scholarly journals Prevalence of premature birth in conditions of global warming

2021 ◽  
Vol 26 (3) ◽  
pp. 152-161
Author(s):  
V.I. Tsymbaliuk ◽  
S.N. Vadziuk ◽  
T.I. Tolokova ◽  
P.S. Tabas
Keyword(s):  
Global Warming ◽  
Preterm Birth ◽  
Adverse Effects ◽  
Air Temperature ◽  
Premature Birth ◽  
Preterm Births ◽  
Annual Number ◽  
Premature Births ◽  
Negative Consequences ◽  
Homogeneous Regions

The dynamics and likely associative link between global warming and the prevalence of preterm births in Ukraine over the years 2009-2018 was studied. to form modern ideas about the prognosis and prevention of this pathology. Data on medical care for pregnant women, mothers and parturients and adverse effects of pregnancy on preterm birth (form 21) for the period 2009-2018 were obtained from the municipal non-profit enterprise "Ternopil Regional Center of Public Health of Ternopil Regional Council". The correlation between the number of premature births per 100 births according to the average annual air temperature according to the Global Historical Climatology Network from the US Department of Ocean and Atmospheric Research in the climatically homogeneous regions of Ukraine was estimated. Predictive analysis of time series was performed by the method of integrated auto-regression of the moving average (ARIMA). The model error was estimated by calculating the absolute percentage error of the mean (MAPE). Statistical processing of materials was performed using programs Statistica 6.0 (StatSoft, USA) and open statistical package "R". The study meets modern requirements of moral and ethical standards regarding the provisions of legislative acts of Ukraine.  Analysis of these reports of women's counseling shows an increase in the average number of preterm births from 2.88 per 100 births in the total number of births in Ukraine – 491445 in 2009 to 3.33, per 100 births in the total number of 309191 in 2018, which testifies to  a significant increase in premature births in our country. Since 2009, there has been an annual, varying degree of increase in average annual air temperature in Ukraine. As a result of the correlation analysis, a significant strong direct correlation was established between the average level of premature birth and the average annual air temperature in Ukraine (r=0.84, p<0.05). Regression analysis revealed a significant increase in the number of premature births (per 100 births) in 1, 2, 5, 6, 7, 8 and 10 climatically homogeneous regions and a tendency to increase in, respectively, 3, 4, 9, 11 and 12 climatically homoge­neous regions of Ukraine.  Based on the analysis of data on the average annual air temperature in Ukraine for 2009-2018, the average annual air temperature in Ukraine is projected to increase by 0.3 ° С in 3 years (MAPE <10%, p<0.05). The annual number of premature births is expected to increase (cases per 100 births) in 3 years by 0.4 cases per 100 births (MAPE <10%, p <0.05). In the context of global warming, the number of negative consequences of pregnancy is increasing, namely idiopathic premature termination of pregnancy with the birth of premature infants. Strong correlations have been established between the annual number of premature births and the average annual air temperature in Ukraine. Regression models of preterm birth showed a significant increase in 1, 2, 5, 6, 7, 8, and 10 cli­matically homogeneous regions and a tendency to increase in 3, 4, 9, 11 and 12 climatically homogeneous regions. The annual number of premature births in Ukraine is projected to increase by 2023 by 20 cases per 100 births compared to 2018. The strategy for preventing premature births and related adverse effects of pregnancy should include the identification of global warming as a risk factor for increasing level of this pathology.

scholarly journals EPIDEMIOLOGY AND RISK FACTORS FOR PREMATURE BIRTH

2018 ◽  
Vol 28 (2) ◽  
pp. 629-636
Author(s):  
Anna Mihaylova ◽  
Nikoleta Parahuleva ◽  
Elina Petkova-Gueorguieva ◽  
Stanislav Gueorguiev
Keyword(s):  
Risk Factors ◽  
Preterm Birth ◽  
Prenatal Care ◽  
Premature Birth ◽  
Assisted Reproductive Technologies ◽  
Preterm Births ◽  
Developed Countries ◽  
Reproductive Technologies ◽  
Risk Indicators ◽  
Etiological Factors

