Using an ICD-9-CM code book, select the appropriate code(s) for the diagnostic statements given in the following questions

Paramedic intuition is BEST described as:

A) pattern recognition and matching based on past experience. B) the quick formulation of a field diagnosis based on assessment. C) the field diagnosis arrived at based on the general impression. D) instinct or a "gut feeling" based on past reading or studying.

The T wave, which indicates relaxation of the ventricles, is designated by the letter ________.