abnormal fetal positions Flashcards Preview

Obstetrics > abnormal fetal positions > Flashcards

Flashcards in abnormal fetal positions Deck (20):
1

what is OP

occiput in one of the posterior segments of the pelvis. post fontanelle

2

why is labour prolonged in OP position

degree of rotation needed

3

what happens to baby during labour OP

60% rotate to OA,some to transverse and arrest and some to truly posterior

4

what is the commonest malpresentation

breech

5

conditions pre disposing to breech

contracted pelvis, bicornuate uterus, fibroid uterus, oligohydramnios, placenta praevia, spina bifida, hydrocephalic fetus

6

what can women complain of if breech

pain under their ribs

7

main causes of morbidity breech

intracranial haemorrhage, asphyxia, fracture of clavicle femur humerus

8

what is the commonest type of breech

frank- extended legs

9

types of breech

frank (extended legs), complete (flexed legs), footling

10

which type of breech has the highest risk of cord prolapse

footling

11

management breech if vaginal delivery planned

external cephalic version- 36 weeks primip, 37 weeks multip

12

contraindications cephalic version

placenta praevia, ruptured membranes, APH in last 7 days, multiple pregnancy, uterine scars, fetal abnormality, pre eclampsia, unstable lie

13

contraindications vaginal delivery in breech

footling, kneeling breech, inadequate pelvis, prev c section, hyperextended neck, concomitant condition

14

what leads to a face delivery

most by chance- head extends rather than flexes as engages, 15% due to congenital malformation eg anencephaly

15

what is the most unfavourable presentation

brow

16

associations brow presentation

contracted pelvis, very big fetus

17

management brow presentation

c section as head doesn't engage

18

causes of transverse lie

multiparity, multiple pregnancy, polyhydramnios, placenta praevia, contracted pelvis

19

which lie has a high risk of cord prolapse

transverse lie

20

management transverse lie

ECV may be attempted at 32 weeks. c section