Systemic pressure does not directly affect pressure gradient and valve area estimates in aortic stenosis in vitro

European Heart Journal

Volumn 29, Issue 16, 2008, Pages 2049-2057

  Mascherbauer, Julia ^a,b   Fuchs, Christina ^a   Stoiber, Martin ^a   Schima, Heinrich ^a   Pernicka, Elisabeth ^a   Maurer, Gerald ^a   Baumgartner, Helmut ^a  

^a MEDICAL UNIVERSITY OF VIENNA   (Austria)

^b UNIVERSITY HOSPITAL MÜNSTER   (Germany)

Author keywords

Aortic stenosis; Haemodynamics; Hypertension

Indexed keywords

AORTA FLOW; AORTA PRESSURE; AORTA VALVE STENOSIS; ARTICLE; CARDIOPULMONARY HEMODYNAMICS; COMPUTATIONAL FLUID DYNAMICS; COMPUTER MODEL; COMPUTER SIMULATION; DOPPLER ECHOGRAPHY; HEART AFTERLOAD; HEART EJECTION FRACTION; IN VITRO STUDY; MULTIVARIATE ANALYSIS; PRIORITY JOURNAL;

AORTIC VALVE; AORTIC VALVE STENOSIS; BLOOD FLOW VELOCITY; BLOOD PRESSURE; ECHOCARDIOGRAPHY, DOPPLER, PULSED; HEMODYNAMICS; HUMANS; HYPERTENSION; MODELS, CARDIOVASCULAR;

EID: 49749100013     PISSN: 0195668X     EISSN: 15229645     Source Type: Journal    
DOI: 10.1093/eurheartj/ehn209     Document Type: Article

References (26)

