[Interocular asymmetry of nystagmus and motion sickness].

Binocular video nystagmography was employed to study the human vestibulo-ocular reaction to the double rotation test used in medical flight certification to assess vestibulo-vegetative stability. Purpose of the investigation was to establish an interrelation between parameters of the nystagmus reaction to rotation and severity of motion sickness (MS). The total of 135 medically certified flying men aged 23 to 47 years were subject to testing by intermittent Coriolis accelerations accumulation according to Bryanov's procedure. The vestibulo-vegetative reaction was assessed by the criteria of vegetative reactivity and protective movements. The closed-mask binocular test was performed during and after rotation, It was shown that interocular nystagmus asymmetry is linked directly with MS severity. Asymmetry coefficients are proposed for unidirectional nystagmus during inclinations (C(ai)) and straightening (C(as)) and for time of convergent rotational nystagmus during inclinations (T(ci)) and straightening (T(cs)). Coefficients C(ai) and T(ci) were found to correlate with MS severity (p < 0.05). From the data of the investigation it was deduced that the mechanism of MS during double rotation amounts to intravestibular interlabyrinthine conflict.

[Resistivity and hemodynamic reactions of essentially healthy pilots to the passive orthostatic test].

The paper analyzes the data of expert tilt testing (-80 degrees, 20 min.) of 66 essentially healthy pilots. Hemodynamic reactions were characterized based on the standard concept of functional classes (FC). Good test tolerance was recorded in 86.4% of cases among which 36.4% were referred to FC-I and 50%--to FC-II. Adequate test tolerance (FC-II) was recorded in 10.6%; reduced and poor test tolerance (FC-IV and FC-V)--in 3%. According to ECG and computerized tachooscillography, the adaptive hemodynamic reactions were optimum in pilots of group FC-I as compared with group FC-II and all the more so when compared with FC-III. The last two groups showed some objective symptoms that had not been looked for in the past (a distinct lability of blood pressure, and incomplete hypertensive and hypotensive reactions) that differentiated these groups from FC-I. Results of the analysis made it possible to put forward additional clinical functional criteria to assess tilt tolerance of pilots with different levels of functional tolerance.

[Pharmacoprophylaxis of sea-sickness syndrome with the help of homeopathic drug "Avia-more"].

Anti-sea-sickness effect of a new homeopathic drug [see text] and its influence on operator's working capacity during Coriolis acceleration was evaluated in blind placebo-controlled investigation conducted in practically healthy volunteers with low vestibular resistance. For comparison "Dimenhydrinate" was used. The investigation has demonstrated that [see text] has rather strong anti-sea-sickness effect, is comparable with dimenhydrinate effectiveness and prevents the development of disorders in sensory-and-motor and cognitive functions during the influence of static-and- kinetic loads. According to the data obtained the protective action of [see text] is most likely connected with adaptive effect on organs and systems that form the functional protective system against sea-sickness. The negative influence of the drug on CNS complex functions was not observed that allows recommending its prophylactic use in subjects with low sea-sickness resistance including the operators.

[The risk factors of cerebrovascular disorders in the vertebro-basilar zone in the persons belonging to the flying staff]. / Faktory riska tserebrovaskuliiarnykh rasstroistv v vertebral'no-bazilarnom basseine u letnogo sostava.

The investigation of cerebral hemodynamics in 318 pilots with the use of ultrasonic dopplerography and transcranial dopplerography has shown that the earliest and most frequent manifestations of cerebrovascular disorders are observed in the vertebrobasilar zone (VBZ). The significant indices characterizing the morphofunctional condition of cerebral arteries are the results of triplex scanning of the main vessels. The pathologic changes in VBZ arteries, the variants of abnormal disposition of vertebral arteries, the secondary changes connected with extravasal effect are often detected during the early cerebrovascular disorders. According to the results of cervical vertebra roentgenography the degenerative-and-dystrophic changes, the congenital anomaly and traumatic injuries could play a certain role in the development of early cerebrovascular disorders in VBZ. Most frequently the symptoms of vertebrobasilar vascular insufficiency develop due to the cervical vertebral dislocation, uncovertebral arthrosis, Kimmerle's anomaly and other changes.

[Evaluation of the effectiveness of a universal pneumatic stimulating system as new therapeutic and rehabilitative means for flying personnel]. / Issledovanie éffektivnosti universal'noi pnevmostimuliruiushchei sistemy kak novogo lechebnogo i reabilitatsionnogo sredstva u letnogo sostova.

Therapeutic and prophylactic efficacy of UPS-1600 was evaluated in relation to various types of diseases. The work involved 86 in-patients who were examined and treated in the Central Military Scientific Research Aviation Hospital. 66% of the patients exhibited a positive therapeutic effect of pneumo-massage combined with the routine methods of treatment. The best results of pneumo-stimulation were observed in patients with varicosity in subcutaneous veins of the lower extremities, hypotonic neurocirculatory dystonia, and in the presence of fatigue. In the running wave mode, UPS-1600 accelerates the process of blood evacuation out of the venous and lymphatic beds in lower extremities, intensifies blood circulation in these regions thus in-loading partly the "peripheral heart". The method of pneumo-stimulation and pneumo-massage of lower extremities was recommended as a therapeutic and preventive means of as medical rehabilitation of flying personnel, so treatment of various nosological forms of diseases.