Mechanisms of Labour
- United Kingdom
- Bournemouth University
- Midwifery (bsc)
- Midwifery (bsc) Intrapartum
- Mechanisms of Labour
Last Modified: 2013-05-15
What is the definition of the Mechanisms of Labour?
What are the two (probmatic) issues with giving birth?
- The curve of the birth canal, which is 'C' shaped and is directed forward
- The size of the fetal head (due to the large brain!)
Why is it important that midwives understand the mechanisms of labour?
- To assess the progress of labour
- To anticipate the movements of the baby at the point of delivery
- Recognise the need to offer physiological intervention
- Call for assistance if necessary
How many basic types of pelvis shape are there?
Which is the most common type of female pelvis?
1 = Gynaecoid
2 - Anthropoid
3 - Android
4 - Platypelloid
A - Gynaecoid
B - Anthropoid
C - Platypelloid
D - Android
The 'True Pelvis' can be divided into parts, what are these?
- The Brim
- The Cavity
- The Outlet
Why is the Brim considered to be the most important of these parts?
Which diameter is the Brim widest?
( 1 point)
Which diameter of the Outlet is widest?
( 1 point)
A - Anteriorposterior
B - Oblique
C - Transverse
D - Brim
E - Cavity
F - Outlet
a - Sacral Promotory
b - Sacral ala (wing)
c - Sacral iliac joint
d - Illiopectineal line
e - Illiopectineal eminence
f - Superior pubic ramus
g - Body of pubic bone
h - Symphysis pubis
Name the bones of the fetal skull?
Name the suture lines on the fetal skull?
Which diameters of the fetal skull provide the smallest presentating part?
Which diameter of the fetal skull provides the largest presentating part?
What diameter could you expect with a Suboccipitofrontal presentation?
Upon palpation which term may be used to describe the LIE?
Upon palpation what is meant by 'Presentation'?
The part of the fetus that is lying at the pelvic brim or in the LUS.
Upon palpation what is meant by 'Denominator'?
Relates to the part identified by the Presentation.
Occiput for Chephalic
Mentum for Face
Sacrum for Breech
Upon palpation what are you considering by Attitude?
What are the eight mechanism of labour?
Internal Rotation of the head
Internal Rotation of the shoulders + External Rotation of the head
Lateral Flexion of the body
Words From Our Students
"StudyBlue is great for studying. I love the study guides, flashcards, and quizzes. So extremely helpful for all of my classes!"
Alice, Arizona State University
"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"
Tim, University of Florida
"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly! I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"
Jennifer, Rutgers University
"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"