HIGH YIELD-ELECTRICAL AND RADIATION INJURIES

Question 1

factors that influence severity of electrical injuries?

2 types

Answer 1

current magnitude, duration, and path

resistance of intervening tissue

Question 2

T/F, can disrput reg pathways -nerve impulses and cardiac?

Answer 2

T

Question 3

what are the types of ionizing radiation?

Answer 3

alpha, beta, gamma, x-ray

Question 4

what are the units of radiation?

Answer 4

roentgen
rad
gray

Question 5

what is this of radiation?

unit of charge produced by x-rays or gamma rays that ionize a specific volume of air

Answer 5

roentgen

Question 6

what is this of radiation?

the dose of radiation that will produce absorption of 100 ergs or energy per gram of tissue

Answer 6

rad

Question 7

what is this of radiation?

the dose of radiation that will produce absorption of 1 joule of energy/kg of tissue

Answer 7

gray

Question 8

factors that contribute to radiation injury?

Answer 8

dose rate
rapidly dividing cells more predisposed
single dose more lethal than regional

Question 9

cellular mech of radiation injury?

Answer 9

overt necrosis

• depends on dose and time
• subcellular damage
• genetically damaged

Question 10

effects on organ systems from radiation?

Answer 10

desquamation and atrophy of skin

decrease in bone marrow fx

blood vessel endothelial damage

sterility

acute lung injury and radiation pneumonitis

CVD, GI disease, acute necrosis of kidney, cataracts

Question 11

major affect of acute whole body radiation exposure?

Answer 11

potentially lethal

acute radiation sickness
-LD50 toxicity