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Vol 5, No 4 (2014)

Articles

Demographic tendencies, modeling of population health and description of population ageing in terms of reliability theory

Chasnyk V.G., Kaminskiy M.

Abstract

It can be difficult to provide unbiased assessment of demographic trends in large most populated countries because of the technological problems and political influences. Nevertheless, without understanding those unbiased tendencies it is impossible to assess and plan socio-economic activities of a state and its individual departments. It is important particularly for medical services strategic planning in which connection fundamental significance is attached to trends especially in pediatric population. According to the reports of the Federal State Statistics Service and of the Ministry of Health Care nowadays we see in Russia relatively favorable demographic tendencies together with steady growth of morbidity in population. These trends are differently directed in different regions and they are mostly inauspicious in rural sparsely populated areas of the northern European part of Russia, in the Urals, in Siberia and in the Far East where genetically deter-mined disorders are among factors that influence the quality of population. Deterioration in quality of growing population inevitably leads to increased costs of medical service. In order to plan medical services we need prognostic models with “population health status” used as dependent variable. In order to minimize the subjectivity while assessing the health status it can be described in terms of reliability theory particularly using the Gini index (1912), which is well known as a tool for risk assessment in mechanics and macroeconomics. In reliability theory. According to the fundamentals of the reliability theory systems are classified into deteriorating or improving, which respectively are defined as systems with increasing and decreasing Rate of OCcurrence Of Failures (ROCOF) or which is even more important for understanding of medical essence - respectively with short or long mean-time-between-failures. This interpretation corresponds to concepts of population morbidity and population ageing/rejuvenation. A Gini-type index (GTI) was introduced which needs one year data of mortality in age cohorts to reveal whether the population is ageing or rejuvenating. Negative values of GTI indicate rejuvenation (decreasing ROCOF), positive values indicate ageing (increasing ROCOF). The results of assessment of population ageing in Russia in 1959 an 2010 are presented. To calculate the GTI the database of Max Planck Institute for Demographic Research (Rostock, Germany) and University of California (Berkeley, USA) was used.
Pediatrician (St. Petersburg). 2014;5(4):5-13
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Higher-dose canakinumab therapy for refractory macrophage activation syndrome in children with systemic juvenile idiopathic arthritis: two case reports

Kostik M.M., Likhacheva T.S., Chikova I.A., Buchinskaya N.V., Abramova N.N., Kalashnikova O.V., Cron R.Q., Chasnyk V.G.

Abstract

Macrophage activation syndrome (MAS) is a life-threatening, potentially fatal complication of systemic juvenile idiopathic arthritis (sJIA) appears in non-remitted fever, cytopenia, coagulopathy, liver and CNS dysfunctions. Triggers of MAS could be disease activity, infections and medications. Known IL-1 is the key cytokine in pathogenesis of MAS and SJIA, and disease flare associated with increased amounts of different cytokines, especially IL-1β. Many cases of MAS are medically-refractory to traditional doses of cytokine inhibition and may require increased dosing of biologic cytokine blockade. Interleukin-1 (IL-1) is typically a key cytokine in the pathogenesis of sJIA and associated MAS. When MAS occurs in the setting of sJIA treated with IL-1 inhibitors, then increased dosing of IL-1 blockers may be beneficial. This has been shown for anakinra, an IL-1 receptor antagonist, but this drug is currently not available worldwide. Another IL-1 blocker, canakinumbab (CKB), is a monoclonal antibody that blocks IL-1β, but does not also block IL-1α like anakinra. Herein, we describe 2 sJIA patients who developed MAS on standard doses of CKB (4 mg/kg). Both patients received an increased dose of CKB: 150 mg (7.5 and 12.5 mg/kg, respectively) with rapid and complete resolution of MAS. Later the CKB doses was tapered to normal regimen. No side effects or adverse events were noticed during usage of increased CKB doses. Increased dosing of CKB should be considered for CKB-treated sJIA patients who develop MAS on standard dosing.
Pediatrician (St. Petersburg). 2014;5(4):14-19
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Evaluating the effectiveness of resuscitation with extracorporeal membrane oxygenation in a model of acute hypoxic cardiac arrest in pigs (experimental study)

Khubulava G.G., Naumov A.B., Marchenko S.P., Suvorov V.V., Averkin I.I., Nevmerzhitskaya O.V., Zaytsev V.V., Seliverstova A.A., Andreyev V.V., Vlasenko S.V.

