A 50-year-old male presented to the ER with acute onset of chest pain which was retrosternal and radiated to the back along with dysphagia, regurgitation and heaburn. Patient gave history of similar episodes of chest pain in the past as well. Barium swallow and esophageal manometric studies were performed. ECG of the patient was normal. Manometry study revealed, 1. Aperistalsis in greater than 30% of the wet swallows with 20% of contractions being simultaneous 2. Amplitudes greater than 30 mm Hg in the distal three fifths of the esophagus Which of the following drugs can be used in the above condition to relieve the symptoms: –

**Core Concept**
The underlying condition being tested is related to esophageal motility disorders, specifically **achalasia** or another motility issue given the symptoms and manometry results. The **esophagus**'s normal peristalsis is impaired, leading to difficulty swallowing (**dysphagia**), regurgitation, and **heartburn**.

**Why the Correct Answer is Right**
Given the manometry results indicating **aperistalsis** and high-amplitude contractions, the condition suggests a diagnosis of **achalasia** or a similar esophageal dysmotility disorder. Treatment for such conditions often involves relieving symptoms by reducing **lower esophageal sphincter (LES)** pressure or improving esophageal emptying. **Nitrates** and **calcium channel blockers** can help relax the LES, alleviating symptoms.

**Why Each Wrong Option is Incorrect**
**Option A:** Would be incorrect if it suggested a drug that doesn't address the underlying issue of esophageal dysmotility or LES relaxation.
**Option B:** Similarly, if it doesn't help in relaxing the LES or improving esophageal peristalsis, it would be incorrect.
**Option C:** Incorrect if it suggests a drug that might worsen the condition or not address the pathophysiology.
**Option D:** Incorrect if it's not a suitable treatment option for the condition described.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that **nitrates**, such as **isosorbide dinitrate**, can be used to relieve symptoms in conditions like achalasia by relaxing the **smooth muscle** of the esophagus, including the LES, thus facilitating swallowing.

**Correct Answer:** D. Nitrates

✓ Correct Answer: A. Sildenafil