Name the Number
Percentage of atmospheric oxygen commonly used when calculating the PO₂ of room air.
What is 21%?
Campbell introduced this oxygen-delivery device around 1960.
What is the Venturi mask?
I make up approximately 78% of atmospheric air.
What is nitrogen?
A gas regulator will not attach to a small cylinder. You should check this indexing feature rather than forcing the connection.
What is the pin index?
The direct movement of gas molecules from high concentration to low concentration is called this.
What is diffusion?
Percentage of Earth's atmosphere composed of nitrogen.
What is 78%?
The early Venturi mask provided precise concentrations including 24%, 28%, 35%, and this percentage.
What is 40%?
I am the least dense gas and can be mixed with oxygen.
What is helium?
A patient with severe upper-airway obstruction has marked work of breathing. This gas mixture may reduce turbulent resistance.
What is heliox?
The pressure generated inside a sphere increases when surface tension increases according to this law.
What is Laplace’s law
Atmospheric pressure at sea level in mm Hg.
What is 760 mm Hg?
This cylinder size is preferred over an H cylinder when transporting a patient.
What is an E cylinder?
I am a potent anesthetic when delivered in high concentrations.
What is nitrous oxide?
A newborn has pulmonary hypertension. This inhaled gas may be ordered.
What is nitric oxide?
A 25% oxygen mixture exposed to 760 mm Hg total pressure has this oxygen partial pressure.
What is 190 mm Hg?
Approximate partial pressure of oxygen in dry air at sea level.
What is 159 mm Hg?
Small medical-gas cylinders use this indexing system to prevent connection to the wrong regulator.
What is the Pin Index Safety System?
I am an inhaled pulmonary vasodilator used for pulmonary hypertension.
What is nitric oxide?
A transport cylinder contains only 900 psi while the patient requires 10 L/min. The therapist should recognize that the supply will last approximately this long.
What is 25 minutes?
A fluid stream bending around and remaining attached to a nearby surface demonstrates this effect.
What is the Coanda effect?
Boiling point of liquid oxygen in degrees Celsius.
What is –183°C?
Before attaching equipment to a large oxygen cylinder, briefly opening the valve is traditionally performed for this purpose.
What is clearing debris from the outlet/connector?
Mix me with helium and I may decrease work of breathing through a severely obstructed airway.
What is oxygen? / What is heliox?
A gas cylinder is exposed to increasing temperature. Its internal pressure will increase according to this gas law.
What is Gay-Lussac’s law?
Resistance to laminar flow is especially sensitive to changes in tube radius according to this law.
What is Poiseuille’s law?