Sinus rhythm, what does counterclockwise transposition mean?

Normal heart is paced by sinoatrial node, so it is called sinus rhythm.

Clockwise transposition refers to the counterclockwise rotation of the heart along the long axis, which is mostly caused by left ventricular hypertrophy. However, normal people sometimes appear. So as long as it does not exceed 90 degrees, it has no practical significance in medicine.