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Biomedical subjects

A Khoór

Publications and source records attributed to A Khoór.

6 recordsLinked to original sources
PubMed1990

Changes in plasma concentrations of atrial natriuretic peptide during exchange transfusion in premature infants.

Plasma concentrations of atrial natriuretic peptide (ANP) and hemodynamic parameters were investigated in five premature infants undergoing exchange transfusion. Baseline values of ANP were 51.7 +/- 21.2 fmol/ml. Volume depletion by withdrawal of 10 ml blood did not cause changes in systolic blood pressure (79.4 +/- 4.3 vs. 71.4 +/- 5.6 mmHg) and heart rate (115 +/- 5.2 vs. 115 +/- 2.4 b/min). ANP levels in plasma remained unaltered (53.4 +/- 24.9 fmol/ml). Replacement of 10 ml blood increased central venous pressure by 33% and ANP concentration in the plasma by nearly 30%, while heart rate and blood pressure remained unchanged. Our data indicate that the heart of the premature infant responded to acute blood replacement with increased ANP-release, while blood removal appeared not to influence hormone regulation.

Atrial Natriuretic Factor↗
PubMed1990

Atrial natriuretic peptide, volume and blood pressure regulation during exchange transfusion of the neonates.

Plasma concentrations of atrial natriuretic peptide (ANP) and hemodynamic parameters were investigated in five premature infants undergoing exchange transfusion. Baseline values of ANP were elevated being 51.7 +/- 21.2 fmol/ml. Volume depletion by withdrawal of 10 ml blood did not cause changes in systolic blood pressure (79.4 +/- 4.3 vs 71.4 +/- 5.6 mmHg) and heart rate (115 +/- 5.2 vs 115 +/- 2.4 l/min). ANP levels in plasma remained unaltered (53.4 +/- 24.9 fmol/ml). Volume load of 10 ml blood transfusion increased central venous pressure by 33 per cent and ANP concentration in the plasma nearly by 30 per cent, while heart rate and blood pressure remained unchanged. Our data indicated that the heart of premature infant responds to acute volume load by increased ANP-release, while volume depletion seems not to influence hormone regulation.

Atrial Natriuretic Factor↗
PubMed1990

Cerebrospinal fluid concentrations of atrial natriuretic peptide in children.

Concentrations of atrial natriuretic peptide (ANP) in plasma and in cerebrospinal fluid (CSF) were measured in preterm neonates, in infants and in children with hydrocephalus. Plasma ANP in preterm neonates were elevated compared to infants and children with hydrocephalus. CSF-ANP in all groups were lower than plasma levels. ANP concentrations in the liquor exhibited higher values in children with hydrocephalus. No correlation was found between plasma and CSF-ANP levels while CSF-pressure and ANP concentration in the liquor correlated positively. Our data provide evidence for the existence of a cerebral ANP system in humans. The CSF-ANP system seems to be independent from the systemic, atrial ANP. CSF-ANP may be of great importance in the regulation of water and ion content of central nervous system and probably liquor formation.

Atrial Natriuretic Factor↗
PubMed1986

[Hepatoblastoma].

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Carcinoma, Hepatocellular↗