Abstract
Hypertension is a significant worldwide health issue. Continuous blood pressure monitoring is important for early detection of hypertension, and for improving treatment efficacy and compliance. Pulse wave velocity (PWV) has the potential to allow for a continuous blood pressure monitoring device; however published studies demonstrate significant variability in this correlation. In a recently presented physics-based mathematical model of PWV, flow velocity is additive to the classic pressure wave as estimated by arterial material properties, suggesting flow velocity correction may be important for cuff-less non-invasive blood pressure measures. The present study examined the impact of systolic flow correction of a measured PWV on blood pressure prediction accuracy using data from two published in vivo studies. Both studies examined the relationship between PWV and blood pressure under pharmacological manipulation, one in mongrel dogs and the other in healthy adult males. Systolic flow correction of the measured PWV improves the R2 correlation to blood pressure from 0.51 to 0.75 for the mongrel dog study, and 0.05 to 0.70 for the human subjects study. The results support the hypothesis that systolic flow correction is an essential element of non-invasive, cuff-less blood pressure estimation based on PWV measures.
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Blacher, J., R. Asmar, S. Djane, G. M. London, and M. E. Safar. Aortic pulse wave velcity as a marker of cardiovascular risk in hypertensive patients. Hypertension 33:1111–1117, 1999.
Blacher, J., A. P. Guerin, B. Pannier, et al. Impact of aortic stiffness on survival in end stage renal disease. Circulation 99(18):2434–2439, 1999.
Bramwell, J. C., and A. V. Hill. The formation of breakers in the transmission of pulse wave. J. Physiol. 57(lxxiii):73–74, 1923.
Burgess, C. The hemodynamic effects of aminophylline and salbutamol alone and in combination. Clin. Pharm. Ther. 40(5):550–553, 1986.
Calhoun, D. A., D. Jones, et al. Resistant hypertension: diagnosis, evaluation, and treatment. A scientific statement from the American Heart Association Professional Education Committee of the Council for High Blood Pressure Research. Hypertension 51(1403):2008, 2008.
Chen, Y., W. Changyun, T. Guocai, B. Min, and G. Li. Continuous and noninvasive blood pressure measurement: A novel modeling methodology of the relationship between blood pressure and pulse wave velocity. Ann. Biomed. Eng. 37(11):2222–2233, 2009.
Chen, W., T. Kobayashi, S. Ichikawa, Y. Takeuchi, and T. Togawa. Continuous estimation of systolic blood pressure using the pulse arrival time and intermittent calibration. Med. Biol. Eng. Comput. 38:569–574, 2000.
Guidelines (JSH 2009). Measurement and clinical evaluation of blood pressure. Hypertens. Res. 2009 32:11–23, 2009.
Hamzaoui, O., J. F. Georger, X. Monnet, H. Ksouri, J. Maizel, C. Richard, and J. L. Teboul. Early administration of norepeniphrine increases cardiac preload and cardiac output in septic patients with life threatening hypotension. Crit. Care 14(R142):1–9, 2010.
Hardung, V. Propagation of pulse waves in Visco-elastic tubings. Handbook of Physiology 2(1):107–135, 1962.
He, D., D. E. S. Winokur, and C. G. Sodini. A continuous, wearable, and wireless heart rate monitor using head ballistocardiogram and head electrocardiogram, in 33rd Ann. Conf. IEEE EMBS, 2011
Hill, A. V., and J. C. Bramwell. The velocity of the pulse wave in man. Proc. R. Soc. Exp. Biol. Med. 93:298–306, 1922.
Histand, M., and M. Anliker. Influence of flow and pressure on wave propagation in the canine aorta. Circ. Res. 32:524–529, 1973.
Hsieh, K. S., C. K. Chang, K. C. Chang, and H. I. Chen. Effect of loading conditions on peak aortic flow velocity and its maximal acceleration. Proc. Natl. Sci. 15(3):165–170, 1991.
Hughes, D., F. Babbs, and C. Geddes. Measurement of Young’s modulus of elasticity of the canine aorta with ultrasound. Ultrasound Imaging 1(4):356–367, 1979.
Kim, E. J., C. G. Park, J. D. Park, S. Y. Suh, C. U. Choi, J. W. Kim, S. H. Kim, H. E. Lim, S. W. Rha, H. S. Seo, and D. J. Oh. Relationship between blood pressure parameters and pulse wave velocity in normotensive and hypertensive subjects: Invasive study. J. Hum. Hypertens. 21:141–148, 2007.
Klabunde, R. Cardiovascular Physiology Concepts (2nd ed.). Philadelphia: Lippincott Williams & Wilkins, 2011.
