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A child — cold, tachycardic, weak pulse; shock; 20ml/kg fluid bolus, reassess. Pediatric shock (compensated — tachycardia, delayed capillary refill — decompensated — hypotension: fluids — 20ml/kg isotonic bolus — reassess; blood — hemorrhagic; septic — antibiotics + norepinephrine; cardiogenic — inotropes): status epilepticus (>5 min — buccal midazolam/IV lorazepam → phenytoin → ICU). Poisoning (ABCs — identify — kerosene — aspiration risk — no gastric lavage; OP — atropine + pralidoxime; paracetamol — NAC; iron — desferrioxamine). Anaphylaxis (adrenaline IM 0.01mg/kg — repeat; fluids, antihistamine, steroids). The tachycardic child is shocked — bolus before pressure falls.