Hemodynamic effects of lysine-vasopressin in orthostatic hypotension.
Previous investigations have demonstrated that the postural stimulation of arginine vasopressin ( AVP) release is reduced in patients with Shy-Drager syndrome. We studied the effects of lypressin nasal spray on hemodynamic parameters in ten patients with chronic orthostatic hypotension. Heart rate, blood pressure, and stroke volume were measured at 0 degrees, 45 degrees and 70 degrees tilt before and one-half hour after two nasal sprays (four United States Pharmacopeia posterior pituitary pressor units, 7.4 micrograms) of lypressin. Lypressin did not significantly alter the effect of tilt on heart rate, stroke volume, and cardiac output but increased the blood pressure and total peripheral resistance. AVP analogues should be tested for treating chronic postural hypotension.[1]References
- Hemodynamic effects of lysine-vasopressin in orthostatic hypotension. Kochar, M.S. Am. J. Kidney Dis. (1985) [Pubmed]
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