Kobayashi, T., S. Ichikawa, Y. Takeuchi, T. Togawa, and W. Chen. Continuous estimation of systolic blood pressure using the pulse arrival time and intermittent calibration. Med. Biol. Eng. Comput. 38:569–574, 2000.
Kortweg, J. D. Uber die Fortpflanzungsgeschwindigkeit des Schalles in elastischen Rorren. Ann. Phys. Und Chem. Neue Folge 5:225, 1878.
Liberson, A. S., J. S. Lillie, and D. A. Borkholder. Numerical solution for the boussinesq type models with application to arterial flow. JFFHMT 1:9–15, 2014.
Lieber, A., S. Millasseau, L. Bourhis, J. Blacher, A. Protogerou, B. Levy, and M. Safar. Aortic wave reflection in men and women. Am. J. Physiol. Heart Circ. 299:H235–H242, 2010.
Lillie J.S., A.S. Liberson, D.A. Borkholder, “Pulse wave velocity prediction in multi-layer thick wall arterial segments,” in FFHMT, Ottawa, 2015, Paper No. 163.
Lillie, J. S., A. S. Liberson, D. Mix, K. Schwartz, A. Chandra, D. B. Phillips, S. W. Day, and D. A. Borkholder. Pulse wave velocity prediction and compliance assessment in elastic arterial segments. Cardiovasc. Eng. Technol. 6(1):49–58, 2014.
Nurnberger, J., A. Saez, S. Dammer, A. Mitchell, R. Wenzel, T. Philipp, and R. Schafers. Left ventricular ejection time: A potential determinant of pulse wave velocity in young, healthy males. J. Hypertens. 21(11):2125–2132, 2003.
Ochiai, R., J. Takeda, H. Hosaka, Y. Sugo, R. Tanaka, and T. Soma. The relationship between modified pulse wave transit time and cardiovascular changes in isoflourane anesthetized dogs. J. Clin. Monit. 15:493–501, 1999.
O’Rourke, M. McDonald’s blood flow in arteries: Theoretical, experimental and clinical principles (5th ed.). USA: Oxford University Press, 2005.
O’Rourke, M., and J. Seward. Central arterial pressure and arterial pressure pulse: New views entering the second century after Korotkov. Mayo Clin. Proc. 81(8):1057–1068, 2006.
Ottesen, J. T., and M. Danielsen. Mathematical Modeling in Medicine. The Netherlands: IOS Press, 2000.
Payne, R. A., C. Symeonides, D. Webb, and S. Maxwell. Pulse transit time measured from the ECG: An unreliable marker of beat-to-beat blood pressure. J. Appl. Physiol. 100:136–141, 2006.
Pedley, T. J. The fluid mechanics of large blood vessels. Cambridge: Cambridge University Press, 2008.
Poole-Wilson, P. A., G. Lewis, T. Angerpointer, A. D. Malcom, and B. T. Williams. Haemodynamic effects of salbutamol and nitroprusside after cardiac surgery. Br. Heart J. 39:721–725, 1977.
Salvi, P., C. Palombo, G. Salvl, C. Labat, G. Parati, and A. Benetos. Left ventricular ejection time, not heart rate, is an independent correlate of aortic pulse wave velocity. Sept: J. Appl. Physiol., 2013.
Smulyan, H., S. Mookherjee, and R. A. Warner. The effect of nitroglycerin on forearm arterial distensibility. Circulation 76(6):1264–1269, 1886.
Tanaka, H., M. Munakata, et al. Comparison between carotid-femoral and brachial-ankle pulse wave velocity as measures of arterial stiffness. J. Hypertens. 27(10):2022–2027, 2009.
World Health Organization. A global brief on hypertension, silent killer, global public health crisis. Document number: WHO/DCO/WHD/2013.2 2013. Geneva: WHO, 2013
Yu, W. C., S. Y. Chuang, Y. P. Lin, and C. H. Chen. Brachial-ankle vs carotid-femoral pulse wave velocity as a determinant of cardiovascular structure and function. J. Hum. Hypertens. 22(1):24–31, 2008.
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This research was supported by a grant from Google.
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Jeffrey S. Lillie, Alexander S. Liberson, and David A. Borkholder declare that they have no conflict of interest.
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Lillie, J.S., Liberson, A.S. & Borkholder, D.A. Improved Blood Pressure Prediction Using Systolic Flow Correction of Pulse Wave Velocity. Cardiovasc Eng Tech 7, 439–447 (2016). https://doi.org/10.1007/s13239-016-0281-y
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DOI: https://doi.org/10.1007/s13239-016-0281-y