Mech Vent

Question 1

When does gas echange occur

Answer 1

Gen 17

Question 2

Gen 0-16 are

Answer 2

conducting airways (anatomical dead space)

Question 3

Anatomical shunting

Answer 3

Bronchial artery gives blood to conducting airways then shunts into pulmonary vein

Question 4

What lung volumes cannot be measured directly

Answer 4

RV
TLC
FRC

Question 5

Lung equation?

Answer 5

PTP=PA-PIP

PIP usually -5

Question 6

what is the slope of the static PV loop

Answer 6

compliance

Question 7

When is compliance lower

Answer 7

higher lung volume

Question 8

Disease that results in inc compliance

Answer 8

emphysema

Question 9

surfactant is made by

Answer 9

Type II pneumocytes

Question 10

When does surfactant finish production

Answer 10

32 weeks

Question 11

How can you inc surfactant synthesis

Answer 11

glucocorticoids to mother 1-2 days before birth

Question 12

Restrictive lung diseases cause

Answer 12

decreased lung compliance

Question 13

Obstructive lung diseases cause

Answer 13

increased lung compliance

Question 14

What inhibits surfactant maturation

Answer 14

Insulin

diabetic mothers more prone to babies with NRDS

Question 15

Hysteresis is a function of?

Answer 15

Surfactant

Question 16

Compliance curves of lungs with air vs lungs with saline

Answer 16

saline lungs have one single sloped line

air lungs have 2 different lines. one for inhale and one for exhale