Abstract

Cardiopulmonary resuscitation (CPR) with closed-chest cardiac massage was developed to maintain circulation and ventilation until life-threatening problems could be corrected or reversed. Studies on the effect of CPR have shown that about 80-95 % cases of resuscitation are fatal or severe neurological consequences and survival to discharge after CPR ranged from 6 to 22 % [2, 4, 8, 11]. Furthermore, the chances of survival decline rapidly if the resuscitation period more than 10 minute. At the same time, we know that successful neurologic outcomes are inversely associated with the time of brain hypoperfusion. Because of the low survival rate after prolonged CPR, more aggressive methods have been suggested to increase success. With the advancement of techniques, extracorporeal mechanical support has been applied in conjunction with CPR, with variable results [5, 12]. To assess the efficacy of resuscitation with extracorporeal membrane oxygenation was modeled the acute hypoxic cardiac arrest in pigs. Results of the study in the two groups demonstrate efficient switching method supporting circulatory support (ECMO) in the minutes of CPR. In the provision of an extended set of measures of cardiopulmonary resuscitation in the modeling of hypoxic cardiac arrest in animals in the group with ECMO received great survival to the end of the experiment, less expressed manifestations of acute heart failure. Intergroup comparison given the prerequisites for the development of protocols with the use of ECMO CPR, which would reduce the number of complications and death in patients undergoing cardiac surgery.
Pediatrician (St. Petersburg). 2014;5(4):20-26
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Isonymy as an indicator of inbreeding in child populations of Yamal and Gyda tundra

Avrusin S.L., Chasnyk V.G., Solodkova I.V., Sinelnikova Y.V., Bobko Y.N., Burtseva T.Y.

Abstract

It is known that the term «inbreeding» refers to a descendant of close relatives. As a result of inbreeding in the population the number of homozygotes increases and thus the number of heterozygotes reduces, which degrades the quality of the population (inbreeding-depression), since it increases the frequency of diseases associated with recessive genes in such children. In isolated populations individuals with adverse signs as a result of inbreeding eventually get culled of (Kirkpatrick et al., 2000). Decrease in genetic di-versity as a result of inbreeding, usually leads to that the individual and the population lose their ability to adapt to changing environmental conditions, as many body functions are genetically determined. Simple statistical calculations indicate that all human beings are relatives to some extend. The inbreeding coefficient can be determined by analyzing the family tree based on the number of ancestors to the shared ancestor for both parents. The purpose of this study was to determine the inbreeding coefficient by means of isonymic analysis of the population of 2043 Nenets and Khanty children living in the villages of the Yamal region as well as in tundra assigned to boarding schools located in villages Salemal, Panaevsk, Yar-Sale, Novy Port and Gyda of the Yamal-Nenets autonomous destrict. Inbreeding coefficient was calculated using marital isonymy to estimate the frequency of consanguineous marriages as a measure of inbreeding (Crow and Mange,1965). We calculated the frequency of prospective isonymic marriages for individual Nenets and Khanty surnames for inhabitants of Yar-Sale, Salemal, Panaevsk, Novy Port and Gyda tundra. In Gyda tun-dra for one of the not very common in the region surnames the highest frequency of prospective consanguineous marriages was revealed (0.189). Values of the coefficient of random inbreeding for inhabitants of Yamal and Gyda tundra vary from 0.02 to 0.058 which is much higher than for example in the population of one of the Yakutia regions (0.0007) (Kucher et al., 2010) or in the population of Kirovsk region (0.00321-0.01063) (Kadyshev, 2011). In the population of Gyda tundra we revealed the highest coefficient of random inbreeding (0.058), which is the third world‘s largest value pub-lished to date.
Pediatrician (St. Petersburg). 2014;5(4):27-41
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Hepcidin: a promising marker for differential diagnosis of anemia and macrophage activation syndrome in children with juvenile idiopathic arthritis

Egorov A.S., Fedorova E.V., Chasnyk V.G., Kostik M.M., Snegireva L.S., Kalashnikova O.V., Dubko M.F., Masalova V.V., Likhacheva T.S.

