PubMed Health⌕ Search

Biomedical subjects

V Laufberger

Publications and source records attributed to V Laufberger.

13 recordsLinked to original sources
PubMed1982

Octant vectorcardiography and automatic diagnosis of coronary artery disease.

Octant vectorcardiography is based on two new principles--octants and peaks (Laufberger 1980, 1981, 1982). The octants divide the cardioelectrical space into eight parts. The peaks are characterized by the maxima of six sets recorded and printed by a computer. Special characteristics may be determined for the diagnosis of coronary artery disease, namely reversed rotation, the appearance of the fifth octant and successively deteriorating findings of the octant vectorcardiography examination. Electronic equipment was constructed providing automatic display of octants and peaks. From the results the state of the coronary artery disease can be stated immediately.

Coronary Disease↗
PubMed1982

Octant vectorcardiography - the evaluation by peaks.

From the Frank lead potentials a computer prints out an elementary table. Therein, the electrical space of left ventricle depolarization is divided into eight spatial parts labelled by numbers 1-8 and called octants. Within these octants six peaks are determined labelled with letters ALPR-IS. Their localization is described by six-digit topograms characteristic for each patient. From 300 cases of patients after myocardial infarction, three data bases were compiled enabling every case to be classified into classes, subclasses and types. The follow up of patients according to these principles gives an objective and detailed image about the progress of coronary artery disease.

Computers↗
PubMed1981

Octant vectorcardiography and its data basis.

The present communication is a continuation of the previous report published in this journal [Physiol. bohemoslov., 29: 481, 1980]. It presents further information on the practical use and evaluation of the octant vectorcardiography method. The description starts from the elementary table set up according to the Frank lead system. All cases may be classified alpha-numerically into the data bases by means of a newly introduced concept - the octant. The data include 250 cases after myocardial infarction, supplemented by further information on the integration of peaks. In this way, even widely different cases can be compared in general. In advanced cases of coronary artery disease, an octant labelled in our terminology as the fifth octant, has been defined. The method brings new information about cases after myocardial infarction and it helps to determine the progress of the disease.

Computers↗
PubMed1980

Octant vectorcardiography.

Potentials recorded from the heart by the FRANK lead system are expressed in figures by means of analog-to-digital convertors. An elementary table is thus obtained, in which positive and negative numbers of X, Y, Z of eight possible combinations are called octants and have been numbered successively. The sequence of octants during a single depolarization is individual, but characteristic for a given group. Patients after myocardial infarction were examined and classified in this manner. Further more, peak amplitudes were assessed as the second parameter, i.e. the maxima of positive and negative potentials of X, Y, Z. The octants and peaks produce a network of a higher order to that in examined patients and may serve for the diagnostics of heart infarction. The method is intended for qualitative evaluation of coronary insufficiency, for which it provides novel information. It introduces computer techniques into electrocardiography.

Analog-Digital Conversion↗