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Atrial natriuretic peptide: a vasodilator of the fetoplacental circulation?

Abstract：

:Paired maternal and fetal atrial natriuretic peptide concentrations were measured in 62 percutaneous umbilical blood samplings performed principally for the assessment and treatment of rhesus isoimmunization. Pretransfusion fetal atrial natriuretic peptide levels were significantly higher than maternal atrial natriuretic peptide levels (median 117 pg/ml vs median 32 pg/ml; p less than 0.001); paired pretransfusion fetal and maternal atrial natriuretic peptide samples showed a weak correlation with each other (R2 = 17%; p = 0.002). Fetal atrial natriuretic peptide levels correlated inversely with hematocrit (R2 = 14%; p = 0.003), but not with albumin or gestational age. Paired pretransfusion and posttransfusion (median = 134 pg/ml) fetal atrial natriuretic peptide levels (n = 38) showed a significant rise after transfusion (p less than 0.001); this rise was related to the percentage of fetoplacental blood volume transfused (R2 = 33%; p = 0.035). In a subgroup of 26 procedures, change in fetal atrial natriuretic peptide levels was weakly correlated with transient reductions in the Doppler systolic/diastolic ratio of the umbilical artery (R2 = 14%; p = 0.07). These data support work in animals that indicate a role for atrial natriuretic peptide in the human fetus, but these data do not confirm that atrial natriuretic peptide modulates fetoplacental vascular impedance in the human fetus.

journal_name

Am J Obstet Gynecol

journal_title

American journal of obstetrics and gynecology

authors

Kingdom JC,Ryan G,Whittle MJ,McNay MB,Bowman AW,Doyle J,Connell JM

doi

10.1016/0002-9378(91)90419-r

subject

Has Abstract

pub_date

1991-10-01 00:00:00

pages

791-800

issue

4 Pt 1

eissn

0002-9378

issn

1097-6868

pii

0002-9378(91)90419-R

journal_volume

165

pub_type

杂志文章

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