1M - Parturition Flashcards

1
Q

Clinical labor is what phase of parturition?

A

Phase 3

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2
Q

This is the quiescence stage of parturition?

A

Phase 1

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3
Q

This is the phase of parturition where contractile unresponsiveness and cervical softening are manifested?

A

Phase 1

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4
Q

This phase of parturition involves the uterine preparation for labor, cervical ripening and formation of the lower uterine segment?

A

Phase 2

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5
Q

What are the stages of labor?

A

Contraction, cervical dilation and fetal and placental expulsion

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6
Q

This phase of parturition involves the involution of the uterus, cervical repair and breastfeeding?

A

Phase 4

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7
Q

This phase of parturition can be called the phase of parturient recovery?

A

Phase 4

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8
Q

What do you call the low intensity myometrial contractions that are felt during the quiescent stage and this normally do not cause cervical dilation?

A

Braxton Hicks contractions or false labor

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9
Q

To maintain quiescence, prostaglandins are are markedly increased? T or F?

A

False

They are suppressed

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10
Q

What genetic defects can cause cervical insufficiency during pregnancy?

A

Ehler Danlos Syndrome and Marfan syndrome

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11
Q

This phase of parturition may also be called the phase of uterine awakening or activation?

A

Phase 2

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12
Q

When does phase 2 of parturition start?

A

Last few weeks of pregnancy

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13
Q

How long does the Phase 1 of parturition last?

A

Start of pregnancy until near the end of pregnancy

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14
Q

Phase 2 of parturition happens because of the withdrawal of what hormone?

A

Progesterone

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15
Q

This phase of of parturition involves the formation of the lower uterine segment and the descent of the fetus to or through the pelvic inlet?

A

Phase 2

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16
Q

Oxytocin receptors level rise during phase 2 of parturition, what are the primary regulators of oxytocin receptor expression?

A

Estrogen and progesterone

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17
Q

This hormone maintains uterine quiescence through inhibition of myometrial oxytocin response?

A

Progesterone

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18
Q

This substance is largely responsible for the structural disposition of the cervix?

A

Collagen

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19
Q

Production of these substances during cervical ripening is thought to increase viscoelasticity, hydration and matrix disorganization?

A

Glycosaminoglycans and proteoglycans

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20
Q

Inflammatory substances are increased during stage 2 of parturition. T or F?

A

True

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21
Q

Therapies to prevent cervical ripening are present? T or F?

A

False

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22
Q

What are the fetal contributions to parturition?

A

Fetal stretch, Fetal endocrine cascades, Surface Protein A

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23
Q

This fetal substance from the placenta and decidua is required for lung maturation of the fetus?

A

Surface Protein A

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24
Q

Before 37 weeks of gestation, and before lightening, what organs does the uterus compress into?