Premature birth is a significant medical, social and economic problem worldwide. In the 21st Century in developed countries, this problem accounts for over two thirds of neonatal deaths. In Bulgaria, statistics show that 10-12% of all pregnancies end with premature birth. Despite the number of studies in this field and the efforts made by obstetricians and gynecologists, the tendency to increase the number of preterm births has continued in the last decade. Its consequences are multiple complications who lead to a high neonatal mortality in the national and global world. Preterm birth is characterized by complex and vague etiology. A specific cause of premature birth can not be defined, but a set of risk factors is considered, divided into three main groups of etiological factors: socio-economic, medical-biological, and behavioral. Associated with preterm birth socio-economic and behavioral risk factors include poverty, unemployment, low education, poor prenatal care, harmful habits such as smoking, alcohol, drugs and other harmful substances, unhealthy family environment, severe and prolonged stress, excessive physical exercise (lifting weights), trauma (hits or violence), new pregnancies less than 6 months after previous birth, unhealthy diet and low mother BMI, etc. Essential for the preterm birth is also the medico - biological etiological factors. One of these is uterine enlargement, as the main reason for this may be the presence of: multiple pregnancies that occurred naturally or after using assisted reproductive technologies or polyhydramnios (increased amount of amniotic fluid). Other risk factors include: placenta previa, incorrect position of the fetus, myoma, uterine cervix malformations (including cerebrovascular insufficiency), preeclampsia, uterine contractions, acute infections during pregnancy (vaginal - chlamydia, trichomonas, mycoplasma , toxoplasmosis, bacterial vaginosis, viral rubella, cytomegalovirus, herpes, influenza, adenovirus infection, chronic diseases (hypertension, cardiovascular diseases, diseases of the lungs, liver or kidney anemia and etc.), genetic factors, previous premature birth, etc. These risk indicators are subject to detailed analysis in the work of a number of authors. To limit preterm births, a number of studies have been conducted to identify and identify the risk factors that are relevant to it. Identifying and recognizing their effects and impact leading to premature birth will significantly reduce the severe health, economic and social consequences as well as reduce the risk of neonatal death. In order to reduce the frequency of preterm births, adequate and specialized prenatal care is essential. They must be individually tailored for each particular case of pregnancy and take into account the complex of risk predispositions.

scholarly journals Prognostic possibilities of relaxin as a marker of preterm birth

2018 ◽  
Vol 67 (2) ◽  
pp. 16-25
Author(s):  
Olga V. Kosyakova ◽  
Olesya N. Bespalova
Keyword(s):  
Premature Birth ◽  
Preterm Labor ◽  
Preterm Births ◽  
Diagnostic Techniques ◽  
Diagnostic Methods ◽  
Premature Delivery ◽  
Premature Births ◽  
Additional Time ◽  
Childhood Morbidity ◽  
Life Threatening

Premature birth is one of the most important problems of modern obstetrics because it is a leading cause of childhood morbidity and mortality in all countries. Annually, > 1 million premature newborns worldwide die from various types of complications, and most of the survivors become disabled. Moreover, according to WHO analysis, most of these children can be saved by developing measures for the early identification of preterm births, which will provide additional time for effective intervention. Currently, available diagnostic methods do not adequately assess the risks of premature delivery owing to the low predictive value of the methods. This makes it necessary to search for predictors of preterm labor that can improve the accuracy of diagnostic techniques. The desired predictors should have a pathogenetic basis, and most importantly, they must contribute to the early detection of life-threatening premature births. The hormone relaxin could be considered to be a promising marker of premature birth because its role in the pathogenesis of premature birth is unquestionable, and the evaluation of its levels is possible during the early stages of pregnancy.

scholarly journals PREGNANCY RELATED PLASMA PROTEIN–A AND PREMATURE BIRTH

2021 ◽  
Vol 19 (2) ◽  
pp. 172-177
Author(s):  
Iv. Todorov ◽  
N. Tododrov ◽  
M. Angelova ◽  
K. Peeva
Keyword(s):  
Preterm Birth ◽  
Pregnant Women ◽  
Plasma Protein ◽  
Premature Birth ◽  
Chromosomal Abnormalities ◽  
Placenta Previa ◽  
Protein A ◽  
Preterm Births ◽  
Sonographic Examination ◽  
Increased Risk

Introduction: Children born prematurely are at higher risk of mortality, morbidity, and impaired motor and cognitive development in childhood than prematurely born babies. Aim: To establish the relationship between the corresponding levels of pregnancy-related plasma protein-A (PAPP-A) and the frequency of premature birth. Materials and methods: The study is prospective. The data was collected through monitoring patients through a questionnaire and sonographic examination at 11-13 gestational weeks. The study excluded all known risk factors for preterm birth, such as previous preterm births, pregnant women with gestational diabetes, preeclampsia, hypertension, placenta previa, hydramnion, multiple pregnancies, smoking, structural and chromosomal abnormalities of the fetus and planned preterm birth. The data from the measured values of PAPP-A and the frequency of premature birth in 636 pregnant women were analyzed. Conclusions: PAPP-A levels are a statistically significant factor for preterm birth. It is expected with a 95% probability in the population with PAPP-A values below 0,515 that the cases with premature birth will be from 7 to 14 times more. Pregnant women with PAPP-A level less than 10th per cent are significantly associated with an increased risk of preterm birth.

