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MCN > Components of Labor - Intrapartal Care > Flashcards

Components of Labor - Intrapartal Care Flashcards

1
Q

is composed of the bony pelvis and the soft
tissues of the cervix, vagina, and perineum.

A

PASSAGE

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2
Q

the fetus

A

PASSENGER

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3
Q

or the uterine contractions and the use of
abdominal muscles for the pushing stage

A

POWERS

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4
Q

psychological state of the laboring woman

A

PSYCHE o

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5
Q

the route a fetus must travel from
the uterus through the cervix and
vagina to the external perineum.

A

Passage

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6
Q

bony passage:

A

pelvis

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7
Q

soft passages

A

cervix, vagina,
perineum.

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8
Q

has no obstetrical significance

A

False Pelvis

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9
Q

Linea Terminalis

A

Inlet

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10
Q

Where fetus must pass int he birth process

A

True Pelvis

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11
Q

(Inlet)well-rounded forward
& backward; wide pubic
arch; “female pelvis”

A

Gynecoid

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12
Q

The pubic arch forms an
acute angle ; lower pelvic
dimensions extremely
narrow; “male pelvis”

A

Android

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13
Q

smoothly curved oval inlet,
but AP diameter is shallow;
“flattened” pelvis

A

Platypelloid

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14
Q

Narrow transverse diameter
-AP diameter of inlet is
larger than d usual;
“ape-like” pelvis

A

Anthropoid

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15
Q

Distance between upper (superior) border
of the symphysis pubis to sacral
promontory
Adequate size: 11-11.5 cm

A

True Conjugate

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16
Q

Widest AP diameter at outlet
 Distance from the lower (inferior) margin
of the symphysis to the sacral promontory
 Adequate size: 12.5 cm or more

A

Diagonal Conjugate

17
Q

Smallest AP diameter of the pelvic inlet
through which the head must pass
* Distance between the inner surface of the
symphysis pubis to sacral promontory
* To estimate: subtract 1.5 to 2 cm from the DC

A

Obstetric Conjugate

18
Q

Smallest diameter of
midpelvis
 Distance between the 2
ischial spines identified
through palpation during
Internal Examination (IE)
 Curved sacrum at midpelvis
allows more room for
presenting part

A

Transverse diameter:

19
Q

Smallest measurement in the distance
between the 2 ischial tuberosities
 The narrowest transverse diameter of
the pelvic outlet though which the
widest diameter of the fetal head
(biparietal diameter) must pass
through

A

PELVIC OUTLET

20
Q

The ____ effaces
and dilates sufficiently
to allow the first fetal
portion to descend
into the vagina

A

cervix

21
Q

The ___ ___
(muscular layer)
helps the fetus rotate
anteriorly as it passes
through the birth
canal.

A

pelvic floor

22
Q

The ___ _____
participates in
childbirth via passive
distention.

A

vaginal canal

23
Q

widest diameter

A

Fetal head

24
Q

A ________ soft
membranous gaps
(sutures) between the
cranial bones.

A

fontanel

25
Q

the overlapping
of skull bones along the
suture lines; cause a
change in the shape of the
fetal skull to one long and
narrow (that facilitate
passage to the rigid pelvis).

A

Molding

26
Q

To fit through the inlet of the birth canal best, a fetus must present the smallest diameter (the
transversediameter) of the head to the smallest diameter of the maternal pelvis (diagonal conjugate).

A

DIAMETERS OF THE FETAL SKULL

27
Q

The smallest AP diameter;
measurement (approximately 9.5
cm); measured from the inferior
aspect of the occiput to the center
of the anterior fontanel

A

Suboccipitobregmatic

28
Q

Measured from the occipital
prominence to the bridge of
the nose, is approximately 12
cm.

A

Occipitofrontal Diameter

29
Q

The widest AP diameter
(approximately 13.5 cm);
measured from the posterior
fontanel to the chin

A

Occipitomental Diameter

30
Q

(Transverse
Diameter) The
smallest diameter
of the fetal head
which measures
about 9.25 cm.

A

Biparietal
Diameter

31
Q

The narrowest
diameter at the
pelvic inlet; a space
approximately 11
cm wide.

A

Anteroposterior
Diameter

32
Q

The best presentation for birth is when the

A

fetus presents
a Biparietal Diameter to AP Diameter of pelvis.

33
Q

At the _____, If a fetus presents one of the AP
diameters of the skull to the AP diameter of the
inlet, ENGAGEMENT, into the pelvis, may oc

A

Inlet

34
Q

At the _____, the fetus must rotate to present this narrowest fetal head diameter (BD*) to the
maternal Transverse diameter, a space, approximately 11 cm wide

A

Outlet

MCN (46 decks)

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