Scolletta S, Herpain A, Romano SM, et al. - Researchers compared central arterial pressures measured from an intra-aortic catheter with peripheral radial arterial pressures and with central arterial pressures estimated from the peripheral pressure wave using a pressure recording analytical method (PRAM). Participants were 21 patients on whom digital subtraction cerebral angiography was being performed under local or general anesthesia and equipped with a radial arterial catheter. They positioned the second catheter in the ascending aorta for central pressure wave acquisition. For 90–180 s, simultaneous records of central (AO) and peripheral (RA) arterial waveforms were maintained using PRAM. Using a mathematical model obtained by multi-linear regression analysis, they reconstructed AO pressures from the RA trace, during an off-line analysis. For systolic, diastolic and mean pressures, the correlation coefficients between AO and RA were 0.86, 0.83 and 0.86, respectively, and the mean differences − 0.3 mmHg, 2.4 mmHg and 1.5 mmHg. Findings revealed the ability of PRAM in providing reliable estimates of central arterial pressure.