Skip to main content
. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Circ Heart Fail. 2014 May 19;7(4):612–618. doi: 10.1161/CIRCHEARTFAILURE.113.000849

Table 2.

Isometric Contractility of Left Ventricular Trabecular Muscles at Lmax

NF LVH Failing F+LVAD LVAD Core LVAD Tx
n (muscles/hearts) 26 / 10 9 / 3 39 / 15 53 / 14 27 / 8 36 / 8
RT (g/mm2) 2.54 ± 1.56 1.76 ± 1.05 2.88 ± 1.34 3.03 ± 1.36 3.59 ± 1.13 3.20 ± 1.64
DT (g/mm2) 1.19 ± 0.59 1.73 ± 0.79 1.17 ± 0.63 1.23 ± 0.48 1.70 ± 0.45 1.17 ± 0.52
TPT (msec) 176.5 ± 25.2 169.3 ± 10.1 162.5 ± 30.9 197.5 ± 18.2 174.3 ± 18.7 198.4 ± 20.3
THR (msec) 135.1 ± 12.6 141.3 ± 8.1 147.5 ± 15.6 134.4 ± 11.3 131.4 ± 19.4 134.5 ± 11.2
+dT/dt (g/sec/mm2) 9.22 ± 3.51 13.80 ± 5.79 11.09 ± 5.31 8.60 ± 2.93 13.96 ± 3.66 8.24 ± 3.25
−dT/dt (g/sec/mm2) 7.90 ± 3.15 11.61 ± 4.50 9.00 ± 4.41 7.51 ± 2.93 10.63 ± 2.47 7.19 ± 2.95

Abbreviations: n = number of muscles / number of hearts, RT = resting tension, DT = developed tension, TPT = time to peak tension, THR = time to half relaxation, +dT/dt = maximum rate of tension rise, −dT/dt = maximum rate of tension fall.

Data expressed as mean ± SD.