Mitral regurgitation associated with aortitis syndrome.

Three patients with mitral regurgitation (MR) associated with aortitis syndrome are presented. All had multiple lesions of the large sized arteries, calcification of the aorta, mild inflammatory findings, a chronic course, and congestive heart failure. MR was observed by ventriculography in all 3 patients. Case 1 had mitral valve prolapse and secondary systemic hypertension. Case 2 showed mildly thickened mitral valve leaflets and had moderate aortic regurgitation (AR). Case 3 had massive AR. The grade of MR was moderate in Cases 1 and 2, and massive in Case 3. The left ventricle was moderately dilated in Cases 1 and 2 but contracted sufficiently and symmetrically in all 3 patients. Other than the prolapse, no significant mitral valve deformity or left ventricular asynergy was evident by ventriculography. The incidence of MR was 3.1% of 128 patients with aortitis syndrome observed in our clinic. MR may be found in the late stage of aortitis syndrome. It may be caused by a mild valvular lesion related to aortitis syndrome and be exacerbated by increased hemodynamic loads such as those which occur in secondary hypertension and AR.