A

Lungs and diaphragm

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25
After 37 weeks, or after lightening, what organs are compressed by the fetus?
Bladder and cervix
26
What are the characteristics of true labor?
Contraction, Cervix, Fetus Contractions are regular, increased in intensity and duration when walking, felt along the lower back to the abdomen Bloody show Dilation and effacement of the cervix fetus is engaged
27
What are the characteristics of false labor?
Contraction, Cervix and Fetus Irregular contractions - braxton hicks contractions Cervix is unchanged fetus is ballotable
28
Stage 1 of labor is the dilatation of the cervix from?
0 - 10 cm
29
This stage of labor starts from complete dilatation to the effacement and delivery of the fetus?
Stage 2
30
This stage of labor starts from the delivery of the baby to the delivery of the placenta?
Stage 3
31
This stage of labor happens at the first hour after delivery?
Stage 4
32
This process begins with the onset of regular uterine contractions and ends with delivery of the newborn and expulsion of the placenta
Labor
33
What are important fetal factors to be considered by the mechanism of labor?
Fetal lie, fetal presentation, fetal attitude or posture, fetal position
34
This relation of the fetal axis to that of the mother?
Fetal Lie
35
What is the fetal lie in more than 99% of labors at term?
Longitudinal lie
36
Transverse lie predisposes the mother and fetus to what conditions?
Hydramnios. Placenta previa, uterine anomalies
37
If the fetal and maternal axis crosses at a 45 degree angle, what is the fetal lie?
Oblique lie
38
This is defined by the presenting part of the fetal body that is in closest proximity to the birth canal?
Fetal presentation Either cephalic or breech for longitudinal shoulder for transverse
39
What is the fetal presentation if the presenting part is the occipital fontanel?
vertex or occiput presentation
40
If the neck is only partly flexed what is the presenting part and the fetal presentation?
anterior fontanel; sinciput presentation
41
If the fetal neck is partially extended, what is the fetal presentation?
Brow Presentation
42
If the fetus has its neck sharply extended, what is the fetal presentation?
face presentation
43
Sinciput and brow presentation can convert to vertex or face presentation as labor progresses? T or F?
True
44
Failure of the fetal presentation to convert to vertex or face presentation can result to what condition?
Dystocia
45
Describe Frank Breech presentation?
Hips are flexed and thighs are extended
46
Describe complete breech presentation?
Both the hips and thighs are flexed
47
Describe footling breech?
At least one foot presents below the pelvis
48
This is defined as a characteristic posture that the fetus assumes in the later months of pregnancy?
Fetal attitude or posture
49
What is the common fetal attitude?
Convex
50
If the fetal attitude is well flexed, what is it called?
Suboccipitobregmantic - 9.5 cm
51
If the fetal attitude is less well flexed or deflexed, what is it called?
occipitofrontal - 11.5cm
52
If the fetal presentation is brow presentation, what is the fetal attitude?
Occipitomental (extended fetal attitude) - 13 cm
53
If the fetal attitude is hyperextended, what is the fetal presentation?
Face presentation Fetal attitude is called submentobregmatic - 9.5 cm
54
This refers to the relationship of an arbitrary chosen portion of the presenting part to the right or left of the birth canal?
fetal Position
55
What Leopold's maneuver identifies which fetal pole occupies the fundus? (fetal presentation)
LM 1 (if breech or cephalic)
56
Which Leopold's Maneuver determines the fetal lie?
LM2 (Longitudinal, transverse or oblique)
57
Which Leopold's maneuver checks whether the fetus is already engaged or not?
LM 3
58
What Leopold's Maneuver checks for the fetal position?
LM 4 (LOT, ROA, etc)
59
Enumerate the cardinal movements of labor in order?
Engagement, descent, flexion, internal rotation, extension, external rotation, expulsion
60
This is the mechanism in whihc the biparietal diameter passes through the pelvic inlet?
Engagement
61
This is the first requisite of birth?
Descent
62
In nulliparas, descent happpens together with engagement? True or false?
False, it is in multiparas In nulliparas, engagement may happen before labor and further descent may not follow until onset of second stage of labor
63
This cardinal movement is the change from suboccipitobregmatiic to the longer occipitofrontal diameter?
Flexion
64
Movement of the head in such a manner that the occiput gradually moves toward the symphysis pubis anteriorly or less commonly posteriorly towards the sacrum
Internal Rotation
65
This cardinal movement brings the base of the occiput into direct contact with the inferior margin of he symphysis pubis?
Extension
66
This cardinal movement of labor takes place when the head reaches the vulva.
Extension
67
This cardinal movement is also called restitution which returns the head into the oblique position and completion towards transverse position of the shoulders.
External rotation
68
This cardinal movement of labor brings the bisacromial diameter of teh fetus in relation to the AP diameter of the pelvic outlet
External Rotation
69
This cardinal movement of labor happens immediately after external rotation?
Explulsion
70
This is defined by uterine contractions that bring about effacement and dilatation of the cervix?
labor
71
This division of the first stage of labor is characterized by little dilatation and cervical connective tissue changes?
Preparatory division
72
This division of the first stage of labor is also called the latent phase?
Preparatory division
73
What measurement of cervical dilatation indicates the start of active labor?
6 cm
74
This division of the 1st stage of labor is affected by anesthesia?
Preparatory division
75
This division of 1st stage of labor is characterized by rapid dilatation and is unaffected by sedation or anesthesia?
Dilatational division
76
What is prolonged latent phase?
Multiparas - 14 hrs Nulliparas - 20 hrs
77
This division of 1st stage of labor is called the deceleration phase of cervical dilatation?
Pelvic Division
78
This division of 1st stage of labor is where cardinal movement of labor begins?
Pelvic division
79
This stage of labor starts with complete cervical dilatation and ends with fetal delivery?
2nd stage
80
What are indications of labor?
Uterine contractions 5 minutes apart for 1 hour and cervical dilatation of more than 4 cm
81
What bishop score is favorable for labor induction or augmentation?
Bishop score of 8 Review bishop scoring
82
When can we say that the cervix is fully dilated?
10 cm
83
Intrapartum fetal heart rate monitoring for normal OB patient interval?
Every 30 minutes for 1st stage and every 15 minutes for 2nd stage
84
Intrapartum fetal heart rate monitoring for high risk pregnnacy?
Every 15 minutes for 1st stage and every 5 minutes for 2nd stage
85
Interval for cervical examination during the first stage of labor?
Ever 2-3 hrs
86
Food can be freely taken during the active stage of labor and delivery? T or F?
False
87
What position is most likely comfortable for the woman in labor?
Lateral recumbent
88
What position is typically avoided to avert aortocaval compression?
Supine
89
This degree of laceration involves only the vaginal epithelium or the perineal skin?
1st degree
90
Degree of laceration that involves the perineal muscles (bulbospongiosus and superficial transverse perineal msuscles) but spares the anal sphincter complex
2nd degree
91
What is involved in 3A 3rd degree laceration?
< 50% of the external anal sphincter 3B is >50% of the external anal sphincter
92
What is involved in the 4th degree laceration?
Perineal body, entire anal sphincter complex and anorectal mucosa