Gen Surg Path Flashcards

1
Q

ratio of formalin to tissue

A

15-20:1

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2
Q

immunofluorescence solution to identify autoimmune diseases of the skin and kidney

A

Michel’s solution

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3
Q

cytogenetics studies solution to identify genetic mutations

A

Hanks solution

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4
Q

flow cytometry solution to identify lymphoma

A

RPMI (Roswell Park Memorial Institute)

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5
Q

effect of formalin on tissue

A

hardens and minimizes shrinkage

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6
Q

effect of alcohol on tissue

A

coagulates proteins and causes shrinkage

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7
Q

these are used for delicate tissues such as the kidney and liver

A

papers

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8
Q

these are used for GI biopsies and skins

A

sponge

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9
Q

these are used for GYNs and smaller aggregates, but can be difficult to embed

A

mesh bags

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10
Q

how long does it take a normal tissue to fix if it is 2-3mm

A

2-3 hours

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11
Q

ideal tissue size

A

2.5 x 1.5 x 0.3 cm or thinner

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12
Q

at what rate does formalin penetrate tissue

A

1mm per hour

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13
Q

ionizing radiation that is heavy positively charged helium

A

alpha radiation

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14
Q

ionizing radiation that is lighter negatively charged electrons

A

beta radiation

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15
Q

ionizing radiation that is true electromagnetic waves

A

gamma

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16
Q

ionizing radiation that is photons of pure energy with the same properties of gamma

17
Q

unit of measuring radiation exposure

18
Q

This OSHA standard requires employers to protect workers from infection with human bloodborne pathogens in the workplace. The standard also requires employers to provide and pay for appropriate PPE for workers with occupational exposures.

A

Bloodborne pathogens standard

19
Q

This OSHA standard requires employers to provide and pay for PPE and ensure that it is used wherever “hazards of processes or environment, chemical hazards, radiological hazards, or mechanical irritants are encountered in a manner capable of causing injury or impairment in the function of any part of the body through absorption, inhalation or physical contact.”

A

The Personal Protective Equipment (PPE) standard

20
Q

This OSHA standard requires that the employer designate a Chemical Hygiene Officer and have a written Chemical Hygiene Plan (CHP), and actively verify that it remains effective. This standards also requires that laboratory personnel must receive training regarding the Laboratory standard, the CHP, and other laboratory safety practices, including exposure detection, physical and health hazards associated with chemicals, and protective measures (commonly referred to at the Laboratory Standard)

A

The Occupational Exposure to Hazardous Chemicals in Laboratories standard

21
Q

What are the five major elements of the Laboratory Standard

A
  1. Hazard Identification
  2. Chemical Hygiene Plan
  3. Information and Training
  4. Exposure Monitoring
  5. Medical Consultation and Examinations
22
Q

This OSHA standard requires employers to select and ensure that workers use appropriate hand protection when their hands are exposed to hazards such as those from skin absorption of harmful substances:

A

The Hand Protection standard

23
Q

What are two provided examples of an engineering control that is intended to reduce work-related hazards:

A

a. Chemical fume hoods
b. Biological safety cabinets

24
Q

Formalin is typically __ % formaldehyde by weight.

25
Q

solvents that are air contaminants

A

xylene and toluene

26
Q

OSHA estimates that 5.6 million workers in the healthcare industry and related occupations are at risk of occupational exposure to over 200 bloodborne pathogens, including (what three most common):

A

HIV, HBV, HCV

27
Q

The permissible exposure limit (PEL) for formaldehyde in the workplace is ___ parts formaldehyde per million parts of air (____ ppm) measured as an 8-hour time-weighted average (TWA).

28
Q

The most common injury is from a blade to the _________________ while sectioning a specimen:

A

non dominant hand

29
Q

___________ from coolant during a frozen section is a common cause of conversion to a positive TB skin test.

A

Aerosolization

30
Q

time from body into fixative

A

cold ischemic time

31
Q

The action level– which is the standard’s trigger for increased industrial hygiene monitoring and initiation of worker medical surveillance is _____ ppm when calculated as an 8-hour TWA

32
Q

safety diamond red portion

A

fire hazard

33
Q

safety diamond blue portion

A

health hazard

34
Q

safety diamond yellow portion

A

reactivity

35
Q

safety diamond white portion

A

specific hazard

36
Q

preparation and distribution of material SDS

A

hazard communication standard

37
Q

post analytic phase errors (2)

A

-pathologist sign outs
-frozen section intraoperative procedures

38
Q

analytic phase errors (6)

A

-processing
-embedding
-sectioning
-staining and coverslipping
-case assembly
-grossing/autopsy

39
Q

preanalytic phase errors (2)

A

-specimen procurement
-accessioning