Pregnancy Anemia as a Favorable Factor of Premature Birth

2018 ◽  
Vol 69 (7) ◽  
pp. 1886-1888
Author(s):  
Alexandru Oancea ◽  
Casiana Stanescu ◽  
Diana Maria Anastasiu Popov ◽  
Radu Neamtu ◽  
Doru Anastasiu ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Growth Retardation ◽  
Premature Birth ◽  
Intrauterine Growth Retardation ◽  
Preterm Births ◽  
Premature Births ◽  
Intrauterine Growth ◽  
Economic Context ◽  
Hb Concentration ◽  
In Pregnancy

Hematological physiological changes during gestation are intended to compensate and support pregnancy-related changes in the woman�s body. In pregnancy there is a dilution of the known Hb concentration known as gestational hemodilution or physiological pregnancy anemia. On a group of 300 pregnant women with different forms of anemia, we followed its implications on the evolution of pregnancy, its role in the determinism of premature labor, and its role in the apparition of intrauterine growth retardation. In 46 cases (15.33%) we reported premature births, in 23 (7.66%) of the cases we considered that anemia was the main (unique) cause of premature birth, in other cases (84.67%) anemia associated with other etiologic factors of premature birth. Comparing the incidence of preterm birth with a group of 300 pregnant women without anemia revealed the incidence of premature birth is 3 times less and is represented by 12 cases (4%) and 2 times less for intrauterine growth retardation represented by 16 cases (5.33%). Pregnancy anemia can cause a frequent pathology with major consequences in pregnancy development during birth and fetal development involving 15.33% of preterm births and 12.35% of cases of intrauterine growth retardation. In the current social and economic context, it is necessary to prophylactically administer iron for pregnant women from 20 weeks of gestation, at least 30mg / day for prophylaxis of pathology due to iron deficiency.

Is there a Link between Preterm Birth and In Utero Exposure to Climate Change?

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Panait ED ◽  
◽  
Balaceanu-Stolnici C ◽  
Glavce CS ◽  
Moga MA ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Premature Birth ◽  
Birth Rate ◽  
In Utero ◽  
Pediatric Care ◽  
Obstetrics And Gynecology ◽  
In Utero Exposure ◽  
Premature Births ◽  
Climate Conditions ◽  
Clinical Hospital

Aim: The aim of this study is to clarify if there is a link between preterm birth and temperature as a climate factor. Our study comes after a long period of clinical experience that rose the suspicion of a possible correlation between temperature variation and peaks of premature births. Materials and method: We conducted a retrospective study on the number of births registered at the “Dr. I.A. Sbarcea” Clinical Hospital of Obstetrics and Gynecology in Brasov in 2018 and 2019. Data related to premature birth was further correlated to climate information regarding Brasov area obtained from the National Administration of Meteorology, Romania and to results of fertility statistics made publicly available by the Romanian National Institute of Statistics. Results: Our study group included 99 premature births registered at “Dr. I.A. Sbarcea” Clinical Hospital of Obstetrics and Gynecology in Brasov in 2018 and 127 in 2019. The premature birth rate peaks in August for both years of study: 2018 and 2019. Statistical data processing shows there is significant correlation between in utero exposure to extreme temperatures and registration of peaks of premature births. Conclusion: Recognizing a pattern of the raise in the premature birth rate may help the healthcare system to cope with the increased demands of the pediatric care units in time periods marked by specific climate context. Easy recognition of climate conditions that can consequently lead to a peak in the rate of premature birth can be useful for medical staff and patients.

Causes And Effects of Premature Delivery

2015 ◽  
Vol 22 (2) ◽  
pp. 67-71
Author(s):  
Кузибаева ◽  
R. Kuzibaeva
Keyword(s):  
Preterm Birth ◽  
Pregnant Women ◽  
Premature Birth ◽  
Demographic Data ◽  
Reproductive Potential ◽  
Early Period ◽  
Preterm Births ◽  
Morbidity And Mortality ◽  
Premature Delivery ◽  
Low Birth Weight Infants

