Correspondence  |   November 2017
Muscle Relaxation and Lower Airway Characteristics May Affect Tidal Volume during Pressure-controlled Ventilation
Author Notes
  • Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (X.W.). xrwang@hust.edu.cn
  • (Accepted for publication July 5, 2017.)
    (Accepted for publication July 5, 2017.)×
Article Information
Correspondence
Correspondence   |   November 2017
Muscle Relaxation and Lower Airway Characteristics May Affect Tidal Volume during Pressure-controlled Ventilation
Anesthesiology 11 2017, Vol.127, 896. doi:10.1097/ALN.0000000000001826
Anesthesiology 11 2017, Vol.127, 896. doi:10.1097/ALN.0000000000001826
With great interest, we read the article by Sato et al.,1  which reported the effect of sleep-disordered breathing on tidal volume with mask ventilation during anesthetic induction.
Additional details might better clarify this study and affect the interpretation of the results.
The exact location of the intravenous catheter (upper or lower extremities), which would affect the onset of rocuronium after injection, should be mentioned. Calibration of TOF-Watch is recommended before neuromuscular function monitoring during clinical research2 ; however, it was not adopted in this study. Although statistically insignificant, the uncalibrated train-of-four ratio was higher in the sleep-disordered breathing group. More information about the muscle paralysis in each group should have been provided.
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