Abstract

Hepcidin is a 25-amino acid peptide, which is a key systemic regulator of iron metabolism. As considered, overproduction of hepcidin in the liver is controlled by high levels of proinflammatory cytokines. Is it known that interleukin-6 play a key role in the development of anemia in patients with juvenile idiopathic arthritis (JIA). However, IL-6 blockers itself may provoke the onset of Macrophage Activation Syndrome (MAS), manifesting, particularly, also with anemia. In view of the fact that macrophages involved in MAS express CD163 - a scavenger receptor that binds hemoglobin-haptoglobin complexes - and activate the pathways which are important for adaptation to oxidative stress induced by free iron, we can consider hepcidin as a welcome challenge to predict the development of MAS early in the course of the disease. During the study of 35 patients with JIA treated with biological disease-modifying drugs (tocilizumab and golimumab), direct relations between the level of hemoglobin and hepcidin were not found. However, it was found that the mean corpuscular hemoglobin level is associated with hepcidin concentration in patients with JIA. It was found that concentration of serum hepcidin may be used for early differential diagnosis of anemia and MAS in patients with JIA. High probability of evolution of anemia to MAS was found when concentration of hepcidin was <140 ng/mL and ferritin >160 g/L. The following combinations were associated with high probability of evolution of slight anemia to a severe form, but not to MAS: 1. hepcidin >200 ng/mL and ferritin <140 g/L; 2. hepcidin >140 ng/mL and soluble transferrin receptor <1.6 mg/L; 3. hepcidin >140 ng/mL and total iron binding capacity >46 mcmol/L. Misclassification should be assessed during further studies.
Pediatrician (St. Petersburg). 2014;5(4):42-47
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Efficacy of golimumab in children with polyarticular juvenile idi-opathic arthritis

Kuchinskaya E.M., Kostik M.M., Snegireva L.S., Kalashnikova O.V., Dubko M.F., Masalova V.V., Likhacheva T.S.

Abstract

Golimumab is a human anti- monoclonal antibody against tumor necrosis factor alpha (TNF-α) TNF-α is one of the main proinflammatory cytokines taking part in JRA’s (juvenile idiopathic arthritis) pathogenesis. To compare with currently used tumor necrosis factor inhibitors golimumab therapy has high compliance because of low pain in the site of injection and long half-life period. The efficacy of golimumab was demonstrated earlier in adults with rheumatoid arthritis, spondyloarthritis and psoriatic arthritis. 10 children with active polyarticular JRA despite previous methotrexate treatment were enrolled in randomized study. All patients received subcutaneous golimumab 30 mg/kg every 4 weeks. At week 16 patients were randomly assigned to one of two treatment arms: 4 of them received placebo, others continued subcutaneous golimumab at the same dose. 3 of 4 children who received placebo later continued golimumab because of confirmed flare. Assessments were performed at week 24 and at the moment of last visit available for assessment (week 96-week 116) Dynamics of main clinical and laboratory disease activity measures were evaluated, including JA-DAS and CDAI dynamics and ACRPedi response criteria. During this study the majority of patients showed significant improvement of disease activity measures and their components with good ACR-Pedi response without serious adverse events and significant changes in blood count (erythrocytes, leukocytes and hemoglobin). According study results, golimumab can be evaluated as effective and quite safe therapy of polyarticular JRA.
Pediatrician (St. Petersburg). 2014;5(4):48-52
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Hypothesis about the protective role of ccr5delta32 mutations in juvenile idiopathic arthritis: fiction or reality?

Fedorova E.V., Egorov A.S., Ammosova T., Avrusin S.L., Santimov A.V., Kostik M.M., Dubko M.F., Kalashnikova O.V., Masalova V.V., Likhacheva T.S., Snegireva L.S., Grom A.A., Nekhai S., Chasnyk V.G.

