Balloon Valvuloplasty for Bioprosthetic Tricuspid Valve Stenosis

Abstract

A 73-year-old woman was admitted to our hospital for a scheduled percutaneous transcatheter balloon valvuloplasty of a stenotic tricuspid bioprosthesis. The patient had a history consistent with exertional dyspnea, abdominal distension, and edema of the lower extremities resistant to diuretic treatment over the previous few months. Forty-three years prior, she underwent aortic valve replacement with a Starr-Edwards mechanical prosthetic valve, with a mean pressure gradient of 25 mm Hg, for aortic stenosis of rheumatic etiology (Fig. 1, white arrow). Furthermore, three years after aortic valve replacement the patient underwent mitral valve replacement with a bileaflet mechanical valve for mitral stenosis which had a stenotic portion (mean pressure gradient 10 mm Hg) (Fig. 1, black arrow), and tricuspid valve replacement with a Carpentier-Edwards bioprosthesis for tricuspid stenosis (Fig. 1, yellow arrow). On admission, the patient was on atrial fibrillation and physical examination was compatible with right heart failure. Echocardiography demonstrated severe tricuspid stenosis and a mild regurgitation. The mean diastolic gradient across the tricuspid valve was 15.4 mm Hg (Fig. 2A and B). Therefore, we proceeded to percutaneous valvuloplasty of the tricuspid valve using fluoroscopy, under regional anesthesia and sedation, inflating a 15×40-mm Inoue balloon up to a pressure of 15 atm (Fig. 1B).1),2) According to hemodynamic measurements, the gradient across the bioprosthetic tricuspid valve dropped from 13.0 mm Hg before to 6.0 mm Hg after dilation (Fig. 3), and on repeat echocardiography the mean diastolic gradient was decreased to 7.2 mm Hg without worsening of the regurgitation (Fig. 2C and D). The patient's symptoms soon improved; however, two months later she experienced a massive pulmonary hemorrhage while on heparin and acenocoumarol within therapeutic range, and died after a long hospitalization in the intensive care unit. Fig. 1 Fig. 2 Fig. 3