Exam (elaborations)
Equipment - Respiratory Care questions with answers.
- Course
- Institution
Equipment - Respiratory Care questions with answers.
[Show more]
Seller
Follow
Content preview
Equipment - Respiratory Care questionswith answers.
oxygen conserving device (OCD) ANS -a type of regulator that senses inspiration, only delivering O2
during the inspiratory phase. The device may be electronic or pneumatic in its operation. Can easily
double the duration of a compressed gas cylinder.
oxygen concentrator ANS -a device that seperates O2 from RA (room air) for delivery of O2 - rich gas to
the pt (patient). most concentrators operate using molecular sieves, which adsorbs the nitrogen from
the air & pass the O2.
membrane enricher ANS -a type of home O2 therapy device that utilizes a semipermeable membrane to
seperate the nitrogen from the O2 in RA (room air)
molecular sieve concentrator ANS -an O2 concentrator that is a home O2 therapy device that separates
nitrogen from room air and passes O2. It works by means of adsorption using a sieve bed composed of
Zeolite
mercury barometer ANS -a device used to measure air pressure that employs a column of mercury
inverted into a mercury reservoir. Gas pressure against the surface of the reservoir causes the mercury
column to rise or fall.
mechanical manometer ANS -similar in consruction to an aneroid barometer. a diaphragm or evacuated
container is exposed to the area where pressure measurements is desired. Gas pressure against the
dighram of chamber causes a needle to move thru a gear set, much like a mechanicla watch that records
the pressure.
laminar gas flow ANS -smooth uniform gas flow in one direction. flow occurs @ velocities such that the
Reynolds # is less than 2,000.
kinetic theory ANS -theory that describes the behavior of an ideal gas. The theory states that 1-
molecules are in random motion, 2-any molecular collisions are completely elastic in nature (energy is
not lost, only transferred), 3-as temperature rises activity also rises, and , 4-there is no physical attracton
between gas molecules.
, Poiseuilles's Law ANS -the relationship between volumetric flow,viscosity pressre, length and velocity of
gas flowing thru a tube. Only applies for laminar flow. One important relationship is that as the radius of
a tube is decreased by 1/2 the resistance to gas, flow increased by 16 times.
Pressure ANS -measure of force divided by surface area
zone valves ANS -a safety valve that is placed in an O2 piping system such that gas flowmay be shut off
in the event of a fire or other emergency
viscious shearing ANS -a phenomenon by which gas or a liquid may be entrained into a high velocity gas
stream by shear forces and vortices or eddies;
Venturi mask ANS -a type of air entrainment mask that has been misnamed. This mask works using the
principles of viscious shearing and vorticity and is also referred to as a HIGH AIR FLOW w/O2
ENRICHMENT (HAFOE) device;
turbulent gas flow ANS -an erratic and irregular flow; having multiple vectors of direction; this type of
flow requires more energy to sustain;
Torr ANS -a unit of presssure named for Evangelista Torricelli, the inventor of the barometer. The units
in the SI systemm are mmHg;
Thorpe tube flowmeter ANS -a type of flowmeter that incorporates a tapered tube and a float to
measure gas flow; may be uncompensated or compensated for back pressure; compensation is
determined by the placement of the needle valve in relationship to the __ ___;
Reynolds number ANS -equation is ued to predict whether gas flow will be laminar or turbulent; the
calculation accounts for the gas' velocity, viscosity, density and the diameter of the tube; if the # is less
than 2000, flow will be laminar;
regulator ANS -is a combination of a reducing valve and a flowmeter into one device; it may employ
Bourdon flowmeters or Thropre tube flow meters, depending on their design;
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Professorkaylee. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78677 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now