MeSH definition : Simple rapid heartbeats caused by rapid discharge of impulses from the SINOATRIAL
NODE, usually between 100 and 180 beats/min in adults. It is characterized by a gradual
onset and termination. Sinus tachycardia is common in infants, young children, and
adults during strenuous physical activities.;
Simple rapid heartbeats caused by rapid discharge of impulses from the SINOATRIAL
NODE, usually between 100 and 180 beats/min in adults. It is characterized by a gradual
onset and termination. Sinus tachycardia is common in infants, young children, and
adults during strenuous physical activities.