<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Vrachatis, D.</style></author><author><style face="normal" font="default" size="100%">Papaioannou, T.G.</style></author><author><style face="normal" font="default" size="100%">Konstantopoulou, A.</style></author><author><style face="normal" font="default" size="100%">Nasothimiou, E.G.</style></author><author><style face="normal" font="default" size="100%">Millasseau, S.</style></author><author><style face="normal" font="default" size="100%">Blacher, J.</style></author><author><style face="normal" font="default" size="100%">Safar, M.E.</style></author><author><style face="normal" font="default" size="100%">Sfikakis, P.P.</style></author><author><style face="normal" font="default" size="100%">Stergiou, G.S.</style></author><author><style face="normal" font="default" size="100%">Protogerou, A.D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effect of supine versus sitting position on noninvasive assessment of aortic pressure waveform: a randomized cross-over study.</style></title><secondary-title><style face="normal" font="default" size="100%">J Hum Hypertens</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J Hum Hypertens</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Adult</style></keyword><keyword><style  face="normal" font="default" size="100%">Aorta</style></keyword><keyword><style  face="normal" font="default" size="100%">Blood Pressure</style></keyword><keyword><style  face="normal" font="default" size="100%">Brachial Artery</style></keyword><keyword><style  face="normal" font="default" size="100%">Cross-Over Studies</style></keyword><keyword><style  face="normal" font="default" size="100%">Female</style></keyword><keyword><style  face="normal" font="default" size="100%">Hemodynamics</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Manometry</style></keyword><keyword><style  face="normal" font="default" size="100%">Middle Aged</style></keyword><keyword><style  face="normal" font="default" size="100%">Posture</style></keyword><keyword><style  face="normal" font="default" size="100%">Pulse Wave Analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Sphygmomanometers</style></keyword><keyword><style  face="normal" font="default" size="100%">Supine Position</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2014 Apr</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">236-41</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Biomarkers derived noninvasively from the aortic blood pressure (BP) waveform provide information regarding cardiovascular (CV) risk independently of brachial BP (bBP). Although body position has significant impact on the assessment of bBP, its effect on aortic hemodynamics remains unknown. This study investigated the changes in both brachial and aortic hemodynamics, between the supine and sitting position. In this randomized cross-over study, the bBP and the aortic pressure waveform were assessed after a 5 min rest (sitting and supine in randomized order); aortic BP, pulse pressure (PP) amplification, augmentation index (AIx) and subendocardial viability index (SEVR) were assessed. Sixty-one subjects were examined (36 males, mean age 50±12 years). Mean BP did not differ between the sitting and supine position (110.8±13.7 vs 110.9±14.9, respectively, P=0.945). However, significant difference between the sitting and supine position in brachial PP (45.9±16.0 vs 52.6±15.6, respectively, P&lt;0.001), aortic PP (36.7±15.2 vs 43.1±13.9, P&lt;0.001), PP amplification (1.28±0.1 vs 1.23±0.1, P&lt;0.001), AIx (26.9±11.9 vs 31.1±10.2, P&lt;0.001) and SEVR (179.6±25.7 vs 161.2±25.8, P&lt;0.001) were found. Review of the literature identified underestimation of the role of body position on aortic hemodynamics. In conclusion, increased PP in both the aorta and brachial artery were found in the supine compared to the sitting position. Reduced PP amplification and SEVR were further observed in the supine position, due to increased pressure wave reflections (AIx).</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/24152821?dopt=Abstract</style></custom1></record></records></xml>