ADEX Dental Hygiene Managing Medical Emergencies Questions and Answers — Questions and Answers
Question 1: An anxious 19-year-old patient begins to breathe rapidly during a prophylaxis and complains of tingling in their fingers and lightheadedness. Which of the following is the MOST appropriate initial management step?
- Administer 100% oxygen via a non-rebreather mask.
- Place the patient in a supine position with feet elevated.
- Coach the patient to slow their breathing and cup their hands over their mouth. (Correct answer)
- Immediately call for emergency medical services (EMS).
Correct answer: Coach the patient to slow their breathing and cup their hands over their mouth.
The patient is experiencing hyperventilation, which leads to an excessive loss of carbon dioxide and respiratory alkalosis. The goal is to increase the level of CO2 in the blood. Having the patient cup their hands over their mouth and nose allows them to rebreathe their exhaled air, which is rich in CO2, helping to correct the imbalance. [12, 14, 19] Administering oxygen is contraindicated as it would worsen the condition. [19]
Question 2: A patient with a known history of Type 1 diabetes suddenly becomes confused, weak, and their skin feels cold and clammy. They are conscious and able to swallow. What is the MOST appropriate immediate action?
- Administer an injection of glucagon.
- Provide a source of easily digestible sugar, such as orange juice or glucose tablets. (Correct answer)
- Administer the patient's own insulin.
- Monitor vital signs and wait for symptoms to resolve.
Correct answer: Provide a source of easily digestible sugar, such as orange juice or glucose tablets.
These are classic signs and symptoms of hypoglycemia (low blood sugar). For a conscious patient who can swallow, the standard of care is to administer 15-20 grams of a fast-acting carbohydrate to quickly raise their blood glucose level. [1, 6, 24] Administering insulin would dangerously lower their blood sugar further. Glucagon is typically reserved for unconscious patients or those unable to swallow. [1, 6]
Question 3: During a procedure, a patient suddenly loses consciousness and begins to experience tonic-clonic movements in the dental chair. Which of the following is the primary and most appropriate immediate response?
- Attempt to firmly restrain the patient's movements to prevent injury.
- Place a padded tongue depressor in the patient's mouth to prevent them from biting their tongue.
- Lower the chair, clear the area of hazards, and roll the patient onto their side. (Correct answer)
- Immediately begin chest compressions and call for an AED.
Correct answer: Lower the chair, clear the area of hazards, and roll the patient onto their side.
During a seizure, the primary goal is to protect the patient from injury. This involves clearing the area of any instruments or objects that could cause harm, lowering the chair to prevent a fall, and turning the patient to their side (recovery position) to help maintain an open airway and prevent aspiration. [4, 15, 18] Restraining the patient can cause musculoskeletal injury, and placing any object in the mouth is contraindicated and can cause airway obstruction or damage to the teeth and soft tissues. [18, 23]
Question 4: A patient experiences a rapid onset of wheezing, diffuse hives (urticaria), and a sudden drop in blood pressure immediately after application of a topical anesthetic. What is the single MOST critical medication to administer first?
- An oral antihistamine like diphenhydramine.
- An albuterol inhaler.
- Intramuscular (IM) epinephrine. (Correct answer)
- An intravenous corticosteroid.
Correct answer: Intramuscular (IM) epinephrine.
The patient is exhibiting signs of anaphylaxis, a life-threatening systemic allergic reaction. Intramuscular epinephrine is the first-line, life-saving treatment that must be administered immediately. [8, 13] It counteracts the severe bronchoconstriction and vasodilation. While antihistamines, albuterol, and corticosteroids are used as secondary treatments, they do not act as quickly or effectively as epinephrine to reverse the life-threatening symptoms. [13]
Question 5: While being raised to an upright position after a long appointment, a patient reports feeling dizzy and lightheaded. Their face appears pale. Before they lose consciousness, what is the FIRST and most critical action to take?
- Administer aromatic spirits of ammonia.
- Offer the patient a sugary drink.
- Immediately return the patient to a supine position with their feet slightly elevated. (Correct answer)
- Take the patient's blood pressure and pulse.
Correct answer: Immediately return the patient to a supine position with their feet slightly elevated.
The patient is experiencing signs of impending syncope (fainting), likely due to postural hypotension or vasovagal response. The immediate priority is to restore adequate blood flow to the brain. Returning the patient to a supine position, ideally with feet elevated (Trendelenburg position), accomplishes this quickly and is the most critical first step. [25, 27, 29] Other actions like administering ammonia or taking vitals would follow after the patient is properly positioned. [25]
Question 6: You are assessing a 68-year-old male patient who suddenly slurs his speech, complains of a severe headache, and exhibits drooping on the right side of his face. After calling 911, what is the MOST critical piece of information to obtain for the emergency medical team?
- The name of the patient's cardiologist.
- A list of the patient's allergies.
- The time of the patient's last meal.
- The exact time the symptoms first started. (Correct answer)
Correct answer: The exact time the symptoms first started.
The patient is showing classic signs of a cerebrovascular accident (CVA), or stroke. The time of symptom onset is the most critical piece of information because it determines the patient's eligibility for thrombolytic therapy (clot-busting drugs), which must be administered within a narrow time window (often 3 to 4.5 hours) to be effective. [3, 5, 11] This information directly impacts the course of treatment and patient outcome. [5, 7, 10]
ADEX Dental Hygiene Managing Medical Emergencies Questions and Answers
An anxious 19-year-old patient begins to breathe rapidly during a prophylaxis and complains of tingling in their fingers and lightheadedness.
Which of the following is the MOST appropriate initial management step?