Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

22. The Respiratory System

Introduction to Lung Physiology

Anatomy & Physiology

22. The Respiratory System

Introduction to Lung Physiology

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Multiple Choice

Based on the client's respiratory assessment, which finding most likely indicates impaired gas exchange?

Warm, dry skin

Clear breath sounds bilaterally

Cyanosis of the lips and fingertips

Respiratory rate of 16 breaths per minute

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Verified step by step guidance

Step 1: Understand the concept of gas exchange. Gas exchange refers to the process by which oxygen is absorbed into the bloodstream from the lungs and carbon dioxide is expelled. Impaired gas exchange can result in insufficient oxygen delivery to tissues and accumulation of carbon dioxide.

Step 2: Evaluate the provided findings. Warm, dry skin and clear breath sounds bilaterally are normal findings and do not indicate impaired gas exchange. A respiratory rate of 16 breaths per minute is within the normal range for adults (12-20 breaths per minute).

Step 3: Focus on cyanosis as a key indicator. Cyanosis refers to a bluish discoloration of the skin, lips, or fingertips due to inadequate oxygenation of the blood. This is a hallmark sign of impaired gas exchange, as it suggests hypoxemia (low oxygen levels in the blood).

Step 4: Relate cyanosis to the underlying physiology. Cyanosis occurs when hemoglobin in the blood is not sufficiently oxygenated, often due to issues such as lung disease, airway obstruction, or circulatory problems that impair oxygen delivery.

Step 5: Conclude that cyanosis of the lips and fingertips is the most likely finding indicating impaired gas exchange, as it directly reflects insufficient oxygenation of the blood.