Ventricular dyssynchrony assessment using ultra-high frequency ECG technique

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JURAK Pavel HALAMEK Josef MELUZÍN Jaroslav PLESINGER Filip POSTRANECKA Tereza LIPOLDOVÁ Jolana NOVÁK Miroslav VONDRA Vlastimil VISCOR Ivo SOUKUP Ladislav KLIMES Petr VESELY Pept ŠUMBERA Josef ZEMAN Karel ASIRVATHAM Roshini S. TRI Jason ASIRVATHAM Samuel J. LEINVEBER Pavel

Druh Článek v odborném periodiku
Časopis / Zdroj Journal of interventional cardiac electrophysiology
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
Doi http://dx.doi.org/10.1007/s10840-017-0268-0
Obor Kardiovaskulární nemoci včetně kardiochirurgie
Klíčová slova Ventricular dyssynchrony; Cardiac resynchronization therapy; High-frequency electrocardiography; Left bundle branch block; Depolarization
Popis 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.