Which condition sees in Iron deficiency anaemia?

Appeared in: SGPGI Nursing Officer-2023

Explanation

Iron deficiency leads to reduced hemoglobin, which decreases the blood's capacity to carry oxygen to the tissues.
To compensate for the resulting tissue hypoxia, the body increases the respiratory rate (tachypnea) to take in more oxygen.
Simultaneously, the lack of oxygen for cellular energy production causes significant fatigue, weakness, and exercise intolerance, leading to a decrease in activity levels.

Option A: This is the opposite of the body's response. Breathing rate increases to compensate for low oxygen, and activity decreases due to fatigue.
Option B: While breathing does increase, activity tolerance is significantly reduced. A person with anemia lacks the energy to increase their activity.
Option C: The body's compensatory mechanism involves increasing the breathing rate, not decreasing it. A decreased breathing rate (bradypnea) would worsen the hypoxia.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pathophysiological manifestations of Iron Deficiency Anemia as background academic context rather than a clinical decision trigger.
Nurses must assess for both respiratory changes (dyspnea on exertion) and levels of fatigue in patients with anemia. Monitoring oxygen saturation (SpO2) is also important.
A key nursing intervention is helping the patient manage fatigue through energy conservation techniques, such as planning rest periods, prioritizing activities, and avoiding overexertion.
Patient education should focus on iron-rich foods, proper administration of iron supplements (e.g., with Vitamin C to enhance absorption), and recognizing signs of worsening anemia.

How to Approach the Question

First, identify the core condition mentioned in the question: Iron deficiency anemia.
Recall the primary function of iron in the body, which is its role in forming hemoglobin for oxygen transport.
Deduce the main physiological problem in anemia: a reduced capacity of the blood to carry oxygen.
Consider the body's immediate compensatory response to low oxygen levels (hypoxia). The respiratory system is stimulated to increase the rate and depth of breathing.
Next, think about the effect of chronic low oxygen on the body's energy and function. Tissues and muscles are starved of oxygen, leading to fatigue, weakness, and an inability to sustain physical effort.
Combine these two effects: breathing rate increases, while the capacity for activity decreases. Select the option that matches this physiological reality.

Concept Tested & Keywords

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E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) p. 372-374

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 351-353

Practise the full SGPGI Nursing Officer-2023

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