ISSN 2398-2977      

Heart: sinus tachycardia

pequis

Introduction

  • Cause: a normal response of the sinus node to sympathetic stimulation.
  • Signs: a regular rhythm with a heart rate persistently above 60 bpm.
  • Diagnosis: ECG.
  • Treatment: depends upon inciting cause.
  • Prognosis: dependent on cause.

Pathogenesis

Etiology

Pathophysiology

  • Enhanced catecholamine release causing cardiac beta-adrenoreceptor stimulation and an acceleration in sinus node discharge rate.
  • Usually a normal response to physiological (exercise, stress) or pathological (pain, low cardiac output, hypovolemia, hypoxia) increase in metabolic demand.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

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