What's So Inappropriate About Sinus Tachycardia?

摘要

Sinus tachycardia is a physiological response to sympathetic activation and/or parasympathetic withdrawal. Exercise, anemia, dehydration, pulmonary embolus, fever, pericarditis, cardiac rupture, aortic insufficiency, acute mitral regurgitation, myocardial infarction, pulmonary edema, and pneumothorax are some autonomic triggers. Anxiety, pain, cocaine abuse, amphetamine ingestion, catecholamine infusions, anticholinergic drugs, tobacco, caffeine, alcohol, /?-blocker withdrawal, hyperthyroidism, and hypoglycemia are other explanations. Sinus tachycardia after catheter ablation of supraventricular tachycardia,1"6 with diabetes,7'8 or in the postural orthostatic tachycardia syndrome9-10 is explainable and may be appropriate