The nurse determines that the fetus is in a vertex presentation ...

[Evvie72]

The nurse determines that the fetus is in a vertex presentation at 0 station. This means the fetal
 
  a. head is on the floor of the perineum
  b. head has entered the pelvic outlet
  c. head is not engaged
  d. occiput is at the level of the ischial spines

Question 2

A woman in labor is breathing into a mouthpiece just before the start of her regular con-tractions. As she inhales, a valve opens, and gas is released. She continues to inhale the gas slowly and deeply until the contraction starts to subside.
 
  When the inhalation stops, the valve closes. This procedure is: a. Not used much anymore.
  b. Likely to be used in the second stage of labor but not in the first stage.
  c. An application of nitrous oxide.
  d. A prelude to cesarean birth.

[gasdhashg]

Answer to Question 1

D
Station is the relationship of the ischial spines of the mother to the presenting part of the fetus, and a 0 station means the fetus is level with the ischial spines. When the head is on the floor of the perineum represents greater than +5 station. The head entered the pelvic outlet represents a minus station. When the head is not engaged, it indicates the largest diameter of the presenting part has not passed through the inlet of the pelvis.

Answer to Question 2

C

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A This is an acceptable method of pain control more commonly used in Canada or the United Kingdom.
B Nitrous oxide can be used safely in both the first and second stages of labor.
C This is an application of nitrous oxide mixed with oxygen that can be inhaled at a low concentration. This reduces, however, does not eliminate pain and is commonly used in either the first or second stage of labor (or both) as part of the preparation for a vaginal birth. Nitrous oxide can be used in combination with other measures for pain relief.
D Nitrous oxide would not provide adequate pain relief for a woman about to un-dergo a cesarean birth.