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Biomedical subjects

G Oltmanns

Publications and source records attributed to G Oltmanns.

35 records · Page 2Linked to original sources
PubMed1981

[Cardioselective beta receptor blockade in acute myocardial infarct with talinolol].

On 9 patients with acute myocardial infarction the influence of talinolol (cordanum) on haemodynamic parameters in intravenous administration and after this in oral application was examined. Talinolol led to a slight decrease of the heart rate, of the arterial blood pressure and of the cardiac output as well as to a more distinct reduction of the contractility in nearly uninfluenced left-ventricular filling pressure. In comparison to a conventionally treated control group (n = 11) the decrease of the heart rate as well as of the contractility was somewhat more distinct. The changes found are to be explained in the sense of a heart exoneration. In one patient possibly by talinolol a deterioration of the pumping function developed 56 hours after the acute event. In another patient a depressive effect on the sinus node is not to be excluded. Ventricular fibrillation and disturbances of the atrioventricular conduction did not appear in contrast to the control group. The influence on supraventricular and ventricular cardiac dysrhythmias was distinctly favourable in other 9 patients with acute myocardial infarction despite clinical signs of cardiac decompensation. Only in one patient a further deterioration of the pumping function developed despite control of the disturbance of rhythm. According to the experimental and up to now existing clinical experiences beta-receptor blockers are indicated above all in the early phase of the acute myocardial infarction, if shock, acute heart insufficiency and bradycardiac disturbances of the heart rhythm are not existing. Here paticularly at the beginning of the therapy is a proved change in the first 2-4(-8) hours to prevent the expansion of the infarct size or the onset of large infarctions.

Adrenergic beta-Antagonists↗
PubMed1981

[Endocardial mapping in the differential diagnosis of supraventricular arrhythmias].

The surface ECG only in a restricted number allows evidence on the course off conduction in the atria. By introduction of the intracardial electrography into the clinic as well as various stimulation techniques has become possible better to analyse the formation of stimuli and the conduction system in man. The diagnosis of supraventricular arrhythmias renders particular difficulties. By recording of the intracardial potentials in as many as possible and defined points of the atria in relation to the fixed point possibly near to the sinus node (endocardial mapping) a better analysis of the excitation and conduction is possible. Only own examinations on 9 patients with sinus rhythm and supraventricular dysrhythmias by means of atrial mapping showed that origin and course of the conduction of cardial arrhythmias may be clarified better. The method mentioned according to our experiences hitherto made and reports in literature despite several lacks and difficulties in an enrichment of the diagnostic possibilities in supraventricular dysrhythmias.

Adolescent↗
PubMed1981

[Esophageal electrocardiography--new variants in derivation technics].

Oesophageal electrocardiography provides for an analysis of heart rhythm that must be considered more accurate than the one obtained in a conventional electrocardiogram. Bipolar intraoesophageal and oesophagosternal or oesophagoparasternal leads, using adequate electrode cables, permit recordings, satisfactory from a technical point of view, even when applying the methods of provocations (ergometry).

Arrhythmias, Cardiac↗
PubMed1980

[Treatment of severe hypertension and hypertensive crises with nitrates].

Taking into consideration the frequent combination of hypertension, ischaemic heart disease and heart insufficiency the effect of blood pressure as well as the influence of pre- and afterload gain increasing importance, when nitrates are used. It is the question, whether the blood pressure reducing effect may be used with a certain aim or not. In own investigations acute haemodynamic experiments with glycerol trinitrate were carried out on 10 patients with arterial hypertension (catheterization, estimation of HMV and so on) in rest and under ergometric load, clinical therapeutic experiments on 10 patients with crisis of hypertension with cerebral and/or cardiac complications as well as long-term experiments with pentaerythrityl tetranitrate on 6 patients with in most cases severe arterial hypertension. The acute effects on the haemodynamics correspond to those in normal blood pressure, in which case the reduction of blood pressure and resistance is more expressed. The favourable effect of glycerol trinitrate in the crisis of hypertension with cardiovascular complications can be regarded as proved. First own experiences with the long-term application of nitrates do not yet result in a clear estimation of effectivity and indications.

Acute Disease↗
PubMed1980

[Electrophysiological findings in atrial arrest].

It is reported on intracardiac electrophysiological findings of a 50-year-old patient in whom an atrial arrest could be diagnosed. With the help of the intracardiac mapping electric residual activities could be proved in the area of the sinus node, of the anterior atrial bundle as well as of the left atrium. The electrophysiological mechanism, the causes, the ways of conduction as well as the valency of the diagnostic measures are discussed.

Arrhythmias, Cardiac↗
PubMed1980

[Interaction of digoxin and quinidine].

Plasma digoxin level and digoxin excretion were studied in 5 pat. suffering from cardiovascular diseases who had to be digitalized because of acute states of congestive heart failure. One of the patients took quinidine simultaneously. In the "quinidine" patient digoxin level was elevated to the 2--2.5 fold, as compared with "control" patients. Digoxin excretion of the "quinidine" patient was slightly increased. Following the results, a reduction in digoxin dosage to half of the dose is recommended.

Adolescent↗
PubMed1979

[Myocardial infarction without coronary artery changes].

