Sinus rhythm electrocardiographic axis left deviation what does it mean

Sinus rhythm ECG axis left deviation usually refers to the heart beat originated from the sinus node rhythm, ECG shows the ECG axis to the left.

Under normal circumstances, the ECG axis between-30-+90 degrees, if the ECG axis to the left deviation, generally suggests that the heart's electrical activity is mainly conducted from the left side of the heart, may be related to left ventricular hypertrophy, coronary atherosclerotic heart disease, acute myocardial infarction and other reasons. Sinus rhythm ECG axis left deviation performance can not determine specific heart disease, patients should also be further examined to determine the condition of heart disease.