Impairment permanent

Not all contaminants or chemicals are created equal in their capacity to cause adi ersc effects. Thus, cleanup standards or action levels are based in part on the compounds toxicological properties. Toxicity data are derived largely from animal experiments in which llie aninuils (primarily mice mid rats) are exposed to increasingly liighcr concentrations or doses. Responses or effects can vary widely from no obscn ablc effect to temporary and reversible effects, to permanent injury to organs, to chronic functional impairment to ultimately, death. 

Insects have demonstrated a remarkable ability to become resistant to insecticides. The use of an attractant upon which a species depends for survival, such as a sex lure emitted by the female, will probably be a permanent tool whether or not it is used with a toxicant since the insect s ability to reproduce will be seriously impaired if the male becomes less responsive to the scent that helps it find a mate (12). 

I required intervention to prevent permanent impairment/damage... 

I Required Intervention to Prevent Permanent Impairment/Damage (Devices)... 

Acute clinical signs of neurotoxicity, manifested by hyperexcitability, dyspnea, decreased respiration, tremors, and convulsions, were identified in the available literature as effects caused by high doses of endosulfan. Exposure to high levels of endosulfan in humans may possibly be associated with permanent brain damage as manifested by cognitive and emotional deterioration, memory impairment, and... 

Fjeld E, Haugen TO, Vollestad LA. 1998. Permanent impairment in the feeding behavior of grayling (Thymallus thymallus) exposed to methyhnercury during embryogenesis. Sci Total Envhon 213 247-254. 

In working with PCP and polydrug abusers who have impaired everyday functioning, counselors must be ultimately concerned with the individual s ability to recover. Objective prediction of recovery of function, using NP tests, involves a baseline evaluation and at least one repeated assessment. Patterns of NP strengths and deficits in the two or more assessments may then be compared. Clinical inferences can be made, describing skills that show relative permanence of deficit (with no change on repeated measurement), or... 

In humans, encephalopathy can occur at PbB levels as low as 100-120 pg/dL in some adults (Kehoe 1961a, 1961b, 1961c Smith et al. 1938) and at PbB levels as low as 80-100 pg/dL in some children (EPA 1986a NAS 1972). This condition can result in death or in permanent cognitive impairment, particularly in children. Furthermore, children with high PbB levels (>80-100 pg/dL) and symptoms of... 

Ischemia occurs when the blood supply to the heart muscle is temporarily or permanently reduced. The events which may cause ischemia include occlusion of a coronary artery, cardiac arrest, heart failure, a variety of arrhythmias, cardiopulmonary bypass, and aortic clamping during various cardiac operations. Such ischemia can possibly lead to infarction of the heart muscle and impairing of the heart [127],... 

Signs and Symptoms Symptoms are acute and include fever, headache, encephalitis, vesicular skin lesions at site of the exposure, and variable neurological patterns. Involvement of the respiratory center and death usually occurs in 1-21 days after onset of symptoms. Survivors usually have considerable residual disability. May produce severe permanent neurologic impairment requiring lifelong institutionalization. 

MEG Military exposure guidelines for deployed personnel. Levels reported in this handbook are for 1-h exposures and consider three health endpoints. Minimal (Min) Continuous exposure to concentrations above these levels could produce mild, transient, reversible effects but should not impair military operational performance. Significant (Sig) Continuous exposure to concentrations above these levels could produce irreversible, permanent, or serious health effects, and could degrade military operational performance and even incapacitate some individuals. Severe (Sev) Continuous exposure to concentrations above these levels could produce life-threatening or lethal effects in some individuals. 

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