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학습 자료 둘러보기 →The primary diagnostic step is a thorough perineal examination. Directly visualize the anal area to check for a patent opening. A thin membrane or complete absence of an opening is pathognomonic.
Assess for later signs of distal intestinal obstruction, such as abdominal distension, visible peristaltic waves, and bilious vomiting. These develop over 24-48 hours.
Do not rely solely on systemic signs for diagnosis. Failure to pass meconium within 24 hours mandates a direct perineal inspection to rule out anorectal malformation before complications arise.
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