MFDS Part 1 - Membership of Faculty of Dental Surgery Medical Emergencies in Dentistry Questions and Answers — Questions and Answers
Question 1: A 45-year-old patient with no significant medical history develops sudden severe shortness of breath, widespread urticaria, and a rapid drop in blood pressure minutes after receiving a local anaesthetic. What is the most appropriate immediate pharmacological intervention according to Resuscitation Council UK guidelines?
- Administer 500 micrograms of adrenaline (0.5 mL of 1:1000) via intramuscular injection. (Correct answer)
- Administer 10mg of chlorphenamine via slow intravenous injection.
- Administer 200mg of hydrocortisone via intramuscular injection.
- Administer 2 puffs of a salbutamol inhaler.
Correct answer: Administer 500 micrograms of adrenaline (0.5 mL of 1:1000) via intramuscular injection.
The patient is exhibiting signs of anaphylaxis, a life-threatening emergency. The Resuscitation Council UK guidelines state that the immediate first-line treatment is an intramuscular injection of adrenaline (epinephrine). For an adult, the correct dose is 500 micrograms (0.5 mL of 1:1000 solution). While salbutamol, antihistamines (chlorphenamine), and corticosteroids (hydrocortisone) may be used as second-line treatments, adrenaline is the critical, life-saving initial intervention that must be administered without delay.
Question 2: According to the British National Formulary (BNF) and Resuscitation Council UK guidance, which of the following is an essential emergency drug that must be available in a UK dental practice for the management of a prolonged convulsive seizure (status epilepticus)?
- Adrenaline 1:1000 injection
- Glyceryl trinitrate (GTN) spray
- Midazolam oromucosal solution (Correct answer)
- Glucagon injection kit
Correct answer: Midazolam oromucosal solution
Midazolam oromucosal solution is the recommended drug for the management of prolonged or repeated convulsive seizures in a dental practice setting. Adrenaline is for anaphylaxis, GTN spray is for angina, and glucagon is for severe hypoglycaemia. While all are essential emergency drugs, Midazolam is specifically indicated for this type of epileptic emergency.
Question 3: A conscious and coherent patient with type 1 diabetes reports feeling shaky, sweaty, and confused during their appointment. A capillary blood glucose test confirms a reading of 3.2 mmol/L. What is the most appropriate initial management step?
- Administer 1 mg of glucagon via intramuscular injection.
- Provide 15-20g of a fast-acting carbohydrate, such as a glucose drink or tablets. (Correct answer)
- Administer the patient's own insulin.
- Call 999 for an ambulance immediately.
Correct answer: Provide 15-20g of a fast-acting carbohydrate, such as a glucose drink or tablets.
The patient is conscious and able to swallow, presenting with symptomatic hypoglycaemia (blood glucose <4.0 mmol/L). UK guidelines recommend the immediate administration of 15-20g of a fast-acting oral carbohydrate. Glucagon injection is reserved for patients who are unconscious or unable to swallow safely. Administering insulin would lower blood glucose further and be extremely dangerous. Calling 999 is not the initial step for a conscious patient who can be managed with oral glucose.
Question 4: A patient suddenly loses consciousness in the dental chair and begins a tonic-clonic seizure. Which of the following actions is the most important immediate priority for the dental team?
- Insert a bite block or prop between the teeth to protect the tongue.
- Attempt to restrain the patient's convulsive movements.
- Note the time the seizure started and protect the patient from injury. (Correct answer)
- Immediately administer buccal midazolam.
Correct answer: Note the time the seizure started and protect the patient from injury.
The primary management during a convulsive seizure is to prevent injury. The dental team should protect the patient from hitting hard surfaces and note the time of onset to determine if it becomes prolonged. Nothing should be placed in the patient's mouth, as this can cause dental trauma or obstruct the airway. Restraining movements is ineffective and can cause injury. Midazolam is only indicated if the seizure is prolonged (typically lasting 5 minutes or more) or repeats rapidly.
Question 5: The General Dental Council (GDC) endorses the quality standards for medical emergencies set by the Resuscitation Council UK. What piece of equipment must be immediately accessible in all clinical areas of a primary dental care facility?
- A pulse oximeter
- A glucometer
- An automated external defibrillator (AED) (Correct answer)
- An emergency tracheostomy kit
Correct answer: An automated external defibrillator (AED)
Both the GDC and the Resuscitation Council UK state that all clinical areas should have immediate access to an automated external defibrillator (AED). While a pulse oximeter and glucometer are useful diagnostic tools, they are not mandated for immediate access in the same way as an AED. An emergency tracheostomy kit is not a required piece of equipment for a primary care dental practice.
Question 6: According to General Dental Council (GDC) standards, what is the minimum number of people who must be available to deal with a potential medical emergency when dental treatment is planned to take place?
- One, provided they are a GDC registered dentist.
- Two. (Correct answer)
- Three, including one non-clinical member of staff to call emergency services.
- One GDC registrant and one first-aid trained receptionist.
Correct answer: Two.
The GDC's 'Standards for the Dental Team' guidance explicitly states that there must be arrangements for at least two people to be available to deal with medical emergencies when treatment is planned. This ensures that one person can attend to the patient while another can assist, retrieve equipment, or call for help, forming an effective team response.
MFDS Part 1 - Membership of Faculty of Dental Surgery Medical Emergencies in Dentistry Questions and Answers
A 45-year-old patient with no significant medical history develops sudden severe shortness of breath, widespread urticaria, and a rapid drop in blood pressure minutes after receiving a local anaesthetic.
What is the most appropriate immediate pharmacological intervention according to Resuscitation Council UK guidelines?