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in Psychology by (71.1k points)

Electrocardiological danger signs during incremental treadmill exercise include 

A. A heart rate equal to the maximal predicted for the person’s age. 

B. An R-R interval of about 500 milliseconds. 

C. R waves with an amplitude greater than one millivolt. 

D. Ventricular tachycardia. 

E. ST depression of one millimetre.

1 Answer

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Best answer

A. False It is normal to reach one’s predicted maximal heart rate. 

B. False This implies a heart rate of about 120 beats/minute, well within the normal range. 

C. False This is also a normal finding. 

D. True Stroke volume is impaired and ventricular fibrillation may develop. 

E. False Depression of 2–3 millimetres is the borderline level for danger.

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