Magnetomyographic assessment of pelvic floor muscles compared to ultrasound during pregnancy.

• Tác giả: Diana Escalona-Vargas, Hari Eswaran, Crystal Jones, Luis Mercado, Heather Moody, Sallie Oliphant, Eric R Siegel
• Ngôn ngữ: eng
• Ký hiệu phân loại: 627.12 Rivers and streams
• Thông tin xuất bản: United States : Physiological reports , 2025
• Bộ sưu tập: NCBI
• ID: 170491

Tóm tắt

Maternal birth injury contributes to future pelvic floor disorders, yet we possess an incomplete understanding of the levator ani muscles during pregnancy. We applied a noninvasive magnetomyography technique to characterize levator ani muscle activity in pregnancy with ultrasound and clinical exam. Magnetomyographic measures of levator ani muscle activity were collected using a noninvasive biomagnetic sensor from 53 pregnant women during rest and voluntary muscle contractions of varying intensity. Power spectral density was calculated using Welch's method to obtain the mean power of each Kegel exercise. Levator hiatus circumference was measured using ultrasound, and contraction strength was measured via the Brink scale. Magnetomyography data revealed a mean root mean square (RMS) rest of 39.7 ± 8.6 femtoTesla (fT) and Kegel of 52.9 ± 17.1 fT. Mean power spectral density (PSD) in log