Match the Column-I with Column-II Column-I (a) P - wave (b) QRS complex (c) T - wave (d) Reduction in the size of T-wave Column-II (i) Depolarisation of ventricles (ii) Repolarisation of ventricles (iii) Coronary ischemia (iv) Depolarisation of atria (v) Repolarisation of atria
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
(a)-(iv), (b)-(i), (c)-(ii), (d)-(v)
(a)-(ii), (b)-(i), (c)-(v), (d)-(iii)
(a)-(ii), (b)-(iii), (c)-(v), (d)-(iv)
In ECG P-wave represents depolarisation of atria. QRS complex represents depolarisation of ventricles. T-wave represents repolarisation of ventricle i.e. return from excited to normal state. Reduction in the size of T-wave i.e. if the T-wave represents insufficient supply of oxygen i.e. coronary ischaemia.
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