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1.
Anaesthesia ; 45(4): 343, 1990 Apr.
Article in English | MEDLINE | ID: mdl-2337226
2.
Clin Endocrinol (Oxf) ; 24(1): 89-96, 1986 Jan.
Article in English | MEDLINE | ID: mdl-3519005

ABSTRACT

Hormonal and cardiovascular responses to 1-desamino-8-D-arginine vasopressin (DDAVP) were investigated in six normal adult volunteers. After overnight fluid deprivation, an intravenous injection of either DDAVP (0.4 microgram/kg) or the same volume of normal saline was administered. One hour later an intravenous infusion of hypertonic saline was commenced and continued over two hours. Five minutes following the DDAVP injection, facial flushing, a fall in diastolic blood pressure by an average of 13% and a rise in pulse rate by an average of 18% were observed. There was a significant increase in plasma renin activity and plasma cortisol concentration, but no significant changes were observed in plasma concentrations of LH, FSH, TSH, prolactin or GH. Following osmotic stimulation by hypertonic saline plasma AVP rose to the same extent in both the DDAVP and control studies. DDAVP (0.4 microgram/kg) was also administered to five subjects with cranial diabetes insipidus. Again facial flushing, increased facial temperature, a fall in diastolic pressure and a rise in heart rate were all observed, suggesting that DDAVP exerts its cardiovascular actions by a mechanism other than antagonism of circulating endogenous AVP.


Subject(s)
Cardiovascular System/drug effects , Deamino Arginine Vasopressin/pharmacology , Hydrocortisone/blood , Renin/blood , Adult , Arginine Vasopressin/blood , Blood Pressure/drug effects , Diabetes Insipidus/blood , Flushing/etiology , Humans , Male , Osmolar Concentration , Pituitary Hormones, Anterior/blood , Pulse/drug effects , Water Deprivation
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