Explain sore throat and the safety-net to a parent — OSCE

Candidate instructions

You are the paediatric registrar. A 7-year-old boy presents with a sore throat, fever of 38.5 degrees Celsius, enlarged exudative tonsils and no viral features. His McIsaac score is 4. You have taken a throat swab and are waiting for the result; you have started analgesia but not antibiotics. His mother has ten minutes with you and wants to understand: (1) why he is being swabbed rather than given an antibiotic straight away; (2) what to give for his pain; (3) what to watch for and when to come back. Explain with empathy, check understanding, and agree a clear plan. [1]

Encounter

Mother: "He has a really sore throat and a fever. The other doctor took a swab but did not give him any antibiotics. My friend's child got antibiotics for tonsillitis — why is it different for him?" [2]

Registrar: "I can see why that feels inconsistent, and it is a really fair question. The reason we swab first rather than give an antibiotic straight away is that most sore throats in children are caused by viruses, and viruses do not respond to antibiotics at all. Only about one in four or five sore throats in children his age are caused by the bacteria we can treat — group A strep. The throat swab tells us which kind he has. If it comes back positive for strep, we will start a ten-day course of penicillin, which will shorten his symptoms and prevent a rare but serious complication called rheumatic fever. If it is viral, antibiotics would not help and could actually cause side effects like diarrhoea and rash. So the swab is about getting him the right treatment, not delaying it." [1] [2]

Mother: "So what should I give him for the pain in the meantime?" [1]

Registrar: "Regular pain medicine is the most important thing right now, because throat pain can be quite severe. You can give paracetamol — about 250 mg for his weight, every four to six hours as needed, no more than four times in 24 hours — or ibuprofen, which works well for throat inflammation. Either is fine; some parents find alternating them helps the nighttime pain. Keep him drinking — cool fluids, ice chips, or soft foods are often easier to swallow. The pain usually peaks in the first two to three days and then improves. I will write down the exact doses for his weight." [1]

Mother: "When do I need to bring him back?" [3]

Registrar: "Here is the plan, and I will write it down for you. First, if the swab is positive, we will call you and start penicillin — and he needs the full ten days even once he feels better, because that is what prevents the rheumatic fever complication. Second, bring him back to be seen if his pain or fever has not improved after two to three days, or if it gets worse at any point. But most importantly, there are some signs that mean he needs to come straight back, even in the middle of the night: if he starts drooling or cannot swallow his saliva, if he cannot open his mouth properly, if his voice sounds muffled or different, if his neck looks swollen or stiff, or if he just looks much more unwell. Those can be signs that the infection has spread deeper, and we would want to see him and scan him urgently. Can you tell me two of those signs to bring him back for?" [3]

Mother: "If he starts drooling or cannot swallow, or if his neck looks swollen or stiff." [3]

Registrar: "Exactly right. I will give you a written sheet with all of those warning signs and our number. The good news is that those complications are rare, and most children like yours recover fully within a few days, whether it is viral or strep. I just want you to know what to watch for so you feel confident looking after him at home." [1]

Examiner debrief

A strong candidate explains the test-then-treat principle in plain language without being dismissive of the parent's expectation, gives correct weight-based analgesia advice, and delivers a concrete safety-net that separates the routine 48 to 72 hour review from the immediate return-now red flags of drooling, trismus, muffled voice and neck swelling. They use teach-back to confirm the parent has understood the warning signs, and they provide written information. Pitfalls include reflexively prescribing antibiotics to satisfy the parent, vague safety-netting such as come back if worse without specifying the red flags, failing to mention the importance of completing the full ten-day course if the swab is positive, and not addressing the parent's comparison with the friend's child. [1] [3]