Hyponatremia and brain injury: absence of alterations of serum brain natriuretic peptide and vasopressin

Arquivos de Neuro-Psiquiatria

Karina Nascimento Costa¹  Helen Mayumi Nakamura¹  Leonardo Rodrigues Da Cruz¹  Lucas Sampaio Valente Fernandes De Miranda¹  Rubens Carneiro Dos Santos-neto¹  Susyanne De Lavor Cosme¹  Luiz Augusto Casulari¹ 

[1] ,Hospital de Base do Distrito Federal Intensive Care Unit Brasília DF ,Brazil

关键词: hyponatremia;    brain injury;    natriuretic peptide;    aldosterone;    vasopressin;    hiponatremia;    traumatismo cranioencefálico;    peptídeo natriurético;    aldosterona;    vasopressina;   

DOI  :  10.1590/S0004-282X2009000600014

来源: SciELO

【 摘 要 】

OBJECTIVE: To study any possible relation between hyponatremia following brain injury and the presence of cerebral salt-wasting syndrome (CSWS) or the syndrome of inappropriate secretion of antidiuretic hormone (SIADH), and if vasopressin, brain natriuretic peptide (BNP) and aldosterone have a role in its mechanism. METHOD: Patients with brain injury admitted to the intensive care unit were included and had their BNP, aldosterone and vasopressin levels dosed on day 7. RESULTS: Twenty six adult patients were included in the study. Nine (34.6%) had hyponatremia and presented with a negative water balance and higher values of urinary sodium, serum potassium and diuresis than patients with normonatremia. The serum levels of BNP, aldosterone, and vasopressin were normal and no relation was observed between plasma sodium and BNP, aldosterone or vasopressin. CONCLUSION: The most likely cause of hyponatremia was CSWS and there was no correlation between BNP, aldosterone and vasopressin with serum sodium level.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License