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Inborn errors of metabolism (IEM)often present within thefirst few days of lifewithnonspecific symptomslike poor feeding, vomiting, lethargy,metabolic acidosis, and seizures. These disorders impair the body's ability to metabolize proteins, fats, or carbohydrates, leading totoxic metabolite accumulation.

“Infants with inborn errors of metabolism commonly present in the first week of life with lethargy, vomiting, seizures, and metabolic acidosis. Prompt recognition is critical.”

(Referenced from CCRN Pediatric – Direct Care: Multisystem, Metabolic Disorders and Acute Presentations)

APT of 14 seconds and PTT of 40 secondsare at the upper limit of normal, and the patient hashepatic failure, which can lead tocoagulopathy. Prior to liver biopsy—a high-risk procedure forbleeding—FFP is administered to replace all clotting factorsand reduce bleeding risk.

“Patients with liver dysfunction undergoing procedures should receive FFP if coagulopathy is present, as it replaces multiple clotting factors synthesized in the liver.”

(Referenced from CCRN Pediatric – Direct Care: Hematology, Coagulation and Transfusion Support)

While patients with hypoplastic left heart syndrome (HLHS) typically have lower baseline oxygen saturations due to mixing of systemic and pulmonary blood flow,feverin this population is especially concerning due to theirimmunocompromised and pre-transplant status. Fever may signalinfection or sepsis, both of which can jeopardize transplant eligibility and lead to rapid decompensation.

“In patients awaiting heart transplantation, fever is a red flag for infection or systemic inflammatory response, both of which significantly increase mortality risk and complicate transplant candidacy. Prompt evaluation is required.”

(Referenced from CCRN Pediatric – Direct Care: Cardiovascular, Pre-Transplant Management)

This infant presents withhyponatremia and seizures, but without signs of structural neurologic abnormalities. In formula-fed infants,excessive water dilution of formulais a common cause of hyponatremia. The first step is toevaluate feeding practicesfor possible over-dilution leading to water intoxication.

“In infants with unexplained hyponatremia, especially formula-fed, assess for over-diluted formula. Water intoxication can cause seizures without infection or anatomical findings.”

(Referenced from CCRN Pediatric – Direct Care: Endocrine, Electrolyte Imbalances in Infants)

After aheart transplant, the native atrial tissue may continue to generateP waves, even though the donor heart generates its own rhythm. This results in the appearance oftwo P waveson ECG — one from the native sinoatrial node and one from the donor atrium. This is anormal findingpost-transplant and doesnot require intervention.

“Dual P waves seen post-transplant are common due to retained native atrial activity. The QRS response from donor conduction confirms proper graft function.”

(Referenced from CCRN Pediatric – Direct Care: Cardiovascular, Post-Transplant Electrophysiology Monitoring)