Use of Amniostat-FLM in detecting the presence of phosphatidylglycerol in vaginal pool samples in preterm premature rupture of membranes.
OBJECTIVE
The presence of phosphatidylglycerol in amniotic fluid from the vaginal pool has been established as a reliable marker of pulmonary maturity in pregnancies complicated by preterm premature rupture of membranes because its presence is not affected by contaminants. This study was undertaken to determine the distribution of positive phosphatidylglycerol relative to gestational age from vaginal pool amniotic fluid samples and to assess the efficacy and accuracy of the Amniostat-FLM (Hana Biologics; Irvine Scientific after Sept. 14, 1989), an antibody agglutination method for rapidly detecting phosphatidylglycerol.


METHODS
All singleton nondiabetic pregnancies between 26 and 36 weeks with premature rupture of membranes from whom a vaginal pool sample was obtained were studied. The percent positive by gestational age was analyzed. The neonates that were delivered with a positive phosphatidylglycerol were evaluated for the presence of hyaline membrane disease and other immediate sequelae of prematurity.


RESULTS
Of the 201 vaginal pool amniotic fluid samples assayed for phosphatidylglycerol with the Amniostat-FLM procedure, 18% (36/201) were positive for phosphatidylglycerol and none of the delivered infants developed hyaline membrane disease.


CONCLUSIONS
The Amniostat-FLM seems to be accurate in predicting pulmonary maturity from vaginal pool samples.
Department of Obstetrics and Gynecology, UCI Medical Center, University of California, Irvine.
D F
DF
Lewis
C V
CV
Towers
C A
CA
Major
T
T
Asrat
M P
MP
Nageotte
R K
RK
Freeman
T J
TJ
Garite
D000372:Agglutination Tests; D000653:Amniotic Fluid / Q000737:chemistry*; D000911:Antibodies, Monoclonal; D005260:Female; D005322:Premature Rupture of Fetal Membranes; D005325:Fetal Organ Maturity; D005865:Gestational Age; D006801:Humans; D008168:Lung / Q000196:embryology*; D010715:Phosphatidylglycerols / Q000032:analysis*; D011247:Pregnancy; D011446:Prospective Studies; D011933:Reagent Kits, Diagnostic; D012189:Retrospective Studies; D014621:Vagina / Q000737:chemistry*
D000911:Antibodies, Monoclonal; D010715:Phosphatidylglycerols; D011933:Reagent Kits, Diagnostic