TY - JOUR
T1 - Ventricular dyssynchrony assessment using ultra-high frequency ECG technique
AU - Jurak, Pavel
AU - Halamek, Josef
AU - Meluzin, Jaroslav
AU - Plesinger, Filip
AU - Postranecka, Tereza
AU - Lipoldova, Jolana
AU - Novak, Miroslav
AU - Vondra, Vlastimil
AU - Viscor, Ivo
AU - Soukup, Ladislav
AU - Klimes, Petr
AU - Vesely, Petr
AU - Sumbera, Josef
AU - Zeman, Karel
AU - Asirvatham, Roshini S.
AU - Tri, Jason
AU - Asirvatham, Samuel J.
AU - Leinveber, Pavel
N1 - Publisher Copyright:
© 2017, The Author(s).
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Purpose: The aim of this proof-of-concept study is to introduce new high-dynamic ECG technique with potential to detect temporal-spatial distribution of ventricular electrical depolarization and to assess the level of ventricular dyssynchrony. Methods: 5-kHz 12-lead ECG data was collected. The amplitude envelopes of the QRS were computed in an ultra-high frequency band of 500–1000 Hz and were averaged (UHFQRS). UHFQRS V lead maps were compiled, and numerical descriptor identifying ventricular dyssynchrony (UHFDYS) was detected. Results: An electrical UHFQRS maps describe the ventricular dyssynchrony distribution in resolution of milliseconds and correlate with strain rate results obtained by speckle tracking echocardiography. The effect of biventricular stimulation is demonstrated by the UHFQRS morphology and by the UHFDYS descriptor in selected examples. Conclusions: UHFQRS offers a new and simple technique for assessing electrical activation patterns in ventricular dyssynchrony with a temporal-spatial resolution that cannot be obtained by processing standard surface ECG. The main clinical potential of UHFQRS lies in the identification of differences in electrical activation among CRT candidates and detection of improvements in electrical synchrony in patients with biventricular pacing.
AB - Purpose: The aim of this proof-of-concept study is to introduce new high-dynamic ECG technique with potential to detect temporal-spatial distribution of ventricular electrical depolarization and to assess the level of ventricular dyssynchrony. Methods: 5-kHz 12-lead ECG data was collected. The amplitude envelopes of the QRS were computed in an ultra-high frequency band of 500–1000 Hz and were averaged (UHFQRS). UHFQRS V lead maps were compiled, and numerical descriptor identifying ventricular dyssynchrony (UHFDYS) was detected. Results: An electrical UHFQRS maps describe the ventricular dyssynchrony distribution in resolution of milliseconds and correlate with strain rate results obtained by speckle tracking echocardiography. The effect of biventricular stimulation is demonstrated by the UHFQRS morphology and by the UHFDYS descriptor in selected examples. Conclusions: UHFQRS offers a new and simple technique for assessing electrical activation patterns in ventricular dyssynchrony with a temporal-spatial resolution that cannot be obtained by processing standard surface ECG. The main clinical potential of UHFQRS lies in the identification of differences in electrical activation among CRT candidates and detection of improvements in electrical synchrony in patients with biventricular pacing.
KW - Cardiac resynchronization therapy
KW - Depolarization
KW - High-frequency electrocardiography
KW - Left bundle branch block
KW - Ventricular dyssynchrony
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U2 - 10.1007/s10840-017-0268-0
DO - 10.1007/s10840-017-0268-0
M3 - Article
C2 - 28695377
AN - SCOPUS:85022175221
SN - 1383-875X
VL - 49
SP - 245
EP - 254
JO - Journal of Interventional Cardiac Electrophysiology
JF - Journal of Interventional Cardiac Electrophysiology
IS - 3
ER -