A patient on antidepressant therapy developed sudden hypeension on consuming cheese. The antidepressant is possibly :
**Core Concept**
The underlying principle in this question is the interaction between certain antidepressants and tyramine-rich foods, such as cheese, leading to a sudden increase in blood pressure.
**Why the Correct Answer is Right**
The antidepressant in question is likely a monoamine oxidase inhibitor (MAOI). MAOIs work by inhibiting the enzyme monoamine oxidase (MAO), which breaks down tyramine, a naturally occurring amino acid found in certain foods like cheese, wine, and fermented meats. When MAO is inhibited, tyramine levels increase, and its potent vasoconstrictive effects can lead to a sudden and severe increase in blood pressure, known as a hypertensive crisis.
**Why Each Wrong Option is Incorrect**
* **Option A:** Selective serotonin reuptake inhibitors (SSRIs) do not interact with tyramine in the same way as MAOIs, as they primarily affect serotonin levels in the brain.
* **Option B:** Tricyclic antidepressants (TCAs) can have various side effects, but they are not typically associated with tyramine-induced hypertension.
* **Option C:** Serotonin-norepinephrine reuptake inhibitors (SNRIs) also do not interact with tyramine in the same way as MAOIs, as they primarily affect serotonin and norepinephrine levels in the brain.
**Clinical Pearl / High-Yield Fact**
When counseling patients on MAOI therapy, it's essential to advise them to avoid tyramine-rich foods to prevent hypertensive crises. A classic example of a tyramine-rich food is aged cheese, such as blue cheese or Parmesan.
**Correct Answer:** D.