OBSadvanced
Explain why correct placement at the vacuum flexion point matters and describe where that point is located.
Answer
The cup centre should be placed over the flexion point, approximately 3 cm anterior to the posterior fontanelle and 6 cm posterior to the anterior fontanelle. Correct placement improves traction, reduces cup detachment, promotes descent and autorotation, and flexes the head to present the smaller suboccipitobregmatic diameter.
Explanation
The **flexion point** is located approximately 3 cm anterior to the posterior fontanelle and 6 cm posterior to the anterior fontanelle. The cup centre should cover this point. Traction from the correct location encourages flexion, helping the fetal head present a smaller diameter; it also supports descent and autorotation while reducing the chance that the cup detaches.\n\n**Key takeaway:** Accurate cup placement supports effective, controlled traction and head flexion.\n\n**Glossary:** **Flexion point**: The recommended centre for vacuum cup placement; **autorotation**: Spontaneous rotation of the head as it descends; **suboccipitobregmatic diameter**: The smaller head diameter associated with a well-flexed vertex.
Related Questions
- The forceps specially designed to deliver the after-coming head in breech birth are _____ forceps.(basic)
- Arrange these principal stages of vacuum extraction in order.(intermediate)
- For forceps delivery, the fetal head should be engaged and the position of the vertex known with certainty.(basic)
- Which of the following is a mandatory prerequisite before proceeding with a forceps-assisted vaginal delivery?(intermediate)
- According to the supplied material, when is forceps delivery considered to have failed?(intermediate)
Want to practice more questions like this?
Join myBenkio free and practice past questions for your Nigerian university courses with AI explanations for every answer.
Start Practicing Free