title: Hemodynamic characteristics of the composite strut ball valve prostheses (Starr-Edwards track valves) in patients on anticoagulants.
abstract: The hemodynamic characteristics of the composite strut ball valve prostheses (Starr-Edwards Model 2400 aortic track valve and Model 6400 mitral track valve) were evaluated in anticoagulated patients. The peak systolic gradient (mean +/- SE) for the aortic valve in 16 patients was 18.1 +/- 3.9 mm Hg; the mean gradient was 17.0 +/- 2.7 mm Hg; the prosthetic valve area was 1.7 +/- 0.1 cm2; and the valve area index was 1.0 +/- 0.1 cm2/m2. In the 19 patients with the mitral valve, the mean diastolic gradient (mean +/- SE) was 5.2 +/- 0.7 mm Hg. The prosthetic valve area was 2.0 +/- 0.1 cm2, and the valve area index was 1.3 +/- 0.1 cm2/m2. These hemodynamic parameters are helpful in evaluating the catheterization findings in patients with composite strut prosthetic valves who are suspected of having prosthesis dysfunction. They also demonstrate the satisfactory in vivo hemodynamics in anticoagulated patients with these prostheses.
authors.affiliation: Division of Cardiology, University of Oregon Health Sciences Center, 3181 SW, Sam Jackson Park Road, Portland, Oregon 97201, USA.
authors.forename: J H
authors.initials: JH
authors.lastname: McAnulty
authors.forename: M
authors.initials: M
authors.lastname: Morton
authors.forename: S H
authors.initials: SH
authors.lastname: Rahimtoola
authors.forename: F E
authors.initials: FE
authors.lastname: Kloster
authors.forename: N
authors.initials: N
authors.lastname: Ahuja
authors.forename: A E
authors.initials: AE
authors.lastname: Starr
mesh_terms: D000328:Adult; D000368:Aged; D000925:Anticoagulants / Q000627:therapeutic use*; D006328:Cardiac Catheterization; D002302:Cardiac Output; D005260:Female; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design
chemical_list: D000925:Anticoagulants