Consultant Pediatrics oral assessment prep

Knowledge: This is severe diabetic ketoacidosis at the presentation of type 1 diabetes; ISPAD 2022 grades pH below 7.1 or bicarbonate below 5 mmol/L as severe. Her reduced GCS already signals risk of cerebral injury, commoner with severe acidosis, high urea and new-onset disease. Total body potassium is depleted despite a normal serum value and will fall once insulin starts. Measured sodium is low because of hyperglycaemia, and a corrected sodium that falls during treatment is a warning sign. The PECARN FLUID trial found that rehydration rate within the studied range did not change neurological outcome. Abdominal pain usually reflects ketosis, but I would keep sepsis and a surgical cause in mind.

Management: In a high-dependency setting she needs hourly glucose and neurological observations and two-hourly gas and electrolytes. She receives a 10 mL/kg 0.9% saline bolus over 20 to 30 minutes, then deficit and maintenance replacement over 24 to 48 hours with an isotonic fluid containing potassium once urine output and potassium are confirmed. Intravenous insulin at 0.05 to 0.1 units/kg/h starts about an hour after fluids, with no bolus. Dextrose is added when glucose falls to about 14 to 17 mmol/L, and insulin continues until ketosis resolves. Bicarbonate is not given. If she develops headache, falling GCS, bradycardia with hypertension or new neurological signs, I would give mannitol 0.5 to 1 g/kg or 3% saline at once, reduce fluid rate and call intensive care, imaging only after treatment. Subcutaneous insulin and diabetes education follow.

Ethics and communication: Consent comes from her guardian, but emergency treatment is not delayed. I would explain the lifelong diagnosis honestly and correct beliefs that sweets caused it or that traditional remedies can cure it. If earlier presentations were missed, I would review them through governance without blame. Questions about fasting in Ramadan deserve a structured plan with the diabetes team rather than a blanket answer.

Reference: Glaser N et al, ISPAD Clinical Practice Consensus Guidelines 2022: Diabetic ketoacidosis and hyperglycemic hyperosmolar state, Pediatric Diabetes, 2022; Kuppermann N et al, Clinical Trial of Fluid Infusion Rates for Pediatric Diabetic Ketoacidosis (PECARN FLUID), New England Journal of Medicine, 2018

Knowledge: This is severe unconjugated hyperbilirubinaemia in a 37-week infant with probable haemolysis, most likely G6PD deficiency, which is common in the Gulf. The AAP 2022 guideline sets phototherapy and exchange thresholds by gestational age, age in hours and neurotoxicity risk factors, which include G6PD deficiency or other haemolysis, so his thresholds are lower. His bilirubin is at or above the escalation-of-care level, which is 2 mg/dL below the exchange threshold. Sleepiness and poor feeding may be early acute bilirubin encephalopathy. A G6PD assay can be falsely normal during acute haemolysis, when young red cells predominate.

Management: This is an emergency managed in the neonatal unit. I would start intensive phototherapy at once with maximal skin exposure, correct dehydration with intravenous fluids or supplemental milk, and recheck bilirubin within two hours. Because he has reached escalation of care, I would cross-match blood and prepare for exchange transfusion now, with an experienced team and the parents informed. If bilirubin reaches the exchange threshold, or he shows hypertonia, retrocollis, opisthotonos or a high-pitched cry, I would proceed to exchange without delay, even if the bilirubin is falling. I would not subtract the conjugated fraction. I would send a blood film, albumin and quantitative G6PD, repeating the assay later if normal. Before discharge he needs an automated auditory brainstem response hearing test, follow-up of bilirubin and development, and written advice to avoid fava beans, naphthalene mothballs and oxidant drugs.

Ethics and communication: Consent for exchange comes from his guardian after a clear explanation of risks and benefits. If he was discharged without a bilirubin check or follow-up plan, I would review this through governance and disclose honestly if care fell short. I would explain that G6PD deficiency is inherited without implying blame on the mother, and offer testing to siblings. Genetic information is shared only with the family's consent.

