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Table 2 Outcome variables in right unilateral and bifrontal treatments

From: Heart rate changes during electroconvulsive therapy

  RUL ECT (n= 64) BF ECT (n= 55) p value
  Mean ± SD Median (range) Mean ± SD Median (range)  
Peak HR (bpm) 137 ± 20 136 (88–187) 133 ± 20 134 (91–167) 0.296a
Trise (s) 12.5 ± 2.6 12.5 (6.3–17.8) 4.5 ± 3.1 3.5 (0.7–14.6) 0.000b
Tmax (s) 20.2 ± 8.8 19.1 (9.1–61.2) 21.3 ± 10.4 19.4 (0.0–60.1) 0.535b
Tbase (s) 55.8 ± 21.7 54.0 (13.3–107.2) 67.0 ± 25.9 62.1 (21.2–117.7) 0.026a
Tdec (s) 54.3 ± 21.9 54.7 (13.3–107.6) 62.1 ± 18.7 61.0 (22.1–95.8) 0.063b
HR at seizure end (bpm) 114 ± 27 115 (45–163) 119 ± 23 121 (50–163) 0.271a
HR 20 s after seizure (bpm) 78 ± 27 71 (28–156) 94 ± 22 96 (50–139) 0.002b
Final HR (bpm) 81 ± 14 81 (50–115) 82 ± 18 80 (49–125) 0.742a
Seizure duration (s) 45 ± 12 45 (13–78) 51 ± 13 51 (28–85) 0.013a
EEG seizure duration (s) 74 ± 26 70 (19–116) 55 ± 15 54 (33–83) 0.057a
  1. SD, standard deviation; range, minimum-maximum range; HR (bpm), heart rate (beats per minute). Time (s) is always measured from the end of stimulation with the exception of Trise.
  2. Trise, time from the onset of stimulation until the heart rate rises above baseline level; Tmax, time to peak heart rate; Tbase, time until the heart rate falls to baseline level; Tdec, time to the steepest heart rate decline during and after the seizure; Final HR, heart rate before transfer to the post-anesthesia care unit. at test; bMann–Whitney U test.