A randomizált szívreszinkronizációs vizsgálatok eredményei és a bal-Tawara-szár-blokkos kamrai aktiváció újraértelmezése

Translated title of the contribution: Results of the randomized studies on cardiac resynchronization therapy and the reevaluation of the cardiac ventricular activation in left bundle branch block

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

If New York Heart Association Class II-IV heart failure is present, and ejection fraction â‰35%, electrocardiographic QRS width ≥ 120 ms in the presence of left bundle branch block, cardiac resynchronization therapy is indicated. Reevaluation of the data of cardiac resynchronization trials and electrophysiologic findings in left bundle branch block provided evidence that true left bundle branch block requires a QRS width of ≥130 ms (in woman) and ≥140 ms (in man). In true left bundle branch block, after the 40th ms of the QRS notched/slurred R waves are characteristic in minimum two of I, aVL, V1, V2, V5 and V6 leads, in addition to a ≥40 ms increase of the QRS complex, as compared to the original QRS complex. In contrast, slowly and continuously widened left bundle branch block like QRS patterns are mostly occur in left ventricular hypertrophy or in a metabolic/infiltrative disease. Orv. Hetil., 2013, 154, 688-693.

Translated title of the contributionResults of the randomized studies on cardiac resynchronization therapy and the reevaluation of the cardiac ventricular activation in left bundle branch block
Original languageHungarian
Pages (from-to)688-693
Number of pages6
JournalOrvosi hetilap
Volume154
Issue number18
DOIs
Publication statusPublished - May 1 2013

ASJC Scopus subject areas

  • Medicine(all)

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