S8C71 - Spontaneous and Iatrogenic Pneumothorax

Question 1

Spontaneous pneumothorax

Answer 1

-causes: smoking, asthma, COPD, TB, AIDS

Question 2

SP = spontaneous pneumothorax : Dx

Answer 2

• may cause ST changes and T wave inversion on ECG
• CXR : 83% sensitive
• CT
• u/s: absence of ants marching, absence of vertical comet tail artifacts, no sandy beach sign on M mode (lung sliding is 100% sensitive but not very specific)

Question 3

SP size

Answer 3

-small:

Question 4

SP tx

Answer 4

• small pneumo but unstable: 10-14 F

- large pneumo: 14-22F