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Figure 12 Arm and Aortic Pressure Waves in Young and Old Subjects

Radial (left) and aortic (right) pressure waves in a 36-year-old man (top) and his 68-year-old father (bottom) calibrated to the same brachial cuff values of systolic and diastolic pressure. For the same brachial systolic value, difference in waveform was responsible for a 17-mm Hg lesser value of aortic pressure. Millar tonometer used for recording radial wave, SphygmoCor for analysis.