An evaluation of the T-Line® Tensymeter continuous noninvasive blood pressure device during induced hypotension

P. Szmuk, E. Pivalizza, R. D. Warters, T. Ezri, R. Gebhard

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

A new continuous noninvasive blood pressure measurement device, the T-Line® Tensymeter TL100 (Tensys Medical Inc., San Diego, CA, USA) which enables avoidance of arterial cannulation has been developed. We compared the values obtained using the T-Line values to simultaneous arterial line measurements in patients undergoing general anaesthesia with induced hypotension. Twenty-five patients, aged 18-70 years, were studied. The T-Line and arterial line were positioned on the contralateral wrists. Intra-operative, real-time, blood pressure data were electronically captured and stored on a computer. Bland-Altman plots and 95% limits of agreement show that the majority of T-Line data points were within 5 mmHg of the arterial line measurements (67%) and agreement was within 15 mmHg in 94.6% or more of all measurements. There was virtually no distinguishable error over the course of surgery using the device. In conclusion, the T-Line measurements correlate with arterial measurements during anaesthesia in which there were periods of both normotensive and hypotensive anaesthesia. The T-Line Tensymeter represents a noninvasive alternative to an arterial line in cases when arterial blood sampling is not required.

Original languageEnglish (US)
Pages (from-to)307-312
Number of pages6
JournalAnaesthesia
Volume63
Issue number3
DOIs
StatePublished - Mar 2008

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

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