एक समयपूर्व (preterm) नवजात शिशु को उस शिशु के रूप में परिभाषित किया जाता है जिसका जन्म गर्भावस्था के कितने सप्ताह पूरे होने से पहले हुआ हो?

Which of the following is a primary cause of physiological jaundice in a newborn?

A 9-month-old infant presents with sudden colicky abdominal pain, bilious vomiting, and drawing up of legs. A sausage-shaped mass is palpated in the right upper quadrant, and stool contains mucus and blood ('current jelly' stool). What is the most appropriate initial management for this condition?