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Table 3 DMI derived intervals in milliseconds

From: Interatrial conduction disturbance in postoperative atrial fibrillation: a comparative study of P-wave dispersion and Doppler myocardial imaging in cardiac surgery

   Preoperative Postoperative Difference
Heart rate 68 ± 12 84 ± 9 17 ± 14
onset P wave to onset A’wave     
  RA base 41 ± 12 37 ± 11 -4 ± 15
mid 36 ± 11 32 ± 11 -4 ± 16
  IAS base 57 ± 14 56 ± 15 -1 ± 14
mid 53 ± 16 52 ± 16 -1 ± 18
  LA lat base 81 ± 15 82 ± 13 0 ± 18
mid 76 ± 16 76 ± 14 0 ± 21
  LA post base 70 ± 18 68 ± 13 -2 ± 18
mid 62 ± 15 63 ± 15 1 ± 20
onset P wave to peak A’wave     
  RA base 115 ± 22 85 ± 15 -30 ± 22
mid 108 ± 24 75 ± 15 -33 ± 27
  IAS base 126 ± 22 104 ± 17 -21 ± 22
mid 117 ± 22 101 ± 19 -16 ± 19
  LA lat base 137 ± 17 118 ± 18 -18 ± 21
mid 133 ± 18 108 ± 17 -25 ± 19
  LA post base 126 ± 21 111 ± 19 -15 ± 22
mid 120 ± 20 104 ± 20 -16 ± 23
Total electromechanical activity     
  RA base 186 ± 22 145 ± 26 -41 ± 31
mid 182 ± 21 130 ± 24 -52 ± 31
  IAS base 193 ± 23 165 ± 17 -28 ± 20
mid 186 ± 23 154 ± 21 -32 ± 24
  LA lat base 189 ± 19 171 ± 19 -18 ± 20
mid 188 ± 19 163 ± 27 -24 ± 22
  LA post base 182 ± 25 164 ± 23 -18 ± 23
  mid 173 ± 24 154 ± 18 -19 ± 23