Publications by authors named "Shabad A"

We study the electric potential of a charge placed in a strong magnetic field B>>B(0) approximately 4.4x10(13) G, as modified by the vacuum polarization. In such a field the electron Larmour radius is much less than its Compton length.

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A maximum value for the magnetic field is determined, which provides the full compensation of the positronium rest mass by the binding energy in the maximum symmetry state and disappearance of the energy gap separating the electron-positron system from the vacuum. The compensation becomes possible owing to the falling to the center phenomenon. The maximum magnetic field may be related to the vacuum and describe its structure.

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Urinary tract infection (UTI) in females occurs significantly more frequently than in males because of specific anatomical and functional features of female urinary system, sequelae of pregnancy, delivery, gynecological diseases. Much controversy still exists as to pathogenesis of UTI and UTI-induced urinary inflammation. We have examined 233 females of different age with UTI and obtained evidence which shows participation of such factors as early and intensive sex, ignorance of sex hygiene, multiple pregnancies, deliveries, abortions, inflammatory gynecological diseases, anogenital infection in its pathogenesis.

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Clinical, laboratory and pathomorphological investigations evidence for close relationships between acute infectious inflammatory conditions of the prostate and thrombohemorrhagic complications arising both locally and systemically. All these postoperative complications manifesting clinically as acute prostatitis, epididymo-orchitis, urosepsis, bacteriotoxic shock, bleeding, thrombosis and embolism, latent or marked DIC syndrome have underlying local infectious-inflammatory process (postoperative acute prostatitis). Preoperative detection of local infection (concomitant chronic prostatitis), monitoring of hemocoagulation, antibacterial and antiinflammatory therapy of chronic prostatitis and normalization of blood rheology improve surgical outcomes in prostatic adenoma and lead to less frequent occurrence of both acute inflammatory and thrombohemorrhagic complications.

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The experiments on naturally pregnant rats have demonstrated that pregnancy contributes to much more frequent occurrence of vesicoureteropelvic reflux (VUPR) which, in its turn, is essential for pathogenesis of acute gestational pyelonephritis (AGP). Dynamic obstruction of the urine flow as a result of reduced function of leiomyocytes of urinary tract muscles, decreased urothelial glycocalyx and consequent adhesion of pathogenic agents comprise parts of this pathogenesis. The conclusion is made that VUPR pregnant females are at risk to develop AGP and should be placed by the urologist on ultrasonic monitoring lasting all pregnancy and postpartum periods.

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Local exposures to low-intensity laser radiation (LILR) in chronic prostatis (CP) patients diminish basic symptoms of the disease (pain, dysuria, sex disorders, objective picture). Clinical response was obtained in 93.2% of cases.

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Such wide-spread urological diseases as nephrolithiasis and prostatic adenoma requiring surgical management are often associated with chronic infection or inflammation (pyelonephritis, prostatitis, adenomitis). Relevant antiinflammatory treatment as a rule is conducted after the patient hospitalization which may induce unwanted emotional stress, occasional hospital infection, additional material expenditures. The authors have the experience of bactericidal and antiinflammatory treatment of the kidneys (143 patients with nephrolithiasis) and prostate (287 patients with adenoma) in the outpatient setting.

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The diagnosis of vesicopelvic reflux (VPR) in pregnancy is not a simple task because of the requirements of noninvasiveness, safety, minimum radiation load, informative value. The authors suggest urinalysis and ultrasound (US) investigation as VPR screening tests in pregnancy. US VPR diagnosis meets the requirements of a screening method, has the advantages of a high VPR detection capacity, noninvasiveness, feasibility of further US monitoring, simultaneous study of the urological and obstetric status.

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In pathogenesis of acute epididymitis (AE) an important role belongs to retrograde infection of the epididymis. The infection with urethral or urinary flora occurs via reflux and adhesive mechanisms. Staging of the disease and differentiation of acute epididymitis with epididymo-orchitis are the essential aims in the diagnosis.

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The paper is concerned with acute pyelonephritis pathogenesis in patients with a solitary kidney. Upon nephrectomy, the remaining kidney undergoes compensatory-adaptive processes giving rise to injury of the first barrier of the local nonspecific resistance. This results in more rapid and severe course of acute pyelonephritis, development of pyodestructive disease, protracted run.

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It is a review of present-day and historical aspects of bacterial toxic shock arising in urological setting. It is noted that conditions of its onset are changing, therapeutic approaches undergo revision, critical care facilities are updated. Among the causes of this complication the authors single out endoscopic procedures, transurethral interventions in the presence of infectious process, hospital infection, long stay at hospital.

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The paper presented the experience in the prevention of infectious complications during the renal surgery developed both in the organ operated on (acute postsurgical pyelonephritis) and in the surgical wound later. The package of prophylactic measures was employed in 48 patients operated on for the diseases of kidneys and urinary tract (nephrolithiasis predominantly). It included aseptic, antiseptic techniques, antibacterial treatment and preventive treatment in the pre-, intra- and postoperative periods, as well as intraoperative irrigation of the wound with antiseptic solutions and postoperative local therapy.

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