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Transient accelerations of fetal heart rate analyzed by computerized cardiotocography in the third trimester of pregnancy.
MedLine Citation:
PMID:  25004274     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Objective: the aim of this study was to investigate the patterns of transient FHR accelerations (10 bpm and 15 bpm) in the third trimester of pregnancy, comparing the occurrence of this event before and after the 32nd gestational week. Methods: This is a prospective study comparing the results of the computerized cardiotocography of 46 low-risk women with singleton pregnancies, maternal age between 18 and 40 years, gestational age between 28 and 40 weeks, absence of maternal morbidity and adequate fetal growth according to ultrasound. Computed Cardiotocography (8002 Sonicaid System and Fetal Care System) was performed for 30 minutes to analyze the variables of FHR. Results: twenty-three pregnant women underwent cardiotocography before 32 weeks (mean = 29.9 weeks, SD = 1.4 weeks) and were compared with 23 pregnant women who were examined after 32 weeks (mean = 36.3 weeks, SD = 2.5 weeks). Regarding the characteristics of FHR, fetuses evaluated between 32 1/7 weeks and 40 weeks showed a significantly greater number of accelerations above 15 bpm (median = 5, variation 0-18) than the group of pregnant women from 28 to 32 weeks (median = 4, variation 0 to 10; P = 0.048). There was a significant positive correlation between the number of accelerations above 15 bpm and the gestational age at examination (rho = 0.33; P = 0.026). Conclusion: computerized cardiotocography showed an association regarding the number of transient accelerations greater than 15 bpm in the assessment of both periods before and after 32 weeks of gestational age, suggesting the influence of the maturation of the fetal autonomic nervous system with pregnancy progression.
Authors:
Ana Luisa Fernandes Lauletta; Roseli Mieko Yamamoto Nomura; Seizo Miyadahira; Rossana Pulcineli Vieira Francisco; Marcelo Zugaib
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Revista da Associação Médica Brasileira (1992)     Volume:  60     ISSN:  0104-4230     ISO Abbreviation:  Rev Assoc Med Bras     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-07-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9308586     Medline TA:  Rev Assoc Med Bras     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  270-5     Citation Subset:  IM    
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