Natriuresis
Hyponatremia and natriuresis were present in most patients after neurosurgery; however, the atrial natriuretic peptide cannot be considered to be directly responsible for these alterations in neurosurgery patients. Other natriuretic factors are likely to be involved 1).
1)
Gasparotto AP, Falcão AL, Kosour C, Araújo S, Cintra EA, Oliveira RA, Martins
LC, Dragosavac D. Atrial natriuretic factor: is it responsible for hyponatremia
and natriuresis in neurosurgery? Rev Bras Ter Intensiva. 2016 Jun;28(2):154-160.
English, Portuguese. PubMed PMID: 27410411.