Which diagnostic test is the most definitive test used to detect meningitis?
CBC
Urinalysis
CT scan
Lumbar puncture
The Correct Answer is D
A. CBC: A CBC can indicate infection (elevated white blood cell count), but it is not specific for meningitis.
B. Urinalysis: Urinalysis is not relevant for diagnosing meningitis.
C. CT scan: A CT scan can detect complications like increased intracranial pressure but does not diagnose meningitis directly.
D. Lumbar puncture: A lumbar puncture allows direct analysis of CSF for glucose, protein, white blood cells, and organisms, which is definitive for diagnosing meningitis.
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Correct Answer is ["A","C","E"]
Explanation
A. Febrile episode: Fever is a common trigger for febrile seizures in children, especially between 6 months and 5 years.
B. Low blood lead levels: Elevated, not low, blood lead levels can increase the risk of seizures due to neurotoxicity.
C. Sodium imbalance: Both hyponatremia and hypernatremia can cause seizures by disrupting neuronal function.
D. Presence of diphtheria: Diphtheria does not directly increase the risk of seizures. Neurological complications are rare and secondary.
E. Hypoglycemia: Low blood sugar levels deprive the brain of energy, which can lead to seizures.
Correct Answer is C
Explanation
A. The child is confused and cannot remember anything regarding the seizure: Postictal confusion is normal after a seizure and does not require emergency services.
B. The child fell at the onset of the seizure: Falls can occur with seizures, but unless there is a suspected injury or prolonged seizure activity, calling 911 is unnecessary.
C. The seizure lasts more than 5 minutes: A seizure lasting more than 5 minutes is considered status epilepticus and is a medical emergency requiring immediate intervention.
D. The child is sleepy and lethargic after the seizure: Postictal sleepiness is a common and expected phase after a generalized seizure.