Disease or Syndrome
sinus tachycardia
si·nus tach·y·car·di·a [ sahy-nuhs tak-i-kahr-dee-uh ]
Subclass of:
Supraventricular tachycardia
Definitions related to sinus tachycardia:
  • A disorder characterized by an electrocardiographic finding of abnormally rapid heart rate with its origin in the sinus node. Thresholds for different age, gender, and patient populations exist. (CDISC)
    NCI
    U.S. National Cancer Institute, 2021
  • Heart rate of greater than 100 beats per minute.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • (tachycardia, sinus) 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.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • A disorder characterized by a dysrhythmia with a heart rate greater than 100 beats per minute that originates in the sinus node.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.