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Med Gases Exam 1

QuestionAnswer
What is the standard working pressure? 50 psig
What is the tank factor for an H(or K) tank? 3.14
What is the tank factor for a G tank? 2.41
What is the tank factor for an E tank? 0.28
What color is an Oxygen tank? Green
What color is a compressed air tank? Yellow
What color is a helium tank? Brown
What color is a carbon dioxide tank? Gray
What color is a carbogen tank? Gray shoulder with green body
What color is a heliox tank? Brown should with green body
What color is a nitrous oxide tank? Light blue
What color is a cyclopropane tank? Orange
What color is a ethylene oxide tank? Red
What color is a nitrogen tank? Black
What is the formula for cylinder duration? Gauge Pressure x Factor / flow (lpm) = # min of gas flow left in tank
What are the therapeutic uses for helium? Used to treat sever airway obstruction/ status asthmaticus
What are the associated hazards with helium? Cannot support life, breathing 100% would cause suffocation
How much gas can an H(or K) tank hold in cubic feet? 244 cubic feet
How much gas can a G tank hold in cubic feet? 187 cubic feet
How much gas can an E tank hold in cubic feet? 22 cubic feet
How much gaseous oxygen does an H(or K) tank hold? 6900 liters
How much gaseous oxygen does a G tank hold? 5260 liters
How much gaseous oxygen does an E tank hold? 622 liters
What is the psi of a full H (or K), G, and E cylinder? 2200 psi
What are the three types of gases? Laboratory, Therapeutic, and Anesthetic
What are laboratory gases used for? Used for equipment calibration and diagnostic testing
What are therapeutic gases used for? Used to relieve symptoms and improve oxygenation of patients with hypoxemia
What are anesthetic gases used for? Combined with oxygen to provide anesthesia during surgery
What are the three fire-risk classifications? Non-flammable, oxidizing, and flammable
What are the three Safety Index Connector Systems? ASSS-American Safety Standard System, PISS-Pin Index Safety System, DISS-Diameter Index Safety System
What is the American Safety Standard System (ASSS) used for? Large cylinders and their attachments (larger than E); uses different thread pitches
What is the Diameter Index Safety System (DISS) used for? For low pressure gas connectors <200 psig; male and female matching type system
What is the Pin Index Safety System (PISS) used for? Small cylinders and their attachments; E tank or smaller; no threaded connection, two pins. 1 & 5 C/A connection, 2 & 5 O2 connection
One liter of liquid oxygen (LOX) equals how many liters of gaseous oxygen? 860 liters
How much does one liter of liquid oxygen (LOX) weigh? 2.5 lbs
One pound of liquid oxygen (LOX) equals how many liters of gaseous oxygen? 344 liters
What is Pascal's Law? The pressure at any point in a closed container is equal to the pressure at any other point in the container
What is the purpose of "cracking" the tank? Removes dust and debris from outlet
How many times more soluble in the blood is CO2 than O2? 20 times
What is brownian movement? Frantic, haphazard movement of molecules in a gas or liquid
How should medical gas cylinders be stored? Always used proper cart/ stands, never lay cylinders on the floor, sometimes E cylinders are laid on the patient's bed or in a slot under the bed
How is liquid O2 stored? Must be stored below -181.4 F or reverts to gas state; stored in cryogenic tanks
What is a zone valve? Located throughout a facility, can be shut down for maintenance or in case of fire
How do you accurately read a flowmeter that utilizes a float? Read flow at middle of ball
What are the signs of hypoxia? Tachycardia, hypertension, dizziness, mental confusion
What are the four types of hypoxia? Hypoxic, anemic, circulatory, histoxic
What causes hypoxic hypoxia? Low arterial oxygen tension (PaO2)
What causes anemic hypoxia? Anemia, hemorrhage (Uncommon: Carboxyhemoglobin/ Methemoglobin)
What causes circulatory hypoxia? Slow or stagnant (pooling) peripheral blood flow, arterial venous shunts, can be congenital, develop after surgery or trauma, or purposely created as a medical treatment
What causes histoxic hypoxia? Cyanide poisoning
What causes low arterial O2 tension (PaO2) associated with hypoxic hypoxia? Hypoventilation, high altitude, diffusion impairment (interstitial fibrosis, interstitial lung disease, pulmonary edema), ventilation-perfusion mismatch, pulmonary shunting
What causes left shift in O2 dissociation curve? Increased pH (alkalosis), decreased CO2, decreased body temperature, tighter binding; great affinity for Hgb, false sense of security: tissues starving for O2 despite high Hgb saturation
What causes right shift in O2 dissociation curve? Decreased pH (acidosis), increased CO2, increased body temperature, loose binding; O2 has less affinity for Hgb, tissues are oxygenated more easily, despite normal ABG
What are the five branching airways from mainstem to bronchioles? Mainstem bronchi, lobar bronchi, segmental bronchi, subsegmental bronchi, bronchioles
What are the five obstructive diseases? Cystic Fibrosis, Chronic Bronchitis, Emphysema, Asthma, Bronchiectasis
What is the distinguishing characteristic of Cystic Fibrosis? Poor body development, foul smelling stool in infants
What is the distinguishing characteristic of Chronic Bronchitis? "Blue bloaters" - cyanotic and peripheral edema
What is the distinguishing characteristic of Asthma? Cough with excessive white, thick, tenacious sputum
What is the distinguishing characteristic of Bronchiectasis? Sputum will form three layers
What is the distinguishing characteristic of Emphysema? "Pink Puffers" - Barrel chest and reddish skin
What is a regulator? Controls both flow and pressure
What is a reducing valve? Used to reduce gas pressure to a usable level
What is a safety relief valve? Vent the gas to the atmosphere if the tank is heated; prevent tank pressure from becoming too high
How are small quantities of O2 produced? Produced through chemical methods such as; electrolysis of water and decomposition or sodium chlorate
How are large quantities of O2 produced? Functional distillation and physical seperation
What is O2 used for? Relieving and treating symptoms associated with low O2
Does O2 support combustion? Yes
What is CO2 used for? Mixed with O2 to treat singultus and atelectasis
Does CO2 support combustion? No
What are the heliox conversion factors? 80/20: 1.8, 70/30: 1.6, 60/40: 1.4
Created by: ashconrad417