Which of the following terms is used to document a bluish discolouration of the skin

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2024

Explanation

Cyanosis is the specific medical term used to describe a bluish or purplish hue of the skin and mucous membranes.
This color change is a direct result of an increased concentration of deoxygenated hemoglobin in the small blood vessels.
It signals that the tissues are not receiving enough oxygen, a condition known as hypoxia.
Cyanosis can be central (seen in the lips and tongue, indicating a systemic issue like heart or lung disease) or peripheral (seen in fingertips and toes, often due to cold or poor circulation).

Option A: Erythema refers to redness of the skin, not a bluish discoloration. It is caused by increased blood flow (hyperemia) to an area.
Option B: Jaundice describes a yellowing of the skin and sclera. It is caused by an accumulation of bilirubin in the blood.
Option D: Pallor is the term for paleness of the skin. It is caused by a reduced amount of oxyhemoglobin or decreased blood flow.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Terminology for Skin Color Assessment as background academic context rather than a clinical decision trigger.
Assessing skin color is a fundamental nursing skill for quickly identifying life-threatening conditions like severe hypoxia or shock.
Cyanosis is a critical sign that requires immediate investigation to determine the underlying cause and provide intervention, such as administering oxygen or addressing circulatory failure.
In patients with darker skin tones, cyanosis can be more difficult to detect. Nurses should assess areas with less pigmentation, such as the conjunctivae, oral mucous membranes, and nail beds.

How to Approach the Question

First, identify the key descriptor in the question stem, which is 'bluish discolouration of the skin'.
This is a factual recall question that tests your knowledge of medical terminology related to physical assessment findings.
Systematically review the options and recall the definition for each term.
Erythema is redness, Jaundice is yellowing, Cyanosis is blueness, and Pallor is paleness.
Match the key descriptor 'bluish' with the correct term, which is Cyanosis.
Eliminate the other options as their definitions do not match the description in the question.

Concept Tested & Keywords

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E6 Nursing Brunner Adult Health 3SA Vol 1 Part 4 p. 53-55

E6 Medicine Macleod Clinical Examination 15e p. 38-40

E6 Medicine Harrison 22e Part 1 p. 319-321

Practise the full RUHS, Jaipur, M.Sc Nursing Entrance Exam-2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.