Lab final Flashcards
An e-cyclinder contains how many PSI and Liters of Oxygen?
660 L and 2200 PSI
What does a flow meter do?
- A flowmeter controls the rate at which a specific gas is delivered
- Flowmeter tubes are gas specific
- Avoid excessive torque when closing flowmeters, because knobs can be twisted off
- The oxygen flowmeter should always be downstream in the series
What are the functions of the oxygen flush valve?
- Bypasses vaporizer and delivers oxygen directly to the gas outlet
- delivers oxygen to the circle at 35-75 L/min
- Dilutes the anesthetic gases in the system
Describe out of circuit vaporizers
- these vaporizers deliver a precise anesthetic concentration of anesthetic vapor
- gas within the vaporizer is split betwen the bypass and vaporization chamber
- VOC are agent specific
- output is NOT dependent on teh temperature and flow through the vaporizer
A pressure reduction valve reduces cylinder pressure to a fixed
50 PSI
Should you use the quick flush valve on a non-rebreathing system?
NEVER
A charcoal canister filters what?
Iso/sevo
But NOT Nitrous oxide or carbon dioxide
What is true about a rebreathing system?
- contains soda lime
- more resisitance and more componentss
- less gas waste and atmosphere pollution
- used in pts over 10kg
- flow rate is 20-50
What is a cause of this?
Rebreathing- doesn’t return to baseline
expired sodasorb
faculty expiratory valve
inadequate ins/exp flow
What is the gold standard for measuring blood pressure?
Direct Arterial blood pressure
What are the clinical uses for ECG?
- Determine heart rate and rhythm
- record electrical activity of the heart
- determine cardiac oxygenation status
- determine electroylyte abnormalities
NOT TO DETERMINE FUNCTION
Hypotension in SA is defined as a SAP <____
and a MAP<______
SAP< 80; MAP<60
What is the gold standard for measuring oxygenation and ventilation in an anesthesized patient/
Arterial blood gas
What indicate a light plane of anesthesia?
brisk palpebral reflex
nystagumus
lacrimation
What SpO2 reading correlates with PaO2 of 60?
90%