SUR 102 CHAPTER 4 EXAM QUESTIONS
AND ANSWERS
Three types of gas commonly used in the OR - Answer- •oxygen- green
• nitrous oxide- blue
• compressed air-yellow
• black- nitrogen
Lights - Answer- • surgical lights provide a range of intensity and focused with minimum
heat
• freely and easily accessible for cleaning
• glare, free illumination, mimics, natural sunlight
• allows doctor to differentiate between arterial/Venus blood or other tissues
• WIDE FOCAL POINT That should not leave dark center
• HORIZONTAL/ VERTICAL PLANES
Environmental control - Answer- • POSTIVE LUMINAR AIRFLOW
• air exchange- minimum of 15 air exchanges per hour, recommended is 20 to 25 per
hour, CDC recommends HEPA filter and that at least 20% of air exchanges come from
outside air
• HIGH EFFICIENCY PARTICULATE AIR FILTER
Temp. And humidity - Answer- • 68-73 degrees according to ANSI (AMERICAN
NATIONAL STANDARDS INSTITUTE)
• relative humidity between 20-60%
• DECREASE STATIC DISCHARGE
Doors - Answer- • access to the OR should be kept closed during all procedures to
protect the internal from the external
• traffic should be limited, especially during open joints
• use the sub sterile to access during procedures
Computers - Answer- • used by circulator and anesthesia provider for documentation,
view, labs, and other testing information
Viewing boxes and monitors - Answer- • X - Ray films can be mounted on the wall or
display on a large TV
Cabinets - Answer- • should be recessed to avoid dust accumulation
AND ANSWERS
Three types of gas commonly used in the OR - Answer- •oxygen- green
• nitrous oxide- blue
• compressed air-yellow
• black- nitrogen
Lights - Answer- • surgical lights provide a range of intensity and focused with minimum
heat
• freely and easily accessible for cleaning
• glare, free illumination, mimics, natural sunlight
• allows doctor to differentiate between arterial/Venus blood or other tissues
• WIDE FOCAL POINT That should not leave dark center
• HORIZONTAL/ VERTICAL PLANES
Environmental control - Answer- • POSTIVE LUMINAR AIRFLOW
• air exchange- minimum of 15 air exchanges per hour, recommended is 20 to 25 per
hour, CDC recommends HEPA filter and that at least 20% of air exchanges come from
outside air
• HIGH EFFICIENCY PARTICULATE AIR FILTER
Temp. And humidity - Answer- • 68-73 degrees according to ANSI (AMERICAN
NATIONAL STANDARDS INSTITUTE)
• relative humidity between 20-60%
• DECREASE STATIC DISCHARGE
Doors - Answer- • access to the OR should be kept closed during all procedures to
protect the internal from the external
• traffic should be limited, especially during open joints
• use the sub sterile to access during procedures
Computers - Answer- • used by circulator and anesthesia provider for documentation,
view, labs, and other testing information
Viewing boxes and monitors - Answer- • X - Ray films can be mounted on the wall or
display on a large TV
Cabinets - Answer- • should be recessed to avoid dust accumulation
