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Biomedical subjects

M T Villarroel

Publications and source records attributed to M T Villarroel.

9 recordsLinked to original sources
PubMed1989

[Traumatic tricuspid insufficiency].

Isolated tricuspid valve regurgitation is a rare finding after nonpenetrating chest trauma. The clinical course is usually benign and the time of surgery can be delayed for many years. Two-dimensional Doppler echocardiography is an essential procedure in the diagnosis of chordae tendineae or papillary muscle traumatic injury. We present two cases of traumatic tricuspid regurgitation with mild symptoms undiagnosed for sixteen and forty-three years, respectively.

Adult↗
PubMed1988

Color Doppler diagnosis of left ventricular pseudoaneurysm.

A patient underwent mitral valve replacement because of mitral insufficiency secondary to bacterial endocarditis. Early postoperatively, routine examination with "color Doppler" correctly identified the presence of a left ventricular pseudoaneurysm. To our knowledge, this is the first case of left ventricular pseudoaneurysm diagnosed by this new technique.

Echocardiography↗
PubMedDate not supplied

[Long-term (8 years) follow-up study of 204 bioprostheses].

From june 1974 to december 1975, 204 Hancock prosthetic valves were engrafted. The in-hospital mortality was 8.7%. The eight year survival rate was 78.9%. Of the 171 patients who had surgery, 121 reverted to functional class I, 123 had a mild or absent cardiomegaly. After 8 years of follow up 92% of the cases had not thromboembolic episodes. Ninety five percent of the patients with mitral valve replacement and 95% with aortic valve replacement were free of bacterial endocarditis. During the follow-up period; there were 49 valvular malfunctions, 16 of them mild that required no treatment. In 32 cases the alteration was severe and required surgical intervention. Thirty six prosthetic valves had to be removed; 22 of them had degenerative changes, 10 had bacterial endocarditis and in 4 the suture line broke down. After 8 years 77% of the valves were functioning well. The in-hospital mortality after the second valve replacement was 9.4%.

Adult↗