Home >> BJA: British Journal of Anaesthesia, Volume 82, Number 5

Equipment. Comparison of a new piezoelectric train-of-four neuromuscular monitor, the paragraph, and the relaxometer mechanomyograph

Authors: Dahaba A.1; Klobucar F.1; Rehak P.2; List W.1

Source: BJA: British Journal of Anaesthesia, Volume 82, Number 5, May 1999 , pp. 780-782(3)

Publisher: Oxford University Press

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Abstract:

The ParaGraph is a new device for monitoring neuromuscular function using a piezoelectric motion sensor. In 20 patients, monitoring of neuromuscular block produced by cisatracurium 0.1 mg kg-1 was compared using the ParaGraph and a Relaxometer 2 mechanomyograph. The ParaGraph was quick to set up, and easy to operate and interpret. There were no significant differences in the time to 100% depression of T1/T0, time to 25% recovery of T1/T0 or time to recovery of T1/T0 from 25% to 75%, measured by the two monitors. When the difference between the two monitors was plotted against the average of the two measurements, the limits of agreement for T1/T0 (-42.95, +53.98%) and the train-of-four ratio, T4/T1 (-0.28, +0.21) were too wide to allow the values given by the two monitors for individual patients to be used interchangeably.

Keywords: neuromuscular block; cisatracurium; monitoring; neuromuscular function; equipment; myographs

Document Type: Research article

Affiliations: 1: Department of Anaesthesiology and Intensive Care Medicine, LKH, Karl Franzens University, Auenbruggerplatz 29, A-8036 Graz, Austria 2: Department of Surgery, Biomedical Engineering and Computing Unit, Karl-Franzens University, Graz, Austria

Publication date: 1999-05-01

More about this publication?
  • Founded in 1923, one year after the first anaesthetic journal was published by the International Anaesthesia Research Society, the British Journal of Anaesthesia remains the oldest and largest independent journal of anaesthesia. It became the journal of The College of Anaesthetists in 1990. The College was granted a Royal Charter in 1992. Although there are educational links between the BJA and the College, the journal retains editorial independence.
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