[Photoinduced bactericidal activity of TiO2 films].

A decline in CFU of gram-positive and gram-negative bacteria on the surface of UV illuminated TiO2 films (wavelength of 380 nm) is shown. A 29, 45, and 47% decrease in bacterial viability of Staphylococcus aureus, Staphylococcus epidermidis, and Escherichia coli, respectively, was seen following a 12-min exposition. It was first discovered that the reuse of TiO2 films to test a bacterial suspension for viability removes UV-induced bactericidal activity.

[Treatment of mediastinitis].

The authors work is based on experience in the study of 56 patients with acute mediastinitis of various origin who were treated in the period from 1981 to 1990. There were 33 males and 23 females whose ages ranged from 16 to 65 years, Odontogenous mediastinitis was diagnosed in 23, tonsillogenous in 2, and mediastinitis resulting from injury to the esophagus in 31 patients. Instrumental injuries prevailed.

[Recurrent pulmonary hemorrhage].

The results of treatment of 235 patients with pulmonary hemorrhage of various etiology which stayed in clinic in 1980-1992 yrs. were analyzed. Of 216 patients, whom diagnostic bronchoscopy was performed, the hemorrhage origin was found in 137, of whom in 13 its localization was imprecise.

[Complications in hiatal hernia].

Of 1498 patients suffering of hiatal hernias of the diaphragm 375 were operated on for complicated course of the disease. It was established that in some of the complicated course of the disease the background is the vagal-solar syndrome developing due to traumatization of the branches of vagal nerves and solar structures by the stomach prolapsing into the mediastinum. To control this phenomenon the authors used in 167 patients their original method of surgical correction of hiatal hernias of the diaphragm.