Identifying Residential Hazards Using Home Test Kits
The purpose of this project is to help families and communities identify and reduce health risks from lead, pesticides and, ultimately, other environmental hazards. We have partnered with the Better Housing League and Baby’s Milk Fund in Cincinnati and nationally with the Alliance to End Childhood Lead Poisoning and the National Center for Lead Safe Housing. The first specific aim of this project is to evaluate a sampling kit for families to assess levels of lead and pesticides in their home environment. This aim will strengthen right-to-know laws by providing families with tools to assess environmental contamination in their own homes. The second aim is to increase community awareness of the role of environmental agents in developmental disorders, hearing loss and school problems.
A cross-sectional random, stratified study design will be used for this project. All children who are younger than 5 years of age and have a venipuncture blood sample taken at the babies Milk Fund Clinic will be eligible for this study. After checking the lists for errors and duplications, we will randomly permute the sampling frame, stratifying on children’s blood lead concentration. Stratification will be used to enroll about 33% of the sample with blood lead concentrations below 5 mg/dl, 33% between 5 to 10 mg/dl, and 33% of 10 mg/dl or higher. Stratifying the sample will improve our chances of testing the predictive validity of home sampling kits to identify children who have blood lead concentration > 10 mg/dl collected by families. In addition this study will:
1. Develop a pesticide wipe sampling kit to accompany our lead-sampling kit.
2. Evaluate the predictive validity of home sampling kits for lead-contaminated floor dust to identify children who have blood lead levels of 10 mg/dl or higher by community participants compared with repeat samples taken by trained, community workers.
3. Evaluate the reliability of home sampling kits for pesticides in dust collected by community participants compared with trained, community workers.
4. Disseminate data on the reliability of home sampling tests and provide tools for families to collect environmental samples for large, population-based studies.
5. Develop a Healthy Homes Resource Center at the Better Housing League to disseminate information to the community about residential hazards.
Allocation: Random Sample, Primary Purpose: Screening, Time Perspective: Cross-Sectional, Time Perspective: Prospective
University of Cincinnati
National Institute of Environmental Health Sciences (NIEHS)
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00285532
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
Lead Poisoning, Nervous System
Injury to the nervous system secondary to exposure to lead compounds. Two distinct clinical patterns occur in children (LEAD POISONING, NERVOUS SYSTEM, CHILDHOOD) and adults (LEAD POISONING, NERVOUS SYSTEM, ADULT). In children, lead poisoning typically produces an encephalopathy. In adults, exposure to toxic levels of lead is associated with a peripheral neuropathy.
Lead Poisoning, Nervous System, Childhood
Neurologic disorders occurring in children following lead exposure. The most frequent manifestation of childhood lead toxicity is an encephalopathy associated with chronic ingestion of lead that usually presents between the ages of 1 and 3 years. Clinical manifestations include behavioral changes followed by lethargy; CONVULSIONS; HALLUCINATIONS; DELIRIUM; ATAXIA; and vomiting. Elevated intracranial pressure (HYPERTENSION, INTRACRANIAL) and CEREBRAL EDEMA may occur. (From Adams et al., Principles of Neurology, 6th ed, p1210-2)
Lead Poisoning, Nervous System, Adult
Neurologic conditions in adults associated with acute or chronic exposure to lead or any of its salts. The most common lead related neurologic syndrome in adults consists of a polyneuropathy involving motor fibers. This tends to affect distal nerves and may present as wrist drop due to RADIAL NEUROPATHY. Additional features of chronic lead exposure include ANEMIA; CONSTIPATION; colicky abdominal pain; a bluish lead line of the gums; interstitial nephritis (NEPHRITIS, INTERSTITIAL); and saturnine gout. An encephalopathy may rarely occur. (From Adams et al., Principles of Neurology, 6th ed, p1212)
Poisoning caused by ingestion of SEAFOOD containing microgram levels of CIGUATOXINS. The poisoning is characterized by gastrointestinal, neurological and cardiovascular disturbances.
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