Sinus rhythm - also known as regular sinus rhythm (RSR) or normal sinus rhythm (NSR) - is the most common adult rhythm with rates between 60-100/minute. The QRS is most often narrow with upright P waves in Lead II.
Do not exceed the prescribed dose or take antiarrhythmic drugs without a doctor's prescription, as this increases the risk of adverse events, proarrhythmia, and stroke, raising mortality rates.
The use of antiarrhythmic drugs such as quinidine, disopyramide, propafenone, flecainide, metoprolol, amiodarone, dofetilide, dronedarone, and sotalol.
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