In the POP-Q (Pelvic Organ Prolapse Quantification) system, point Ba is defined as:

• A The most distal (i.e., most dependent) position of any part of the anterior vaginal wall between point Aa and the anterior vaginal fornix ✓
• B The most distal position of the anterior vaginal wall between the hymen and point Aa
• C The posterior vaginal wall at 3 cm above the hymen
• D The vaginal apex measured from the hymen

Explanation

In the POP-Q system: Point Aa is the anterior vaginal wall at 3 cm above the hymen (range -3 to +3). Point Ba is the most distal position of any part of the anterior vaginal wall between Aa and the anterior vaginal fornix (or vaginal cuff in post-hysterectomy). Ba represents the position of the most prolapsed part of the anterior wall and varies from -3 (normal) to +TVL (total vaginal length). This quantifies anterior compartment (cystocele) prolapse.

Reference: Shaw's Textbook of Gynaecology, 17th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.