Premature delivery is the leading cause of perinatal morbidity and mortality of newborns. The article presents the analysis of preterm birth in the perinatal center of Tula region. Depending on the causes of premature birth the author formed three groups. The 1-st group (n=32) included spontaneous preterm births, the 2nd group (n=115) -premature birth as a result of prenatal rupture of membranes, the 3st group (n=180) included preterm births for medical reasons. In all three groups, the demographic data, age, and parity were analyzed. The problem is the development of complex diagnostic techniques for the purpose of prognosis and preventive measures for pregnant women, because at present the obtained results do not allow us to accurately predict a preterm birth and to identify clearly the criteria for their possible development. Reduction of morbidity and mortality in newborns can be achieved through the timely identification of pregnant women at high risk, methods of prevention of preterm birth, quality of treatment and nursing of low-birth-weight infants [1]. This is of paramount importance not only in the formation of a healthy generation from a very early period of their lives and health, but also for the reproductive potential of women in the future [8].

scholarly journals Prematurely delivery — observation tactics with account to gestation terms

2002 ◽  
Vol 51 (2) ◽  
pp. 13-17
Author(s):  
Vladimir I. Kulakov ◽  
Vladimir N. Serov ◽  
Vera M. Sidelnikova
Keyword(s):  
Preterm Birth ◽  
Perinatal Mortality ◽  
Gestational Age ◽  
Premature Birth ◽  
Premature Births ◽  
Mortality And Morbidity ◽  
Fetal Malformations ◽  
Complicated Course ◽  
Timely Delivery ◽  
Period Of Gestation

Some disputable matters according to the problem of prematurely labor were presented in this article. The urgency of the problem is due to the fact that preterm birth determines the level of perinatal mortality and morbidity. The management of labor is determined by the gestational age. Termination of pregnancy in the period of 22-27 weeks is most often due to infection and fetal malformations, determined by this period of gestation. With a gestational age of 28-33 weeks, the percentage of indicated premature births is extremely high due to a complicated course of pregnancy (preeclampsia, placental insufficiency) and severe extragenital diseases. Premature birth at 34-37 weeks is close to timely delivery in terms of labor outcomes.

scholarly journals Risk factors associated with preterm birth in the Dominican Republic: a case-control study

BMJ Open ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. e045399
Author(s):  
Agustín Díaz-Rodríguez ◽  
Leandro Feliz-Matos ◽  
Carlos Bienvenido Ruiz Matuk
Keyword(s):  
Risk Factors ◽  
Preterm Birth ◽  
Dominican Republic ◽  
Case Control Study ◽  
Preterm Births ◽  
Case Control ◽  
Premature Births ◽  
Factors Associated ◽  
History Of ◽  
Control Study

ObjectivesThis study aimed to identify the risk factors associated with preterm birth, and to determine the prevalence of preterm births in the Dominican Republic.DesignCase-control study.SettingsSeven National Reference Hospitals from different regions of the Dominican Republic.ParticipantsA probabilistic sampling of both cases and controls was performed with a ratio of 2.92:1, and a power analysis was performed with α=0.05, P1=0.5, P2=0.6, and β=0.08, to yield a distribution of 394 cases and 1150 controls. Estimation of gestational age was based on neonatologist reports.Primary outcome measuresA protocol was created to obtain maternal and obstetric information.ResultsThe main risk factors were a family history of premature births (p<0.001, OR: 14.95, 95% CI 8.50 to 26.29), previous preterm birth (p=0.005, OR: 20.00; 95% CI 12.13 to 32.96), advanced maternal age (over 35 years; p<0.001, OR: 2.21; 95% CI 1.57 to 3.09), smoking (p<0.001, OR: 6.65, 95% CI 3.13 to 13.46), drug consumption (p=0.004, OR: 2.43, 95% CI 1.37 to 4.30), premature rupture of membranes (p<0.001, OR: 2.5) and reduced attendance at prenatal consultations (95% CI 6 to 7, Z=−10.294, p<0.001).ConclusionMaternal age greater than 35 years, previous preterm birth, family history of preterm births and prelabour rupture of membranes were independent risk factors for preterm birth. Adolescence, pregnancy weight gain and prenatal consultations, on the other hand, were protective factors for preterm birth. Although the prevalence of premature births in this study was 25%, this could have been biased.

Model for assigning security objects to a specific risk category in the field of fire safety

2020 ◽  
Vol 90 ◽  
pp. 19-31
Author(s):  
D. V. Zobkov ◽  
◽  
A. A. Poroshin ◽  
A. A. Kondashov ◽  
◽  
...  
Keyword(s):  
Adverse Effects ◽  
Fire Safety ◽  
Economic Activity ◽  
Fire Hazard ◽  
Risk Category ◽  
Negative Consequences ◽  
Acceptable Risk ◽  
Individual Object ◽  
Safety Requirements ◽  
Risk Categories

