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International Urogynecology Journal

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01-03-2020 | Original Article

Aging effects on pelvic floor support: a pilot study comparing young versus older nulliparous women

Authors: Carolyn W. Swenson, Mariana Masteling, John O. DeLancey, Lahari Nandikanti, Payton Schmidt, Luyun Chen

Published in: International Urogynecology Journal | Issue 3/2020

Abstract

Introduction and hypothesis

We sought to determine age-related changes to the pelvic floor in the absence of childbirth effects.

Methods

A case–control study was conducted from June 2017 to August 2018 comparing two groups of nulliparous women: <40 years old and ≥ 70 years old. Clinical evaluation included POP-Q, instrumented speculum testing, and handgrip strength. Dynamic 3D-stress MRI was performed on all women to obtain genital and levator hiatus (LH) lengths, LH area, and levator bowl volume. LH shape was quantified using a novel measure called the “V-U index.” Pubovisceral muscle (PVM) cross-sectional area (CSA) was also measured. Bivariate comparisons between the two groups were made for all variables. Effect sizes were calculated for MRI measurements.

Results

Twelve young and 9 older nulliparous women were included. Levator bowl volume at rest was 83% larger in older women (108.0 ± 34.5 cm³ vs 59.2 ± 19.3 cm³, p = 0.001, d = 1.82). MRI genital hiatus at rest was larger among the older group (2.7 ± 0.6 cm vs 3.5 ± 0.6 cm, p = 0.007, d = 1.34). V-U index, a measure of LH shape where 0 = “V” and 1 = “U,” differed between groups indicating a more “U”-like shape among older women (0.71 ± 0.23 vs 0.35 ± 0.18, p = 0.001, d = 1.72). Handgrip strength was lower in the older vs young group (23.2 ± 5.2 N vs 33.4 ± 5.2 N, p < 0.0001); however, the Kegel augmentation force and PVM CSA were similar (3.2 ± 1.1 N vs 3.3 ± 2.2 N, p = 0.89, and 0.8 ± 0.3 cm² vs 0.7 ± 0.2 cm², p = 0.23 respectively).

Conclusions

Levator bowl volume at rest was over 80% larger among older women, reflecting a generalized posterior distension with age.

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Title: Aging effects on pelvic floor support: a pilot study comparing young versus older nulliparous women
Authors: Carolyn W. Swenson
Mariana Masteling
John O. DeLancey
Lahari Nandikanti
Payton Schmidt
Luyun Chen
Publication date: 01-03-2020
Publisher: Springer International Publishing
Published in: International Urogynecology Journal / Issue 3/2020
Print ISSN: 0937-3462
Electronic ISSN: 1433-3023
DOI: https://doi.org/10.1007/s00192-019-04063-z

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Aging effects on pelvic floor support: a pilot study comparing young versus older nulliparous women

Abstract

Introduction and hypothesis

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Introduction and hypothesis

Methods

Results

Conclusions

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