USE OF MEAN ARTERIAL PRESSURE (MAP-2) TO PREDICT PREGNANCY-INDUCED HYPERTENSION IN ADOLESCENTS

Authors

  • Lylaine Gavette CNM, MS,

    Corresponding author
      Maternity Care Services, Phoenix Memorial Hospital, 1201 S. 7th Avenue, Phoenix, AZ 85036.
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    • Lylaine Gavette, CNM, MS, is a certified nurse-midwife at the Birthing Center in Phoenix Memorial Hospital, Phoenix, Arizona. She completed her MS in Parent—Child Nursing and nurse-midwifery education at the University of Colorado Health Sciences Center.

  • Joyce Roberts CNM, PhD, FAAN

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    • Joyce Roberts, CNM, PhD, FAAN, is Director of the Graduate Nurse-Midwifery Program at the University of Colorado Health Sciences Center. She completed her MS in Maternal-Newborn Nursing and Nurse-Midwifery at the University of Utah, and her PhD at the University of Illinois-Chicago.


Maternity Care Services, Phoenix Memorial Hospital, 1201 S. 7th Avenue, Phoenix, AZ 85036.

ABSTRACT

Second trimester mean arterial pressure (MAP-2) has been studied as a means to predict potential for development of pregnancy-induced hypertension (PIH). Parameters of predictability have been suggested, tested, and found valuable in adult populations. Although pregnant adolescents are acknowledged to be at greatest risk for PIH, standards have been neither proposed nor tested in this group.

This study was developed as follow-up to a 1985 case study analysis by Novak, Roberts, and Holm19 which compares MAP-2 values of normotensive and hypertensive adolescents. Using retrospective chart review, data were gathered from 84 nulliparous adolescents, 27 of whom developed PIH and 57 who did not. MAP-2 values proved significantly higher for the group with PIH (M = 82.2) than for those who remained normotensive (M = 71.3) (t(82) = 5.74, p = .000), supporting the research hypothesis that adolescent nulliparas who develop PIH have higher average MAP-2 values than adolescent nulliparas who remain normotensive throughout their pregnancies. Additionally, MAP values of normotensive adolescents were found to be lower than previously established standards.

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