mechanical ventilation

Question 1

carina

Answer 1

point at which the trachea divides into right and left bronchi

Question 2

pulmonary shunt

Answer 2

% total blood flow that bypasses lung gas exchange sites (alveoli) while passing from right to left heart

• adds poorly oxygenated to oxygenated blood

Question 3

tension pneumothorax

Answer 3

progressive build-up of air in pleural space, usually due to lung laceration allowing air to escape but not return (“one way valve”)

• positive pressure vent may exacerbate
• obstructs venous return to heart

Question 4

chest tube

Answer 4

drain in pleural space to allow closed-chest drainage

• restores intrapleural pressure
• allows re-expansion of lung