Abstract

It is suspected that the prevalence in different ethnic groups of HLA-genotype and of mutation CCR5delta32 - factors which alter adhesion of protein CCR5 - are the causes of different prevalence of juvenile idiopathic arthritis in different ethnic populations. Prerequisites to the fact that the mutation CCR5delta32 may have importance in determining susceptibility to the disease were the observations showing that CCR5 deletion polymorphism reveals a population and geographic diversity in addition to ethnic specificity. But reports on the role of gene deletion in the CCR5 chemokine receptor susceptibility to JIA rather contradictory. 234 DNA samples of patients with systemic JIA (soJIA) were ana-lyzed. The diagnosis was made according to the ILAR criteria. DNA was isolated using QIAamp Mini Kit (QIAGEN) according to the protocol provided. Our results didn’t reveal any differences in prevalence of mutation in patients with soJIA, in patients with soJIA + macrophage activation syndrome and in total population. Our results do not support the idea of protective role of the muta-tion CCR5delta32 against soJIA, which conclusion can be explained also by probable association of soJIA with HLA-genotype or other factors of ethnicity. At the same time, it can be considered as an additional evidence of expediency of soJIA being an original disease different from the rest of JIA group of diseases.
Pediatrician (St. Petersburg). 2014;5(4):53-59
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Outcomes of treatment of juvenile idiopathic arthritis related uveitis with TNF-alpha inhibitors

Gaidar E.V., Kostik M.M., Snegireva L.S., Dubko M.F., Masalova V.V., Serogodskaya E.D., Macijevska A.S., Hynes A.

Abstract

The aim of the study was to evaluate the efficacy of two anti-TNF-alpha biological agents: Adalimumab (humanized monoclonal anti-TNF-alpha antibody) and Infliximab (chimeric monoclonal antibody that binds both circulating and membrane-bound TNF-alpha receptors) in treatment of Juvenile Idiopathic Arthritis related uveitis. 37 children (73 % girls) with uveitis associated with aggressive forms of JIA who failed Methotrexate and topical treatment; Methotrexate and other immunosuppressive agents and systemic corticosteroids were included in the study. The age of patients at the beginning of biological therapies ranged 5-17 years. In ADA group the remission was observed in 61 % of cases, in 18 % we saw the reduction of flare-ups and in 14 % of children we registered exacerbation of the disease which was caused in most cases by discontinuation of non-biological drug. In INF group we observed remission in 78 % of the cases, no improvement in 22 %. The speed of remission in JIA associated uveitis treated with ADA and INF depended on the severity of uveitis, the time between the beginning of the disease and administration of immunosuppressive therapy. Early administration of anti-TNF-alpha agents, when there is no results from standard immunosuppressive therapy, allowed us to achieve remission in a shorter period of time and also allowed as to decrease the severity of complications of uveitis, as well as reduce the side effects of immunosuppressive therapy, especially of corticosteroids. This study needs to be continued to enroll more patients and to increase the follow-up time to evaluate the long-term efficacy and safety of anti-TNF-alpha agents in JIA associated uveitis.
Pediatrician (St. Petersburg). 2014;5(4):60-64
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Prevalence of the CCR5 delta32 mutation in the tundra Nenets of Yamal

Ammosova T., Egorov A.S., Fedorova E.V., Avrusin S.L., Santimov A.V., Nekhai S.

