Medical Emergencies · patient case question
The seizure has ended, the patient regained consciousness, and now he becomes cyanotic. What should the dentist do FIRST?
Patient case: Three Emergencies in One Afternoon
Patient: Three separate patients seen the same afternoon
Chief Complaint: (1) A crown slipped from the forceps and the patient swallowed it. (2) A patient's blood pressure reads 180/120 mmHg at screening. (3) A patient has a generalised seizure lasting seven minutes.
Background: Patient 1: routine crown cementation, coughed once then settled. Patient 2: known hypertensive, took no medication this morning, asymptomatic. Patient 3: known epilepsy, missed his medication.
Medications: Patient 2: amlodipine. Patient 3: levetiracetam.
Vital Signs: Patient 1: SpO₂ 99%, RR 16, speaking in full sentences. Patient 2: BP 180/120 mmHg confirmed on repeat, HR 88. Patient 3: post-ictal, then becomes cyanotic.
Findings: Patient 1: no stridor, no wheeze, no distress. Patient 2: no chest pain, no headache, no visual change, no neurological deficit. Patient 3: recovered consciousness briefly, then developed central cyanosis.
Show answer and explanation
Correct answer: A. Open the airway and administer high-flow oxygen
- A. CORRECT. CYANOSIS means inadequate oxygenation, and the immediate response is airway and oxygen. In the post-ictal period the tongue commonly falls back and secretions accumulate, so a head-tilt chin-lift, suction and HIGH-FLOW OXYGEN by mask are the first actions. Position him on his side in the recovery position to protect the airway, and monitor.
- B. Chest compressions are indicated only for a patient with no pulse and no normal breathing. He regained consciousness, so he has a pulse.
- C. Reassurance is not a treatment for hypoxia, and assuming patency without checking is precisely the error.
- D. A benzodiazepine is for a seizure that is still ONGOING beyond about five minutes — status epilepticus. This seizure has TERMINATED. Giving a benzodiazepine now would add respiratory depression to a patient who is already hypoxic.
Note: Seizure management sequence: protect from injury (do NOT restrain, do NOT put anything in the mouth), clear the area, time the event, position on the side, give oxygen, and activate EMS if the seizure lasts over five minutes, repeats without recovery, or is a first-ever seizure.
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