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12. Assessment of small-diameter aortic mechanical prostheses: physiological relevance of the Doppler gradient, utility of flow augmentation, and limitations of orifice area estimation. Marcus RH, Heinrich RS, Bednarz J, Lupovitch S, Abruzzo J, Borok R, Vandenberg B, Kerber RE, Piccione W, Yoganathan AP, Lang RM. Circulation; 1998 Sep 01; 98(9):866-72. PubMed ID: 9738641 [Abstract] [Full Text] [Related]
13. Doppler echocardiographic assessment of the St. Jude Medical prosthetic valve in the aortic position using the continuity equation. Chafizadeh ER, Zoghbi WA. Circulation; 1991 Jan 01; 83(1):213-23. PubMed ID: 1984881 [Abstract] [Full Text] [Related]
14. Discrepancies between Doppler and catheter gradients in aortic prosthetic valves in vitro. A manifestation of localized gradients and pressure recovery. Baumgartner H, Khan S, DeRobertis M, Czer L, Maurer G. Circulation; 1990 Oct 01; 82(4):1467-75. PubMed ID: 2401075 [Abstract] [Full Text] [Related]
17. Continuity equation and Gorlin formula compared with directly observed orifice area in native and prosthetic aortic valves. Chambers JB, Sprigings DC, Cochrane T, Allen J, Morris R, Black MM, Jackson G. Br Heart J; 1992 Feb 01; 67(2):193-9. PubMed ID: 1540443 [Abstract] [Full Text] [Related]
18. Normal and abnormal prosthetic valve function as assessed by Doppler echocardiography. Panidis IP, Ross J, Mintz GS. J Am Coll Cardiol; 1986 Aug 01; 8(2):317-26. PubMed ID: 2942593 [Abstract] [Full Text] [Related]