Pediatric Case Study: Diagnosis and Management of Acute Gastroenteritis

QUESTION

A 6-year–old child has had a 2-day history of febrile, diarrhea and abdominal pain. Physical examination reveals: 3% body weight lost, abdominal cramps, tenesmus, and frequent, low-volume stools containing blood, mucus. Blood examination:  potassium (K+)- 5,8 mmol/L, sodium (Na+)- 160 mmol/L, chloride (Cl-) – 120 mmol/L.

Questions:

What is your diagnosis?

Estimate the data of the laboratory examination. What type of dehydration is it?

What laboratory examinations should be administered for the definition of its etiology?

Emergency: prescribe adequate rehydration therapy

ANSWER

Pediatric Case Study: Diagnosis and Management of Acute Gastroenteritis

Introduction

This case involves a 6-year-old child presenting with a 2-day history of febrile illness, diarrhea, and abdominal pain. The physical examination and laboratory results indicate a complex clinical picture. In this essay, we will discuss the diagnosis, type of dehydration, and necessary laboratory examinations to identify the etiology, as well as prescribe appropriate rehydration therapy.

Diagnosis

Based on the clinical presentation, physical examination, and laboratory results, the most likely diagnosis is acute gastroenteritis (AGE). AGE is characterized by diarrhea, abdominal pain, and systemic symptoms, often accompanied by dehydration, as seen in this case.

Dehydration Assessment

The child has lost 3% of their body weight, which, in conjunction with laboratory findings, indicates a state of dehydration. The laboratory results, specifically low sodium (Na+) levels of 160 mmol/L, elevated potassium (K+) at 5.8 mmol/L, and chloride (Cl-) at 120 mmol/L, indicate hyponatremic dehydration. This type of dehydration suggests a loss of both sodium and water from the body.

Laboratory Examinations for Etiology

To determine the etiology of acute gastroenteritis, several laboratory examinations can be performed, including:
Stool Culture: This test can identify bacterial pathogens such as Salmonella, Shigella, and Campylobacter.
Viral PCR: Detects common viral causes like rotavirus or norovirus.
Ova and Parasite Examination: Screens for parasitic infections.
Blood Tests: Evaluate electrolyte imbalances and rule out systemic infections.
Assess for inflammatory markers and assess for underlying conditions.

Prescription for Adequate Rehydration Therapy

Given the clinical findings and diagnosis of acute gastroenteritis with hyponatremic dehydration, the initial step is to start rehydration therapy. In this case, oral rehydration therapy (ORT) can be administered unless contraindications exist. ORT includes oral solutions containing appropriate amounts of glucose, sodium, potassium, and water. The specific rehydration fluid can be calculated based on the degree of dehydration, as well as the ongoing fluid losses.

It is crucial to monitor the child closely for signs of clinical improvement, including rehydration, resolution of diarrhea, and improvement in electrolyte imbalances. In cases of severe dehydration, intravenous (IV) rehydration may be necessary.

Conclusion

This case highlights the common pediatric condition of acute gastroenteritis, emphasizing the importance of accurate diagnosis, assessment of the type of dehydration, and necessary laboratory examinations for determining the etiology. Effective rehydration therapy, tailored to the degree of dehydration, plays a crucial role in the management of acute gastroenteritis in children. Regular monitoring and follow-up are essential to ensure complete recovery and prevent complications.