The assessment of voluntary pelvic floor muscle contraction by three-dimensional transperineal ultrasonography

Abstract

Ultrasound parameters representing changes in levator hiatus opening dimensions and displacement of the bladder neck during pelvic floor muscle contraction may not be sensitive enough to distinguish the state of the pelvic floor muscle function.

Análise da distribuição multivetorial de cargas do assoalho pélvico feminino em diferentes populações

“…Nevertheless, US morphometric parameters may not be sensitive enough to discriminate subtle variations in PFM function, mainly because the measures of displacement are crucially dependent on tissue compliance or elasticity rather than only muscle strength or resistance (Chen et al 2011). In support of this hypothesis, a reduced PFM contractility detected by digital palpation was better related to levator ani muscle injuries (Guzmán-Rojas et al 2014), and to subjective and objective measures of pelvic floor organ descent (Oversand et al 2015) than any sonographic morphometric parameter of PFM function.…”

“…Also, as discussed previously, they are not the best option to discriminate subtle variations in PFM function, mainly because the measures of displacement are crucially dependent on tissue compliance or elasticity rather than just muscle strength or endurance (Chen et al 2011;Guzmán-Rojas et al 2014;Oversand et al 2015).…”

Parameters of two-dimensional perineal ultrasonography for evaluation of urinary incontinence after Radical Prostatectomy

“…During the ultrasound examination, all patients were asked to perform three voluntary maximal contraction efforts of the pelvic fl oor muscles for ten seconds and then relax. The greatest displacement was used as the basis for calculating the previously described measures (20). The data were analyzed using one--way ANOVA or Kruskal-Wallis ANOVA with statistical signifi cance defi ned at the 5% level (p<0.05).…”

Pelvic floor muscle displacement during voluntary and involuntary activation in continent and incontinent women: a systematic review

“…Studies have been included in spite of the existence of exclusion criteria such as prolapse [21][22][23], being male [24], anal incontinence [22] and urge incontinence [25,26] if the data had been reported separately between the subject groups. In that case the data of only continent and SUI patients were extracted according to the a priori established criteria.…”

“…Transperineal ultrasound (TPUS) measures the displacement of the BN with the lift component during maximal voluntary PFMC in the supine position between 0.68 cm and 0.80 cm [21] and 0.1 cm during gentle PFMC [39]. In halfsitting positions BN displacement during PFMC was between 0.62 cm [27] and 0.95 cm [34] in asymptomatic women, whereas Reddy et al [40] quantified 0.66 cm of BN motion in a mixed population in the standing position.…”