Source:http://linkedlifedata.com/resource/umls/id/C0039239
MSH: 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.,NCI: A heart rate of more than 100 beats per minute, with its origin in the sinus node. (NCI),NCI: A disorder characterized by a dysrhythmia with a heart rate greater than 100 beats per minute that originates in the sinus node.,NCI: A heart rate of more than 100 beats per minute, with its origin in the sinus node.