The Accuracy of Finapres™ Noninvasive Mean Arterial Pressure Measurements in Anesthetized Patients

Accuracy and precision of blood pressure determination with the Finapres: an overview using re-sampling statistics

“…Gibbs 35 supported a cautious approach to the use of the Finapres as a substitute for IAP monitoring; the concern was with the occasional situation where large discrepancies would occur. Imholz 26 stressed the low within subject variability and the value of the method for following pressure changes within individuals; however, the Finapres did not guarantee a true assessment of the arterial pressure, to the AAMI standard.…”

Noninvasive Continuous Arterial Blood Pressure Monitoring with Nexfin®

“…[5][6][7][8][9][10] The ability to track changes in blood pressure was considered adequate 5 but concerns about accuracy or precision were raised. 11 The arterial pressure waveform changes gradually from the brachial artery to the finger arteries with a decrease in diastolic pressure and an occasional increase in systolic pressure because of the narrowing of the arteries. These effects explain the scatter that was sometimes seen with the Finapres 11,12 and which thus far limited the clinical application of finger cuff technology-based devices.…”

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

“…To date, only the Finapres monitor has seen extensive clinical assessments. [5][6][7][8][9] The N-CAT N-500 is a newly developed, noninvasive, to evaluate the accuracy and reliability of N-CAT N-500 monitor. This study found a lower systolic TBP (bias -1.71 + 4.6), and a higher diastolic TBP (bias 0.99 + 4.56) but no difference in average mean blood pressure.…”

“…If the duration and magnitude of the error are prolonged, this may lead to inappropriate intraoperative interventions with the potential for increased perioperative morbidity. In expressing the duration and magnitude of a clinically important error (+10 mmHg) or -t-20 mmHg) by the number of discrepancies per patient-hour, Gibbs et al 5 wanted to define another important characteristic for the evaluation of a new monitoring technique. Our average discrepancies for the mean arterial pressure were 2.4 and 0.4 per patient-hour +10 mmHg for intervals of one to five minutes and five minutes respectively.…”