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  • Title: [Accuracy of clinical findings in patients with disturbed myocardial function in acute myocardial infarction].
    Author: Bertel O, Baitsch G, Steiner AM, Burkart F, Ritz R.
    Journal: Schweiz Med Wochenschr; 1980 Nov 08; 110(45):1669-71. PubMed ID: 7280601.
    Abstract:
    The relationship between clinical findings and invasively measured hemodynamic data was investigated in a prospective trial of 70 patients with acute myocardial infarction. In 26 out of 27 consecutive patients without clinical signs of disturbed myocardial function, normal hemodynamic values were also found invasively. In 43 patients, depressed myocardial function was diagnosed on the basis of the clinical findings. These findings were verified in 38 patients (88%) by means of cardiac catheterization; 5 patients (12%) had normal hemodynamic values. In 26 patients with clinical signs of congestive heart failure, an attempt was made to identify non-invasively those with a low output (cardiac index less than 2/min/m2). Only 3 of the 6 patients with a low output could be identified by clinical examination alone. In one patient a low output was clinically diagnosed despite normal cardiac function measured invasively. In 16 patients, 48 subsequent clinical examinations were performed during treatment of congestive heart failure to identify either persistent elevated left ventricular filling pressure or low output; 15 (31%) were found to be incorrect when compared with the cardiac catheterization data. Patients with acute myocardial infarction and normal ventricular function can be identified with high accuracy by means of clinical examination alone. The clinical diagnosis of congestive heart failure was incorrect in 12% of the patients. A low output state in acute myocardial infarction is often overlooked in clinical examination alone. Of the clinical examinations on patients during therapy, 30% were incorrect. Invasive hemodynamic monitoring in acute myocardial infarction therefore appears to be unnecessary in patients with normal clinical findings, but in those with clinically diagnosed congestive heart failure it is mandatory for precise indication and evaluation of therapy.
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