**Question:** Following A, one patient presented with respiratory distress and fractured ribs. One examination hyper-resonant right hemithorax and absent breath sound over same side were found. What is the first line of management?

**Core Concept:**
The core concept being tested in this question is the clinical management of a patient with respiratory distress and fractures, specifically focusing on the initial assessment and treatment plan for a patient with fractured ribs causing hemithorax and absent breath sounds.

**Why the Correct Answer is Right:**
The correct answer, Option D, involves a focused history-taking and physical examination approach. In this scenario, the patient presents with respiratory distress and fractured ribs, which are related to the mechanism of injury. The clinical findings of a hyper-resonant right hemithorax (enhanced sound transmission due to fracture) and absent breath sounds over the same side indicate severe rib fracture with hemothorax.

**Why Each Wrong Option is Incorrect:**

A. This option does not address the primary issue of the patient's respiratory distress and hemithorax findings. It focuses on providing general medical advice unrelated to the specific patient scenario.

B. Although this option mentions a chest X-ray, it does not address the immediate management of the patient's respiratory distress and hemithorax findings. A proper management plan should emphasize airway, breathing, and circulation (ABCs) priorities.

C. This option discusses the use of morphine for pain relief, but it does not address the patient's respiratory distress and hemithorax findings. Pain management is secondary to addressing the primary concerns in this situation.

**Clinical Pearl / High-Yield Fact:**

In such cases, the first line of management should focus on addressing the patient's airway, breathing, and circulation (ABCs) priorities. The patient's respiratory distress indicates a need for prompt management. The patient requires:

1. **Airway:** Assess the patient's breathing and ensure a patent airway. If necessary, intubate the patient to stabilize the airway.
2. **Breathing:** Administer supplemental oxygen (O2) via a non-rebreather mask or high flow nasal cannula. Maintain oxygen saturation ≥94%.
3. **Circulation:** Assess the patient's hemodynamics and initiate appropriate resuscitation measures (e.g., fluid resuscitation, vasopressors, etc.).

**Explanation:**

The first priority is to stabilize the patient's airway, breathing, and circulation (ABCs) due to the patient's respiratory distress and hemithorax findings. Assessing the patient's airway, ensuring a patent airway, and administering supplemental oxygen via non-rebreather mask or high flow nasal cannula will help maintain oxygen saturation ≥94%.

Additionally, consider the following:

- Administer fluid resuscitation if the patient has hypotension or hemodynamic instability. Appropriate vasopressors may be necessary in cases of inadequate oxygenation or hemodynamic instability, such as hypotension or shock.

**Why Each Wrong Option is Incorrect:**

Option A