Reference: Kemper AR et al, Clinical Practice Guideline Revision: Management of Hyperbilirubinemia in the Newborn Infant 35 or More Weeks of Gestation, Pediatrics, 2022

Knowledge: Ammonia of 640 micromol/L in a newborn with respiratory alkalosis, no acidosis and normal glucose points to a urea cycle disorder, and consanguinity and a sibling death raise the likelihood of an autosomal recessive condition. Organic acidaemias usually cause metabolic acidosis, and sepsis and liver failure must be excluded. Ammonia is directly neurotoxic, and the peak level and duration of coma largely determine outcome, so every hour counts. Diagnostic samples should be taken before treatment changes them: plasma amino acids, acylcarnitines, urine organic acids and orotic acid. The revised urea cycle disorder guideline supports early extracorporeal detoxification for severe neonatal hyperammonaemia alongside drug therapy.

Management: I would stop all protein, give high-glucose intravenous fluid at about 8 to 10 mg/kg/min with insulin if hyperglycaemia develops, and add lipid once a fatty acid oxidation defect is unlikely, to reverse catabolism. With the metabolic team I would start intravenous sodium benzoate, sodium phenylacetate and arginine at protocol doses. With this ammonia and encephalopathy, I would arrange urgent transfer to a unit able to provide haemodialysis or continuous kidney replacement therapy, not wait to see whether drugs work. Ammonia is rechecked every three to four hours on free-flowing samples sent on ice. She is ventilated if apnoeas worsen, and I would avoid valproate and steroids. Protein is reintroduced within 24 to 48 hours under dietetic guidance. Long-term care includes diet, scavengers, an emergency letter and, for severe types, liver transplantation.

Ethics and communication: The son's death may have been the same condition, and I would explain this honestly and gently, without blaming consanguinity. Consent for dialysis and central access comes from her guardian. I would offer genetic counselling, testing and future reproductive options in line with UAE law. Results belong to the parents, so I would not share them with the wider family without consent, while encouraging cascade testing.

Reference: Haberle J et al, Suggested guidelines for the diagnosis and management of urea cycle disorders: first revision, Journal of Inherited Metabolic Disease, 2019

Knowledge: This is acute chest syndrome: a new pulmonary infiltrate with fever, chest pain or respiratory signs in sickle cell disease, and a leading cause of death in the condition. It often follows a vaso-occlusive crisis, and opioid-induced hypoventilation, splinting from pain and fluid overload contribute. Causes include infection with atypical organisms or Streptococcus pneumoniae, fat embolism from bone marrow infarction and in-situ sickling. Hypoxaemia, a falling haemoglobin and falling platelets indicate severe disease. Splenic sequestration should be excluded. Transfusion improves oxygenation, and severe or progressive disease needs exchange transfusion.

Management: I would give oxygen to correct hypoxaemia, encourage incentive spirometry, titrate analgesia carefully, and start intravenous antibiotics covering pneumococcus and atypical organisms, such as ceftriaxone with a macrolide. Fluids are limited to maintenance to avoid pulmonary oedema. I would cross-match phenotype-matched, sickle-negative blood and give a simple transfusion, keeping the haemoglobin no higher than about 100 g/L to avoid hyperviscosity. If he worsens despite this or his oxygen requirement rises, I would arrange exchange transfusion with haematology and involve intensive care early, as respiratory support may be needed. I would monitor blood count, reticulocytes, liver function and gases, and check the spleen and liver for sequestration. After recovery I would address hydroxyurea adherence, penicillin prophylaxis and vaccines, check that transcranial Doppler screening is current, and consider chronic transfusion if acute chest syndrome recurs on hydroxyurea.

Ethics and communication: Consent for transfusion comes from his guardian, with an honest explanation of risks including alloimmunisation. Irregular hydroxyurea use calls for an open, non-judgemental conversation about side effects, beliefs and access, not blame. If morphine was given without respiratory monitoring, I would raise it as a learning point through governance. At a calmer time I would discuss curative options such as stem cell transplantation from a matched sibling.

