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Am J Perinatol 2019; 36(06): 594-599
DOI: 10.1055/s-0038-1670691
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Prenatal Prediction of Difficult Intubation in Periviable Neonates Using Standard Fetal Biometric Parameters

Authors

  • Tara A. Lynch

    1   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York

  • J. Christopher Glantz

    1   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York

  • Kathryn Drennan

    1   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York
Further Information

Publication History

29 May 2018

09 August 2018

Publication Date:
19 September 2018 (online)

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Abstract

Objective To assess whether standard fetal biometric parameters can be used to predict difficult intubations in periviable neonates undergoing resuscitation.

Study Design This is a retrospective case–control study of periviable neonates delivered at 23 to 256/7 weeks at an academic hospital during a 5-year period in whom intubation was attempted. Standard fetal biometric measurements were included if they were taken within 7 days of delivery. Primary outcome was intubation in one attempt and was compared with more than one attempt. Data were also collected for fetal gestational age at delivery, neonatal birth weight, estimated fetal weight, head circumference, biparietal diameter, and abdominal circumference. Parametric and nonparametric statistical tests used p < 0.05 as significant.

Results In total, 93 neonates met the inclusion criteria. The mean estimated fetal weight was 675 g (standard deviation [SD] ± 140), and the mean neonatal birth weight was 706 g (SD ± 151). The median interval between fetal ultrasound and delivery was 3 days (range: 0–7 days). A total of 45 neonates (48.3%) required more than one intubation attempt. The median number of intubation attempts was 1 (range: 1–10). There was no association between intubation difficulty and fetal abdominal circumference, biparietal diameter, head circumference, gestational age, estimated fetal weight, and neonatal birth weight (all p > 0.05).

Conclusion Standard biometry in periviable neonates does not predict intubation difficulty.

Keywords

periviable - intubation - preterm birth - biometry

Authors' Contributions

Dr. Tara A. Lynch and Dr. Kathryn Drennan contributed to design, planning, conduct, data analysis, and manuscript writing. Dr. J. Christopher Glantz contributed to data analysis and manuscript writing.


 

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