V/Q mismatched

Question 1

V

Answer 1

• ventilation

Question 2

Q

Answer 2

• volume/ perfusion

Question 3

ventilatory flow air we inhaled goes to

Answer 3

• mostly reached the base

- BASE due to gravity

Question 4

normal values

Answer 4

• pH= 7.4
• PO2= 100
• PCO2= 40

Question 5

BASE V/Q matching
is for CARBON DIOXIDE
is for SHUNT LIKE SITUATION e.g. ATELECTASIS

Answer 5

• 100/150= >ventilation
• more blood is going to the lung than air coming to the lung
• deoxygenated and venous blood rich CO2
• increase CO2 due to excess in perfusion of deoxygenated blood
• decrease PO2
• decrease pH due to increase PCO2

Question 6

APEX V/Q matching
is for OXYGEN
is for PHYSIOLOGICAL DEAD SPACE LIKE SITUATION

Answer 6

• ventilation(V)&raquo_space; perfusion(Q)
• 75/50= >1
• increase PO2 (PTB)
• decrease PCO2
• increase pH

Question 7

CASE:                         V/Q   1 apex
patient A                    .49 apex
patient B                    . 41 base
which of the ff has higher PO2
which of the ff has the higher PCO2
which of the ff has the higher pH

Answer 7

base is to CARBON DIOXIDE
apex is to OXYGEN

• patient A
• patient B
• patient A

Question 8

PEANUT INHALATION affecting the BASE

Answer 8

• is affecting/obstructing ventilation

- ratio will decrease towards the base

Question 9

AIR NOT USED

Answer 9

• dead space

- conducting zone