Interval-dependent potentiation of left ventricular contractility is preserved in patients with atrial fibrillation and depressed ejection fraction

Authors
Nagahama, Y Schick, EC Gaasch, WH
Citation
Y. Nagahama et al., Interval-dependent potentiation of left ventricular contractility is preserved in patients with atrial fibrillation and depressed ejection fraction, AM J CARD, 87(3), 2001, pp. 342
Citations number
15
Categorie Soggetti
Cardiovascular & Respiratory Systems","Cardiovascular & Hematology Research
Journal title
AMERICAN JOURNAL OF CARDIOLOGY
ISSN journal
00029149 → ACNP
Volume
87
Issue
3
Year of publication
2001
Database
ISI
SICI code
0002-9149(20010201)87:3<342:IPOLVC>2.0.ZU;2-V
Abstract
Echocardiographic techniques were used to measure left ventricular isovolum ic and ejection phase indexes of contractility in 54 patients with atrial f ibrillation, and the relations between cycle lengths and contractility were compared in patients with normal and depressed ejection fractions. Data in dicate that variations in contractility occur in a pattern that is consiste nt with postextrasystolic potentiation and that such interval-dependent pot entiation is preserved in patients with atrial fibrillation and depressed e jection fraction.