Psychiatric-Mental Health Nurse Practitioner Exam

What is a common reason for performing a blood test for lead in children?

1. Increased height

2. Increased irritability

3. Developmental milestones

4. Vision impairment

The correct answer is: Increased irritability

Performing a blood test for lead levels in children is often prompted by symptoms such as increased irritability. Lead poisoning can manifest through a range of behavioral and physical symptoms, and irritability can indicate potential exposure to lead. Children are particularly vulnerable to the effects of lead, which can affect their neurodevelopment, leading to behavioral issues, cognitive delays, and emotional difficulties. The other choices do not typically prompt clinicians to consider lead testing. While increased height is generally a positive growth sign, it is not associated with lead exposure. Developmental milestones relate to various areas of growth and function but do not directly indicate lead toxicity unless there is regression or significant delay noted, paired with behavioral concerns. Vision impairment, while a concerning issue, is not a primary reason for lead testing since it does not specifically correlate with lead exposure in a direct manner compared to behavioral changes like irritability. This highlights the importance of monitoring environmental toxins and their impact on a child's emotional and behavioral health.