New Research Reveals How Low Sodium Disrupts the Heart's Electrical Rhythm

Sodium is an essential electrolyte that supports fluid balance, nerve signaling, muscle contraction, and heartbeat coordination; even small drops in blood sodium disrupt these essential functions A Virginia Tech study found that low blood sodium amplifies the effects of flecainide, a common rhythm-control drug, by disrupting key electrical support systems between heart cells Restoring sodium to the normal range reversed conduction delays. This confirms that the effects were due to a temporary sodium imbalance People on sodium channel blockers need to monitor sodium levels closely, as common triggers like diuretics or illness cause dangerous delays in heart signal conduction Most adults do well with around 3,500 milligrams of sodium daily, especially when it comes from unprocessed, mineral-rich sources balanced by adequate potassium intake

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