Introduction. A mathematical model is presented for assigning protection objects to certain risk categories in the field of fire safety. The model is based on the concepts of the probability of adverse effects of fires causing harm (damage) of various extent and severity to the life or health of citizens, and the acceptable risk of harm (damage) from fires. Goals and objectives. The purpose of the study is to develop the procedure for assigning protection objects to a certain category of risk of harm (damage) based on estimates of the probability of fires with the corresponding severity consequences, to determine the acceptable level of risk of harm (damage) due to the fires, to calculate and develop numerical values of criteria for assigning objects of protection to the appropriate risk categories. Methods. The boundaries of the intervals corresponding to certain risk categories are determined by dividing the logarithmic scale of severity of adverse effects of fires into equal segments. Classification methods are used to assign objects of protection to a specific risk category. Results and discussion. Based on the level of severity of potential negative consequences of a fire, risk categories were determined for groups of protection objects that are homogeneous by type of economic activity and by functional fire hazard classes. The risk category for each individual object of protection is proposed to be determined using the so-called index of "identification of a controlled person" within a group of objects that are homogeneous by type of economic activity and class of functional fire hazard. Depending on the risk category, the periodicity of planned control and supervision measures in relation to the specific object of protection under consideration is determined, taking into account its socio-economic characteristics and the state of compliance with fire safety requirements by the controlled person. Conclusions. To develop criteria for classifying protection objects that are homogeneous in terms of economic activity and functional fire hazard classes, the probability of negative consequences of fires, that are causing harm (damage) of various extent and severity to the life or health of citizens, and the acceptable risk of causing harm (damage) as a result of fires, is used. The risk category for each individual object of protection is determined taking into account socio-economic characteristics of the object that affect the level of ensuring its fire safety, as well as the criteriaof integrity of the subordinate person that characterize the probability of non-compliance with mandatory fire safety requirements at the object of protection. Calculations are made and numerical values of criteria for assigning protection objects that are homogeneous in terms of economic activity and functional fire hazard classes to a certain category of risk are proposed. Key words: object of protection, probability of fire, acceptable level of risk, risk category, dangerous factor of fire, death and injury of people.

scholarly journals A birth population-based survey of preterm morbidity and mortality by gestational age

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xiaojing Guo ◽  
Xiaoqiong Li ◽  
Tingting Qi ◽  
Zhaojun Pan ◽  
Xiaoqin Zhu ◽  
...  
Keyword(s):  
Birth Weight ◽  
Preterm Birth ◽  
Preterm Infants ◽  
Birth Defects ◽  
Gestational Age ◽  
Death Rate ◽  
Preterm Births ◽  
Mortality Rates ◽  
Morbidity And Mortality ◽  
Hospital Death

Abstract Background Despite 15–17 millions of annual births in China, there is a paucity of information on prevalence and outcome of preterm birth. We characterized the outcome of preterm births and hospitalized preterm infants by gestational age (GA) in Huai’an in 2015, an emerging prefectural region of China. Methods Of 59,245 regional total births, clinical data on 2651 preterm births and 1941 hospitalized preterm neonates were extracted from Huai’an Women and Children’s Hospital (HWCH) and non-HWCH hospitals in 2018–2020. Preterm prevalence, morbidity and mortality rates were characterized and compared by hospital categories and GA spectra. Death risks of preterm births and hospitalized preterm infants in the whole region were analyzed with multivariable Poisson regression. Results The prevalence of extreme, very, moderate, late and total preterm of the regional total births were 0.14, 0.53, 0.72, 3.08 and 4.47%, with GA-specific neonatal mortality rates being 44.4, 15.8, 3.7, 1.5 and 4.3%, respectively. There were 1025 (52.8% of whole region) preterm admissions in HWCH, with significantly lower in-hospital death rate of inborn (33 of 802, 4.1%) than out-born (23 of 223, 10.3%) infants. Compared to non-HWCH, three-fold more neonates in HWCH were under critical care with higher death rate, including most extremely preterm infants. Significantly all-death risks were found for the total preterm births in birth weight <  1000 g, GA < 32 weeks, amniotic fluid contamination, Apgar-5 min < 7, and birth defects. For the hospitalized preterm infants, significantly in-hospital death risks were found in out-born of HWCH, GA < 32 weeks, birth weight <  1000 g, Apgar-5 min < 7, birth defects, respiratory distress syndrome, necrotizing enterocolitis and ventilation, whereas born in HWCH, antenatal glucocorticoids, cesarean delivery and surfactant use decreased the death risks. Conclusions The integrated data revealed the prevalence, GA-specific morbidity and mortality rate of total preterm births and their hospitalization, demonstrating the efficiency of leading referral center and whole regional perinatal-neonatal network in China. The concept and protocol should be validated in further studies for prevention of preterm birth.

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