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Biomedical subjects

V Cervenka

Publications and source records attributed to V Cervenka.

At least 73 records · Page 4Linked to original sources
PubMed1984

Possibilities of two-dimensional echocardiography in cardiomyopathies.

Findings in 20 patients with congestive, in 14 with hypertrophic and in one with restrictive cardiomyopathy are described. In congestive cardiomyopathy, there predominated left ventricular dilatation and diffuse hypokinesis with decreased ejection fraction. The main criteria are reported for differentiating it from advanced diffuse ischaemic heart disease. More detailed characterization is presented of the type of asymmetric septal hypertrophy and of the systolic anterior motion of the mitral apparatus and the possible causes of this finding are discussed. In a patient with restrictive cardiomyopathy there predominated a symmetric thickening of the left ventricle, with diffusely decreased kinetics and increased density of all structures.

Adolescent↗
PubMed1984

Distribution of hypertrophy in obstructive and non-obstructive types of hypertrophic cardiomyopathy.

70 patients with hypertrophic cardiomyopathy were examined by one-dimensional, two-dimensional and pulsed Doppler echocardiography. According to the degree and distribution of hypertrophy in left ventricular (LV) short axis views, the findings were divided into 5 types. In type I, hypertrophy affected only the interventricular septum (10 patients, i.e. 14.2%). In type II, hypertrophy involved besides the septum, also the LV anterior wall (type IIa-26 patients; 37.1%) or lateral wall (type IIb-21 patients; 30.0%). Type III included patients with hypertrophy of the LV posterior wall (3 patients; 4.3%). Six patients (8.5%) had a distinct hypertrophy of the whole apical part of the LV and septum (type IV). Type V was represented by concentric hypertrophy of the LV and septum (4 patients; 5.7%). Hypertrophy of the right ventricular myocardium was found in 6 patients.

Adolescent↗
PubMed1984

Two-dimensional echocardiography in evaluating left ventricular function.

In 65 patients examined by mechanical sector and M-mode echocardiography, left ventricular volumes and ejection fraction were determined. Comparison with biplane ventriculography has shown that the above-mentioned parameters can be determined by sector relatively very reliably. Correlation coefficients for end-diastolic and end-systolic volumes were 0.74 and 0.85 respectively, for the ejection fraction 0.78. Substantially less close correlations were found for parameters obtained by one-dimensional echocardiography, especially in patients with segmental disturbances of kinetics and abnormal left ventricular geometry. The greatest contribution of this laborious and demanding method consists in the possibility of relatively reliable estimation of left ventricular volumes and ejection fraction by two-dimensional echocardiography also in these patients.

Adult↗
PubMed1984

Two-dimensional echocardiography in acute transmural and non-transmural myocardial infarction.

Left ventricular wall motion abnormalities in acute myocardial infarction and their changes during hospitalisation were investigated in 40 patients by means of two-dimensional echocardiography (2-D-E). It was confirmed that two-dimensional echocardiography can detect segmental left ventricular asynergy, follow up its development during hospitalisation and provide on the basis of this information on the extent of infarction. Differences were found between transmural and non-transmural infarctions, in particular as regards the duration of impaired wall motion (in non-transmural infarctions it was only temporary). Suggested indicators of the extent of this disorder ("index of asynergy" and "extent of asynergy") seem to be valuable for the evaluation of the extent of infarction and of its clinical impact. The sensitivity and specificity of echocardiography, as compared with postmortem findings, is satisfactory.

Adult↗
PubMed1984

Diffuse left ventricular hypokinesis in cardiogenic shock--its cause or consequence?

Five patients in cardiogenic shock due to acute myocardial infarction were examined by two-dimensional echocardiography. In one patient, cardiogenic shock developed only after rupture of the interventricular septum, four subjects had "primary" cardiogenic shock. In these four persons there were found extensive disturbances of left ventricular wall motion (the mean extent of the akinetic or dyskinetic zone amounted to 41% of the left ventricle (LV). However, equally extensive (and even larger) disturbances of LV kinetics were found in another 11 patients with acute MI, in whom there did not develop cardiogenic shock. The basic difference between the two groups consisted in the fact that in patients in cardiogenic shock the remaining part of the left ventricle exhibited severe hypokinesis, whereas in other infarcts it was normokinetic or hyperkinetic. Autopsy findings in all patients revealed severe diffuse involvement of all coronary arteries. In the discussion, it is pointed out that the above-mentioned phenomenon (hypokinesis of the "intact" part of the left ventricle) may be both one of the causes of shock as well as merely its consequence.

Echocardiography↗
PubMed1983

Echocardiography during attack of angina pectoris.

Two patients with angina pectoris were echocardiographically examined during an attack of angina pain. In both patients, segmental asynergy of the left ventricle was present during chest pain. The echocardiographic finding before the attack and after its regression was normal. It appears that angina pectoris and an echocardiographically detectable asynergy of the left ventricle are two processes taking place almost simultaneously, their common cause being myocardial ischaemia. Wall motion abnormalities which develop during an attack of angina pectoris are fully reversible. These findings also indirectly support the assumption that two-dimensional echocardiography can practically immediately after the onset of chest pain in myocardial infarction prove asynergy of the left ventricle.

Angina Pectoris↗