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Biomedical subjects

L Giec

Publications and source records attributed to L Giec.

At least 55 records · Page 3Linked to original sources
PubMed1985

Transvenous technique of human sinus node electrogram recording. Its significance and applications.

Experience with intracardiac recording of sinus node electrograms (SNE) in 27 patients is described. Under fluoroscopic monitoring the poles of a tri- or quadripolar catheter were positioned at the superior vena cava--right atrium junction. For recording, high amplification of 100 microV/cm and low-pass filters of 0.2-70 Hz were used. SNE was verified by simultaneously recording electrograms from two pairs of poles at the same filter setting and the application of carotid sinus massage. SNE was obtained in 17 patients (63%). It was recognized as a smooth, low-frequency upstroke slope before rapid atrial depolarization. Its amplitude range was 30-90 microV. Directly recorded sinoatrial conduction time (SACT) ranged from 55 to 120 ms (mean 88 +/- 20). In 4 patients with sick sinus syndrome SACT varied from 90 to 220 ms. SACTs calculated by the premature stimulation method and measured directly from SNE were in good correlation (r = 0.61, p less than 0.05).

Adolescent↗
PubMed1984

[Main coronary disease risk factors in metallurgy workers].

The authors investigated the extension of major coronary risk factors among metal-flatten workers. In the whole population the percentage of these factors was as follows: hypertension 14,4%, hypercholesterolemia, 17.7%, hyperglycemia 6,5%, overweight 35% and cigarette smoking 61,3%. The extension of the risk factors is dependent on age and increases with age. No significant correlation was found between these factors and working conditions. In comparison to other investigations carried out in Poland the examined population exhibited considerable tobacco smoking, overweight, hyperglycemia and hypercholesterolemia.

Adult↗