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

18. The Heart

Electrocardiogram (ECG)

Anatomy & Physiology

18. The Heart

Electrocardiogram (ECG)

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Multiple Choice

Which of the following actions will help you obtain the best-quality ECG tracing?

Use old or dried-out electrode pads.

Ensure the patient's skin is clean and dry before applying electrodes.

Place electrodes over bony prominences.

Allow the patient to move freely during the recording.

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Verified step by step guidance

Step 1: Understand the purpose of an ECG (electrocardiogram) tracing, which is to measure the electrical activity of the heart. High-quality tracings are essential for accurate diagnosis.

Step 2: Recognize that proper electrode placement and preparation of the patient's skin are critical for reducing interference and obtaining clear signals. Ensure the skin is clean and dry to improve electrode adhesion and conductivity.

Step 3: Avoid placing electrodes over bony prominences, as these areas can interfere with signal transmission. Instead, place electrodes on soft tissue areas as specified in standard ECG protocols.

Step 4: Use fresh, high-quality electrode pads. Old or dried-out pads can compromise signal quality due to poor conductivity.

Step 5: Minimize patient movement during the recording process, as movement can introduce artifacts and distort the ECG tracing. Ensure the patient is comfortable and still.