Search PubMed⌕ Search

Biomedical subjects

M Gertsch

Publications and source records attributed to M Gertsch.

53 records · Page 3Linked to original sources
PubMed1975

[Orthorhythmic pacemaker and salvo-like cardiac stimulation. New procedure aiming at the suppression and prophylaxis of cardiac arrhythmia and the determination of electrophysiological measurement magnitudes in vivo].

The orthorhythmic pacemaker (ORPM) represents a new apprach in cardiac stimulation. The use of conventional demand pacemakers is essentially limited to the treatment of bradycardic arrhythmias. The principle of the ORPM consists in early stimulation after premature beats, taking into account the R-R interval of the preceding spontaneous beat. In this "extrasystolic pacing" the escape interval is not fixed; rather, the premature electric stimulus will be fired after an interval, the duration of which can be selected as a fraction of the preceding cycle length. The ORPM enhances the possibilities for treatment of atrial and ventricular tachycardias due to re-entry. The idea of "bursts" of stimulation e.g. the firing of up to ten impulses within a short time, is put into practice in the actual latest ORPM model. It widens the application of the ORPM principle and allows simplified measurement of the refractory period.

Arrhythmias, Cardiac↗
PubMed1975

[The left-fascicular blocks ("hemiblocks")].

The left ventricular impulse conduction system is composed of two, three or more fasciculi. The blocking of the impulse in one fasciculus is termed a left fascicular block or "hemiblock" for short. The anatomical variations of the left ventricular impulse conduction system, and the possibility of partial blocking, makes the electrocardiographic diagnosis more difficult. The ECG criteria of left fascicular blocking - with special regard to the left anterior fascicular block - and their combinations with the right block (bilateral bifascicular block) are discussed. A bilateral trifascicular block without total AV block (in presence of a third left ventricular fascicle) is diagnosable in the ECG. The limits of electrocardiographic diagnosis of the fascicular impulse conduction disorders are shown and the importance of anamnestic and clinical data are emphasised with regard to therapy. Frequency and etiology of fascicular blocking are noted.

Bundle of His↗
PubMedDate not supplied

[Agenesis of the right branch of the pulmonary artery, diagnosis by lung scan].

The white thrombus is formed due to the platelet adhesiveness to the vascular wall, and to their agglutination mediated by the liberation of ADP, the adenosine inactivation and the deposit of calcium and accelerating factors of coagulation as well. The red thrombus is formed by the thromboplastic activity, combined with the action of several coagulation factors, fibrin, erythrocytes and leucocytes. For the above mentioned facts, we may try to avoid the white thrombus formation by means of antiadhesive platelets drug, and the red thrombus production with the use of anticoagulants. If the thrombus is already formed, the drugs of choice are the fibrinolytics, to intend the dissolution of the clot. In the present paper, the mean characteristics as well as the actual concepts on the use of these three groups of drugs, are described.

Adult↗