Abstract

CCR5 delta 32 is a genetic variant of CCR5 - deletion mutation of a gene that has a specific impact on the adhesive function of T cells. It is believed that this mutation arose approximately two and a half thousand years ago and eventually spread in Europe. It has been hypothesized that this allele was favored by natural selection during the Black Death. In the heterozygotes, this mutation strongly reduces the chance of HIV infection In the homozygotes, it completely protects against HIV infection. CCR5 delta32 mutation in the heterozygous state occurs in Europe with a frequency of 5-14 %. The incidence of CCR5 delta32 outside of Europe is very low, and in many non-European ethnic groups it is completely absent. The prevalence of this mutation in the population of the Nenets has not previously investigated. It was assumed to have a lower frequency than in Europeans. We carried out an investigation with 54 blood samples of Nenets living in Yamalo-Nenets Autonomous District. DNA was extracted with was QIAamp DNA Mini Kit (QIAGEN) according to the manufacturer protocol. To identify the CCR5 delta32 deletion polymerase chain reaction was conducted using primers: CCR5-D32-F: 5`CTTCATTACACCTGCAGTC3`, CCR5-D32-R: 5`TGAAGATAAGCCTCACAGCC3` under the following conditions: 95˚-5’x1; 95˚-15” → 55˚-15” → 72˚-60”x40; 72˚-10’x1 → 4˚-∞. Products of the reaction were separated in 2 % aga-rose gel for 1.5 hours. Gel documentation was performed using a Gel Doc XR Plus (Bio-Rad, USA). The prevalence of CCR5 delta32 mutation in Nenets was found to be 9.3 %. This was a higher than expected frequency, and it corresponds to the average prevalence of CCR5 delta32 mutation in Europe. Our finding suggests possible European origin of the Nenets.
Pediatrician (St. Petersburg). 2014;5(4):65-69
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Climate change, human health and well-being in Yakutia

Shadrin V.P., Burtseva T.Y., Avrusin S.L., Solodkova I.V.

Abstract

The study was designed as a community survey conducted face-to-face with an in-person interview. The 145 subjects living in 8 rural settlements were reviewed. Data presented show that in total the most impressive changes are registered for the following signs: thinner ice on rivers, water and ice in rivers more muddy, the number of sunny days greater, more difficult to predict good weather and beginning of spring, rivers and sea covered with ice later, hunting, fishing, gathering mushrooms and berries is not so successful and quantity of mosquitoes is greater than it has been 5 years ago. Everyday activities of hunters, fishermen and herders living in Yakutia have changed during the last 5 years due to climate change. People living in the central part of Yakutia are affected to a greater extent, which is associated with faster warming. Those changes are supposed to be the sources of the problems with long-term and short-term weather forecast, difficulties to travel along tundra and forest, reindeer grazing, problems with fishing, hunting, gathering mushrooms and berries. Tendencies of infant mortality and morbidity in the studied regions are not associated with climate change and though the morbidity in Yakutia has a tendency to grow both in adults’ and in children’s populations mostly due to increase in prevalence of the diseases of the respiratory, circulatory and digestive system, this fact can hardly be associated with climate change.
Pediatrician (St. Petersburg). 2014;5(4):70-76
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Characteristics of pregnancy as determinants of cardiac oscillator of a baby in the early neonatal period of life

Wakah A., Solodkova I.V., Kornishina T.L., Malkina E.V., Shadrina O.V., Adrianov A.V., Chasnyk V.G.

Abstract

In order to assess the influence of course of pregnancy upon rate and rhythm of heartbeat of a baby in the early neonatal period of life, parameters of babies’ cardiac oscillators were described in terms of power spectral density function calculated for rows of 100-250 consecutive ECG RR-intervals registered during orthodox sleep. Correlation of heart rhythm characteristics, ECG patterns of a baby during first 5 days after delivery and parameters of pregnancy described both in terms of nosology and symptoms (122 parameters in total) were analyzed. 160 newborns were enrolled in the study. Drug abuse, impossi-bility to fill in the query form or informal consent, severe disease of baby, gestational age less than 28 weeks and/or body weight at birth less than 1500 grams were specified as major exclusion criteria. It was shown that preeclampsia during the first half of pregnancy and women’s illness, associated with body temperature higher than 38 degrees Celsius after 8 week of pregnancy are among major determinants of babies’ cardiac oscillator in the early neonatal period of life, but they don’t affect the ECG wave amplitude and the duration of PQ and QT intervals. Pregnancy complicated during the first half promotes bradycardia and high heart rate variability and pregnancy complicated during the second half promotes tachycardia and low heart rate variability in babies during at least 5 days after delivery. Hypothetical spatial models of pacemaker areas were proposed for cases of normal pregnancy, pregnancy complicated in the first half and pregnancy complicated in the second half.
Pediatrician (St. Petersburg). 2014;5(4):77-84
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Formation of sensorimotor mechanisms in syllable production during the initial stage of reading acquisition

Kornev A.N., Stoljarova E.I., Galperina E.I., Guillemard D.M.

