title: In vivo haemodynamic evaluation of the Hall-Kaster central flow prosthetic heart valve.
abstract: The first in vivo haemodynamic observations of the recently developed Hall-Kaster central flow prosthetic heart valve are reported. Haemodynamic evaluation of valve function was performed both in acute and chronic experiments following implantation of the Hall-Kaster prosthesis in the mitral position in dogs. These studies showed a low transvalvular pressure gradient, an effective opening angle of about 70 degrees and good diastolic flow through both the large and small orifices of the prosthesis. A slow rotational movement was depicted by the disc during opening and closure.
mesh_terms: D000818:Animals; D016275:Atrial Function; D001794:Blood Pressure; D002302:Cardiac Output; D004285:Dogs; D005069:Evaluation Studies as Topic; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D006439:Hemodynamics; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000601:surgery*; D011474:Prosthesis Design; D011651:Pulmonary Artery / Q000502:physiology; D011859:Radiography; D013927:Thrombosis / Q000209:etiology; D016276:Ventricular Function