The Uncorrected Defect: A Risk Stratification Model for Persistent Levator Ballooning Following Pelvic Organ Prolapse...

Area of Science:

• Urogynecology
• Pelvic Floor Disorders
• Surgical Outcomes

Background:

• Pelvic organ prolapse (POP) is a common condition affecting women.
• Surgical reconstruction aims to restore pelvic anatomy but may not fully resolve all associated defects.
• Levator hiatus ballooning, a persistent widening of the levator hiatus, is a potential indicator of surgical failure or recurrence.

Purpose of the Study:

• To develop and validate a multivariable prediction model.
• Identify patients at high risk for persistent levator hiatus ballooning 3 months after primary POP reconstructive surgery.

Main Methods:

• Prospective observational study of 140 women undergoing primary POP surgery.
• Transperineal ultrasound assessment preoperatively and at 3 months postoperatively.
• Multivariable binary logistic regression used to predict postoperative ballooning (defined as levator hiatus area ≥ 25 cm²).

Main Results:

• Surgery significantly reduced mean levator hiatus area (LHA) on straining (p < 0.001).
• However, ballooning persisted in 57.1% of patients.
• Independent predictors of persistent ballooning were age, body mass index, and preoperative resting LHA (AUC = 0.84).

Conclusions:

• Surgical correction of POP inadequately addresses levator ballooning in most cases.
• A validated predictive model using preoperative resting biometry can identify patients with this "uncorrected defect".
• Early identification of high-risk patients is vital for counseling and managing expectations regarding long-term outcomes.