Which of the following clinical manifestations would the nurse expect to observe in a client experiencing a Disulfiram-Ethanol Reaction (DER)?

1. A

   Bradycardia and hypertension

2. B

   Throbbing headache and flushing

3. C

   Hypothermia and pallor

4. D

   Sedation and constipation

Appeared in: HPSSC - 2015

Explanation

• A Disulfiram-Ethanol Reaction (DER) is caused by the accumulation of acetaldehyde after alcohol consumption in a patient taking disulfiram.
• This toxic buildup leads to widespread vasodilation, which manifests as flushing (redness and warmth of the skin) and a severe, throbbing headache.
• These two symptoms, flushing and throbbing headache, are considered classic and hallmark signs of the reaction.

Why Other Options Were Wrong

• Option A: This is the opposite of what occurs. The vasodilation caused by acetaldehyde accumulation leads to hypotension (low blood pressure) and a compensatory tachycardia (rapid heart rate).
• Option C: DER causes flushing (redness and warmth) due to vasodilation, not pallor (paleness). While the patient may feel cold later due to heat loss, hypothermia is not a primary presenting sign.
• Option D: The reaction typically causes marked uneasiness, anxiety, weakness, and confusion, not sedation. The primary gastrointestinal symptoms are severe nausea and vomiting, not constipation.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Clinical manifestations of Disulfiram-Ethanol Reaction (DER) to guide bedside assessment, documentation, and the next nursing action.
• The primary nursing role is comprehensive patient education to prevent DER. This includes providing a list of common products containing hidden alcohol.
• Nurses must assess the patient's commitment and understanding before therapy begins, as the reaction can be life-threatening, especially in individuals with underlying cardiovascular disease.
• What if? If a patient presents with a severe DER, including chest pain, severe hypotension, and respiratory distress, this is a medical emergency. The nurse's priority is to provide supportive care, including maintaining airway, administering oxygen, and preparing for IV fluid resuscitation to treat shock.

How to Approach the Question

• First, identify the core pharmacological concept: Disulfiram-Ethanol Reaction (DER).
• Recall the mechanism of action: Disulfiram inhibits aldehyde dehydrogenase.
• Connect the mechanism to the pathophysiology: This inhibition causes a toxic accumulation of acetaldehyde when alcohol is consumed.
• Think about the symptoms of acetaldehyde toxicity. The key effects are vasodilation and irritation.
• Evaluate each option based on this pathophysiology: Vasodilation causes flushing, headache, and hypotension (not hypertension or pallor). The overall effect is distressing and causes anxiety (not sedation).

Concept Tested & Keywords

• Concept Tested: Clinical manifestations of Disulfiram-Ethanol Reaction (DER)
• Stem keywords: Disulfiram-Ethanol Reaction, DER, clinical manifestations, observe
• Lead-in keywords: expect to observe
• Negative lead-in flag: false

Question ID

Qw7zIBCj_3KlNh0UhBHMp1

Copy ID

Reference Book

E6 Pharmacology Nursing Lilley 11e Part 1 p. 302-304

E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) p. 2184-2186