Characterizing pelvic floor muscles activities using magnetomyography.
Characterizing pelvic floor muscles activities using magnetomyography.
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DOI：
10.1002/nau.23870
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发表时间：
2019-01
影响因子：
2
通讯作者：
Eswaran H
中科院分区：
文献类型：
--
作者：
Escalona-Vargas D;Oliphant S;Siegel ER;Eswaran H
采用磁肌描记术（MMG）描述未产妇肛提肌（LAM）活动的特征，并定义与LAM活动相关的MMG特征（有或无辅助肌肉贡献）。MMG数据收集8初产妇在休息和自愿LAM收缩（凯格尔）的强度不同。我们利用同步阴道测压和表面肌电图（sEMG）来评估副肌募集。根据是否存在辅助肌肉相互作用，对中度Kegel（MK）MMG试验进行亚选择。在MK时期计算振幅和频谱相关指标：均方根（RMS）振幅，相对于休息的百分比振幅，以及三个频带（低，中，高）的相对功率谱密度（rPSD）。从选定的Kegels和ROC分析的三元图表征rPSD，以确定临界点，以区分MK从相互作用的MK。获得了19个MMG记录。孤立和相互作用的MK时期之间的振幅和光谱参数显着不同。孤立MK的平均RMS和功率值分别为120.66±43.8fT和1.72±1.44（T2/Hz）*10−28。MK的振幅分别比基线活动高62%和49%，为孤立和相互作用的时代，分别。ROC曲线揭示了低频和中频带上的截止点，在分离的MK和相互作用的MK之间实现了完美的分离（ROC AUC =1.0）。我们的研究表明，MMG，一种新的生物磁技术，可以精确检测和表征正常女性盆底功能。结果表明，孤立的中度自主收缩的LAMs产生不同的MMG振幅和频谱特征相比，凯格尔涉及其他肌肉群的共同激活。
To characterize levator ani muscle (LAM) activity in nulligravidas using magnetomyography (MMG) and define MMG characteristics associated with LAM activity with and without accessory muscle contributions. MMG data was collected from eight nulligravidas during rest and voluntary LAM contractions (Kegels) of varying intensity. We utilized simultaneous vaginal manometry and surface electromyography (sEMG) to evaluate for accessory muscle recruitment. Moderate Kegel (MK) MMG trials were sub-selected based on the presence or absence of accessory muscle interaction. Amplitude and spectral-related indicators were calculated across MK epochs: root-mean square (RMS) amplitude, percentage amplitude relative to rest, and relative power spectrum density (rPSD) in three frequency bands (low, middle, high). Ternary diagram characterized rPSD from selected Kegels and ROC analysis was performed to identify cut-points to differentiate MKs from interacting MKs. Nineteen MMG recordings were obtained. Amplitude and spectral parameters were significantly different between isolated and interacting MK epochs. Mean RMS and power values of the isolated MK were, respectively, 120.66±43.8fT and 1.72±1.44 (T2/Hz)*10−28. Amplitudes of MK were 62% and 49% higher than baseline activities for the isolated and interacting epochs, respectively. ROC curves reveled cut-off points on low and middle frequency bands that achieved perfect separation (ROC-AUC=1.0) between isolated and interacting MK. Our study demonstrates that MMG, a novel biomagnetic technique, allows precise detection and characterization of normal female pelvic floor function. Results show that isolated moderate voluntary contraction of the LAMs produces distinct MMG amplitude and spectral characteristics compared with Kegels involving co-activation of other muscle groups.
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影响因子：
3
作者：
Eswaran, Hari;Escalona-Vargas, Diana;Lowery, Curtis L.
通讯作者：
Lowery, Curtis L.
影响因子：
4
作者：
COHEN, D;GIVLER, E
通讯作者：
GIVLER, E
影响因子：
3
作者：
Auchincloss, Cindy C.;McLean, Linda
通讯作者：
McLean, Linda
影响因子：
1.8
作者：
Allison, GT;Fujiwara, T
通讯作者：
Fujiwara, T
影响因子：
2
作者：
Keshwani, Nadia;McLean, Linda
通讯作者：
McLean, Linda