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The air ionic composition in a classroom was determined during the operation of a Neo Tec XJ-2100 ionizer (Germany). The amount of ions in the air was measured before and after the switch-on of the ionizer. It was shown to vary depending on the mode of operation of the device and differ from the recommended normal values. The necessity of checking up the work of air ionizers both in living quarters and at workplaces is discussed with the application of air ion counters making it possible to carry out monitoring of the air ionic composition and estimate its compliance with the sanitary and hygienic norms.

Appraisal of the results of surgical treatment of 7 patients with arterial aneurysms of the carotid channel convinced the authors of the useful applicability of extra-intracranial anastomosis in occlusion of the cerebral arteries. The anastomosis provides for adequate compensation of circulation in the brain in occlusion of not only the internal carotid artery but also the middle cerebral artery. Depending on the surgical situation, extra-intracranial anastomosis can be performed both as a planned procedure and as an emergency measure. Emergency establishment of the anastomosis is useful in all cases of complications of the operations terminating in occlusion of the internal carotid or middle cerebral artery.