caa a22 4500 445373466 CHVBK 20180317142955.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00540-011-1129-0 doi (NATIONALLICENCE)springer-10.1007/s00540-011-1129-0 Onset of rocuronium-induced neuromuscular block evaluated subjectively and accerelomyographically at the masseter muscle [Elektronische Daten] [Osamu Kitajima, Takahiro Suzuki, Naoko Fukano, Shigeru Saeki, Setsuro Ogawa, Yoshikazu Noda] Purpose: The main aim of this study was to compare the onset times of rocuronium evaluated subjectively and by acceleromyography at the masseter muscle (MM). Methods: Forty female patients were sequentially enrolled in this study. In the first 20 patients, neuromuscular block was evaluated subjectively. After induction of anesthesia with fentanyl and propofol, both the left masseter and ulnar nerves were stimulated in 2-Hz train-of-four (TOF) mode using peripheral nerve stimulators. Contractions of the MM were felt with an anesthesiologist's left hand holding an anesthesia facemask; those of the adductor pollicis (APM) were visually observed. All the patients received a bolus of rocuronium, 0.6mg/kg. Onset times after rocuronium were defined as the duration until the contractions became impalpable at the MM or invisible at the APM. At the time contraction of the MM had not been felt, intubating conditions were assessed. In the next 20 patients, contractions of the MM and the APM were concurrently quantified using acceleromyography after induction of anesthesia and laryngeal mask insertion. Following 0.6mg/kg rocuronium, onset of the action was recorded. Results: Onset of the action of rocuronium at the MM evaluated subjectively [mean (SD), 70.3 (17.7)s] was similar to that monitored acceleromyographically [73.3 (27.6)s, P>0.05], and significantly shorter than that at the APM acceleromyographically [111.0 (34.8)s, P=0.016]. Intubating conditions of 20 patients were graded either excellent or good. Conclusion: Subjective evaluation of contractions of the MM by an anesthesiologist's hand may be reliable to determine faster timing for safe tracheal intubation. Japanese Society of Anesthesiologists, 2011 Masseter muscle nationallicence Rocuronium nationallicence Neuromuscular block nationallicence Tracheal intubation nationallicence Kitajima Osamu Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut Suzuki Takahiro Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut Fukano Naoko Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut Saeki Shigeru Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut Ogawa Setsuro Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut Noda Yoshikazu Department of Anesthesia, Social Insurance Sagamino Hospital, 1-2-30 Futinobe, 229-0006, Sagamihara, Kanagawa, Japan aut Journal of Anesthesia Springer Japan 25/3(2011-06-01), 376-379 0913-8668 25:3<376 2011 25 540 https://doi.org/10.1007/s00540-011-1129-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00540-011-1129-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kitajima Osamu Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut NATIONALLICENCE 700 1- Suzuki Takahiro Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut NATIONALLICENCE 700 1- Fukano Naoko Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut NATIONALLICENCE 700 1- Saeki Shigeru Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut NATIONALLICENCE 700 1- Ogawa Setsuro Department of Anesthesiology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyoda-Ku, 101-8309, Tokyo, Japan aut NATIONALLICENCE 700 1- Noda Yoshikazu Department of Anesthesia, Social Insurance Sagamino Hospital, 1-2-30 Futinobe, 229-0006, Sagamihara, Kanagawa, Japan aut NATIONALLICENCE 773 0- Journal of Anesthesia Springer Japan 25/3(2011-06-01), 376-379 0913-8668 25:3<376 2011 25 540 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer