World Health Organization's Principles for Evaluating Health Risks in Children PDF

By World Health Organization

ISBN-10: 924157237X

ISBN-13: 9789241572378

This new quantity within the Environmental well-being standards (EHC) sequence presents a scientific research of the clinical ideas to be thought of in assessing overall healthiness hazards in young ones; making an allowance for their detailed susceptibilities. The phrases childrens and baby as utilized in this file contain the phases of improvement from belief via formative years. This new EHC builds on past volumes addressing methodologies for assessing hazards in childrens: EHC 30, rules for comparing health and wellbeing hazards to Progeny linked to publicity to chemical substances while pregnant (WHO, 1984) and EHC fifty nine, rules for comparing wellbeing and fitness hazards from chemical compounds in the course of Infancy and Early youth: the necessity for a unique method (WHO, 1986). The vital concentration of this quantity is at the baby (developing embryo, fetus, youngster, etc.) instead of on a particular environmental agent, goal organ, or disorder. therefore, it addresses the tough job of integrating all what's identified approximately either publicity details, toxicity information, and well-being consequence at various existence phases, that's specifically hard while information are constrained for specific existence phases (e.g., in the course of pregnancy). The booklet might be helpful to public health and wellbeing officers, examine and regulatory scientists, and threat assessors.

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Extra resources for Principles for Evaluating Health Risks in Children Associated With Exposure to Chemicals (Environmental Health Criteria) (Environmental Health Criteria)

Example text

Estimates from the 2000–2003 database attribute 37% of these deaths to neonatal causes, 19% to pneumonia, 17% to diarrhoea, 20% to “other” — including injuries, measles, and human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) — and 8% to malaria. Figure 1 also shows the major causes of neonatal deaths (birth to 28 days). The largest fraction of deaths (28%) is attributed to preterm births, which may also result in long-term adverse health consequences (see chapter 4). Thus, the perinatal and neonatal developmental stages can be considered particularly vulnerable periods.

S. , 2003). LGQH\V        $JH \HDUV Fig. 2. , 2001). 3 Skin A baby at full term has a mature skin with barrier properties similar to those of older children and adults. However, the hydration state of the epidermis is greater in neonates than in older children, suggesting the potential for some hydrophilic chemicals to be absorbed more efficiently and hydrophobic chemicals less efficiently. In preterm infants, the epidermal barrier is poorly developed, resulting in increased percutaneous absorption of chemical agents.

Moreover, these binding sites are occupied by endogenous substances, such as fatty acids, steroids, and bilirubin. Therefore, newborn infants have a lower capacity for binding exogenous chemicals to plasma albumin. The binding affinity may also be different in neonates and adults. The neonate–adult difference in albumin binding affinity for many drugs is likely related to the differences in the form of protein as well as the amino acid content of albumin (Alcorn & McNamara, 2003). The difference in volume of distribution between adults and children may not always lead to corresponding differences in blood or tissue concentrations.

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Principles for Evaluating Health Risks in Children Associated With Exposure to Chemicals (Environmental Health Criteria) (Environmental Health Criteria) by World Health Organization


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