Medical Emergencies · patient case with 3 questions
Type 1 diabetic who skipped breakfast
Patient: Male, 31 years old
Chief Complaint: Attends a morning appointment for a restoration.
Background: Type 1 diabetes on a basal-bolus insulin regimen. He took his usual morning insulin but forgot to eat breakfast before leaving the house.
Current Findings: Twenty minutes into the appointment he becomes pale, sweaty and shaky, and reports feeling dizzy and confused. He is conscious and able to swallow.
Vital Signs: BP 118/72 mmHg · HR 104 bpm · Respirations 18/min
Question 1
What is the immediate management?
Show answer and explanation
Correct answer: D. Give an oral source of glucose
- A. Positioning and oxygen are supportive measures but they do not address the cause. The patient needs glucose.
- B. Emergency services may be needed if he loses consciousness, but a conscious patient who can swallow should be given glucose now rather than left to deteriorate.
- C. Insulin lowers blood glucose further and would be catastrophic here.
- D. CORRECT. Insulin without food equals hypoglycaemia, and the picture — pallor, sweating, tremor, tachycardia, confusion — is textbook. In a CONSCIOUS patient with an intact swallow, give 15–20 g of fast-acting oral carbohydrate immediately: glucose tablets, juice, or regular soft drink. Recheck in 15 minutes and repeat if needed. When in doubt between hypo- and hyperglycaemia, GIVE SUGAR — the harm of a little extra glucose in a hyperglycaemic patient is trivial, while untreated hypoglycaemia causes brain injury within minutes.
Note: If consciousness is LOST, oral glucose becomes an aspiration hazard. Then it is intramuscular glucagon 1 mg, or intravenous 50% dextrose if access is available, plus activation of emergency services.
Question 2
During a different appointment a patient is returned to the upright position and immediately reports feeling dizzy and light-headed. What is the most appropriate next step?
Show answer and explanation
Correct answer: A. Return the patient to the supine position
- A. CORRECT. This is orthostatic (postural) hypotension from rapid repositioning — blood pools in the lower limbs and cerebral perfusion falls transiently. Returning the patient supine restores cerebral blood flow immediately and prevents a syncopal episode. Bring the chair up slowly afterwards, in stages.
- B. Nitroglycerin is a vasodilator. It would lower blood pressure further and worsen the situation. It is for anginal chest pain.
- C. Emergency services are unnecessary for a self-limiting postural episode that resolves on repositioning.
- D. Oxygen does not correct the problem while the patient remains upright; the issue is perfusion, not oxygenation.
Note: This is why the chair is raised in stages, and why patients on antihypertensives, older patients and pregnant patients are given a moment seated on the edge of the chair before standing.
Question 3
Which is the MOST common medical emergency in the dental office?
Show answer and explanation
Correct answer: B. Syncope
- A. Anaphylaxis is dramatic and life-threatening but rare in dental practice.
- B. CORRECT. Vasovagal syncope accounts for roughly half of all medical emergencies in dental practice. Anxiety, pain, the sight of a needle or a prolonged upright posture trigger a vagal surge with bradycardia and vasodilation, cerebral hypoperfusion follows, and the patient faints. Management is positional — supine with the legs elevated — plus airway, oxygen and reassurance.
- C. Myocardial infarction occurs but is far less frequent than syncope.
- D. Seizures occur mainly in patients with known epilepsy and are much less common than syncope overall.