MED GAS STUDY GUIDE ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
● Medical Gas. Answer: Purified gas used for therapeutic, diagnostic, or anesthetic purposes
● Oxygen. Answer: Most commonly used medical gas supporting cellular respiration
● Nitrous Oxide. Answer: Medical gas used as an anesthetic and analgesic
● Nitrogen. Answer: Medical gas used for cryogenic procedures and equipment operation
● Carbon Dioxide. Answer: Medical gas used for insufflation in laparoscopic procedures
● Medical Air. Answer: Compressed dry air meeting medical purity standards for patient use
● Helium. Answer: Medical gas used in respiratory therapy and MRI cooling
● Entonox. Answer: Pre-mixed blend of 50% oxygen and 50% nitrous oxide for pain relief
● Cylinder. Answer: High-pressure vessel storing compressed or liquefied medical gases
● Manifold. Answer: System connecting multiple cylinders to supply a single outlet
● Bulk Supply. Answer: Large-volume liquid storage system supplying medical gas to a
facility
● Cryogenic Liquid. Answer: Extremely cold liquefied gas such as liquid oxygen stored in
dewars
● Dewar. Answer: Insulated vacuum vessel storing cryogenic liquids
● Pipeline. Answer: Distribution system delivering medical gas throughout a facility
● Outlet. Answer: Point of use terminal where equipment is connected to the pipeline
● Zone Valve. Answer: Shutoff valve controlling gas supply to a specific area
● Master Alarm Panel. Answer: Central monitoring system displaying alerts for all medical
gases
● Area Alarm Panel. Answer: Local alarm indicating pressure changes in a specific zone
, ● NFPA 99. Answer: Standard for health care facilities governing medical gas systems
● HTM 02-01. Answer: UK health technical memorandum governing medical gas systems
● MGPS. Answer: Medical Gas Pipeline System distributing gas within a facility
● PCIS. Answer: Patient Care Isolating Switch shutting off gas and electrical services
● Pressure Regulator. Answer: Device reducing high storage pressure to safe working
pressure
● Pressure Relief Valve. Answer: Safety device venting excess pressure to prevent
over-pressurization
● Pressure Gauge. Answer: Instrument measuring gas pressure in a system
● Flow Meter. Answer: Device measuring and controlling the rate of gas delivery
● Vacuum. Answer: Negative pressure system used for suctioning in medical procedures
● WAGD. Answer: Waste Anesthetic Gas Disposal system removing excess anesthetic
gases
● AGSS. Answer: Anesthetic Gas Scavenging System protecting staff from gas exposure
● Terminal Unit. Answer: Indexed outlet preventing wrong gas connection in the pipeline
● DISS. Answer: Diameter Index Safety System preventing misconnection of gas cylinders
● Pin Index Safety System. Answer: Keyed cylinder valve system preventing wrong gas
attachment
● Color Coding. Answer: Standardized colors identifying different medical gas cylinders
● Oxygen Color UK. Answer: Black body with white shoulder in the United Kingdom
● Nitrous Oxide Color. Answer: Blue cylinder color for nitrous oxide in most standards
● Medical Air Color. Answer: Black and white cylinder identification for medical air
● Carbon Dioxide Color. Answer: Grey cylinder color identification
● Cylinder Valve. Answer: Valve controlling gas release from a compressed cylinder
QUESTIONS WITH ANSWERS GRADED A+
● Medical Gas. Answer: Purified gas used for therapeutic, diagnostic, or anesthetic purposes
● Oxygen. Answer: Most commonly used medical gas supporting cellular respiration
● Nitrous Oxide. Answer: Medical gas used as an anesthetic and analgesic
● Nitrogen. Answer: Medical gas used for cryogenic procedures and equipment operation
● Carbon Dioxide. Answer: Medical gas used for insufflation in laparoscopic procedures
● Medical Air. Answer: Compressed dry air meeting medical purity standards for patient use
● Helium. Answer: Medical gas used in respiratory therapy and MRI cooling
● Entonox. Answer: Pre-mixed blend of 50% oxygen and 50% nitrous oxide for pain relief
● Cylinder. Answer: High-pressure vessel storing compressed or liquefied medical gases
● Manifold. Answer: System connecting multiple cylinders to supply a single outlet
● Bulk Supply. Answer: Large-volume liquid storage system supplying medical gas to a
facility
● Cryogenic Liquid. Answer: Extremely cold liquefied gas such as liquid oxygen stored in
dewars
● Dewar. Answer: Insulated vacuum vessel storing cryogenic liquids
● Pipeline. Answer: Distribution system delivering medical gas throughout a facility
● Outlet. Answer: Point of use terminal where equipment is connected to the pipeline
● Zone Valve. Answer: Shutoff valve controlling gas supply to a specific area
● Master Alarm Panel. Answer: Central monitoring system displaying alerts for all medical
gases
● Area Alarm Panel. Answer: Local alarm indicating pressure changes in a specific zone
, ● NFPA 99. Answer: Standard for health care facilities governing medical gas systems
● HTM 02-01. Answer: UK health technical memorandum governing medical gas systems
● MGPS. Answer: Medical Gas Pipeline System distributing gas within a facility
● PCIS. Answer: Patient Care Isolating Switch shutting off gas and electrical services
● Pressure Regulator. Answer: Device reducing high storage pressure to safe working
pressure
● Pressure Relief Valve. Answer: Safety device venting excess pressure to prevent
over-pressurization
● Pressure Gauge. Answer: Instrument measuring gas pressure in a system
● Flow Meter. Answer: Device measuring and controlling the rate of gas delivery
● Vacuum. Answer: Negative pressure system used for suctioning in medical procedures
● WAGD. Answer: Waste Anesthetic Gas Disposal system removing excess anesthetic
gases
● AGSS. Answer: Anesthetic Gas Scavenging System protecting staff from gas exposure
● Terminal Unit. Answer: Indexed outlet preventing wrong gas connection in the pipeline
● DISS. Answer: Diameter Index Safety System preventing misconnection of gas cylinders
● Pin Index Safety System. Answer: Keyed cylinder valve system preventing wrong gas
attachment
● Color Coding. Answer: Standardized colors identifying different medical gas cylinders
● Oxygen Color UK. Answer: Black body with white shoulder in the United Kingdom
● Nitrous Oxide Color. Answer: Blue cylinder color for nitrous oxide in most standards
● Medical Air Color. Answer: Black and white cylinder identification for medical air
● Carbon Dioxide Color. Answer: Grey cylinder color identification
● Cylinder Valve. Answer: Valve controlling gas release from a compressed cylinder
