In this section
Dehydration Intravenous fluids
Hypertrophic Pyloric Stenosis (HPS) usually presents between 2 and 6 weeks of chronological age with progressive non-bilious vomiting.
Risk factors include: male, first born, parental history of HPS (especially if mother affected).
Weight loss or inadequate weight gain
Visible gastric peristalsis (may be more obvious following a feed)
Urinary tract infection (UTI), gastroenteritis, gastrooesophageal reflux, surgical causes (eg volvulus, malrotation), congenital adrenal hyperplasia
Refer to dehydration and IV fluids guidelines.
Include Potassium in IV fluids once urine output is adequate (1–2 mL/kg/hr)
Pyloric stenosis suspected — all
confirmed cases should be managed as an inpatient
Note: consult with a paediatric surgeon
Confirmed or high suspicion for pyloric stenosis
Note: transfer to a paediatric centre early, once an
initial management plan is in place
For emergency advice
and paediatric or neonatal ICU transfers, see Retrieval Services.
Last updated July 2019