Unstable Lie in Obstetrics

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Questions and Answers

What term is used to describe an unstable lie in obstetrics?

  • Transverse lie (correct)
  • Sunny-side up lie
  • Anterior lie
  • Posterior lie

Which position is NOT associated with an unstable lie in obstetrics?

  • Shoulder presentation
  • Vertex (correct)
  • Footling breech
  • Complete breech

Which fetal presentation may lead to an unstable lie in obstetrics?

  • Mentum posterior
  • Sinciput anterior
  • Occiput anterior
  • Brow presentation (correct)

In an unstable lie, the long axis of the fetus is perpendicular to the mother's?

<p>Umbilicus (C)</p> Signup and view all the answers

Which type of pelvic abnormalities can contribute to an unstable lie?

<p>Pelvic inlet contraction (C)</p> Signup and view all the answers

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Study Notes

Unstable Lie in Obstetrics

  • An unstable lie in obstetrics is also referred to as an oblique lie.
  • The transverse position is NOT associated with an unstable lie in obstetrics.
  • A compound fetal presentation may lead to an unstable lie in obstetrics.
  • In an unstable lie, the long axis of the fetus is perpendicular to the mother's long axis.
  • Certain types of pelvic abnormalities, such as a platypelloid pelvis or a rachitic pelvis, can contribute to an unstable lie.

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