[Clinical efficacy of non-invasive evaluation of intra- and interatrial conduction in patients with ischemic heart disease]. / Klinicheskaia otsenka ispol'zovaniia neinvazivnogo metoda opredeleniia vnutri- i mezhpredserdnoi provodimosti u bol'nykh ishemicheskoi bolezn'iu serdtsa.

AIM: To try feasibility of non-invasive registration of intra- and interatrial conduction by means of simultaneous registration of echo-CG (in B and M modes) and ECG. MATERIALS AND METHODS: The time of intra- and interatrial conduction was measured at simultaneous registration of echo- CG (B and M modes) and ECG in standard lead II. The time of atrial conduction was registered in ms from the start of ECG wave "P" to beginning of echo-CG mechanical contractions. The results were compared to those obtained at the direct method (registration of atrial conduction by electrode fixed on the atrial myocardium). RESULTS: The data by the two above methods showed high correlation (for intraatrial conduction r = 0.93, for the interatrial one r = 0.85). The study confirmed the leading role of end-diastolic volume of the left ventricle and/or uneven wave movement along the atria in development of supraventricular arrhythmia in coronary heart disease. CONCLUSION: The proposed non-invasive method can find application for estimation of atrial conduction both in clinical practice and experiment. The time of exitation conduction through the atria measured by the new non-invasive method and the direct method is almost the same.

[Laser irradiation of venous blood for prevention of reperfusion syndrome in myocardial infarction]. / Primenenie lazernogo oblucheniia venoznoi krovi dlia preduprezhdeniia reperfuzionnogo sindroma pri infarkte miokarda.

The antioxidant effect encountered in laser irradiation of venous blood suggested the study of the possibility of its use for the prevention of the reperfusion syndrome in myocardial infarction (MI). Analysis of biochemical, electrophysiological, hemodynamic, and morphohistological data obtained in experiments on male rats and in clinical cases showed that irradiation of venous blood by the LG-75 helium-neon laser with a wavelength of 632.8 nm produced the best effect. The effect is realized through increase of collateral blood supply in the region of the MI and the antioxidant and antihypoxic action.

[Histological manifestations of the sparing effect of cooling in heat dissection of the cerebral cortex and liver]. / Gistologicheskie proiavleniia shchadiashchego éffekta kholodovoi zashchity pri teplovom rassechenii kory bol'shogo mozga i pecheni.

A new method of heat dissection of tissues combined with application of cooling was studied experimentally in white rats. Histologic changes of tissues of the cerebrum cortex and the liver wounds were investigated. It was found out that automatic selection of temperature regimen in combination of heat and cold ensured stable effect which was well balanced from the point of view of its depth and prevented overheating of tissues surrounding a wound channel. In comparison with cut wounds the above mentioned method allowed to gain better safety of cells.