Table 1 Comparison of external work efficiency between arrhythmic and regular beats under atrial fibrillation in six hearts

1 (relative)

0.045 (35%)

0.107 (83%)

0.120 (93%)

0.138 (107%)

0.129 (100%)

2 (relative)

0.068 (50%)

0.132 (98%)

0.145 (107%)

0.161 (119%)

0.135 (100%)

3 (relative)

0.065 (41%)

0.116 (73%)

0.125 (78%)

0.178 (111%)

0.160 (100%)

4 (relative)

0.037 (27%)

0.119 (87%)

0.145 (106%)

0.190 (139%)

0.137 (100%)

5 (relative)

0.036 (24%)

0.145 (96%)

0.155 (106%)

0.191 (127%)

0.151 (100%)

6 (relative)

0.081 (39%)

0.179 (87%)

0.205 (100%)

0.232 (113%)

0.206 (100%)

Efficiency mean

0.055

0.133

0.149

0.182

0.153

SD

0.019

0.026

0.030

0.032

0.028

Relative mean

36%

88%

99%

122%

100%

SD

11%

10%

12%

11%

0%

P for paired t

<0.0001

<0.05

>0.5 (ns)

<0.01

Control