Pharmacological norepinephrine transporter inhibition for the prevention of vasovagal syncope in young and adult subjects: A systematic review and meta-analysis.

Heart Rhythm : the Official Journal of the Heart Rhythm Society
Lucy LeiRobert S Sheldon

Abstract

Vasovagal syncope (VVS) significantly reduces quality of life, yet lacks effective medical therapies. Pharmacological norepinephrine transporter (NET) inhibition increases synaptic norepinephrine reuptake, which may be able to prevent hypotension, bradycardia, and syncope. The objective of this systematic review was to evaluate the ability of 3 NET inhibitors-reboxetine, sibutramine, and atomoxetine-to prevent head-up tilt-induced vasovagal outcomes in healthy participants and patients with VVS. Relevant studies were identified from Medical Literature Analysis and Retrieval System Online, Excerpta Medica Database, Cochrane Central Register of Controlled Trials, and Cumulative Index to Nursing and Allied Health Literature without language restriction from database inception to August 2019. All randomized controlled trials comparing the benefit of a NET inhibitor vs placebo in adult populations were selected for review and meta-analysis. Four studies (101 participants) met inclusion criteria. The mean study size was 25 (range 11-56) participants. NET inhibition reduced the likelihood of vasovagal reactions marked by hypotension and bradycardia in healthy participants during head-up tilt testing (relative risk 0.15; 95% confidence...Continue Reading

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Bradyarrhythmias are slow heart rates. Symptoms may include syncope, dizziness, fatigure, shortness of breath, and chest pains. Find the latest research on bradyarrhythmias here.

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