Document Detail

Selection of delivery method in pregnancies complicated by autoimmune thrombocytopenia: a decision analysis.
MedLine Citation:
PMID:  10389715     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare three common strategies for selecting delivery methods in term pregnancies complicated by immune thrombocytopenia by contrasting their effects on the number of severely thrombocytopenic neonates delivered vaginally and total cesarean rates. METHODS: We used decision analysis to compare three strategies to select delivery method in women with autoimmune thrombocytopenia, funipuncture at term, intrapartum fetal scalp platelet sampling with delivery mode decisions based on platelet count in the first two strategies, and no testing of fetal platelets with delivery mode determined by standard obstetric criteria. We assumed that the goal of each strategy was to minimize the number of severely thrombocytopenic neonates delivered vaginally while maintaining an acceptable cesarean rate. Severe thrombocytopenia was defined as under 50,000 platelets per microL. Probabilities with ranges (used in sensitivity analyses) were derived from the medical literature. RESULTS: Of the two testing strategies, funipuncture was clearly preferable. Funipuncture resulted in zero cases of severely thrombocytopenic neonates delivered vaginally (as did scalp sampling), with a lower overall cesarean rate compared with fetal scalp sampling (36.6% versus 69.1%). Compared with the no-testing strategy, the funipuncture strategy reduced the number of severely thrombocytopenic neonates delivered vaginally (0 versus 82 per 1000) with a modest increase in the cesarean rate (1.9 cesareans to prevent vaginal delivery of one severely thrombocytopenic neonate). CONCLUSION: Fetal scalp sampling should be abandoned in favor of funipuncture when testing for thrombocytopenia.
D M Stamilio; G A Macones
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  94     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  1999 Jul 
Date Detail:
Created Date:  1999-07-28     Completed Date:  1999-07-28     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  41-7     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology and the Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania Health System, Philadelphia 19104, USA.
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MeSH Terms
Autoimmune Diseases / diagnosis,  prevention & control*
Cesarean Section*
Decision Support Techniques*
Fetal Diseases / diagnosis
Infant, Newborn
Infant, Newborn, Diseases / prevention & control*
Pregnancy Complications, Hematologic*
Prenatal Diagnosis
Sensitivity and Specificity
Thrombocytopenia / diagnosis,  prevention & control*
Comment In:
Obstet Gynecol. 1999 Oct;94(4):639-40   [PMID:  10511377 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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