Sinus node Johnson Francis | July 6, 2008 | General | No Comments Sinus node Sinus node: Same as sino-atrial node or SA node; the normal pacemaker of the heart. Related Posts Difference between a heart attack and cardiac arrest No Comments | Feb 10, 2024 What is left ventricular aneurysm? No Comments | Apr 30, 2022 What is Hypokinesia of Heart Muscle? No Comments | Feb 11, 2024 What is Ebstein’s anomaly? No Comments | Apr 4, 2022 About The Author Johnson Francis Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal