Parturition: Normal Labor & Delivery Flashcards Preview

OB+GYN > Parturition: Normal Labor & Delivery > Flashcards

Flashcards in Parturition: Normal Labor & Delivery Deck (30)
Loading flashcards...
1
Q

4 phases of Parturition (and duration)

A

Phase I - Quiescent phase (Conception - 2 weeks before labor)

Phase II - Activation phase
(2 weeks before labor - Onset of labor)

Phase III - Stimulation phase
(Onset of labor - Delivery of Placenta)

Phase IV - Involution
(Delivery of conceptus - Fertility restored)

2
Q

3 Stages of Labor

A

Stage I - Cervical Dilatation and Effacement

Stage II - Fetal Expulsion

Stage III - Placental Separation and Expulsion

3
Q

Stage I of Labor (Cervical Dilation and Effacement) Is further divided into 2 Phases:

A

Stage I (Cervical Dilation and Effacement)

> Phase I: Latent Phase (Perceived regular contractions - 3 cm dilation)

> Phase II: Active Phase (Cervix ≥ 3cm - 10cm)

4
Q

Active Phase of Stage I Labor further consists of 3 phases:

A

Active Phase (≥ 3cm - 10cm):
> Acceleration phase
> Phase of maximum slope
> Deceleration phase

5
Q

Stage I Labor (Latent phase):

Duration for nulliparas vs multiparas

A

Stage I Labor (Latent phase):

Nulliparas: ~ 20 hours
Multiparas: ~ 14 hours

6
Q

Stage I labor (Active phase):

Normal rate of cervical dilatation for nulliparas vs multiparas

A

Stage I labor (Active phase):

Nulliparas: 1.2cm/hour
Multiparas: 1.5cm/hour

7
Q

Which subphase of the Active phase of labor is a reflection of uterine contraction efficiency?

A

Phase of maximum slope

8
Q

Which subphase of the Active phase of labor predicts labor outcome

A

Acceleration phase

9
Q

Which subphase of the Active phase of labor reflects cephalopelvic relationships

A

Deceleration phase

10
Q

The 2nd Stage of Labor begins with what phase?

A

Descent phase

11
Q

7 Cardinal movements of Labor

A
  1. Engagement
  2. Descent
  3. Flexion
  4. Internal Rotation
  5. Extension
  6. External Rotation
  7. Expulsion
12
Q

The Cardinal movements of labor begin in which phase?

A

Deceleration phase

13
Q

Shape of Friedman’s labor curve

A

Sigmoidal

14
Q

Asynclitism is a disorder of Engagement wherein the Sagittal suture of the fetus is not found midline between which landmarks of the bony pelvis?

A

Sacral promontory and symphysis pubis

15
Q

Disorder of Engagement wherein the sagittal suture of the fetus is deflected towards the sacral promontory?

A

Anterior asynclitism

16
Q

Disorder of Engagement wherein the sagittal suture of the fetus is deflected towards the symphysis pubis?

A

Posterior asyncitism

17
Q

3 Functional divisions of Labor

A

> Preparatory Division (Latent phase - acceleration phase)
Dilatational Division (Phase of maximum slope)
Pelvic Division (Deceleration - Descent)

18
Q

Landmark of the Pelvic inlet

A

Linea terminalis

19
Q

Landmark of the Midpelvis

A

Ischial spines

20
Q

Landmark of the pelvic outlet

A

Ischial tuberosities

21
Q

Cutoff value for Diagonal conjugate to ensure adequate passage

A

> 11.5cm

22
Q

Formula to compute for Obsetric conjugate

A

OC = DC - 1.5-2cm

23
Q

Johnson’s rule for Estimating Fetal weight

A

W = (FH - n) x 155

n = 12 if vertex is engaged
n = 11 if vertex is not engaged

24
Q

Palmar method for Estimating Fetal weight

A

W = 500g x no. of palms

25
Q

Maneuver during delivery wherein the head of the fetus is manually extended

A

Ritgen maneuver

26
Q

Signs of Placental separation

A
  1. Gush of blood
  2. Uterus becomes globular
  3. Rise of uterus in the abdomen
  4. Lengthening of the cord
27
Q

Placental separation mechanism wherein the maternal side appears first. Often bloody, followed by retained fragments

A

Dirty Duncan

28
Q

Placental separation mechanism wherein the fetal side appears first. Less bloody

A

Shiny Schultze

29
Q

At what measurement of cervical dilatation signals the Deceleration phase

A

8cm

30
Q
A