Abnormal Labour Flashcards
(12 cards)
Define dystocia.
Difficult labour characterized by abnormally slow labour progress
Which 3 variables is the progression of labour dependent on?
- Powers- efficiency of contractions
- Passenger- fetus (size, presentation, position)
- Passage- uterus, cervix, bony pelvis
Give 3 clinical findings in women with ineffective labour.
- Inadequate cervical dilation or fetal descent
- Fetopelvic disproportion
- Ruptured membranes without labour
What does uterine malfunction result from?
Uterine overdistention or obstructed labour or both
What is dysfunctional uterine activity characterized by?
Weak and infrequent contractions
What can cephalopelvic disproportion be due to?
Large head, small pelvis or both
When is CPD suspected in labour?
- progress is slow or actually arrests despite efficient contractions
- fetal head is not engaged
- severe moulding and caput formation on V/E
- head poorly applied to cervix
Name 3 presentations result in poor progression of labour.
- Face
- Brow
- Shoulder
What is cervical dystocia?
A non-compliant cervix which effaces but fails to dilate because of severe scarring
What is a deep transverse arrest?
Arrest of the descent of the fetal head at the level of the ischial spines on a transverse position
Name the 3 patterns of abnormal labour.
- Prolonged latent phase
- Primary dysfunctional labour
- Secondary arrest
Give 5 risk factors for fetal compromise in labour.
Prematurity, Postmaturity, Multiple pregnancy, Prolonged labour, Augmentation with oxytocin, uterine hyper stimulation, Cord prolapse, Maternal diabetes, Chorioamnionitis
