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Improved First Dose Conversion of Supraventricular Tachycardia Using Weight-Based Adenosine.
Curēus 2023 March
Introduction Paroxysmal supraventricular tachycardia (PSVT) is an often-recurring tachyarrhythmia that frequently results in emergency department visits and is commonly treated using intravenous adenosine. Given the anecdotal variable success of adenosine, the question arose of which patient factors may affect its success. This retrospective cohort analysis seeks to test the hypothesis that adult patients who receive adenosine at doses of ≥0.1mg/kg will have greater rates of successful conversion upon receipt of the first dose of adenosine. Methods This retrospective cohort analysis examines the charts from patients with known paroxysmal supraventricular tachycardia from November 1, 2015, through March 31, 2020, who were treated with intravenous adenosine. The primary outcome was the first-dose success of adenosine when stratified by patient weight (greater than 0.1mg/kg or less than 0.1mg/kg). Baseline characteristics and adverse effects were also collected. Results Seventy-six patients were included in the analysis. Patients who received adenosine at doses greater than or equal to 0.1mg/kg were more likely to convert to sinus rhythm than those who received doses less than 0.1mg/kg (p=0.006). No difference in adverse effects was noted between the groups (p=0.75). Conclusion This retrospective cohort analysis found that patients who received adenosine at doses greater than or equal to 0.1mg/kg for the treatment of PSVT were more likely to convert to sinus rhythm than those who received lower doses, with no difference in adverse effects. This hypothesis-generating finding provides the basis for a subsequent randomized, controlled trial to investigate the effectiveness and safety of weight-based adenosine.
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