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Biomedical subjects

J Wartak

Publications and source records attributed to J Wartak.

At least 19 recordsLinked to original sources
PubMed1981

A simple method for analysis of vectorcardiograms.

Vectorcardiographic loops can be evaluated with the help of transparent overlays depicting normal ranges for the magnitude and orientation of various P, QRS and T vectors in each of the three conventional planes. By appropriate positioning of such overlays over vectorcardiographic loops it is possible to determine in a matter of seconds whether or not the magnitude and/or orientation of various vectors are within normal limits.

Audiovisual Aids↗
PubMed1979

A grid for calculating vectorcardiographic loop areas.

A graph consisting of small squares of equal size preprinted on a transparent plastic chart can be used for a quick and accurate calculation of the VCG loop area in each quadrant of the three conventional planes.

Humans↗
PubMed1979

A scale for ECG rhythm analysis.

A simple scale, which allows the ECG reader to assess the regularity of the RR (or PP) interval and to detect the P wave train, has been presented.

Arrhythmias, Cardiac↗
PubMed1971

Validity of computer interpretation of the electrocardiogram.

Evaluation of the accuracy of computer interpretation of 2019 standard 12-lead ECG's has been carried out. In 762 records defined as normal by the cardiologist the computer agreed in 41%, found 49% with minor "abnormalities" and read 10% as having gross abnormalities.There were 1257 abnormal records. The computer read 43 of these as normal including five with infarction and three with LVH. Agreement in the various abnormal categories ranged from 31% to 85% and even after review disagreement remained in 33% of cases.

Bundle-Branch Block↗