Reproduction Chapter 13 PPT 3

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Cephalic (vertex) presentations

-Military -Brow -Face

first letter (fetal position)

The ___ defines whether the presenting part is tilted toward the left (L) or the right (R) side of the maternal pelvis.

ROA

___ is the second most favorable birhting positon

fetal engagement

___ signifies the entrance of the largest diameter of the fetal presenting part (usually the fetal head) into the smallest diameter of the maternal pelvis

chin (mentum M)

face presentation (fetal position)

scapula acromion process (a)

shoulder presentation (fetal position)

frank breech presentation

the buttocks present first with both legs extended up toward the face

full or complete breech

the fetus sits crossed-legged above the cervix

occipital bone (O)

vertex presentation (fetal position)

breech categories

-Frank -Full or complete -Footling or incomplete

shoulder presentation

A ___ or shoulder dystocia occurs when the fetal shoulders present first, with the head tucked inside.

footling or incomplete breech

One or two feet as the presenting part, with one or both hips extended.

third letter

The ___ defines the location of the presenting part in relation to the anterior (A) portion of the maternal pelvis or the posterior (P) portion of the maternal pelvis. If the presenting part is directed to the side of the maternal pelvis, the fetal presentation is designated as transverse (T).

second letter

The ___ represents the particular presenting part of the fetus: O for occiput, S for sacrum (buttocks), M for mentum (chin), A for acromion process, when denoting the fetal position in shoulder presentations

reaches 0 station

The fetus is said to be engaged in the pelvis when the presenting part reaches....

Landmarks

The landmark fetal presenting parts include the occipital bone (O), which designates a vertex presentation; the chin (mentum [M]), which designates a face presentation; the buttocks (sacrum [S]), which designate a breech presentation; and the scapula (acromion process [A]), which designates a shoulder presentation.

floating

The term ___ is used when engagement has not occurred, because the presenting part is freely movable above the pelvic inlet.

minus station

When the presenting part is above the ischial spines, the distance is recorded as ___

Plus station

When the presenting part is below the ischial spines, the distance is recorded as ___

Fetal position

___ describes the relationship of a given point on the presenting part of the fetus to a designated point of the maternal pelvis

Zero (0) station

___ is designated when the presenting part is at the level of the maternal ischial spines.

LOA

___ is the most common (and most favorable) fetal position for birthing today

Breech presentation

___ occurs when the fetal buttocks or feet enter the maternal pelvis first and the fetal skull enters last.

Fetal presentation

___ refers to the body part of the fetus that enters the pelvic inlet first (the "presenting part")

fetal station

___ refers to the relationship of the presenting part to the level of the maternal pelvic ischial spines. ___ is measured in centimeters and is referred to as a minus or plus, depending on its location above or below the ischial spines.

Buttocks (sacrum S)

which designate a breech presentation (fetal postion)


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