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<< Congenital Heart Disease In Pediatric Patients: Recognizing The Undiagnosed And Managing Complications In The Emergency Department

Diagnostic Studies

Laboratory Studies

The initial investigations in a child presenting with shock, respiratory distress, and/or cyanosis should include a complete blood count (CBC), electrolytes, blood urea nitrogen (BUN), creatinine, blood gas, and chest x-ray. An arterial blood gas is useful in the evaluation of any child presenting with shock, respiratory distress, or cyanosis. The pH provides an indication of acidosis, and helps distinguish respiratory and metabolic contributions in the critically ill child. The partial pressure of carbon dioxide (PCO2) provides information on the ventilatory status of the patient in the context of the clinical examination findings. Also, the partial pressure of oxygen (PO2) can be useful in distinguishing respiratory from cardiac pathology using the hyperoxia test. Provide 100% fraction of inspired oxygen (FiO2) to the hypoxic patient for 10 minutes. 

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Last Modified: 11/17/2017
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