• Hajime Iwasaki, Kenichi Takahoko, Shigeaki Otomo, Tomoki Sasakawa, Takayuki Kunisawa, and Hiroshi Iwasaki.
• Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Asahikawa 078-8510.
• Masui. 2013 Aug 1;62(8):929-34.

BackgroundDifferences in the supramaximal current (STIM) and sensitivity of the transducer (SENS) after calibration using mode "CAL2" of the neuromuscular accelermyography (TOF-Watch SX, MSD, Japan) between type 2 diabetic and non-diabetic patients were evaluated undergoing general anesthesia.MethodsThirty four elective surgical patients (20-69 years) were enrolled in this study. We evaluated STIM, SENS, onset time of rocuronium (onset time), time from onset to first T1 appearance (T1 appearance) and time from T1 appearance to T2 appearance (T1-T2 time) by using TOF stimulation between type 2 diabetic patients and non-diabetic patients, retrospectively.ResultsThirteen diabetic patients (DM group) and twenty one non-diabetic patients (non-DM group) were included in this analysis. The values of SENS in DM group were significantly higher compared to non-DM patients (207 +/- 59 vs 113 +/- 44). However, STIM did not differ significantly between the two groups. Anesthesia in the 6 patients in DM group (SEV-DM group) and 14 patients in the non-DM group (SEV-non DM group) were maintained with sevoflurane. The other 14 patients were maintained with desflurane (DES-DM: n = 7 and DES-non DM: n = 7). A significant difference in the SENS values only was observed between the two SEV groups. On the other hand, the onset time, T1 appearance and T1-T2 time were significantly longer in DES-DM patients than those in the DES-non DM group.ConclusionsIt is demonstrated that the values in the SENS and the recovery speed (T1-T2 time) under measuring the degree of neuromuscular blockade by TOF stimulation were significantly higher in diabetic patients compared to non-diabetic patients. The present study provides additional confirmation of low neuromuscular response under peripheral electrical stimulation using TOF-Watch SX in type 2 diabetes patients, and attention should be paid to the evaluation of neuromuscular block using TOF-Watch SX in diabetic patients.

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