Abstract

Cognitive mechanisms of reading skills in children are not well understood. With regard to the Russian language this question has not been studied at all. Due to the nature of Russian language a central position in the development of reading skill takes sounds blending into syllable. The paper deals with longitudinal evaluation of phonetic and temporal characteristics of sounds blending into syllable in Russian-speaking 1st grade pupils (7 years old) during the initial stage of reading acquisition (namely, the subjects were not yet able to read whole words). The hypothesis of this study is the assumption of co-existence of a few individual-typological strategies of mastering the reading skills. The experiment involved 40 pupils that have not yet mastered the skill of reading whole words to the beginning of training in first class. The study was conducted individually and consisted of two types of tests: I - reading stimuli (letters, syllables, words, pseudowords) and II - the repetition of similar auditory stimuli. Phonogram was analyzed by the software PRAAT 5.2.16, Gold Wave and original computer program. Timing and phonetic characteristics of reading letters and syllables (CV, VC) were estimated, also simultaneity recognition index of syllable in children was calculated. There were statistically significant differences in the basic phonetic and temporal characteristics between the results at the beginning of 1 grade (E1) and after 3 months (E2). Individual qualitative and quantitative typological peculiarities were shown that during the reading skills development children turn from sequential to parallel mode of graphic syllable processing and synthesis of phonetic syllable. Individual strategies and schemes in reading development among the 1st grade pupils are also discussed in the paper.
Pediatrician (St. Petersburg). 2014;5(4):85-94
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Characteristics of the immune response in children with atopic desoders

Gurina O.P., Dementyeva E.A., Blinov A.E., Varlamova O.N., Timokhina V.I.

Abstract

The study of the immune status of immunopathological reactions and spectral sensitization in children with atopic dermatitis (215 children) and atopic bronchial asthma (197 children) aged 1 month to 17 years. The immune status was investigated by immunological tests of first level, subpopulations of lymphocytes by flow cytome-try, allergodiagnosis, diagnosis of autoimmune antibodies-enzyme-linked immunosorbent assay. Defined heterogeneity of immune system disorders, age-related features of sensitization to the household, food, epidermal and other allergens, the production of IgG autoantibodies to tissue antigens. The study of lymphocyte subpopulations indicates the presence of differences in the cellular immune re-sponse in children with atopic dermatitis and atopic asthma. The allergens that accumulate in the body have a direct effect on the functional activity of phagocytes. The study of the immune status in children with atopic allergic diseases it is necessary to conduct a reasonable individual pathogenic immune to improve the effectiveness of standard therapy, reduced the severity of the disease, frequency of exacerbations, and reduce the frequency and severity of comorbidity. Determination of specific IgE to a wide range of aller-gens, it is recommended to include in the scheme is mandatory labo-ratory examination of patients with atopic allergies. During the ex-amination and treatment of patients suffering from allergic diseases, it is necessary to consider the possibility of the presence of concomitant fungal sensitization. Measures to eliminate significant causal allergens should include correction of the child’s nutrition, control over the environment and the remediation of foci of chronic infection and normalization of the intestinal microflora. Immunore-habilitation children with allergopathology should be carried out taking into account the possible presence and activity of the auto-immune process.
Pediatrician (St. Petersburg). 2014;5(4):95-103
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Temporary biventricular pacing after cardiac surgery: a method of supporting cerebral perfusion

Naumov A.B., Didenko M.V., Marchenko S.P., Suvorov V.V., Averkin I.I., Pasenov G.S.

