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Flashcards in Mechanical ventilation handout Deck (17)
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1
Q

What is mechanical ventilation

A

Treatment for patients with respiratory failure ( or imminent failure) from inadequate oxygenation, ventilation or both

2
Q

What is the 50/50 rule

A

If PaO2 falls below 50 mmHg and PaCO2 RISES ABOVE 50…. VENTILATE

3
Q

What are setting ranges on a mechanical ventilator

A

Respiratory rate 8-22

FIO2- room air is 21%

4
Q

What are the 2 types of ventilators

A

Volume control

Pressure control

5
Q

What is volume control

A

TV= preset volume of oxygen and air

6
Q

What is pressure control

A

A alternative to volume control
Inspiration ends when the preset pressure is reached regardless of the column delivered
It allows the volume to change in response to intrathoracic pressure
IT BASICALLY HAS PRESET PRESSURES

7
Q

Pressure control ventilators pose less a risk for what

A

It decreases the risk of pressure related injury called barotrauma

8
Q

What is a risk of barotrauma

A

Because the highest level of positive pressure is in the chest, if the patient is anxious, it may frequently trigger the ventilation setting resulting in hyperventilation

9
Q

What is SIMV

A

More common

Not all spontaneous breaths are assisted leaving the patient to draw some breaths on there own

10
Q

If a patient is on SIMV with a RR of 10, how often will they recieve a breath

A

About once every 6 seconds

They can breathe on there own between machine assisted breaths

11
Q

What is SIMV used for

A

It helps preserve the strength of respiratory muscles, decreases the risk of hyperventilation and barotrauma, facilitates weaning. Often for patients who need short term ventilation

12
Q

What does PEEP do

A

It increase oxygenation in AC or SIMV modes

13
Q

What is pressure support

A

It provides a small amount of pressure during inspiration to help patient draw in a spontaneous breath. Makes it easier for patient to overcome the resistance of the ETT and used during weaning bc it reduces the WOB

14
Q

What does the HIGH PRESSURE ALARM INDICATE

A

Increased pressure in ventilation circuit

Parity t lying on tubing, kinks, coughing, sneezing, pt needs suctioned

15
Q

What are indications of low pressure alarms

A

Decreased pressure in ventilator circuit

Disconnect in system, loose tubing

16
Q

If a patient is on a ventilator and you notice apnea what should you do

A

Manual,y resuscitate AFTER disconnecting from ventilator with AMBU bag
Check pulse do CPR if needed

17
Q

When is pressure support indicated

A

In AC OR SIMV modes