Cardio pull ICUs Flashcards
What is the hypoxia drive
When co2 is the stimuli for increasing RR and depth
This occurs when the co2 concentration is sensed by the brain. When a person is give O2 the periphery says that their is enough O2 and decreases RR &adepts
What is minute ventilation
Function of avolear ventilation and dead space
Where is the respiratory center of the brain
Pons and medulla
What are the direct (MD) ways to measure oxygenation
Aretial blood gas
What is normal O2 and co2 arterial pressure
O2- 80-100 mmHG
Co2- 35-45 mmHG
Saturated hgb absorbs what type of light?
Infrared
Desaturated hgb absorbs what type of light
Red
What does pulse of measure
The percentage of O2 saturated hgb
What doe chemoreceptors sense
Low O2
High co2
What do the pons and medulla primally sense
Changes in co2 and ph
What doe peripheral chemoreceptors sense
Oxygenation levels and ph
Peripheral chemoreceptors are primary for which population
COPD
What are the indications for O2 supplementation
Increased work of breathing
WOB 3mL/min or less 2% total metabolic rate
What are the two types of O2 delivery systems
Low flow
High flow
What are the characterizes of low flow O2
Enhances the person’s own oxygenation capabilities
Does not meet all of the persons O2 needs
Difficult to control the amount of o2supies
What does high flow provide
Meets all or most respiratory needs of a patient
What are the types of low flow
Nasal cannula
Face tent
Partial rebreather mask
Non rebreather mask
What are the types of high flow
Venturi mask
Tracheostomy collar
Ambu bag
What are the mechanical ventilation principals
Positve pressure from a vet pushes O2 into the lungs
This cause ventilation to begin in mechanical ventilation
Trigger variable
What is a limit variable
Pressure, volume or flow target that can’t be exceeded during inspiration
What is cycling
What stops instruction by a ventilator. What a present pressure, volume, or time has been reached
What is the normative pH value
7.35-7.45
What is the normative PaCO2
35-45
