Table. ECG, Echocardiography, and Hemodynamic Parameters.

	Control	DHF	CRT
ECG, ms
Sinus rhythm
RR	608±115	438±34*	428±34*
QT	278±31	286±43	300±15*
QTc	359±26	434±64*	467±38*
QRS	47±6	103±21*	102±10*
Pacing
RR	. . .	314±14	308±18
QT	. . .	280±23	239±39
QTc	. . .	489±35	429±58†
QRS	. . .	112±16	64±6†
Echocardiography
DI, ms	30±5	74±25*	29±23†
LVEDV, mL	52±6	87±18*	93±20*
LVESV, mL	17±4	64±17*	63±15*
SV, %	35±6	23±12*	29±15
LVEF, %	67±7	25±12*	30±11*
Hemodynamics
HR, bpm	105±26	151±42*	150±12*
LVEDP, mm Hg	6±5	35±8*	34±10*
LVESP, mm Hg	142±27	103±19*	101±10*
dP/dtmax mm Hg/s	1900±467	831±246*	846±133*

QTc indicates corrected QT; DI, dyssynchrony index; LVEDV, LV end-diastolic volume; LVESV, LV end-systolic volume; SV, stroke volume; LVEF, LV ejection fraction; HR, heart rate; LVEDP, LV end-diastolic pressure; and LVESP, LV end-systolic pressure.

Values are mean±SD.

^*P<0.05 vs control

^†P<0.05 vs DHF.