Mechanical Ventilation.

Question 1

SIMV

Answer 1

synchronized intermittent mandatory ventilation; won’t help above and beyond the set number; gives max

Question 2

assist control

Answer 2

will help all breaths

Question 3

CPAP

Answer 3

positive pressure only, doesn’t initiate any breaths

Question 4

FiO2

Answer 4

fraction of inspired oxygen

Question 5

tidal volume

Answer 5

ml of air based on body weight; normal 400-600; 10-12 ml/kg after surgery

Question 6

SIGH

Answer 6

1 1/2 TV

Question 7

rate

Answer 7

setting; record both ventilator and patient

Question 8

PEEP

Answer 8

positive end expiratory pressure; helps keep alveoli open; increase peep for pt having a hard time oxygenating; increases FRC; negatively impacts cardiac output and venous return

Question 9

pressure support

Answer 9

decreases work of breathing; only on spontaneous breaths; helps overcome the resistance of the ventilator circuit

Question 10

exhaled volume

Answer 10

should be within 10% of tv

Question 11

peak inspiratory pressure

Answer 11

pressure it takes to deliver tv; should be <40; if too low, something is disconnected

Question 12

if the alarm sounds and you don’t know why…

Answer 12

bag them

Question 13

complications of ventilation:

Answer 13

decreased CO: the lower the normal CO, the more significant it will be.
O2 toxicity: never need to over-oxygenate
barotrauma: volutrauma, atelectrauma, biotrauma
gastric distention

Question 14

other complications:

Answer 14

infection, positive fluid balance, patient discomfort, psychosocial

Question 15

weaning:

Answer 15

Mentate, Oxygenate, Ventilate, Expectorate

Question 16

stop weaning:

Answer 16

dyspnea, rate >30 or <55, HR or BP increase or decrease by 20%