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(S&L) Reviews > Review 1 & 2 (10-21 April) > Flashcards

Review 1 & 2 (10-21 April) Flashcards

1
Q

What toxic substance is in Zenker’s fluid?

A

Mercury

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2
Q

What toxic substance is in Drabkin’s reagent?

A

Cyanide

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3
Q

What does not need to be terminally sterilized prior to disposal?

A

Urine

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4
Q

What is iodine used as?

A

An antiseptic

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5
Q

What is used to decontaminate non-metal surfaces?

A

Phenol

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6
Q

Define: TLV-STEL

A

Threshold limit value - short term exposure limited: concentration of a substance a worker can be exposed to for a maximum of 15min without adverse effects

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7
Q

What does BSC stand for?

A

Biological safety cabinet

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8
Q

Define: microorganisms

A

Tiny living organisms such as bacteria, viruses, etc

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9
Q

Name one type of non-ionizing radiation.

A

Microwave

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10
Q

Define “insidious hazard” and give one very common example of them. (2)

A
  1. Insidious hazard: unseen hazard

2. Aerosols

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11
Q

What disinfectant is good for decontaminating metals?

A

2% glutaraldehyde

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12
Q

What chemical must be stored under water?

A

Picric acid

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13
Q

Define: TLV

A

Threshold limit value: the concentration of a substance a person can be repeatedly exposed to during an 8hr day (40hr wk) without adverse effects

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14
Q

Name a common category of chemicals that are highly flammable.

A

Organic solvents

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15
Q

What is an autoclave used for?

A

Sterilization

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16
Q

What category do gloves, masks, and gowns fall under?

A

PPE

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17
Q

Define: L.D. 50

A

Lethal dose, 50%; the dose of a substance, when administered orally or via IV, kills 1/2 of the test animals

18
Q

List the 4 common categories of hazards. (4)

A
  1. Physical
  2. Chemical
  3. Biological
  4. Insidious (radiation)
19
Q

What class of fire is involved with electrical equipment?

A

Class C

20
Q

In what time frame must all accidents be reported within according to the Body Substance Precautions regulation?

A

Within 24hrs

21
Q

Name 4 things that may create aerosols. (4)

A
  1. Blending
  2. Grinding
  3. Centrifuging
  4. Opening a specimen tube
22
Q

When storing chemicals, what 4 types of things should be considered? (4)

A
  1. Alphabetical order
  2. Reactivity (light/dark, room temp/ cold, etc)
  3. Storage material and amount (glass/plastic, small amounts of organic solvents only)
  4. Solubility (keep acids separate from bases, keep strong oxidizers and reducing agents separate)
23
Q

Name the 9 (technically) requirements for a supplier label.

A
  1. Chemical name
  2. Name of supplier
  3. Reference to MSDS
  4. Hazard symbols (pictograms)
  5. Risk phrases
  6. Precautionary measures
  7. First aid measures
  8. Bilingual (English + French)
  9. Border
24
Q

Name the 4 types of transmissions for chemical and biological hazards. (4)

A
  1. Inhalation
  2. Ingestion
  3. Absorption
  4. Injections
25
Q

Which 2 common antiseptics are most suitable for destruction of HBV? (2)

A
  1. Iodine

2. Chlorhexidine

26
Q

What 3 factors determine the degree of radiation exposure? (3)

A
  1. Distance between the source and individual
  2. Time of exposure
  3. Type(s) of shielding used
27
Q

Differentiate between acid and base. (2)

A
  1. Acid = solution with pH below 7.0

2. Base = solution with pH above 7.0

28
Q

What is a notable feature of picric acid?

A

Explosive when dry

29
Q

What is a laminar flow hood?

A

Type II flow hood

30
Q

What is due diligence?

A

Employer must do everything reasonable to protect the health and safety of the workers

31
Q

Define: precautionary measures

A

Short statements describing the precautions to be taken when handling a controlled product (these are also found on MSDS and labels)

32
Q

Define: antiseptic

A

Solution used to remove only some microorganisms on the skin

33
Q

Define: physical hazard

A

Hazard arising from physical conditions of the area (incl compressed gas, fire, wet floor, electricity, sharp objects, heavy objects)

34
Q

Define: radiation

A

Energy which travels from a source through other materials

35
Q

Define: workplace label

A

Stamp, tag, mark, etc made in the lab that is used in the lab and includes a reference to the MSDS

36
Q

When is a workplace label used?

A

When a label is lost, illegible, or the product is transferred to another container

37
Q

Differentiate between ionizing and non-ionizing radiation. (2)

A
  1. Ionizing → energy is sufficient to remove electrons

2. Non-ionizing → energy can move or vibrate atoms, but not enough to remove electrons

38
Q

Define: L.C. 50

A

Lethal concentration, 50%: Concentration of toxicant inhaled by test animals for a known period of time and kills ½ of them

39
Q

Differentiate between L.D. 50 and L.C. 50. (2)

A
  1. Lethal Dose 50% Kills (L.D. 50)
    Dose of a substance, when administered ORALLY OR VIA IV, kills ½ of the animals tested
  2. Lethal Concentration (L.C. 50)
    Concentration of toxicant INHALED by test animals for a known period of time and kills ½ of them
40
Q

Define: universal precautions

A

Set of procedures for dealing with patients under the assumption that every direct contact with body fluids is infectious

(S&L) Reviews (4 decks)

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