Pelvic organ prolapse staging

Stage 0	No prolapse
Stage 0	Aa, Ba, Ap, Bp are -3 cm and C or D≤ -(tvl - 2) cm
Stage 1	Most distal portion of the prolapse -1 cm (above the level of hymen)
Stage 2	Most distal portion of the prolapse ≥ -1 cm but ≤ +1 cm (≤1 cm above or below the hymen)
Stage 3	Most distal portion of the prolapse > +1 cm but < +(tvl - 2) cm (beyond the hymen; protrudes no farther than 2 cm less than the total vaginal length)
Stage 4	Complete eversion; most distal portion of the prolapse ≥ + (tvl - 2) cm

Stage_of_pelvic_organ_prola.htm

Aa: Point A of anterior wall; Ba: point B of anterior wall; Ap: point A of posterior wall; Bp: point B of posterior wall; -: above the hymen; +: beyond the hymen; tvl: total vaginal length.

Reproduced with permission from Harvey, M-A, Versi, E. Urogynecology and pelvic floor dysfunction. In: Kistner's Gynecology and Women's Health, 7th ed, Ryan, KJ, Berkowitz, RS, Barbieri, RL, Dunaif, A (Eds), St. Louis, Mosby 1999. Copyright © 1999 Elsevier.

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Pelvic organ prolapse staging