Primary hyperaldosteronism presenting as persistent postpartum hypertension: Illustrative case and systematic review.

We present a case of persistent postpartum hypertension found to be secondary to primary hyperaldosteronism in a woman with a history of recurrent hypertensive disorders of pregnancy and associated fetal complications. Our systematic review revealed only 18 cases of primary aldosteronism diagnosed in women with postpartum hypertension, suggesting that this disorder is under-studied in the postpartum period. A review of these cases suggests that women with primary hyperaldosteronism commonly present with hypertensive disorders of pregnancy, but may only be identified de novo postpartum. However, a high index of suspicion is needed to diagnose primary hyperaldosteronism in the postpartum period, guided by a woman's obstetric history.