Effects of Dynamic Cardiomyoplasty on Left Ventricular Systolic and Diastolic Performance in an Acute Canine Model

w) showed a signifi-cant increase with latissimus dorsi muscle (LDM) stimulation (postwrap non-stimulation 59.1 ± 6.3, postwrap stimulation 98.6 ± 9.7 erg cm−3· 103; P < 0.01), and the x-intercept (Vo) was unchanged; these were utilized as the indicators of left ventricular systolic function. The constant of pressure decay (tau) increased after LDM wrap (prewrap 45.8 ± 6.0, postwrap nonstimulation 69.3 ± 10.3, postwrap stimulation 72.3 ± 13.9 ms; P < 0.05), and the peak filling rate was unchanged after LDM wrap, which were utilized as the indicators of diastolic function. We concluded that classic dynamic cardiomyoplasty is effective in assisting systolic cardiac function, but may to some degree have a detrimental effect on the diastolic cardiac function.