What is the most likely cause of projectile vomiting in a 6-week-old male?

True or False: Vomiting without diarrhoea is reassuring?

Which of the following is NOT a red flag for vomiting in children?

What is the first-line treatment for mild dehydration in gastroenteritis?

Which investigation is MOST appropriate for suspected intussusception?

A 4-year-old has green vomit, abdominal distension, and lethargy. What should you do FIRST?

Which statement about ondansetron in kids is TRUE?

Which of the following is an example of functional vomiting?

Acute infectious gastroenteritis in children is most commonly caused by:

Hypernatraemia in infants with gastroenteritis is most often caused by?:

Which of the following is NOT a red flag in gastroenteritis according to QPEC?

A risk factor for dehydration in gastroenteritis is:

For children >2 years with clinical dehydration, which route is preferred?

Rapid rehydration volume over 4 hours is calculated as:

To prevent spread of viral gastro in childcare, children should be excluded for:

A 3-week-old male presents to ED with forceful, non-bilious vomiting after every feed for 3 days. He is hungry after vomiting and has lost weight. On exam, he appears slightly dehydrated. A small olive-shaped mass is palpated in the epigastric region. WHAT IS THE MOST LIKELY DIAGNOSIS?

A 2-month-old presents with sudden onset bilious vomiting, abdominal distension, and lethargy. Mum reports one episode of dark, bloody stool ("currant jelly"). The child is tachycardic with a distended abdomen. WHAT IS THE NEXT MOST APPROPRIATE STEP?

A 2-year-old girl presents with vomiting and watery diarrhoea for 24 hours. She is alert, has mild dry lips, and her cap refill is <2 sec. She hasn’t kept down much fluid today. No blood in stool. WHAT IS THE MOST APPROPRIATE NEXT STEP?

A 13-year-old boy presents with vomiting, abdominal pain, and increasing drowsiness over 6 hours. He is tachypnoeic with fruity-smelling breath. BGL is 18.6 mmol/L. WHAT IS THE LIKELY DIAGNOSIS?

A 4-year-old presents with recurrent episodes of vomiting every few weeks, lasting 24–48 hours. No associated fever, diarrhoea, or abdominal tenderness. Child is well between episodes. WHAT IS THE MOST LIKELY DIAGNOSIS?

A 7-year-old boy presents with early morning vomiting, worsening headache, and blurred vision. Parents report he’s been more irritable and has had difficulty at school. On examination, he is bradycardic with elevated blood pressure and shows papilloedema on fundoscopy. WHAT IS THE MOST LIKELY UNDERLYING CAUSE OF HIS VOMITING?