Vasopressin, atrial natriuretic factor and renal water homeostasis in premature newborn infants with respiratory distress syndrome.
J Perinat Med
; 23(4): 307-14, 1995.
Article
en En
| MEDLINE
| ID: mdl-8537861
Arginine vasopressin (AVP), human atrial natriuretic peptide (hANP), and body fluid and electrolyte balance were examined during the first five days of life in eleven premature infants (birthweight 1610 +/- 240 g, gestation 30 +/- 1 weeks) receiving mechanical ventilation for respiratory distress syndrome (RDS). Plasma hANP and urine AVP concentrations were determined by radioimmunoassay on the first, third and fifth days. Arginine vasopressin urine levels remained constantly elevated during the study period (mean +/- SD 13.5 +/- 7.8 day 1, 12.0 +/- 9.9 day 3, 13.2 +/- 5.1 ng/l day 5, p = n.s.), while plasma hANP was significantly increased on the third day (626 +/- 495 vs. 298 +/- 240 pg/ml on day 1, p < .05). Urine sodium concentration, urine osmolality and osmolality and osmolar clearance were elevated significantly as well on day 3, p < .05, and correlated to hANP levels. Body weight decreased during the study by 8.2% on the third day and by 11.3% of birthweight on the fifth day. A significant increase in creatinine clearance occurred after the third day (p < .01), while free water clearance remained essentially the same during the first five days of life. We speculate that an increase in plasma hANP concentration on day 3 of life results in a natriuresis and osmolar diuresis without correlations or temporal relationships to hypervasopressinemia of the premature neonate with RDS.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Síndrome de Dificultad Respiratoria del Recién Nacido
/
Arginina Vasopresina
/
Factor Natriurético Atrial
/
Diuresis
/
Enfermedades del Prematuro
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
Límite:
Humans
/
Newborn
Idioma:
En
Revista:
J Perinat Med
Año:
1995
Tipo del documento:
Article
País de afiliación:
Italia
Pais de publicación:
Alemania