Assessment of the arterial tonometer (N-CAT) for the continuous blood pressure measurement in rapid atrial fibrillation

Abstract

The N-CAT is a newly developed arterial tonometer (TBP) 71 + 4,6, 0,99 -4-4,6 et 0,33 + 4,2 Measurement of arterial pressure, either intermittently or continuously, has been standard practice in operating rooms, recovery rooms and intensive care units for decades. If one wants accuracy and beat-to-beat measurement, then direct measurement of intraarterial pressure is used despite some inherent risks with the procedure. However, in those patients in whom there are no absolute indications for invasive arterial pressure, an accurate continuous indirect arterial pressure monitor would be preferable to an invasive technique. Recently, with the advent of microprocessor-based technology, it is possible to re-CAN J ANAESTH 1993 / 40:4 / pp 388-93

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

“…Although this device is no longer marketed, Finapres Medical Systems currently offers the Finometer and Portapres devices based on similar technology (Finapres Medical Systems BV, Arnhem, the Netherlands). The Colin N-CAT tonometer (Colin Corporation, Komaki, Japan) requires a cuff to calibrate the device and is therefore susceptible to inaccuracies from calibration, including errors associated with rhythm disturbances such as atrial fibrillation [13]. This device has been reported to be less accurate than the Finapres, particularly at lower mean blood pressure [14].…”

Effect of propofol on heart rate, arterial pressure and digital plethysmograph variability

“…The transducer sensing the largest arterial waveform is used for measurement and this waveform is calibrated against an oscillometric AP recording to derive AP. Arterial tonometry follows rapid changes in AP closely although measurements may drift after each recalibration [27]. The spectral power of rapid fluctuations in AP (e.g.…”

Accuracy and Precision of Continuous Noninvasive Arterial Pressure Monitoring Compared with Invasive Arterial Pressure

“…Thirteen articles [25][26][27][28][29][30][31][32][33][34][35][36][37] were excluded after full-text review for failure to meet the inclusion criteria or insufficient data for meta-analysis (appendix 3). The remaining 28 studies [8][9][10][11][12][13][14][15][16][17][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] were included in the systematic review (fig. 1).…”

“…Among the 28 studies, 20 [9][10][11][12][14][15][16][17]40,41,43,44,[46][47][48][49][52][53][54][55] were conducted in the operating room and 8 8,13,38,39,42,45,50,51 were conducted in the critical care setting. The CNAP device [10][11][12]14,15,41 was the most frequently evaluated, followed by T-line, 16,17,[38][39][40] Finapres, 50,[52][53][54] Nexfin, 8,9,13 Vasotrac, 43,44 NCAT, 49,51 and others. 42,[45][46][47]…”