OB Exam 3 Question and Answers.

OB Exam 3 Question and Answers
5 essential factors that affect the process of labor (*5 P's*) - CORRECT ANSWER IS 1.
Passenger
2. Passageway
3. Powers
4. Position
5. Psych. / Psychosocial

Obstetric Conjugate - CORRECT ANSWER IS -distance from middle posterior
symphysis pubis to the sacral promontory
-*determines whether presenting part can enter the inlet*
-*shortest anterior posterior measurement*

Transverse Diameter - CORRECT ANSWER IS -interspinous diameter
-*shortest pelvic diameter*

Gynecoid (pelvic shape) - CORRECT ANSWER IS -most common and favorable for
vaginal birth

Anthropoid (pelvic shape) - CORRECT ANSWER IS -not as common, but still favorable
for vaginal birth

if Rupture of Membranes happen... - CORRECT ANSWER IS -ALWAYS come into the
hospital and monitor FHR

First Stage of Labor - CORRECT ANSWER IS -onset of regular contractions to full
cervical dilation
-contains latent, active, and transition phases
-latent: onset of regular contractions > 3-4 cm
-active: 3-4 cm > 8 cm
-transition: 8-10 cm

Second Stage of Labor - CORRECT ANSWER IS full cervical dilation to delivery of the
fetus

Third Stage of Labor - CORRECT ANSWER IS birth of fetus to delivery of placenta

Fourth Stage of Labor - CORRECT ANSWER IS 1-4 hours after delivery

Flexion - CORRECT ANSWER IS fetal head flexes as it meets resistance and allows
the smallest diameter of fetal head to present in the pelvis

Most common fetal position - CORRECT ANSWER IS LOA

, True Labor Symptoms - CORRECT ANSWER IS -regular contractions that increase in
strength, lasting longer in duration, increase in frequency, *increase in intensity when
walking*, felt in the lower back mainly then radiate to abdomen, continue despite
comfort measures

False Labor Symptoms - CORRECT ANSWER IS -irregular contractions, or only regular
for brief periods, decrease or stop when walking, in the back or abdomen above the
navel, no change to the cervix

Best way to assess the strength of contractions w/out monitor - CORRECT ANSWER IS
-physically feel the fundus with fingers

Normal Amniotic Fluid - CORRECT ANSWER IS -NO strong odor, slightly alkaline
(blue/green pH paper), should have ferning under microscope,
-Normally pale or straw colored

Greenish / Brown Amniotic Fluid - CORRECT ANSWER IS -indicates meconium in the
fluid already
-could be caused by hypoxic episode and potential distress of fetus

Port-wine / Bloody Amniotic Fluid - CORRECT ANSWER IS -indicates bleeding
associated w/ abruption

Latent Phase of Labor - CORRECT ANSWER IS (0-3 cm dilated)
-check BP, pulse, resps: q60min
-Temp: q4h or q1-2h if ROM or > 37.5 C
-Uterine Activity: q30-60min
-FHR: q30-60min if reassuring
-vaginal show and behavior: q30-60min
-normal to be up and walking in this stage

Active Phase of Labor - CORRECT ANSWER IS (4-7 cm dilated, moderate ctx q2-3min
w/ 50-60 sec break)
-check BP, pulse, resp: q60min
-ctx and FHR: q15-30min
-vaginal show: q30min
-behavior: q15min

Transitional Phase of Labor - CORRECT ANSWER IS (8-10 cm dilated, strong ctx q2-
3min 60-90 sec. break)
-check BP, pulse, resp: q30-60min if normal
-Ctx and FHR: q15min
-assess increased bloody show: q15min
-behavior: q5min

Intrapartum Elimination - CORRECT ANSWER IS -voiding q1-2h