Key result
Metoprolol in hyperthyroidism is linked to lower T4, PRA, TRC, and active renin ratio.
Why the study?
Does metoprolol reduce plasma renin activity and renin concentrations in patients with hyperthyroidism?
Population
31 normal controls and 8 patients with hyperthyroidism (total n=39).
Comparison
Metoprolol 120 mg/day for 14 days vs Pretreatment values and normal controls
Design
Cohort
Follow-up
14 days
Authors
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Metoprolol was associated with reduced renin activity in hyperthyroidism; leaves open effects on outcomes or practice change.
Observational (n=39)
Does metoprolol reduce plasma renin activity and renin concentrations in patients with hyperthyroidism?
p-value: p=<0.05 to <0.01
Beta-1 adrenergic blockade with metoprolol significantly reduces plasma renin activity and total renin concentration in hyperthyroid patients, indicating sympathetic modulation of renin activation.
Baba et al. (1986) conducted an observational in Hyperthyroidism (n=39). Metoprolol vs. Pretreatment values was evaluated on Levels of T4, PRA, TRC, and active renin ratio (PRC/TRC) (p=<0.05 to <0.01). Metoprolol administration (120 mg/day for 14 days) in hyperthyroid patients significantly reduced levels of T4, PRA, TRC (P<0.05 to P<0.01), and the active renin ratio (P<0.025).
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