Table of contents

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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

18. The Heart

Electrical Conduction System of the Heart

Anatomy & Physiology

18. The Heart

Electrical Conduction System of the Heart

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Multiple Choice

A nurse is assessing a newborn's heart rate. Which of the following actions should the nurse take to obtain an accurate measurement?

Estimate the heart rate by observing the chest movements.

Measure the radial pulse for 30 seconds and double the result.

Count the heartbeats for 15 seconds and multiply by 4.

Use a stethoscope to listen to the apical pulse for a full minute.

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Verified step by step guidance

Understand the importance of accuracy in measuring a newborn's heart rate, as it is crucial for assessing the baby's health status.

Recognize that the apical pulse, located at the apex of the heart, provides the most accurate heart rate measurement in newborns.

Use a stethoscope to listen directly to the apical pulse, which is typically found at the left side of the chest, just below the nipple line.

Count the heartbeats for a full 60 seconds to ensure an accurate measurement, as newborns can have irregular heart rhythms that might be missed with shorter counting intervals.

Avoid using methods like observing chest movements or measuring the radial pulse, as these can be less reliable in newborns due to their small size and rapid heart rates.