The common clinical manifestation of pulmonary embolism is -

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Explanation

Dyspnea, a subjective feeling of shortness of breath, is the most frequently reported symptom in patients with pulmonary embolism.
It arises from the obstruction of pulmonary arteries, which impairs gas exchange, creates a ventilation-perfusion (V/Q) mismatch, and leads to hypoxia.
The brain's respiratory center responds to the low oxygen levels and the increased work of breathing, causing the sensation of dyspnea.

Option A: A decreased respiration rate is the opposite of the body's typical response to PE. The body compensates for hypoxia by increasing the rate of breathing (tachypnea).
Option B: Bradypnea is defined as an abnormally slow breathing rate (typically less than 12 breaths/min). PE causes tachypnea (a rapid rate, typically greater than 20 breaths/min) as a compensatory mechanism.
Option D: Bradycardia is a slow heart rate (typically less than 60 bpm). PE places significant strain on the right side of the heart, leading to a compensatory tachycardia (rapid heart rate) to maintain cardiac output and perfusion.

Clinical Relevance

Nursing practice connection: Knowing Clinical manifestations of Pulmonary Embolism (PE) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses must recognize that the sudden onset of unexplained dyspnea is a major red flag for PE, which is a life-threatening medical emergency requiring immediate intervention.
Prompt and accurate assessment of respiratory rate, oxygen saturation (SpO2), heart rate, and blood pressure is critical for early detection and timely escalation of care to the physician.
A key nursing role involves initiating immediate interventions such as applying oxygen, placing the patient in a high-Fowler's position, and ensuring IV access while awaiting medical orders.

How to Approach the Question

First, identify the core concept of the question: the 'common clinical manifestation' of pulmonary embolism (PE).
Recall the basic pathophysiology of PE: a clot blocks a pulmonary artery, which obstructs blood flow to a part of the lung. This leads to a lack of oxygenation.
Think about how the body would compensate for a sudden drop in oxygen supply. The respiratory and cardiovascular systems will try to work harder.
Evaluate the options in this context: The body would increase the breathing rate (tachypnea), not decrease it (bradypnea). The heart would increase its rate (tachycardia), not decrease it (bradycardia).
The subjective feeling of being unable to get enough air, caused by this underlying hypoxia and compensatory effort, is known as dyspnea.
Therefore, dyspnea is the most common and direct symptomatic manifestation among the choices provided.

Concept Tested & Keywords

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E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 481-483

E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 23-25

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 657-659

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