J Korean Neurosurg Soc.  1991 Jun;20(6):437-441.

Changes of Atrial Natriuretic Peptide in Patients with Subarachnoid Hemorrhage

• Lee HS
• Lee JH
• Kim SH
• Kang SS
• Lee J

Abstract

Hyponatremia following the subarachnoid hemorrhage has been attributed to the syndrome of inappropriate secretion antidiuretic hormone or salt wasting syndrome. Recently discovered atrial natriuretic peptide(ANP) is known to contol sodium and extracellular fluid homeostasis by increasing renal excretion of sodium. To investigate whether the hyponatremia following the subarachnoid hemorrhage(SAH) is due to changes in plasma ANP, plasma ANP, serum sodium concentration and central venous pressure were measured in 10 patients(CSF ANP as well in some patients) with subarachnoid hemorrhage. The results obtained were as follows. 1) Plasma ANP concentration increased during the acute stage of SAH, being recovered to control levels after 8 days of SAH. 2) ANP concentration was significantly higher in plasma than in CSF. 3) No significant correlation was noted between the plasma ANP and CVP or serum sodium concentration. These results suggest that ANP is not involved in the development of hyponatremia during the acute stage of SAH.

Keyword

Subarachnoid hemorrhage; Atrial natriuretic peptide; Serum sodium concentration; Central venous pressure

MeSH Terms

Atrial Natriuretic Factor
Central Venous Pressure
Extracellular Fluid
Homeostasis
Humans
Hyponatremia
Plasma
Sodium
Subarachnoid Hemorrhage*
Wasting Syndrome
Atrial Natriuretic Factor
Sodium