Table 4

LV function data at baseline and 1 year stratified by LVEF

p Value
 (a) Prior PPM(b) New PPM(c) no PPM(d) LBBB/no PPM(a) vs (c)(b) vs (c)(c) vs (d)
Overall
 Baseline47.3±14.0 (576)53.5±12.1 (172)54.8±11.8 (1580)45.3±14.1 (157)<0.00010.17<0.0001
 1 year50.5±11.5 (333)55.4±9.9 (96)57.6±8.2 (1014)48.9±11.2 (100)<0.00010.01<0.0001
 ΔLVEF1.9±9.8 (328)1.0±10.9 (96)2.5±9.7 (997)6.1±10.6 (98)0.410.180.0005
LVEF >50%
 Baseline59.5±5.1 (277)60.1±4.9 (120)60.7±5.5 (1157)59.2±5.1 (63)0.060.250.03
 1 year57.3±8.0 (169)58.3±8.1 (69)60.1±6.0 (745)56.1±7.1 (35)<0.00010.020.0001
 ΔLVEF−2.1±7.6 (169)−2.3±8.2 (69)−0.7±6.6 (745)−1.3±6.4 (35)0.010.050.59
LVEF 35–50%
 Baseline42.9±5.4 (171)43.7±5.7 (35)43.8±4.9 (283)42.8±5.4 (56)0.070.840.14
 1 year47.2±9.1 (100)49.9±8.5 (16)51.3±8.5 (165)50.4±7.7 (31)0.00020.540.60
 ΔLVEF4.1±9.5 (100)4.8±10.6 (16)7.4±9.4 (165)7.0±6.2 (31)0.0060.300.83
LVEF <35%
 Baseline27.0±4.9 (128)27.0±5.0 (17)27.9±4.3 (140)25.9±5.3 (38)0.090.430.02
 1 year38.0±9.8 (64)45.0±12.0 (11)49.6±10.7 (104)40.2±11.5 (34)<0.00010.18<0.0001
 ΔLVEF10.0±9.6 (59)16.5±11.7 (11)19.7±10.9 (87)13.2±12.4 (32)<0.00010.360.006
  • %±SD (n).

  • Values between prior PPM and LBBB/no PPM were not significantly different.

  • LBBB, left bundle branch block; PPM, permanent pacemaker.