A comparison between amniotic fluid index and the single deepest vertical pocket technique in predicting adverse outcome in prolonged pregnancy

Paolo Rosati, Lorenzo Guariglia, Anna Franca Cavaliere, Silvia Buongiorno, Andrea Ciardulli, Ilenia Mappa, Paola Ciliberti, Stefano Cianci, Salvatore Giovanni Vitale, Pietro Cignini

Risultato della ricerca: Contributo in rivistaArticolo in rivista

Abstract

OBJECTIVE: to compare perinatal outcome in induced postterm pregnancies with normal amniotic volume and in patients with prolonged pregnancy undergone induction for oligohydramnios, evaluated by two different ultrasonographic methods. METHODS: amniotic fluid volume was measured, using Single Deepest Vertical Pocket (SDVP) and Amniotic Fluid Index (AFI), in 961 singleton uncomplicated prolonged pregnancies. In 109 of these patients, hospitalization was planned for induction of labor, during or after 42 weeks of gestation, for oligohydramnios, postterm pregnancy and other indications in 47, 51 and 11 cases, respectively. Perinatal outcome included: rate of caesarean section, fetal distress, non reassuring fetal heart tracing, presence of meconium, umbilical artery pH < 7.1, Apgar score at 5 minutes < 7, admission to neonatal intensive care unit (NICU). RESULTS: oligohydramnios was diagnosed in 4.89% of cases, when at least one of the two methods was used. A reduced AFI and SDVP value identified 4.47% and 3.75% of cases, respectively, even if without statistical difference. No statistical differences were reported in perinatal outcomes in postterm versus prolonged pregnancies with oligohydramnios, also in relation to the two different ultrasonographic methods. CONCLUSIONS: oligohydramnios is more frequently diagnosed using AFI than SDVP, consequently determining a higher rate of induction of labor. Moreover, perinatal outcome in prolonged induced pregnancies is not affected by oligohydramnios.
Lingua originaleEnglish
pagine (da-a)12-15
Numero di pagine4
RivistaJOURNAL OF PRENATAL MEDICINE
Volume9
DOI
Stato di pubblicazionePubblicato - 2015

Keywords

  • amniotic fluid index
  • post-term pregnancy
  • prolonged pregnancy
  • single deepest vertical pocket

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