Studies on hypertension; mechanism of the fall in arterial pressure produced by high spinal anesthesia in patients with essential hypertension.
D000775:Anesthesia, Spinal; D001794:Blood Pressure; D001795:Blood Pressure Determination; D000075222:Essential Hypertension; D006801:Humans; D006973:Hypertension
ANESTHESIA/spinal; BLOOD PRESSURE, HIGH