At implantation Follow up (1-7 months) P Value
Pacing Parameters Threshold (Unipolar;0.5ms pw) R wave (mV) Pacing Impedance (ohms) 0.58 ± 0.22 V 17.35 ± 6.5 mV 773.6 ± 112.9 ohms 0.525 ± 0.07 V 15.65 ± 7.3 mV 663.1 ± 57.9 ohms 0.23 0.26 0.002
ECG – QRS duration (Pre and Post) 145.9 ± 27.7ms (Pre) 107.1 ± 9.5 ms (post) 0.00001
Echocardiographic Paraemters LV ejection Fraction Worsening of Tricuspid regurgitation 47.6 ± 11.2% – 55.9 ± 5.4% Nil
0.017