What are the 4 types of malpresentation?
What is the definition of the lie?
The relationship of the long axis of the fetus to the long axis of the uterus.
It can be longitudinal, transverse or oblique
What is the definition of the presentation?
The part of the fetus which enters the brim of the pelvis first and occupies the lower pole of the uterus.
It can be vertex, face, brow, breech or shoulder.
What is the definition of the position?
The relationship of the denominator to the 6 areas of the pelvic brim.
It can be ROA, ROP, ROL, LOA, LOP or LOL
How is the engagement of the head measured?
Measured by the amount of fetal skull (in fifths) palpated abdominally above the pelvic brim.
What is the definition of malposition of the occiput?
When the occiput occupies the posterior quadrant of the maternal pelvis
If the occiput is in the posterior quadrant of the pelvis, what is the:
List 4 possible causes of malposition of the occiput
On inspection of the abdomen, what can suggest malposition of the occiput?
Saucer dip below umbilicus
Loss of fetal curvature - curve of back cannot be seen
On palpation of the abdomen, what can suggest malposition of the occiput?
Limbs will be easily palpable and back unable to be palpated
Head may be high and free
On auscultation of the fetal heart, what can suggest malposition of the occiput?
The FH can be heard midline under the umbilicus or in the flanks
What 4 signs during labour would suggest malposition of the occiput?
What 3 things will affect the outcome of an OP position?
What are the 3 possible outcomes of an OP position?
Describe a long internal rotation from an OP position
Occurs with good uterine contractions
The occiput rotates 3/8ths of a circle to an OA position and birth continues normally
Describe a short internal rotation from an OP position
Occurs when there is insufficient flexion of the head
Head rotates 1/8th of a circle and sinciput becomes the leading part
Baby is born face to pubes
Describe a deep transverse arrest
Head remains deflexed
Occipitofrontal diameter is caught above the ischial spines
During VE, diagnosed when able to palpate both fontanelles and saggital suture in transverse diameter
How should a deep transverse arrest be managed?
Using Kiellands forceps to rotate to OA position
List 10 possible effects that OP position might have on labour
List 7 points to consider in the care of a woman in labour whose baby is lying in the OP position
List 3 maternal and 2 neonatal points to consider in the postnatal care following an OP delivery
Maternal
Neonatal
Describe a face presentation
Face is directly over the internal os
The attitude of the head is complete extension
Occiput is in contact with the spine
When does primary face presentation develop?
Before the onset of labour
When does secondary face presentation develop?
After the onset of labour