Abstract

One of the main aims in postoperative period after cardiac surgery is the improving good systemic hemodynamics. In this connection after the cardiac operation it is necessary to use temporary pacing. In literature we can find a lot of methods of application temporary pacing, but what is better we don’t know. Routinely, in cardiac surgical procedures, epicardial pacing leads are placed on the right atrium and right ventricle in case of significant bradycardia or the development of atrioventricular block. It has been reported previously that right atrium - right ventricle pacing may induce left ventricle dyssynchrony and hemodynamic compromise compared with atrial pacing alone. On the other hand, it has recently been suggested that right atrio-biventricular pacing may improve hemodynamics in postcardiac surgery patients. However, this conclusion is not clear in the clinical setting. And may be we will be able to reduce the doses of inotropes, if we will be use method of right atrio-biventricular pacing [16, 20]. Temporary atrio-biventricular pacing improves cardiac output after open-heart surgery and whether ventricular pacing optimization increases cardiac output in this setting. We will examine which forms of cardiac dysfunction benefit from temporary pacing using direct and indirect measures of perfusion and cardiac function. We will also analyze hemodynamics effect after cardiac operation with different setting of pacemaker. The results of our study demonstrate the high efficiency of temporary biventricular pacing, achieved the best hemodynamic effect compared with other methods of temporary pacemaker.
Pediatrician (St. Petersburg). 2014;5(4):104-109
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Pathophysiological principles for evaluating hemodynamic

Marchenko S.P., Khubulava G.G., Naumov A.B., Seliverstova A.A., Cipurdeeva N.D., Suvorov V.V., Nevmergitskaiy O.V., Alexandrovich U.S., Kulemin E.S.

Abstract

The diagnosis and treatment of patients with hemodynamic disorders is basing of the understanding the physiology and pathophysiology of cardiovascular system. The relationship between length of muscle fibers and power reduction were first time revealed by Fick. Otto Frank was formulated fundamental principles of contractility of cardiomyocytes. Straub and Wiggers in 1914 was described the mail principles of the right ventricle work. Ernest Starling was performed a series of experiments, which explore a dependence of left ventricular ejection from venous inflow and elastic resistance of the aorta. In 1914 Ernest Starling was published research result, which describe how the mechanical energy of heart beats is depend from length fiber. Another essential part of knowledge of this problem was discovered by Aurtur Guyton experiments. Guyton has been established that there is a linear relationship between the pressure in the right atrium and the venous return. The lack of quantitative assessment of volume status has led to a qualitative approach, de-scribed by the term “response to the volume load.” However, as pointed out by some authors [16, 29], it is important to remember that the response to the preload is not a pathological condition. A quantitative approach to the assessment of volume status is based on the concept of Guyton on average system pressure filling, theoretically independent of cardiac function. This approach is used clinically. In this review article we describe possibility of clinical application of all knowledge of this questions.
Pediatrician (St. Petersburg). 2014;5(4):110-117
pages 110-117 views

Current diagnostics of the childhood urolithiasis

Emanuel V.L., Chukhlovin A.B., Tretjak A.T., Vostokova L.P., Sevostianova M.Y.

Abstract

The review considers diagnostic aspects of renal stone disease, or urolithiasis (UL) in children. Population prevalence and clinical features of pediatric UL are under discussion, along with most effective visualization approaches. Different risk factors of the kidney stone disease are considered, including various metabolic, climatic and ecological disorders, e. c., hyperoxaluria, hypercalciuria, certain local microbial infections, such as Proteus mirabilis, Corynebacterium urealytica, Ureaplasma urealytica etc.) Some specific features of clinical symptomatology in childhood urolytiasis are also under consideration. Protective mechanisms of the local Tamm-Horsfall protein and high citrate production are discussed. This protein performs some antiinfectious functions, as well stabilizes a complex salt balance in the urine, thus increasing solubility threshold for the salts. We have noted that prevalence of the high-molecular-weight 28 MDa isoform of the Tamm-Horsfall protein over the 7-MDa form seems to be an important protective factor in potential development of urolytiasis. We mention here a number of rare genetic syndromes is listed which cause specific inherited disorders of calcium, hyperoxaluria, or uric acid salts accumulation. In summary, we postulate a need of individualized diagnostics of urinary metabolic markers in the UL patients, in order to arrange metaphylactic measures, in order to prevent recurrent formation of kidney stones and possible urolythiasis episodes in future.
Pediatrician (St. Petersburg). 2014;5(4):118-126
pages 118-126 views

EurAsia Heart - international cooperation in cardiovascular surgery

Vogt P.R., Khubulava G.G., Marchenko S.P.

