress ECG which indicate myocardial ischemia and lasts until heart rate drops from maximum. J point depression during stress ECG may be normal at some conditions.

b. The major findings are ST segment deviations which lead to development of sustained arrhythmias. Ventricular arrhythmias during stress are commonly associated with ST elevations.

It is directly related to implant valve. The implanted loop recorder is used for continuous heart rhythm surveillance and determines its impacts on therapy.

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