NEJM Journal Watch - General Medicine

In patients with an ICD and plasma potassium ≤4.3 mmol/L, boosting the level to 4.5–5.0 mmol/L reduced the risk for ventricular arrhythmias.

Lithium, in the blood-concentration therapeutic range, is associated with excess risk for developing stage ≥3 CKD.

In two large studies, lamotrigine and levetiracetam had similar risk. It's time to reconsider lamotrigine's warning label.

The recombinant zoster vaccine was effective among Medicare beneficiaries regardless of prior vaccination status.