Pregnancy restores altered sympathetic vasomotor modulation and parasympathetic cardiac modulation in hypertensive rats.

Hypertension is associated to impaired baroreflex sensitivity (BRS). In spontaneously hypertensive rats (SHR), pregnancy reduces blood pressure, and this effect has been associated to increase nitric oxide (NO) bioavailability. Increased NO bioavailability has been linked to improve BRS in hypertensive animals.