FIGURE 2.

The QTc interval (A) and Tp-e interval (B) from prior induction until 60 minutes after CO₂ desufflation in the dexmedetomidine and control groups. Baseline = before induction of anesthesia in the supine position, Intu-10 min = 10 minutes after tracheal intubation, T-on = immediately after steep Trendelenburg position with CO₂ pneumoperitoneum, T-30 min, T-60 min, and T-90 min = 30, 60, and 90 minutes after steep Trendelenburg position with CO₂ pneumoperitoneum, T-off = immediately after a supine position with CO₂ desufflation, Surgery end = end of surgery, and T-off 60 min = 60 minutes after a supine position with CO₂ desufflation in the post-anesthetic care unit. Data are expressed as mean ± SD. ^∗P < 0.05, versus the control group (Bonferroni corrected), ^†P < 0.05, versus the baseline value for each group (Bonferroni corrected). CO₂ = carbon dioxide, QTc = heart rate-corrected QT, Tp-e = Tpeak–Tend, SD = standard deviation.