Sinus rhythm is the name given. A sinus rhythm is any cardiac rhythm in which depolarisation of the cardiac muscle begins at the sinus node. It is characterised by the presence of correctly oriented P waves on the electrocardiogram. Sinus rhythm is necessary, but not sufficient. Sinus rhythm refers to the rhythm of your heart beat, determined by the sinus node of your heart. The sinus node creates an electrical pulse that travels. A sinus rhythm is any cardiac rhythm in which depolarisation of the cardiac muscle begins at the sinus node. It is characterised by the presence of correctly. Your heart's job is to pump blood throughout your body. When it's working the way it should, it pumps to a regular, steady beat. Sinus arrhythmias are abnormal heart rhythms that start at the sinus node. They commonly cause irregular heartbeats in children. Sinus arrhythmia is defined as an irregular rhythm with greater than 10% variation in the P–P interval, a normal P wave for every QRS complex, and a fairly. Normal sinus rhythm (NSR) is the rhythm that originates from the sinus node and describes the characteristic rhythm of the healthy human. Overview of normal sinus rhythm (NSR) · The default heart rhythm · Pacemaking impulses arise from the sino-atrial node and are transmitted to the. The heart's rhythm is referred to as “sinus rhythm” because the electrical impulse is generated in the sinus node. A normal sinus rhythm is one.