title: Haemodynamic improvement of older, previously replaced mechanical mitral valves by removal of the subvalvular pannus in redo cardiac surgery.
abstract: Patients requiring redo cardiac surgery for diseased heart valves other than mitral valves may show increased pressure gradients and reduced valve areas of previously placed mechanical mitral valves due to subvalvular pannus formation. We treated four women who had mechanical mitral valves inserted greater than or equal to 20 years earlier and who presented with circular pannus that protruded into the lower margin of the valve ring but did not impede leaflet motion. Pannus removal improved the haemodynamic function of the mitral valve.
authors: Department of Thoracic and Cardiovascular Surgery, Chonbuk National University Medical School, Jeonju, Chonbuk, Republic of Korea.|Research Institute of Clinical Medicine of Chonbuk National University and Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Chonbuk, Republic of Korea.
authors: Jong Hun
authors: JH
authors: Kim
authors: Department of Thoracic and Cardiovascular Surgery, Chonbuk National University Medical School, Jeonju, Chonbuk, Republic of Korea.
authors: Tae Youn
authors: TY
authors: Kim
authors: Department of Thoracic and Cardiovascular Surgery, Chonbuk National University Medical School, Jeonju, Chonbuk, Republic of Korea jobchoi@jbnu.ac.kr.|Research Institute of Clinical Medicine of Chonbuk National University and Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Chonbuk, Republic of Korea.
authors: Jong Bum
authors: JB
authors: Choi
authors: Department of Thoracic and Cardiovascular Surgery, Chonbuk National University Medical School, Jeonju, Chonbuk, Republic of Korea.|Research Institute of Clinical Medicine of Chonbuk National University and Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Chonbuk, Republic of Korea.
authors: Ja Hong
authors: JH
authors: Kuh
mesh_terms: D000368:Aged; D006348:Cardiac Surgical Procedures / Q000379:methods*; D005260:Female; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006439:Hemodynamics / Q000276:immunology*; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications / Q000503:physiopathology / Q000601:surgery*; D012086:Reoperation
keywords: Mitral valve; Subvalvular stenosis; Treatment