Labor, Delivery, and Obstetrical Complications Flashcards
Manipulation of the fetus through the maternal abdomen to a cephalic presentation
External cephalic version
Macrosomia is defined as having a birthweight of:
> 4,000 g
The most common cause of obstetric hemorrhage
Uterine atony
Abnormal labor pattern wherein there is no descent in the deceleration phase or second stage
Failure of descent
Preferred treatment for prolonged latent phase
Bed rest
In the absence of cephalopelvic disproportion, what is the preferred treatment for arrest disorders?
Oxytocin
Engagement is the mechanism by which the greatest transverse diameter of the fetal head in an occiput presentation passes through the pelvic inlet. What is this diameter and how long is it?
Biparietal diameter, 9.5 cm
In multiparas, protracted active-phase dilatation is defined as cervical dilatation occurring at a rate less than ___ [cm/hr].
1.5 cm/hr
In what part of the uterus is the incision made for a low transverse cesarean section?
Lower uterine segment
What is the most dreaded complication of preterm premature rupture of membranes?
Chorioamnionitis
Prolonged latent phase in nulliparas
> 20 hr
Normal range for the single deepest pocket or maximum vertical pocket in the ultrasonographic assessment of amnionic fluid volume
2-8 cm
Normal range for amnionic fluid index
5-24 cm
Implantation in the lower uterine segment such that the placental edge does not reach the internal os and remains outside a 2-cm wide perimeter around the os
Low-lying placenta
Most characteristic clinical feature of placenta previa
Painless bleeding
Imaging modality of choice in confirming placenta previa
Transabdominal sonography (96% accuracy)
Chorionic villi attached to the myometrium
Placenta accreta
Chorionic villi invade the myometrium
Placenta increta
Chorionic villi penetrate the myometrium and to or through the serosa
Placenta percreta
Maneuver used in the manual delivery of the aftercoming head in breech deliveries
Mauriceau maneuver
In delivery of the fetus in face presentation, vaginal delivery is usually successful except in this position
Mentum posterior position
Average length of the funis
55 cm