Blood lead screening practices among US pediatricians

Area of Science:

• Pediatric Public Health
• Environmental Health
• Clinical Practice Guidelines

Background:

• The Centers for Disease Control and Prevention (CDC) revised blood lead level guidelines in 1991, recommending universal screening.
• These guidelines remain a subject of debate and controversy within the medical community.
• Pediatricians' adherence to and attitudes towards these screening recommendations are crucial for public health outcomes.

Purpose of the Study:

• To estimate the proportion of American Academy of Pediatrics (AAP) pediatricians who screen for elevated blood lead levels.
• To describe the clinical practices and attitudes of pediatricians regarding blood lead screening.
• To identify characteristics associated with universal blood lead screening practices.

Main Methods:

• A confidential, cross-sectional survey was administered to a nationally representative random sample of 1610 pediatricians via the AAP Periodic Survey.
• The study included 1035 respondents, with analysis focused on 734 primary-care pediatricians.
• Data were collected on screening practices, risk factors assessed, and attitudes towards blood lead levels and screening costs.

Main Results:

• 53% of pediatricians reported universal screening for children aged 9-36 months; 39% screened selectively, and 8% screened none.
• Primary risk factors for selective screening included pica, living in older homes, and having a sibling with elevated blood lead.
• 73% of primary-care pediatricians agreed that blood lead levels ≥10 µg/dL are elevated, but 34% believed screening costs outweigh benefits.

Conclusions:

• A slight majority of US pediatricians surveyed reported universal blood lead screening three years post-CDC guideline revision.
• Most non-universal screeners focused on high-risk children based on established risk factors.
• Further guidance is needed for pediatricians on selective blood lead screening criteria and implementation.