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Biomedical subjects

G Kronik

Publications and source records attributed to G Kronik.

61 records · Page 4Linked to original sources
PubMed1977

[Mechanocardiographic diagnosis of impaired cardiac function (author's transl)].

The value and limitations of phonocardiography, systolic time intervals, apex cardiography and kinetocardiography in the diagnosis of impaired cardiac function during rest and haemodynamic stress were critically reviewed on the basis of studies carried out in our laboratory, as well as reports in the literature. When compared with invasively-obtained measurements, none of the above-mentioned techniques allows the prediction of heart function quantitatively in a single given patient. However, when one considers the broad overlap of mechanocardiographic measurements in normal subjects and patients with heart disease and defines an abnormal mechanocardiogram accordingly, these methods may be used to diagnose abnormal cardiac function with adequate specificity though low sensitivity.

Blood Pressure↗
PubMed1977

[Influence of five commercial heparin preparations on the collagen induced platelet aggregation (author's transl)].

The ADP- and collagen-induced aggregation of platelets in PRP of healthy probands was tested in vitro in the presence of 4 heparin preparations (Novo, Vitrum, Liquemin, Haemoderivate) and of a heparinoid (Eleparon). None of the preparations caused a significant direct aggregation. The collagen-induced aggregation was inhibited by all mentioned preparations; thereby the heparins proved to be effective approx. to the same degree whereas the heparinoid proved to be significantly less effective. The ADP-induced aggregation was potentiated by all preparations. A considerably different sensitivity to heparin could be observed in the single PRP's. A special method was found out to exclude the influence of the heparin-sensitivity of the PRP's to compare the special effects of the heparins.

Collagen↗
PubMed1977

[Low-risk transfemoral selective coronary arteriography employing Sones catheters and total body heparinization (author's transl)].

Indications, results, and complications in 400 transfemoral selective coronary arteriograms are reported. After the first 100 examinations a sharp decline in serious complications and an increase in complete studies with opacifications of both coronary arteries and left ventricle was achieved. This was thought to be due not only to mounting experience but also to total body heparinization and transfemoral use of Sones catheters with torque control. According to our results transfemoral selective coronary arteriography is considered to be an indispensable examination which may be performed by experienced investigators without hesitation when indicated.

Adult↗
PubMed1977

[Parallel and opposite mitral leaflet motion in mitral stenosis. An echocardiographic study (author's transl)].

In 45 patients (pts.) with mitral stenosis (MS) multiple echocardiographic recordings of the posterior mitral leaflet (PML) were obtained and its motion pattern was carefully analyzed. 25 pts. showed only parallel motion (PM), one patient only opposite motion (OM) of the leaflets during diastole. In 19 pts. PM as well as OM (defined as backward movement of the PML immediately after the D-point and as forward motion during mitral closure, respectively) could be recorded at least two times. In most of these cases PM was impressive while OM could be demonstrated only by careful analysis of numerous recordings. In 4 of the 19 cases with PM and OM, however, the reverse was true. We conclude that OM should only be taken as evidence against MS when multiple recordings of the mitral leaflets have failed to reveal PM and when other echocardiographic signs of MS are missing. Possible explanations of the PM-OM combination are discussed.

Echocardiography↗