N-terminal pro-B-type natriuretic peptide with fractional excretion and clearance of sodium in relation to cardiovascular events after elective cervical spine surgery.
OBJECTIVES: N-terminal pro-B-type natriuretic peptide (NT-proBNP) is increasingly being used as a biomarker of cardiovascular risk. To date neither its cut-off for postoperative period in noncardiac surgery nor whether the cardiovascular risk has any relation to natriuresis has been assessed.
DESIGN: The prospect.....