EKG, PFTs, CXR, Lung Sounds, Etc

Question 1

Left Bundle Branch Block

Answer 1

• tall R waves in lateral leads (I, V5-V6) –> double notched/M shaped R wave
• deep S waves in V1-V3 (rS)

Question 2

Right Bundle Branch Block

Answer 2

RSR’ in V1-V3

Wide, slurred S wave in lateral leads (I, avL, V5-V6)

Question 3

CXR- posterior ribs

Answer 3

9-10

Question 4

CXR- anterior ribs

Answer 4

6-7

Question 5

CXR- left sided heart findings

Answer 5

subclavian artery
aortic arch
left pulmonary artery
AP window

Question 6

CXR- right sided heart findings

Answer 6

SVC

right pulmonary artery

Question 7

Lateral CXR- diaphragm

Answer 7

right sided on top of left sided

Question 8

Lateral CXR- cardiac

Answer 8

aortic arch –> left atrium –> left ventricle –> IVC

Question 9

Mitral Stenosis Murmur

Answer 9

opening snap
diastolic rumble (increases in length w/ severity)

Question 10

Mitral Regurgitation Murmur

Answer 10

holosystolic murmur, best at apex, radiates to back or clavicular area (depending on valves)

Question 11

Aortic Regurg Murmur

Answer 11

low-pitched diastolic rumble at apex

“Austin-Flint” murmur

Question 12

Aortic Regurg other associations

Answer 12

widened pulse pressure

Question 13

Aortic Regurg murmur pathophys

Answer 13

regurg jet directed towards anterior leaflet of mitral valve