Lack of Oxygen in the blood stream is called:

AIIMS Raipur NO- 2019 (shift 3rd)

Applied Physiology

Easy

Appeared in: AIIMS Raipur NO- 2019 (shift 3rd)

Explanation

The term 'Anoxaemia' specifically describes the lack of oxygen in the bloodstream.
The suffix '-emia' is a standard medical term component that refers to a condition of the blood.
Breaking down the word: 'An-' (without) + 'ox-' (oxygen) + '-emia' (blood) directly translates to 'without oxygen in the blood'.
While 'hypoxemia' (low blood oxygen) is more commonly used today, 'anoxaemia' (lack of blood oxygen) is the most accurate choice among the given options.

Option A: Asphyxia is a broader condition involving impaired breathing that leads to both lack of oxygen and excess carbon dioxide, not just the state of the blood.
Option C: Cyanosis is a physical sign (bluish skin) that results from low oxygen in the blood; it is a symptom, not the underlying condition itself.
Option D: Anoxia refers to a lack of oxygen in the body's tissues or organs, not specifically in the bloodstream. The suffix '-oxia' points to a condition related to oxygen in tissues.

Clinical Relevance

Nursing practice connection: Knowing Medical Terminology for Oxygen Deficiency helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses must accurately differentiate between these terms to understand patient conditions and communicate effectively with the healthcare team. For example, documenting 'cyanosis observed' is a specific finding, while 'patient is hypoxemic' is a physiological state confirmed by tests like pulse oximetry or ABG.
Monitoring for signs of hypoxemia (restlessness, anxiety, tachycardia, tachypnea) is a critical nursing responsibility, as it allows for early intervention before the late sign of cyanosis appears.
What if? If a patient has severe anemia, they may not show cyanosis even if they are dangerously hypoxemic. This is because cyanosis requires a certain absolute amount of deoxygenated hemoglobin (about 5 g/dL) to be visible, which an anemic patient may not have. Nurses must rely on other signs and pulse oximetry in these cases.

How to Approach the Question

First, identify the key phrase in the question: 'in the blood stream'. This is the critical locator for the correct term.
Next, analyze the options by breaking them down into their medical root words (prefix, root, suffix).
Recognize that the suffix '-emia' specifically relates to blood conditions.
Evaluate 'Anoxaemia': 'An-' (without) + 'ox-' (oxygen) + '-emia' (blood). This perfectly matches the question's requirement.
Differentiate the other terms: 'Anoxia' refers to tissues, 'Cyanosis' is a sign, and 'Asphyxia' is a process of suffocation. This confirms Anoxaemia is the most precise choice.

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