Since 1972 6 patients (4 males and 2 females) at the age from 18 to 44 years with myocardial infarctions could be observed whose coronary system in the subsequent coronarographic examinations proved to be unconspicuous. The diagnosis of the infarction was anamnestically, laboratory-chemically, electrocardiographically and partly scintigraphically ascertained. Issuing from features of infarction and pseudoinfarction, respectively, in the ECG other differential-diagnostically important cardiac and extracardiac causes could be excluded. In comparison to patients with coronary sclerosis typical symptomatology could not be delimited. Peculiarities of the clinical picture are the juvenile age, the in most cases short or lacking angina pectoris anamnesis, the frequent lack of factors of risk and the inclination to disturbances of rhythm. Up to now a satisfying etiologic clarification could not be rendered. The relevance of the different possibilities of the disturbed equilibrium between O2-offer and -need concerning the clinical course of our patients is discussed. Here on the side of the O2-offer the spasm of the big and small vessel and the disease of the small vessels are regarded as decisive factors of the development of the infarction, where as the coronary embolism with subsequent lysis is less to be taken into consideration. Other pathogenetic mechanisms, such as the pathologic Hb-O2-dissociation and the metabolic changes influencing the O2-need must be included into the causal chain of this presumably polyetiologic process. Prognostic and therapeutic aspects which closely correlate with the etiologic explanation are discussed.

Adult↗
PubMed1978

[Exertion-electrocardiographic and hemodynamic studies with oral verapamil in chronic ischemic heart disease].

The effect of the Ca++ -antagonist Verapamil on the ECG, the haemodynamic parameters and the systolic time intervals was investigated in the long-term experiment on 12 patients with ascertained chronic ischaemic heart disease at reat and during exercise. The dosage was 3 x 80 mg/die during 4 weeks. The tolerance was not increased. The load-induced decrease of the ST-T-distance in the ECG was improved under load and in the recreation phase. The function of the myocardium, measured on the quotient LVET/ICT, improved under load with simultaneous decrease of the double product and the TTI, the pulmonary pressure, however, remained uninfluenced. Side-effects were not observed.

Adult↗
PubMed1978

[Severe Klebsiella serogenes infections].

It is reported on 2 cases of Klebsiella-septikaemia with difficult course. Germs of the group Klebsiella aerogenes could be proved microbiologically. On the basis of the peculiarities of the clinical course the author adopts a definite attitude to the development of the infection, the pathogenesis, to the microbiological proof and to the aimed antimicrobial chemotherapy. The antibiotic treatment was successful in the first case with karbenicillin and gentamycin and in the second case with cephalotin and gentamycin during 4 weeks when a penicillin allergy was present and following this with chloramphenicol and streptomycin during 3 weeks.

Aged↗
PubMed1975

[Mechanocardiography as a screening method in chronic ischemic heart disease].

On 121 patients with ischaemic heart disease mechanocardiographic examinations were carried out on conditions of rest and partly under conditions of ergometric load and were compared with a group of healthy persons. It was shown that in the patients with ischaemic heart disease there appeared a significant shortening of the ejection time (LVETk), prolongation of the frequency-corrected preejection time (PEPk) as well as of the isovolometric contraction time (ICT and ICTk), an enlargement of the quotient (see article) and reduction of (see article) in rest. Under load the differences between healthy persons and patients with ischaemic heart disease became more clearly with regard to the quotients (see article) as well as (see article) and proved as favourable for the judgment of the cardiomechanics. With the help of the above mentioned mechanocardiographic parameters in connection with the usual diagnostic methods according to our opinion patients with ischaemic heart disease may be diagnosed for the greatest part.

Adult↗
PubMed1975

[Blood clotting and thrombocyte function in reversible hemorrhagic shock].

In experiments on 12 mongrel dogs, serving as models of reversible hemorrhagic shock, the influence on blood clotting and thrombocyte function was studied. Initial hypercoagulability, observed already after introduction of anesthesia, and multiplying of pathological aggregation stages dissociated from decreased number of thrombocytes suggest a considerable influence of the proceeding of reversible hemorrhagic shock on the clotting system. It is concluded that the initial hypercoagulability is not causally related to the changes of platelet function, which represent a starting mechanism for the arising of consumptive reaction in protracted and irreversible shock.

Animals↗
PubMedDate not supplied

Differences in color vision impairment caused by digoxin, digitoxin, or pengitoxin.

Color discrimination ability of 53 patients with congestive heart failure and 32 healthy volunteers treated with digoxin, digitoxin, or pengitoxin was determined with the Farnworth's Munsell 100 hue test. The patients had been treated with digitalis glycosides for several months prior to color vision testing. The volunteers received glycosides until a steady-state plasma concentration was reached. Glycoside plasma levels were measured by radioimmunoassay on the 3 days prior to color vision testing. The total error scores, indices of color discrimination, increased with the glycoside plasma levels. Subjects treated with digitoxin or pengitoxin exhibited no marked elevation in total error score at therapeutic concentrations, whereas 17 of 28 subjects with therapeutic digoxin plasma concentrations (less than 2.0 ng/ml) showed disturbed color discrimination. At toxic plasma levels all 5 digoxin-treated subjects, 7 of 13 digitoxin-treated subjects, and 3 of 8 pengitoxin-treated subjects showed impairment of color discrimination. The greater tendency of digoxin to impair color vision in comparison with digitoxin and pengitoxin may be related to a higher uptake or different distribution in the retina.

Acetyldigoxins↗