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Application of ultrasound surgical aspirator promotes rapid formation of major cavities with dry inner surface in the depth of hepatic parenchyma. Filling of the latter with sutured copolymer of monovinyl ether of ethyleneglycol in the ratio of one filler volume to three cavity volumes results in the formation of cysts with the given stable dimensions. Good aspiration of necrotic tissues promotes rapid formation of thin-walled cysts. The given hepatic cyst model may be used in the development of new surgical and puncture methods of treatment, as well as testing of new drugs.

The possibility of hepar resection by means of Soviet-made ultrasound device URSK-7N-18 was investigated in experiment on 13 mongrel dogs. The device was adapted to this surgery and was supplied with a special working part with a vacuum pump and channel for inspiration of liquid. The working part frequency is 26.5-30.0 kHz, resonance frequency is 26.5 kHz. The device does not damage blood vessels, nerves, and ducts but on the basis of morphology it provides both hemostasis at the early period after surgery owing to changes in microcirculation, and rapid wound healing by means of aspiration of necrotized tissues.

Twenty one patients with the long-term compression syndrome (LCS) and 12 patients with burns treated with sandoglobulin in combination with antibacterial therapy were followed up. The control groups included 14 and 18 patients, respectively. All the patients had wound infections. Increased or lowered respiratory burst of peripheral blood neutrophils and lowered contents of active T-lymphocytes were detected in the majority of the patients. The patients had also an increased respiratory burst of tissue homogenate in the primary focus. Sandoglobulin decreased the periods of normalization of the immunological indices, body temperature and leukogram shifts to the right. The most pronounced effect of the drug was recorded before radical operations, i.e. in the presence of acute microbial toxemia or in patients with severe and extended burns. The procedure of immunological monitoring developed by the authors rapidly estimates the indications to the use of sandoglobulin alone or in combination with other immunomodulators.

A simple new method for determination of necrosis of the skeletal muscles is suggested. Stimulation of the muscle and the recording of the contraction is made via a needle electrode. The contraction is recorded as a characteristic drop of the muscle resistance to high-frequency current which per se does not cause any stimulation. The zone of necrosis does not demonstrate any characteristic changes in the resistance. The presence of necrosis in the areas under exploration was proved histologically.

Modern methods for the evaluation of principal respiration indexes were analysed to formulate the demands for methodological characteristics of the devices used in lung functional diagnosis. As a result the extent of measurement random errors of main respiration indexes, which guarantee the prescribed level of right diagnosis probability are established.

A simple decisive rule for classifying RR-intervals of electrocardiograms by two types, sinusoidal and anomalous, is deduced using the theory of pattern recognition. Parameters of the decisive rule according to the minimum of the Buyess probability of the classification error are selected. The algorithm may be realized with microprocessors and used in cardiac rhythm monitors.

A possibility was studied of applying the deep and infrequent respiration test with an object of increasing the informativeness of the statistical parameters of the ECG sequence interval as applicable to the quantitative evaluation of the functional state of man. Examination of patients with wound infection shown that the deep respiration test makes in possible to assess quantitatively the status of test subjects on the basis of two statistical parameters (the mean value of RR interval of ECG and root-mean-square deviation).