Respiratory

Question 1

Normal Lung Volumes (70kg male)
TLC
FRC
RV

Answer 1

TLC = 5800ml
FRC
RV = 1200ml

Question 2

Normal Lung % (70kg male)

RV is what % of TLC

Answer 2

RV = 20%

TLC = 5800
RV = 1200ml
1200ml/5800ml = 20%

Question 3

Total lung capacity (components)

Answer 3

IRV + TV + ERV + RV

Question 4

Inspiratory capacity (components)

Answer 4

IRV + TV

Question 5

Functional residual capacity (components)

Answer 5

ERV + RV

Question 6

Vital Capacity (components)

Answer 6

IRV + TV + ERV

Question 7

best airflow test to assess for small airway obstruction?

Answer 7

FEF at 25-75%

Question 8

best airflow test for endurance

Answer 8

MVV (maximum voluntary ventilation)

max Amt of air that can be inhaled and exhaled over 1 min

Question 9

Although not recommended; what drugs can you give down the ETT?

Answer 9

NAVEL

Narcan
Atropine
Vasopressin
Epi
Lidocaine

Question 10

objective measures of respiratory distress include:

Answer 10

Vital Capacity < 15
Inspiratory force < 25
PaO2 < 55   (@ 100% fio2 <200)
Aa gradient > 55 (@ 100% fio2 >450)
PaCO2 > 60
RR > 40 or <6

Question 11

DLT isn too far on Left side =

Answer 11

absent BS on Right

Question 12

DLT is in too far on the right side =

Answer 12

absent BS on the Left

Question 13

DLT tip is in the trachea =

Answer 13

left and right BSS are heard

Question 14

the DLT is in too far , what’s the complication?

Answer 14

upper lobe is not ventilated (increased risk of hypoxemia)

Question 15

the DLT is not deep enough, what’s the complication?

Answer 15

failure to achieve lung separation

Question 16

the DLT is in the wrong bronchus, what’s the complication?

Answer 16

wrong lung collapses

Question 17

other name for the innominate artery

Answer 17

brachiocephalic artery

Question 18

2 most common serious complications of mediastinoscopy:

Answer 18

hemorrhage

pneumothorax

Question 19

contraindications for mediastionscopy:

Answer 19

absolute: previous mediastinoscopy
relative: tracheal deviation, thoracic aortic aneurysm, and SVC obstruction

Question 20

vascular anatomy from innominate artery to brain/head:

Answer 20

innominate a
R. common carotid
R. internal carotid
R. Cerebral circulation at Circle of willis

Question 21

for mediastionscopy, where are monitors placed?

Answer 21

NIBP - Left UE (bp during compression)
Art line - Right UE
SPO2 - RUE - compression of innominate artery will dampen/disappear

Question 22

during OLV excessive crystalloid administration increases risk of pulmonary edema. what’s the recommended limit of crystalloids?

Answer 22

<3L in first 24hrs