Match the List – I and List – II and select the correct answer from the code given below:

List – I
A. Android Pelvis
B. Gynecoid Pelvis
C. Anthropoid Pelvis
D. Platypelloid Pelvis

List – II

1. Transversely Oval
2. Triangular
3. Round
4. Anterior-Posterior oval

1. A

   A-1, B-4, C-3, D-2

2. B

   A-2, B-3, C-4, D-1

3. C

   A-2, B-3, C-1, D-4

4. D

   A-1, B-2, C-3, D-4

Appeared in: UPPSC 2017

Explanation

• The Caldwell-Moloy classification categorizes the female pelvis into four main types based on the shape of the pelvic inlet, which has significant implications for labor and delivery.
• A Gynecoid pelvis, the most common type (about 50% of women), has a round inlet, making it the most suitable for vaginal birth.
• An Android pelvis features a triangular or heart-shaped inlet, similar to a male pelvis, and can present challenges during delivery.
• An Anthropoid pelvis is characterized by an anteroposteriorly oval inlet, where the front-to-back diameter is longer than the side-to-side diameter.
• A Platypelloid pelvis, the least common type, has a transversely oval (flat) inlet, which can make it difficult for the fetal head to engage.

Why Other Options Were Wrong

• Option A: This option incorrectly matches all the pelvic types with their shapes. For example, it pairs Android with Transversely Oval and Gynecoid with Anterior-Posterior oval, which is factually wrong.
• Option C: This option correctly matches Android (A-2) and Gynecoid (B-3) but incorrectly swaps the shapes for Anthropoid and Platypelloid. It pairs Anthropoid with Transversely Oval (C-1) and Platypelloid with Anterior-Posterior oval (D-4).
• Option D: This option incorrectly matches all the pelvic types with their shapes. For instance, it pairs Android with Transversely Oval and Gynecoid with Triangular.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Caldwell-Moloy classification of pelvic types and their corresponding inlet shapes as background academic context rather than a clinical decision trigger.
• Assessing pelvic type is crucial in obstetrics to anticipate the ease or difficulty of a vaginal birth. A Gynecoid pelvis is the most favorable, while Android and Platypelloid types can lead to labor dystocia (difficult labor).
• A nurse's understanding of pelvic shapes helps in interpreting the progress of labor, recognizing potential complications, and assisting the obstetric team in decision-making (e.g., need for forceps, vacuum, or Cesarean section).
• What if? If a woman with a known Platypelloid pelvis goes into labor, the nurse should be highly vigilant for failure to progress, as the fetal head may have difficulty engaging in the short anteroposterior diameter of the inlet, increasing the likelihood of a Cesarean delivery.

How to Approach the Question

• This is a 'Match the Following' question, a type of factual recall question.
• First, read both lists to understand the items to be matched: List I has pelvic types, and List II has their shapes.
• Recall the characteristics of each pelvic type from the Caldwell-Moloy classification.
• Start with the most common or distinct type. For example, 'Gynecoid' is the classic 'round' female pelvis. Match B with 3.
• Next, recall 'Android' is the male-like 'triangular' or heart-shaped pelvis. Match A with 2.
• With A-2 and B-3 established, check the options. Only one option, B, has this combination.

Concept Tested & Keywords

• Concept Tested: Caldwell-Moloy classification of pelvic types and their corresponding inlet shapes.
• Stem keywords: Android Pelvis, Gynecoid Pelvis, Anthropoid Pelvis, Platypelloid Pelvis, Transversely Oval, Triangular, Round, Anterior-Posterior oval
• Lead-in keywords: Match, select the correct answer

Question ID

QwVdgrpnIp8lOtWsmfA2uN

Copy ID

Reference Book

E6 Obstetrics Williams p. 16-33

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 38-46