1. Stewart BF, Siscovick D, Lind BK, Gardin JM, Gottdiener JS, Smith VE, Kitzman DW, Otto CM. Clinical factors associated with calcific aortic valve disease. J Am Coll Cardiol 1997;29:630-634.
2. Lindroos M, Kupari M, Heikkila J, Tilvis R. Prevalence of aortic valve abnormalities in the elderly: an echocardiographic study of a random population sample. J Am Coll Cardiol 1993;21:1220-1225.
3. Antonini-Canterin F, Huang G, Cervesato E, Faggiano, Pavan D, Piazza R, Nicolosi GL. Symptomatic aortic stenosis. Does systemic hypertension play an additional role? Hypertension 2003;41:1268-1272.
4. Ie E, Mook W, Shapiro AP. Systolic hypertension in critical aortic stenosis and the effect of valve replacement. J Hum Hypertens 1996;10:65-67.
5. Voelker W, Reul H, Nienhaus G, Stelzer T, Schmitz B, Steegers A, Karsch KR. Comparison of valve resistance, stroke work loss, and Gorlin valve area for quantification of aortic stenosis. An in vitro study in a pulsatile flow model. Circulation 1995;91:1196-1204.
6. Burwash IG, Thomas DD, Sadahiro M, Pearlman AS, Verrier ED, Thomas R, Kraft CD, Otto CM. Dependence of Gorlin formula and continuity equation valve area on transvalvular volume flow rate in valvular aortic stenosis. Circulation 1994;89:827-835.
7. Khot UN, Novaro GM, Popvic ZB, Mills RM, Thomas JD, Tuzcu EM, Hammer D, Nissen SE, Francis GS. Nitroprusside in critically ill patients with left ventricular dysfunction and aortic stenosis. N Engl J Med 2003;348:1756-1763.
8. Bermejo J, Garcia-Fernandez MA, Torrecilla EG, Bueno H, Moreno MM, San Roman D, Delcan JL. Effects of dobutamine on Doppler echocardiographic indexes of aortic stenosis. J Am Coll Cardiol 1996;28:1206-1213.
9. Otto CM, Pearlman AS, Kraft CD, Miyake-Hull CY, Burwash IG, Gardner CJ. Physiologic changes with maximal exercise in asymptomatic valvular aortic stenosis assessed by Doppler echocardiography. J Am Coll Cardiol 1992;20:1160-1167.
10. Casale PN, Palacios IF, Abascal VM, Harrell L, Davidoff R, Weyman AE, Fifer MA. Effects of dobutamine on Gorlin and continuity equation valve areas and valve resistance in valvular aortic stenosis. Am J Cardiol 1992;70:1175-1179.
11. Segal J, Lerner DJ, Miller DC, Mitchell RS, Alderman EA, Popp RL. When should Doppler determined valve area be better than the Gorlin formula? Variations in hydraulic constant in low flow states. J Am Coll Cardiol 1987;9:1294-1305.
12. Chambers JB, Springings DC, Cochrane T, Allen J, Morris R, Black MM, Jackson G. Continuity equation and Gorlin formula compared with directly observed orifice area in native and prosthetic aortic valves. Br Heart J 1992;67:193-199.
13. Flachskampf FA, Weyman AE, Guerrero JL, Thomas JD. Influence of orifice geometry and flow rate on effective valve area. An in vitro study. J Am Coll Cardiol 1990;15:1173-1180.
14. DeGroff CG, Shandas R, Valdes-Cruz L. Analysis of the effect of flow rate on the Doppler continuity equation for stenotic orifice area calculations: a numerical study. Circulation 1998;97:1597-1605.
15. Laskey WK, Kussmaul WG, Noordergraaf A. Valvular and systemic arterial hemodynamics in aortic valve stenosis. Circulation 1995;92:1473- 1478.
16. Jimenez-Candil J, Bermejo J, Yotti R, Cortina C, Moreno M, Cantalapiedra JL, Garcia-Fernandez MA. Effects of angiotensin converting enzyme inhibitors in hypertensive patients with aortic valve stenosis: a drug withdrawal study. Heart 2005;91:1311-1318.
17. Chockalingam A, Venkatesam S, Subramaniam T, Jagannathan V, Elangovan S, Alagesan R, Gnanavelu G, Dorairajan S, Krishna BP, Chockalingam V. Safety and efficacy of angiothesin-converting enzyme inhibitors in symptomatic severe aortic stenosis: symptomatic cardiac obstruction-pilot study of enalapril in aortic stenosis (SCOPE-AS). Am Heart J 2004;147:e19.
18. Little SH, Chan K-L, Burwash G. Impact of blood pressure on the Doppler echocardiographic assessment of severity of aortic stenosis. Heart 2007;93:848-855.
19. Kadem L, Dumesnil JG, Rieu R, Durand L-G, Garcia D, Pibarot P. Impact of systemic hypertension on the assessment of aortic stenosis. Heart 2005;91:354-361.
20. Razzolini R, Gerosa G, Leoni L, Casarotto D, Chioin R, Dalla-Volta S. Transaortic gradient is pressure-dependent in a pulsatile model of the circulation. J Heart Valve Dis 1999;8:279-283.
21. Schima H, Baumgartner H, Spitaler F, Kuhn P, Wolner E. A modular mock circulation for hydromechanical studies on valves, stenoses, vascular grafts and cardiac assist devices. Int J Artif Org 1992;15:417-421.
22. Niederberger J, Schima H, Maurer G, Baumgartner H. Importance of pressure recovery for the assessment of aortic stenosis by Doppler ultrasound: role of aortic size, aortic valve area and direction of the stenotic jet in vitro. Circulation 1996;94:1934-1940.
23. Burwash IG, Pearlman AS, Kraft CD, Miyake-Hull C, Healy NL, Otto CM. Flow dependence of measures of aortic stenosis severity during exercise. J Am Coll Cardiol 1994;24:1342-1350.
24. Gorlin R, Gorlin SG. Hydraulic formula for calculation of the area of the stenotic mitral valve, other cardiac valves, and central circulatory shunts. Am Heart J 1951;41:1.
25. Bland JM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1986;1:307-310.
26. Herbert Sigloch. Technische Fluidmechanik. Springer Verlag. 5. Auflage; 2005. p111.