Even More Control Methods

Question 1

How does flash sterilization work

Answer 1

Increased pressure and temperature = Decreased autoclave time

Question 2

Flash sterilization goes for 3-5 min at 30 PSI. What temperature does this mean

Answer 2

134C

Question 3

Ultrasonic cleaners sanitize (dont sterilize) how do they work?

Answer 3

Thousands of microbubbles form and collapse every second creating a scrubbing action

Question 4

Although ultrasonic cleaners do not sterilize, they can kill some bacteria, how do they do this?

Answer 4

The negative pressure from bubbles popping cause protein coagulation in the bacteria, disrupting the cell wall

Question 5

How does radiation/ UV light kill bacteria

Answer 5

Drying action when wavelength is 2500- 2800A

Question 6

Disadvantages of using radiation/ UV as a physical control method (3)

Answer 6

1.Poor penetration
2.Exposure
3. Toxic substances (H202)

Question 7

Ionizing radiation includes what two types of rays

Answer 7

xrays and gamma rays

Question 8

Which type of ionizing radiation is used for sterilization

Answer 8

gamma rays

Question 9

Surgical materials like sutures, blades, needles, rubber items, vaccines, and antibiotics are often sterilized by the manufacturer using what method

Answer 9

Gamma radiation

Question 10

Gasses (like the air we breathe) can be cleaned using what type of filter

Answer 10

HEPA