Zones safety Flashcards by William Kerns | Brainscape

Q

MRI Zones

A

4 zones

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Q

Zone 1

A

general public

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Q

Zone 2

A

Waiting room

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Q

Zone 3

A

screened patients

trained personel

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Q

Zone 4

A

exposed to magnetic field

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Q

training levels

A

level 1

level 2

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Q

level 1 training

A

minimal training

clerical

cleaning

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Q

level 2

A

extensive training

technologist

tech aid

RN

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Q

quench

A

release of helium

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Q

properties of helium

A

boil -451F/-269C

expands 8x

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Q

quench concerns

A

asphyxiation

pressure entrapment

ruptured ear drums

hypothermia

fire

induced voltages

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Q

Pregnant patients

A

no known harm

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Q

Contrast

A

gadolinium

heavy metal

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Q

Group 1 contrast

A

known nsf

omniscan

magnavist

optimark

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Q

group 2 contrast

A

no nsf

multihance

gadavist

doterem

prohance

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Q

Group 3

A

Eovist

Q

contrast pregnant patient

A

no agents FDA approved

risk/benefit

informed consent

Q

chelation

A

binding of gadolinium

macrocyclic

linear

Q

macrocyclic binding

A

most stable

caged gadolinium

Q

linear binding

A

less stable

wrapped around gadolinium

Q

gadolinium retention

A

no known harm

brain

nsf

shown in patients with normal renal function

Q

acute contrast reactions

A

N/V

allergic

anaphylaxis

Q

chronic reactions

A

retention

NSF

Q

NSF

A

thickening/hardening renal tissue

no known cure

Q

contrast on renal failure patients

A

risk vs benefit

dialysis ASAP

Q

contrast breast feeding

A

<.04% secreted in milk

still chelated

abstain 12-24 hrs if concerned

less than .0004% to infant

Q

Gadolinium Associated Plaques

GAP

A

sclerosis/hardening of skin

roundness in appearance

non location specific

itching or asymptomatic

contain collogen

w or wo nsf

3-5 yrs to manifest

Q

Anthropogenic Gad anomoly

A

gad being detected in water

increase in last 20 yrs

no related risks

no detailed studies

Q

A