Assessing velocity and directionality of uterine electrical activity for preterm birth prediction using EHG surface records

Jager, Franc (avtor), Geršak, Ksenija (avtor), Vouk, Paula (avtor), Pirnar, Žiga (avtor), Trojner-Bregar, Andreja (avtor), Lučovnik, Miha (avtor), Borovac, Ana (avtor)

The aim of the present study was to assess the capability of conduction velocity amplitudes and directions of propagation of electrohysterogram (EHG) waves to better distinguish between preterm and term EHG surface records. Using short-time cross-correlation between pairs of bipolar EHG signals (upper and lower, left and right), the conduction velocities and their directions were estimated using preterm and term EHG records of the publicly available Term–Preterm EHG DataSet with Tocogram (TPEHGT DS) and for different frequency bands below and above 1.0 Hz, where contractions and the influence of the maternal heart rate on the uterus, respectively, are expected. No significant or preferred continuous direction of propagation was found in any of the non-contraction (dummy) or contraction intervals; however, on average, a significantly lower percentage of velocity vectors was found in the vertical direction, and significantly higher in the horizontal direction, for preterm dummy intervals above 1.0 Hz. The newly defined features—the percentages of velocities in the vertical and horizontal directions, in combination with the sample entropy of the EHG signal recorded in the vertical direction, obtained from dummy intervals above 1.0 Hz—showed the highest classification accuracy of 86.8% (AUC = 90.3%) in distinguishing between preterm and term EHG records of the TPEHGT DS.

• Jezik: Angleški jezik
• Ključne besede: propagation of EHG waves, cross correlation, dummy intervals, contraction intervals, conduction velocity, preterm birth prediction, electrohysterogram, short-time cross-correlation, conduction velocity directionality
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FRI - Fakulteta za računalništvo in informatiko; MF - Medicinska fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 30 str.
• Številčenje: Vol. 20, iss. 24, art. 7328
• PID: 20.500.12556/RUL-134660
• UDK: 004:616.831-073.7-71
• ISSN pri članku: 1424-8220
• DOI: 10.3390/s20247328
• COBISS.SI-ID: 49646595
• Datum objave v RUL: 24.01.2022

Gradivo je del revije

• Naslov: Sensors
• Skrajšan naslov: Sensors
• Založnik: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 20.12.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: propagacija EHG valov, križna korelacija, prazni intervali, intervali s popadki, hitrost prevajanja, napovedovanje prezgodnjega poroda

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P3-0124
• Naslov: Metabolni in prirojeni dejavniki reproduktivnega zdravja, porod III