Non-invasive obstetric anal sphincter injury diagnostics using impedance spectroscopy

Katarzyna Borycka-Kiciak , Marcel Młyńczak , Adam Kiciak , Piotr Pietrzak , Adam Dziki


Obstetric anal sphincter injuries are the most common cause of fecal incontinence in women yet remain under-diagnosed. The aim of this study was to assess the suitability of impedance spectroscopy for diagnosing sphincter injuries arising during delivery. This was a prospective single-center study. 22 female patients were included: 10 with symptoms of sphincter dysfunction, in the early postpartum period, and 12 unaffected, in the distant period of more than 2 years after natural delivery. The presence, extent and severity of anal sphincters injury was assessed by measuring the sphincter parameters in physical examination, the degree of sphincter damage in endoanal ultrasound imaging and the sphincters function parameters in anorectal manometry. All measurements were used as references and compared with the outcomes from the impedance spectroscopy models. Impedance spectroscopy showed the highest precision (with mean accuracy of 83.9%) in relation to transanal ultrasonography. 74.1% of its results corresponded to the results of rectal physical examination and 76.7% - to those of anorectal manometry. The method showed the highest accuracy in the assessment of the sphincter’s parameters, both anatomically and functionally. New impedance spectroscopy techniques hold promise for detecting obstetric anal sphincter injuries.
Author Katarzyna Borycka-Kiciak - Department of General, Oncological and Gastrointestinal Surgery, Orlowski Hospital, Centre of Postgraduate Medical Education, Warsaw, Poland [Orlowski Hospital, Warsaw]
Katarzyna Borycka-Kiciak,,
, Marcel Młyńczak (FM / IMBE)
Marcel Młyńczak,,
- The Institute of Metrology and Biomedical Engineering
, Adam Kiciak - Orlowski Hospital, Warsaw [Orlowski Hospital, Warsaw]
Adam Kiciak,,
, Piotr Pietrzak - Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland [Szkola Glowna Gospodarstwa Wiejskiego]
Piotr Pietrzak,,
, Adam Dziki - Medical University of Lodz [Medical University of Lodz]
Adam Dziki,,
Journal seriesScientific Reports, ISSN 2045-2322
Issue year2019
Publication size in sheets0.5
ASJC Classification1000 Multidisciplinary
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 29-11-2019, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.401; WoS Impact Factor: 2018 = 4.011 (2) - 2018=4.525 (5)
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