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At least 595 records · Page 33Linked to original sources
PubMed1986

The murmur of papillary muscle dysfunction in acute myocardial infarction: clinical features and prognostic implications.

The systolic murmur of papillary muscle dysfunction is a well-recognized feature of acute myocardial infarction (AMI), but no large prospective studies have determined its incidence, associated variables, and prognostic implications. Of 1653 patients who entered our data base with MI, 283 (17%) were classified as having a systolic murmur suggesting mitral regurgitation. At hospital discharge, there was a 5% incidence. There was a higher incidence of systolic murmur in non-Q wave AMI than in inferior or anterior Q wave MI (24% vs 13% and 15%, p less than 0.001). Advanced age, previous MI, and heart failure were all associated with systolic murmur (p less than 0.01). Persistent pain in the coronary care unit occurred more often in those with systolic murmur (45% vs 26%, p less than 0.0001). Systolic murmur was associated with an S3 and bibasilar rales (p less than 0.001) in the hospital; however, it was inversely related to peak creatine kinase and unrelated to heart failure or ejection fraction at discharge. Univariate predictors of mortality associated with systolic murmur included complex premature ventricular contractions at discharge and a non-Q wave location. Patients with systolic murmur had higher hospital and 1-year mortalities than those without systolic murmurs (p less than 0.01). When systolic murmur was present during hospitalization, the average time to reinfarction was 2.5 times earlier than when no systolic murmur was present (84 vs 214 days, p less than 0.0001).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1987

Two-dimensional echocardiography and color Doppler imaging in patients with systolic-diastolic murmurs.

Characteristics of color-coded Doppler imaging combined with two-dimensional and M-mode echocardiography in six patients with systolic-diastolic murmurs are reported. PDA, congenital absence of pulmonary valve leaflets, ventricular septal defect and aortic regurgitation, two ruptured aneurysms of sinus of Valsalva, and a coronary fistula were identified and findings were corroborated in cardiac catheterization and/or surgery. Color-coded Doppler imaging increases the information of the echocardiographic method in differential diagnosis of these entities by characterizing flow in cardiac chambers more completely and by facilitating detection of associated defects.

Adolescent↗
PubMed1988

Mitral stenosis: mitral dome excursion at M1 and the mitral opening snap--the concept of reciprocal heart sounds.

The dynamics of the delayed accentuated mitral component (M1) of the first heart sound and the MOS were studied in 11 patients with mitral stenosis of varying severity. Echophonocardiographic (M-mode and 2D) studies were performed with analysis of LA dimensions, dynamics, and mitral valve excursion at the time of M1 and MOS. LA area and length, mitral annular diameter, and mitral dome area (from anulus plane to fused valve tip) and length were measured at M1 and MOS. Significant dynamic increases in mitral dome area and length occurred from M1 to MOS, with less striking but consistent increases in LA area, LA length, and mitral annular diameter. Conversely, mitral dome area and length decreased significantly from MOS to M1, with less striking but consistent decreases in LA area, LA length, and mitral annular diameter. Frame-by-frame video tape analysis showed that dome movement was separate from anulus motion. Mitral dome descent into the left ventricle terminated at MOS and reversal of dome motion terminated at M1. The conformational and dimensional changes that terminated abruptly at MOS reversed and terminated abruptly in a reciprocal manner at the time of the delayed, accentuated M1. When considered in light of known hemodynamic, pressure pulse, and imaging correlates in mitral stenosis, these observations strengthen the hypothesis that the mechanisms involved in the production of M1 and MOS in mitral stenosis are paired or reciprocal in nature, and the delayed, accentuated M1 and the MOS of mitral stenosis are reciprocal cardiovascular sounds.

Adult↗
PubMed1966

The precordial honk.

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Cardiac Catheterization↗