mcatest.wixsite.com/atls
ATLS Practice Test 1
Answers & Explanations
1. d. 21. c.
2. e. 22. b.
3. d. 23. b.
4. b. 24. b.
5. c. 25. c.
6. b. 26. b.
7. c. 27. e.
8. c. 28. a.
9. a. 29. d.
10. c. 30. d.
11. e. 31. e.
12. b. 32. d.
13. c. 33. d.
14. b. 34. c.
15. a. 35. c.
16. e. 36. c.
17. d. 37. c.
18. e. 38. d.
19. e. 39. a.
20. e. 40. d.
1
, mcatest.wixsite.com/atls
1. d.
E= 2
V= 2
M= 5
Total = 9
2. e.
The condition should be suspected in situations associated with shock and unilateral absent breath
sounds. Other differential diagnosis includes tension pneumothorax. Differentiation on physical
examination can be made by percussion; hyperresonance supports a pneumothorax, whereas
dullness suggests a massive hemothorax. The initial draining of ≥ 1,500 mL of blood after chest
tube insertion almost always requires immediate thoracotomy – other indications are drainage of
≥ 1/3 of the patient's total blood volume and blood loss ≥ 200 mL/hr for at least 4 hours.
2
ATLS Practice Test 1
Answers & Explanations
1. d. 21. c.
2. e. 22. b.
3. d. 23. b.
4. b. 24. b.
5. c. 25. c.
6. b. 26. b.
7. c. 27. e.
8. c. 28. a.
9. a. 29. d.
10. c. 30. d.
11. e. 31. e.
12. b. 32. d.
13. c. 33. d.
14. b. 34. c.
15. a. 35. c.
16. e. 36. c.
17. d. 37. c.
18. e. 38. d.
19. e. 39. a.
20. e. 40. d.
1
, mcatest.wixsite.com/atls
1. d.
E= 2
V= 2
M= 5
Total = 9
2. e.
The condition should be suspected in situations associated with shock and unilateral absent breath
sounds. Other differential diagnosis includes tension pneumothorax. Differentiation on physical
examination can be made by percussion; hyperresonance supports a pneumothorax, whereas
dullness suggests a massive hemothorax. The initial draining of ≥ 1,500 mL of blood after chest
tube insertion almost always requires immediate thoracotomy – other indications are drainage of
≥ 1/3 of the patient's total blood volume and blood loss ≥ 200 mL/hr for at least 4 hours.
2
