## Core Concept
The patient's symptoms, including palpitations, breathlessness, sweating, and a fear of impending death without identifiable triggers, are characteristic of **Panic Disorder**. Panic disorder is a type of anxiety disorder that involves recurrent panic attacks. The management of panic disorder often involves a combination of psychotherapy and pharmacotherapy.

## Why the Correct Answer is Right
For the long-term treatment of panic disorder, **Selective Serotonin Reuptake Inhibitors (SSRIs)** are considered a first-line treatment option. SSRIs work by increasing the levels of serotonin in the brain, which helps to reduce the symptoms of anxiety and panic. They are preferred over other options due to their efficacy, safety profile, and tolerability. SSRIs typically take a few weeks to start showing their effects but are effective in the long-term management of panic disorder.

## Why Each Wrong Option is Incorrect
- **Option A:** While **Benzodiazepines** can provide immediate relief for acute panic attacks, they are generally not recommended for long-term treatment due to the risk of dependence and withdrawal symptoms.
- **Option B:** **Monoamine Oxidase Inhibitors (MAOIs)** are another class of antidepressants that can be used for treating panic disorder but are not typically considered first-line due to dietary restrictions, potential for drug interactions, and side effects.
- **Option D:** **Tricyclic Antidepressants (TCAs)** can also be effective for panic disorder but are usually considered after SSRIs due to their side effect profile and the risk of overdose.

## Clinical Pearl / High-Yield Fact
A key point to remember is that when using SSRIs for panic disorder, it's crucial to start with a low dose and gradually increase it to minimize side effects. Also, patients should be informed that SSRIs may take several weeks to become effective.

## Correct Answer: C.