Clinical meaning
Pediatric red flags represent clinical findings that indicate potentially life-threatening conditions requiring immediate evaluation. Children compensate for physiological stress differently than adults: tachycardia is the earliest sign of shock, while hypotension is a late and ominous finding indicating loss of approximately 25-30% of blood volume. The immature immune system in neonates produces blunted inflammatory responses, making fever in infants under 28 days a medical emergency requiring full sepsis workup because clinical appearance alone cannot exclude serious bacterial infection. Developmental regression (loss of previously acquired milestones) always indicates pathology such as neurodegenerative disease, brain tumor, or metabolic disorder and is never normal variation.
Diagnosis & workup
Diagnostics & workup: - Full sepsis workup for febrile neonates under 28 days: CBC, blood culture, urinalysis, urine culture, lumbar puncture with CSF analysis - CT head without contrast for new-onset focal seizures, altered mental status, or signs of increased ICP - Blood glucose point-of-care testing for any child with altered mental status (hypoglycemia is reversible and must be excluded immediately) - Toxicology screen for unexplained altered mental status, seizures, or cardiac dysrhythmias - Skeletal survey and ophthalmologic exam for suspected non-accidental trauma - Urgent echocardiography for cyanosis unresponsive to supplemental oxygen (suspect ductal-dependent cardiac lesion)