Reference: Howard J et al, Guideline on the management of acute chest syndrome in sickle cell disease, British Journal of Haematology, 2015; National Heart, Lung, and Blood Institute, Evidence-Based Management of Sickle Cell Disease: Expert Panel Report, 2014

Knowledge: This is severe hypoxic-ischaemic encephalopathy after therapeutic hypothermia, and a persistently suppressed EEG, absent brainstem reflexes apart from gasps and extensive basal ganglia, thalamic and cortical injury together predict death or profound disability with high confidence. Prognosis should rest on several concordant findings after rewarming, with sedation excluded. Survival would likely mean severe cerebral palsy, feeding dependence and epilepsy. International frameworks, such as the RCPCH framework, accept that limiting life-sustaining treatment may be in a child's best interests when it imposes burdens without reasonable benefit. Active ending of life is never permissible. In the UAE, decisions such as not to resuscitate must follow the conditions set by law and facility policy.

Management: First I would confirm the findings with specialists and a second consultant. I would then meet both parents in a quiet room with their nurse and, if they wish, a relative or religious adviser. I would explain in plain words what the tests show and what her future would likely be, and ask what they understand and hope for. Rather than asking them to decide alone, I would make a clear recommendation, for example not to escalate treatment or perform cardiopulmonary resuscitation, while continuing comfort and dignity. Where time allows, decisions are reached over more than one meeting and carefully documented, with ethics committee involvement if we cannot agree. Comfort care, holding, privacy and bereavement support follow.

Ethics and communication: The guiding principle is the baby's best interests, interpreted with respect for the family's faith and values. I would avoid false hope and euphemism, and give time, not pressure. The uterine rupture must be reviewed through the incident process and disclosed to the parents honestly. Consent and every discussion should be recorded in line with UAE law and facility policy.

Reference: Larcher V et al, Making decisions to limit treatment in life-limiting and life-threatening conditions in children: a framework for practice, Archives of Disease in Childhood, 2015; Federal Decree-Law No. 4 of 2016 on Medical Liability and Cabinet Resolution No. 40 of 2019 (UAE)

Knowledge: Fever with a spreading non-blanching rash and shock is meningococcal septicaemia until proven otherwise, although pneumococcal, Haemophilus influenzae type b and Gram-negative sepsis can look similar. Tachycardia, slow capillary refill and cold extremities precede hypotension, which in a child is a late, pre-terminal sign. Hypoglycaemia, a high lactate and thrombocytopenia indicate severe disease with disseminated intravascular coagulation. Death usually comes from refractory shock, myocardial dysfunction or raised intracranial pressure. Lumbar puncture is contraindicated while he is shocked, coagulopathic or has a reduced conscious level. The Surviving Sepsis Campaign paediatric guidance supports fluid boluses with frequent reassessment and early vasoactive drugs where intensive care is available.

Management: I would call the senior team and paediatric intensive care, give high-flow oxygen, obtain intravenous or intraosseous access within minutes, take blood cultures and meningococcal PCR, and give intravenous ceftriaxone 80 mg/kg without waiting for results. I would give 10 to 20 mL/kg boluses of balanced crystalloid, reassessing after each for response and overload, and correct glucose with 2 mL/kg of 10% dextrose. After 40 to 60 mL/kg, or sooner if he worsens, I would start adrenaline peripherally while central access is planned. Intubation is by an experienced team with a cardiostable induction, since it can precipitate arrest. Corticosteroids are considered for catecholamine-resistant shock. I would check calcium, potassium and coagulation, correcting coagulopathy if he bleeds, and defer lumbar puncture. Once stabilised he is transferred to intensive care, and public health is notified so close contacts receive chemoprophylaxis.

Ethics and communication: Consent is from his guardian, but treatment cannot wait. Meningococcal disease must be notified under Federal Law No. 14 of 2014, which is a legal duty rather than a breach of confidentiality. I would counsel the parents honestly about the risk of death, scarring and limb loss. The missed vaccinations should be explored without blame and catch-up offered to him and his siblings.

Reference: Weiss SL et al, Surviving Sepsis Campaign International Guidelines for the Management of Septic Shock and Sepsis-Associated Organ Dysfunction in Children, Pediatric Critical Care Medicine, 2020; NICE guideline NG240, Meningitis (bacterial) and meningococcal disease: recognition, diagnosis and management, 2024; Federal Law No. 14 of 2014 on the Prevention of Communicable Diseases (UAE)