4. Passanger pt 2

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16 Terms

1
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what is fetal position?

the location of a fetal presenting landmark within the maternal pelvis

2
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what does the first letter in a fetal-position abbreviation indicate? *

the maternal right (R) or left (L) side

3
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what does the second letter in a fetal-position abbreviation indicate? *

the fetal presenting landmark, such as occiput (O)

4
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what does the third letter in a fetal-position abbreviation indicate? *

anterior (A), posterior (P), or transverse (T) within the maternal pelvis

5
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which fetal position is most common and most favorable for vaginal birth? *

left occiput anterior (LOA)

  • the occiput points toward the mother’s front-left pelvis


<p>left occiput anterior (LOA)</p><ul><li><p>the occiput points toward the mother’s front-left pelvis</p></li></ul><p></p>
6
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what does right occiput anterior (ROA) mean? *

the occiput (back of head) points toward the mother’s front-right pelvis

  • favorable for vaginal birth


<p>the occiput (back of head) points toward the mother’s front-right pelvis</p><ul><li><p>favorable for vaginal birth</p></li></ul><p></p>
7
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what is an occiput posterior (OP) position? *

the occiput faces the mother’s back, with the fetal face toward her front

  • “sunny-side up,”

  • often causing significant back pain and longer labor


<p>the occiput faces the mother’s back, with the fetal face toward her front</p><ul><li><p>“sunny-side up,”</p></li><li><p>often causing <strong>significant back pain and longer labor</strong></p></li></ul><p></p>
8
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what is fetal station?

the level of the presenting part relative to the maternal ischial spines


<p>the <strong>level of the presenting</strong> part relative to the maternal <strong>ischial spines</strong></p><p></p>
9
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what does a negative fetal station mean?

the presenting part is above the ischial spines

  • furthest from being born


10
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what does 0 station mean?

the presenting part is level with the ischial spines

<p>the presenting part is<strong> level with the ischial spines</strong></p>
11
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what does a positive fetal station mean?

the presenting part is below the ischial spines, moving (closest) toward birth

<p>the presenting part is <strong>below the ischial spines</strong>, moving (closest) toward birth</p>
12
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what is the order of measurements in a cervical examination?

dilation in cm → effacement in % → fetal station

13
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what is fetal engagement?

happens when the widest diameter of the presenting part has entered the pelvic inlet

  • associated with the presenting part reaching 0 station


<p>happens when the <strong>widest diameter of the presenting part</strong> has <strong>entered the pelvic inlet</strong></p><ul><li><p>associated with the presenting part <strong><u>reaching 0 station</u></strong></p></li></ul><p></p>
14
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what does a floating presenting part mean?

it is not engaged and moves freely above the pelvic inlet

<p><strong>it is not engaged</strong> and moves freely above the pelvic inlet</p>
15
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before artificial rupture of membranes (AROM), what should be checked?

fetal engagement

16
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why should engagement be checked before artificial rupture of membranes?

an unengaged presenting part increases the risk of cord prolapse