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Surgical Approach for Aortic Coarctation Influences Arterial Compliance and Blood Pressure Control
Damien Kenny, MB, Jaimie W. Polson, PhD, Robin P. Martin, MB, Dirk G. Wilson, MB, Massimo Caputo, MD, John R. Cockcroft, MD, Julian F.R. Paton, PhD, Andrew R. Wolf, MD The Annals of Thoracic Surgery Volume 90, Issue 2, Pages (August 2010) DOI: /j.athoracsur Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions
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Fig 1 Arterial pulse wave velocity as calculated by the Vicorder. The arterial waveforms from the proximal and distal vessel are simultaneously recorded and digitized at a sampling rate of 1.8 ms and displayed on the attached computer screen. Points A and B are then identified using a second differential on the rising portion of the waveform to identify the upstroke of each waveform. These points are then cross-correlated to provide an accurate measure of the time delay. Pulse wave velocity is calculated by dividing the distance the pulse wave has travelled on the limb by this time delay. The Annals of Thoracic Surgery , DOI: ( /j.athoracsur ) Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions
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Fig 2 Relationship between right arm pulse wave velocity (PWV) and systolic blood pressure (SBP) in all subjects. Overall regression line (y = 10.12x , r2 = 0.45) is represented by thicker continuous line; control subjects are represented by triangles and a short dashed line (regression equation: y = 10.63x , r2 = 0.36); SFR is represented by circles and longer dashed line (regression equation: y = 8.02x , r2 = 0.51); and EEA is represented by squares and thin continuous line (regression equation: y = 9.48x , r2 = 0.30). The Annals of Thoracic Surgery , DOI: ( /j.athoracsur ) Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions
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