NORCET 2 - 2021 (shif…: Identify the following condition in the X-ray image.

NORCET 2 - 2021 (shift-1)

Medical & Surgical Nursing

Medium

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

The X-ray clearly displays a large, crescent-shaped lucency (dark area) between the liver and the right hemidiaphragm.
This finding is the classic radiological sign of pneumoperitoneum, which is free air in the abdominal (peritoneal) cavity.
Pneumoperitoneum is most often caused by the rupture or perforation of a hollow organ, such as the stomach or intestine.
The leakage of bowel contents and air into the abdomen causes peritonitis, a serious and painful inflammation that requires urgent surgical intervention.

Option A: A right-sided pneumothorax involves air in the pleural space (in the chest cavity, surrounding the lung), not under the diaphragm. The X-ray would show the edge of the collapsed lung and an absence of lung markings in the periphery of the chest.
Option C: Small intestinal obstruction (SAIO) typically presents with multiple dilated loops of the small bowel (appearing like a 'stack of coins') and air-fluid levels on an abdominal X-ray. While some bowel gas is visible, the dominant finding is free air, not obstruction.
Option D: Upward protrusion of the diaphragm (eventration) would show an abnormally high position of the diaphragm itself, but there would not be a separate, distinct crescent of air between the diaphragm and the liver as seen in this image.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Radiological interpretation of an erect chest X-ray for identifying pneumoperitoneum as background academic context rather than a clinical decision trigger.
Pneumoperitoneum due to a perforated viscus is a surgical emergency. A nurse's prompt recognition and reporting of associated signs (e.g., sudden, severe abdominal pain, board-like rigidity) are critical for patient survival.
Immediate nursing interventions include keeping the patient NPO (nothing by mouth), establishing IV access for fluids and antibiotics, preparing for an NG tube insertion to decompress the stomach, and continuous monitoring of vital signs for signs of septic shock.
What if? If the patient was unable to sit or stand for the X-ray, a left lateral decubitus view would be ordered. In this position, free air would collect over the lateral aspect of the liver, appearing as a lucency between the liver and the abdominal wall.

How to Approach the Question

First, systematically analyze the X-ray image. Look at the lungs, heart, bones, and the areas above and below the diaphragm.
Identify the most striking abnormality. In this case, it is the large, dark, crescent-shaped area under the right side of the diaphragm.
Recognize this specific sign. The crescent of air under the diaphragm is the hallmark of pneumoperitoneum.
Consider the clinical implication of this sign. Pneumoperitoneum most commonly indicates a perforated hollow organ.
Evaluate the given options. 'Perforated peritonitis' is the clinical condition directly associated with the radiological sign of pneumoperitoneum.
Mentally exclude the other options by recalling their typical X-ray appearances, which do not match the image.

Concept Tested & Keywords

Concept Tested: Radiological interpretation of an erect chest X-ray for identifying pneumoperitoneum.
Stem keywords: X-ray image, condition
Lead-in keywords: Identify
Clinical cues: Large crescent of air under the right hemidiaphragm.

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