title: Serial plasma concentrations of atrial natriuretic peptide, plasma renin activity, aldosterone, and antidiuretic hormone in neonates on extracorporeal membrane oxygenation.
abstract: To obtain information on water and salt regulating hormones and volume homeostasis during neonatal extracorporeal membrane oxygenation (ECMO), serial determinations of atrial natriuretic peptide (ANP), plasma renin activity (PRA), aldosterone (Aldo), antidiuretic hormone (ADH), colloid-osmotic pressure (COP), osmolality (Osmol), and central venous pressure (CVP) before, during, and after neonatal ECMO in 10 neonates with meconium aspiration syndrome (MAS) were carried out. Mean gestational ages and birth weights were 41(+3) weeks (39(+6) - 42(+4)) and 4,063 gm (3,500-4700), respectively; mean age at start and duration of ECMO 29.3 (14-69) and 152.6 hr (92-267), respectively. Plasma ANP (mean +/- SD) was 67.8+/-69.1 pmol/L before, decreased to 33.3+/-22.1 (not significant) pmol/L during, and significantly increased to 274.6+/-131.8 pmol/L after ECMO (p < 0.05). ANP correlated positively with CVP (r = 0.63; p < 0.001). Pre-ECMO PRA, Aldo, and ADH were comparable to those described earlier in normal neonates, decreased during (p < 0.001 for Aldo; p < 0.05 for PRA and ADH) and either remained elevated (PRA, p < 0.001; Aldo, p < 0.05) or decreased (ADH) after ECMO. COP and Osmol remained unchanged. Neonatal ECMO for MAS is characterized by circulatory and osmotic equilibrium. It is suggested that circulating volume contracts during and expands after neonatal ECMO for MAS.
authors.affiliation: Department of Neonatology, University of Nijmegen, The Netherlands.
authors.forename: Ben A
authors.initials: BA
authors.lastname: Semmekrot
authors.forename: Gerard J
authors.initials: GJ
authors.lastname: Pesman
authors.forename: Paul N
authors.initials: PN
authors.lastname: Span
authors.forename: C G J
authors.initials: CG
authors.lastname: Sweep
authors.forename: Arno F J
authors.initials: AF
authors.lastname: van Heijst
authors.forename: Leo A H
authors.initials: LA
authors.lastname: Monnens
authors.forename: Margot
authors.initials: M
authors.lastname: van de Bor
authors.forename: Ronald B
authors.initials: RB
authors.lastname: Tanke
authors.forename: Frans H J M
authors.initials: FH
authors.lastname: van der Staak
mesh_terms: D000450:Aldosterone / Q000097:blood*; D009320:Atrial Natriuretic Factor / Q000097:blood*; D001794:Blood Pressure; D002496:Central Venous Pressure; D004573:Electrolytes / Q000097:blood / Q000652:urine; D015199:Extracorporeal Membrane Oxygenation; D006339:Heart Rate; D006801:Humans; D007231:Infant, Newborn; D009994:Osmolar Concentration; D009997:Osmotic Pressure; D012083:Renin / Q000097:blood*; D012709:Serum Albumin; D014556:Urine; D014667:Vasopressins / Q000097:blood*
chemical_list: D004573:Electrolytes; D012709:Serum Albumin; D014667:Vasopressins; D000450:Aldosterone; D009320:Atrial Natriuretic Factor; D012083:Renin