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Biomedical subjects

I Kronzon

Publications and source records attributed to I Kronzon.

At least 181 records · Page 10Linked to original sources
PubMed1988

The contribution of magnetic resonance imaging to the evaluation of intracardiac tumors diagnosed by echocardiography.

MAgnetic resonance (MR) imaging was performed in 14 patients with intracavitary cardiac tumors diagnosed by echocardiography. Except in the patients whose echocardiograms were diagnostic of atrial myxomas, this modality contributed important additional anatomic information regarding the tumor's relationship to the normal intracardiac structures and/or its extension to the adjacent vascular and mediastinal structures. The MR findings correlated extremely well with the findings in all 12 patients who underwent surgical exploration or postmortem examination, and in the other two patients, MR guided the decision to obtain transvenous biopsy samples of their right heart masses.

Adult↗
PubMed1988

Prevalence of hypertrophic cardiomyopathy and its association with mitral anular calcium in elderly patients.

We investigated the prevalence of hypertrophic cardiomyopathy (HC) and its association with mitral anular calcium (MAC) detected by Doppler echocardiography in 379 unselected elderly patients in a long-term health care facility. HC was present in 17 of 379 patients (4 percent). Of 17 patients with HC, ten (59 percent) had asymmetric septal hypertrophy, and seven (41 percent) had idiopathic hypertrophic subaortic stenosis with resting gradients of 20 to 110 mm Hg across the left ventricular outflow tract. The mean age of patients with HC was 85 +/- 7 years compared with 82 +/- 8 years in patients without HC (difference not significant). MAC was present in 13 of 17 patients (76 percent) with HC and in 176 of 362 (49 percent) without HC (p less than 0.025).

Aged↗
PubMed1988

Long-term results of mitral valve reconstruction with Carpentier techniques in 148 patients with mitral insufficiency.

There have been few relatively complete follow-up studies of long-term mitral valve function after Carpentier-type surgical reconstruction. Between January 1980 and May 1986, 148 patients underwent Carpentier reconstruction for mitral valve disease (43% degenerative and 30% rheumatic). Operative mortality was 5.4% overall (1.2% for isolated mitral reconstruction), and follow-up (mean, 26 months) was completed for all survivors. Five-year survival from late cardiac death was 90.0%, as was 5-year freedom from postreconstruction mitral valve replacement. Postreconstruction mitral replacement was needed in eight patients, in only five for failure of repair. Follow-up echocardiographic studies on 83.2% (104 of 125) of eligible patients showed 92.3% were free of significant (3+ or 4+) mitral regurgitation. Freedom from mitral valve replacement or recurrent severe (4+) insufficiency was 84.4% at 5 years overall, but was lower for the rheumatic type of mitral disease than for the degenerative type (71.6% vs. 88.3%). At 5 years, 95.2% of patients were free from thromboembolism without the necessity for long-term warfarin (Coumadin) therapy. At follow-up, 95.3% of survivors had improved to New York Heart Association Class I or II. The functional durability of mitral reconstruction and consistently high level of freedom from late endocarditis and thromboembolic and anticoagulant complications support the value of the Carpentier method of mitral reconstruction for mitral insufficiency, especially insufficiency due to degenerative disease.

Adolescent↗