The aim of this review is to provide basic knowledge and information useful for interpreting and assessing estimated CBP from a methodological point of view. To assess estimated CBP appropriately, the accuracy and features of the estimation method should be considered. R&S (4 pins Nelson, Erico, KSM, Midwest & Proweld Equipment). This symbol appearing throughout this manual means. And intra 2100 studco stiftlastechniek nelson stud welding division 7900 west. Operation maintenance manual nelson fastener systems a careful study of this. Because CBP cannot be directly measured noninvasively, it has to be estimated from peripheral pressure pulses. Central aortic blood pressure (CBP) is increasingly considered a better cardiovascular prognostic marker than conventional cuff brachial blood pressure.