Based on the symptoms of headache and nuchal rigidity in an 11-year-old patient with a history of allergic rhinitis, the nurse should prepare the patient for further testing to evaluate for meningitis. In addition to a lumbar puncture, other tests that may be ordered include:
1. Blood tests: To check for signs of infection, inflammation, and other abnormalities.
2. CT scan or MRI: To obtain images of the brain and spinal cord and assess for any abnormalities such as swelling or bleeding.
3. Nasopharyngeal swab: To test for the presence of viral or bacterial infections such as influenza, strep throat, or meningitis.
4. Chest X-ray: To rule out the possibility of pneumonia and other respiratory infections.
5. Urine tests: To check for signs of infection or inflammation.
The specific tests ordered will depend on the patient's symptoms, medical history, and physical examination findings.