Fetomaternal relationship Flashcards
Shape of anterior fontanelle
Kite shaped
the shape of posterior fontanelle
triangular shaped
Which diameter engages in
- brow presentation
- face presentation
- Vertex
- less flexed head
- occipitoposterior
Brow - mento-vertical
Face - Submento-bregmatic
Vertex - Suboccipto-bregmatic and biparietal
Less flexed head - suboccipito-frontal
OP - Occipito-frontal
Diameters of
- Biparietal
- Suboccipito- bregmatic
- Submento-bregmatic
- mentovertical
- occipito- frontal
- Suboccipito-frontal
- Biparietal - 9.5 cm
- Suboccipito- bregmatic 9.5cm
- Submento-bregmatic 9.5cm
- Suboccipito-frontal 10cm
- occipito- frontal 11.5cm
- mentovertical 13cm
Define attitude
The relationship between the fetal head and limbs to the trunk of the fetus. Either flexion or extension
Define lie
the relationship of the long axis of the fetus to that of the uterus. Longitudinal, transverse or oblique
Define presentation
it is the part of the fetus in contact with the lower pole of the uterus or at the pelvic brim.
Cephalic, podalic, shoulder or funic
Presenting part
Part of the presentation which lies immediately inside the internal os of the cervix.
Denominator
it is a defined part of the presentation or the presenting part that denotes the position of the fetus
Find the denominator of the following
Vertex
Face
Breech
Shoulder
Vertex Occiput
Face Mentum
Breech Sacrum
Shoulder Acromion
Engagement
It is said to have occurred when the widest diameter of the presentation has passed through the pelvic brim.
In breech, which diameter engages
bitronchanteric
Descent
this describes the number of fifths of the fetal head that is palpable abdominally. it thus pertains to cephalic presentation
When is the head said to be engaged in terms of descent
two-fifths or less
Position
Relationship between the denominator of the presenting part and some fixed points on the pelvic brim.