Abstract

Cardiovascular diseases are the major cause of death in neonates, children, adolescents and adults. Untreated congenital heart disease is the major cause of death worldwide in children younger than five years of age, exceeding the combined death rate caused, e.g. by malaria, tuberculosis or HIV [6]. In many developing countries, life expectancy is limited to an average of 58 to 64 years of age [1, 2]. In addition quality of life is markedly reduced while the number of disabled patients and patients depending from social welfare is steadily increasing. The major cause is undiagnosed and untreated cardiovascular diseases. Eighty percent of all cardiovascular deaths worldwide occur in developing countries [3]. Cardiology and cardiovascular surgery are powerful tools to increase the life expectancy, to improve and normalize the quality of life, to preserve patients able to work and to reduce the overall health care costs as well as costs for social welfare for those otherwise disabled by chronic cardiovascular diseases. Developing countries invest in cardiology and cardiovascular surgery. However, the establishment of a cardiovascular centre is a challenging task. The problem is that several specialties have to be developed simultaneously: cardiology, cardiac surgery, perfusion techniques, anaesthesia, intensive care as well as postoperative medical treatment - for adults and for children. The attractiveness of EurAsia Heart Foundation allowed establishing numerous international co-operations with excellent institutions, interested and engaged in teaching and education abroad.
Pediatrician (St. Petersburg). 2014;5(4):127-131
pages 127-131 views

Internet Addiction: Causes, Formation Mechanisms, Diagnosis, Treatment and Prevention Approaches

Titova V.V., Katkov A.L., Chugunov D.N.

Abstract

The article examines the main causes and mechanisms of Internet and video game addiction providing a detailed description of the characteristics of social groups most vulnerable to addiction, as well as the clinical and psychopathological symptoms allowing for the verification of computer addiction. Special attention is paid to the methods for the rapid psychological diagnosis of computer addiction as well as to identifying predisposition through the use of large-scale testing of young people. The Internet for computer addicts is practically a perfect way to quickly fill almost any unfulfilled needs, including the need for security, respect, love, recognition, and self-actualization. This explains the fact that the social groups most vulnerable to Internet addiction are adolescents, among which the prevalence of Internet addicts in some regions is estimated to be up to 38%, studies report. We conducted a survey of humanities and non-humanities students in St. Petersburg. The total sample size was 120 people, of whom 60 persons were humanities students and 60 people, students at technical universities. On average, the subjects were aged 22 to 23. 100 % of the subjects had a computer and free internet access. The article details the results of the study and analyzed. The key element of this paper is a model for computer addiction psychotherapy based on the concept of achieving high levels of psychological health, developing an ability to avoid using drugs, as well as the model for preventing Internet addiction among risk groups.
Pediatrician (St. Petersburg). 2014;5(4):132-139
pages 132-139 views

Medical electronic resources on practical lessons on human anatomy

Nikonorova M.L., Karelina N.R.

Abstract

For new tasks, in modern conditions must be prepared for lifelong learning, continuous improvement, retraining and self-education, professional mobility. Actuality the ideas contained in this article is to introduce new educational technologies and active learning at the Department of Human Anatomy. Virtual learning tools allow you to add in practical exercises, including anatomical dissection, extensive computer technology and optimize the learning process, contribute to a more depth study of anatomy. Application programs are recommended for independent work of students on the study of morphological and functional sections of human anatomy; self-correction and learning. The experience of resource use Primal Pictures in medical universities. This article describes a real possibility of integrated lessons in Anatomy and Informatics. From the standpoint of Fokine RR, when teaching Informatics advisable to convert your existing methods, forms and means of teaching in open learning system. Application of multilevel hierarchies based on the theory of open systems subject to adapt it to pedagogy will help develop methods of teaching computer science on the basis of which it is possible to build different models to optimize learning and teaching process. Instruction and work in such systems will promote the rise of and development of professional competency.
Pediatrician (St. Petersburg). 2014;5(4):140-145
pages 140-145 views


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