**Question:** 5 year old male child presents with complaints of fever and abdominal distension. On examination there are 6-8 pus cells/hpf in urine. WBC count shows 78% neutrophils. What is the best line of management?

**Core Concept:**
The question is assessing the understanding of differential diagnosis and management strategies for a pediatric patient presenting with fever and abdominal distension, based on urine analysis results. Key concepts include:

* Neutrophils and their relative percentage in WBC count
* Pus cells in urine and their significance

**Why the Correct Answer is Right:**
In this scenario, the patient presents with fever and abdominal distension, which can indicate various conditions such as urinary tract infection (UTI), appendicitis, or gastroenteritis. The urine analysis reveals the presence of pus cells (6-8/hpf) and a predominance of neutrophils (78% in WBC count). These findings are strongly suggestive of a UTI, as neutrophils are a key component of the immune response against bacterial infections and their elevated percentage in WBC count indicates a higher likelihood of a bacterial infection.

**Why Each Wrong Option is Incorrect:**
A. This option is incorrect because it considers a different diagnosis unrelated to the presented symptoms and urine analysis findings. In this case, appendicitis is unrelated to neutrophils' percentage or the presence of pus cells in urine.

B. This option is incorrect because it is not directly related to the patient's symptoms and urine analysis results. While gastroenteritis can cause abdominal distension, the elevated neutrophils percentage and presence of pus cells are more indicative of a UTI.

C. This option is incorrect because it is not consistent with the presented symptoms and urine analysis findings. A urinary tract infection is the most likely diagnosis based on the patient's symptoms and the presence of pus cells and neutrophils in the urine.

D. This option is incorrect because it is unrelated to the patient's symptoms and urine analysis results. Appendicitis is not directly associated with neutrophils' percentage or the presence of pus cells in urine.

**Clinical Pearl:**
In pediatric patients, the presence of pus cells (6-8/hpf) and high neutrophil percentage (78%) in the urine analysis suggests a UTI. This condition is common in children and typically treated with antibiotics. Appropriate management for such cases includes:

1. **Antibiotic therapy:** Select an antibiotic with broad-spectrum coverage against common pathogens causing UTIs in children, such as E. coli, Klebsiella, and Proteus species. The choice of antibiotics depends on the severity of the infection and the presence of complications like pyelonephritis.
2. **Fluid replacement and hydration:** Ensure the patient is adequately hydrated to promote urine flow and facilitate the elimination of the infection.
3. **Observation and follow-up:** Monitor the patient and reassess the urine analysis to determine the response to treatment and assess for improvement in symptoms and complications.

In conclusion, the correct management involves selecting an appropriate antibiotic, ensuring adequate hydration, and monitoring the patient's condition closely. This approach addresses the patient's infection