ECG axis left deviation sinus rhythm what does it mean

Sinus rhythm refers to the rhythm formed by the normal excitation of the sinus node, which is the normal physiological rhythm of the heart. Left deviation of ECG axis is the phenomenon of left deviation of cardiac electrical axis, which may be related to physiological factors such as body type factors, age factors and pathological factors such as hypertension and hypertrophic cardiomyopathy. If the patient has chest tightness, palpitations and other discomfort symptoms, systematic examination is recommended to determine the cause and targeted treatment is taken.