Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-28T00:51:48.396Z Has data issue: false hasContentIssue false
  • English
  • Français

Visual evaluation of train-of-four and double burst stimulation, fade at various currents, using a rubber band

Published online by Cambridge University Press:  16 August 2006

Y. Saitoh ,
K. Nakazawa ,
K. Makita ,
H. Tanaka  and
H. Toyooka
Y. Saitoh
Affiliation:
Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University, Tokyo
K. Nakazawa
Affiliation:
Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University, Tokyo
K. Makita
Affiliation:
Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University, Tokyo
H. Tanaka
Affiliation:
Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University, Tokyo
H. Toyooka
Affiliation:
Department of Anaesthesiology, Toride Kyodo General Hospital, Ibaraki, Japan
Get access

Abstract

The sensitivity of train-of-four (TOF) or double burst stimulation3,3 (BBS3,3) was examined to detect fade by visual inspection, at varying stimulating currents, using the thumb of the investigated arm maintained abducted by the use of a rubber band. One-hundred adult patients were allocated randomly to (1) train-of-four-rubber band (TOF-RB), (2) train-of-four-control (TOF-control), (3) double burst stimulation-rubber band (DBS-RB), or (4) double burst stimulation-control (DBS-control) group. Each group contained 25 patients. The thumb of the investigated arm was kept abducted using a rubber band in the TOF-RB band and DBS-RB group and was free in the TOF-control and DBS-control. TOF stimuli were delivered in the TOF-RB and TOF-control groups, and DBS3,3 in the TOF-RB and TOF-control at 50, 30 and 20 mA. The probability of visual detection of TOF fade was the same in the TOF-RB and TOF-control groups. In contrast, when measured TOF ratio was 0.51–0.80, at the stimulating current of 50 or 30 mA, the likelihood of visual detection of fade in the DBS-RB group was significantly higher than in the DBS-control group (P < 0.05). With a TOF ratio of 0.61–0.70, in the DBS-RB group the probability of visual detection of fade at 50 or 30 mA was significantly higher than at 20mA (P < 0.05). This study suggests that when using a rubber band, fade in response to the DBS3,3 is detected by visual inspection more readily at a stimulating current of 50 or 30mA than without the rubber band.

Keywords

monitoringtrain-of-fourdouble burst stimulationneuromuscular relaxantvecuroniumrubber band
Type
Original Article
Information
European Journal of Anaesthesiology , Volume 14 , Issue 3 , May 1997 , pp. 327 - 332
Copyright
1997 European Society of Anaesthesiology

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)