Similarity between the suprasystolic wideband external pulse wave and the first derivative of the intra-arterial pulse wave

Abstract

The suprasystolic WEP signals can be used to derive arterial pressure waves which, although not identical, track changes in the intra-arterial pulse wave induced by vasoactive drugs.

Non-invasive model-based estimation of aortic pulse pressure using suprasystolic brachial pressure waveforms

“…1. At the brachial end, a suprasystolic cuff is applied to almost completely occlude the artery (Payne et al, 2007). In this work, the external pulse is transduced directly from the suprasystolic cuff pressure.…”

Wideband External Pulse Recorded During Cuff Blood Pressure Measurement: A New Technique for Cardiovascular Assessment

“…The K1 signal is not affected by the local pulse wave reflection of the arm and hand and is more representative of a central arterial pressure pulse. Payne et al [ 21 ] have demonstrated an intrinsic relationship between the suprasystolic WEP pattern (i.e., K1) and the first derivative of an intra-arterial pressure wave. The K1 pattern has 2 identifiable systolic peaks separated by an identifiable trough.…”

Noninvasive assessment of arterial pressure

“…Preliminary data indicate that suprasystolic wideband external pulse may be monitored using a broad bandwidth piezoelectric sensor located over the brachial artery under the distal edge of a sphygmomanometer cuff [27]. The corresponding signal closely resembles the first derivative of intraarterial blood pressure both at baseline and following pharmacologically induced blood pressure increases and decreases in healthy volunteers [27].…”

“…The corresponding signal closely resembles the first derivative of intraarterial blood pressure both at baseline and following pharmacologically induced blood pressure increases and decreases in healthy volunteers [27]. Although this cheap noninvasive tool may be valuable in reconstructing blood pressure waveform, the theoretical background of suprasystolic wideband external pulse signals remains to be more extensively established.…”