Ryanair Initial Practice Exam

Which of the following is a sign of hypoxia?

1. Pale grey skin (cyanosis)

2. Rapid heartbeat

3. High blood pressure

4. Fever

The correct answer is: Pale grey skin (cyanosis)

Hypoxia refers to a deficiency in the amount of oxygen reaching the tissues, which can lead to noticeable signs and symptoms in an individual. Pale grey skin, commonly associated with cyanosis, is a clear indicator that the body is not receiving adequate oxygen. When blood lacks sufficient oxygen, it can appear bluish or grayish instead of its normal pink hue, especially in areas like the lips and extremities. This visible change in skin color serves as an important sign for healthcare providers to assess the oxygenation status of a patient. The other choices represent potential physiological responses to various conditions. Rapid heartbeat can occur due to stress, anxiety, or other medical conditions, not specifically hypoxia alone. High blood pressure may arise from different factors, including stress or cardiovascular issues, but it isn't a direct sign of hypoxia. Fever indicates an underlying infection or inflammation rather than a reduction in oxygen levels. Therefore, the identification of pallor, specifically in the form of cyanosis, stands out as a primary indicator of hypoxia and its effects on the body’s oxygen levels.