Shared Flashcard Set

Details

Noise, Rads, Vibration, Heat
Job hazards. Dr. Mainolfi
34
Medical
Graduate
01/08/2012

Additional Medical Flashcards

 


 

Cards

Term
Heat Syncope
Definition
hypo-tension with position
Term
Heat Cramps
Definition
Cramps with unknown cause
Term
Heat Rash
Definition
Inflammation of sweet glands
Term
Heat Stroke
Definition
CNS involvement at 104F. Irritability, euphoria, disoriented, convulsions, unconsciousness, dry skin.
RX; immediate
Term
Audiometric Test
Definition
- machinists
- hearing speech is related to hearing threshold at 500, 1000, 2000HZ.
- Classic cookie Bite notch in noise induced hearing loss peaks at 4000hz
Term
Hearing Loss
Definition
Bone conduction through the middle ear to the inner ear
Air conduction through the external ear to the ear drum.
Term
Sensorineural
Definition
Loud Noise
Medications
Aging
Term
Conductive
Definition
Otosclerosis
Infection
Head Injury
Term
Neural
Definition
Acoustic Neuroma

bone conduction intact
air conduction increased
Term
Meniere's
Definition
vertigo, tinnitus, fullness, decreased hearing of low ranges. Self limiting then perminant.
Term
UVA light
Definition
315-400 nm
lens damages
photochemical damages
skin damages
Term
UVB and UVC light
Definition
100-28 = UVC 280-315 = UVB
Corneal damage = welders flash
Photokeratitis of Retina
Term
Welders Flash
Definition
Wavelenght 440

rx; cold compress
eye patch
Term
Infared
Definition
optical non-ionizing 760 nm to 3,000nm
IRC&B = corneal dammage
IRA = Cataracts (thermal) retninal dammage
Term
Visable light spectrum
Definition
red 700
orange 650
yellow 600
green 550
blue 500-450
Violet 400

Prolongued exposure to viable light can cause retinal dammage with retinal burns , skin burns, and cataracts

blue light causes photochemical responce causing retinitis.
Term
Rads Conversion Grey
Definition
rads= measurement
Grey = how much energy the body abs.

1 grey = 100 rads
1 grey = 1 SV
Rem = q or w (rads)
q gamma = 1 rad
q alpha = 10 rads
q beta = 1- 5 rads
Term
Radiation exposure LD50
Definition
250 to 500 rads = LD50
Term
Radiation exposure limit
Whole Body general industry
Definition
0.005SV or 0.5rem or 0.5mSV per month
0.05Sv or 5rem or 50mSv per year

Pregnancy monthly equivalent dose 0.5mSv or .5rem per year

Eye dose 150mSv or .15SV or 15rem
Shallow dose 500mSv or .5Sv or 50rem
Term
Hand-Arm vibration
Definition
SXS:
Circulatory = vasospasm, white finger
Sensory/motor = numbness and loss of dexterity. Quantitative cutaneous sensory deficite. Nerve conduction abnormal.
Musculoskeletal = muscle , bone, joint disorder)

nerve proceedes vascular sxs.

1) 30-500Hz
2) long exposure
3) Smoking
4) heart health
5) cold
Term
presbycusis
Definition
hearing loss associated with aging
Term
stockholm scale
Definition
name of the clinical rating scheme that established seprate grading criteria for vascular and nerologic signs and symptoms in hand vibration syndrom
Term
What are the most damaging vibratory frequencies for nociceptive and vascular injury
Definition
200-500 hz
Term
What are the two broad categories for vibration exposure
Definition
Whole body vibration
Segmental vibration (hand-arm)
Term
Health effects from whole-body vibration occurs at what range of frequencies?
Definition
1-100HZ
Term
Cold- challenge plethysmography
Definition
test for evalutaing vascular component of HAVS
Term
Whole body vibration
Definition
Causes bone and cartilage degeneration, abnormal motor responce, suppression of reflexes, decreased tracking preformance, impairment of speach quality,increased HR and BP
Term
Radiation exposure limit to the lens of the eye
Definition
15 rem per year
or .15 Sv
Term
Radiation Max annual whole body effective dose for the general public
Definition
0.1 rem per year to 0.5 rem
Term
Acute Radiation Syndrome
Definition
- Dose of .5 to .75 grey. 50-75 rad
- radiation able to penetrate internal organs
- short time frame

Sxs; nausea, vomit, diarrhea, puritis, erythemia
can progress to difficulty breathing
Term
Radiation exposure 70-400
Definition
70 - 400 rads = Prodrome with low platelets and lymphocytes.
hair loss
Term
Radiation exposure 400-600
Definition
400-600 Rads = 50% will die within 2-3 months. Erythemia
Term
Radiation Exposure 600-800
Definition
600-800 rads = lethality >50% at 1-2 weeks with GI effects.

GI syndrome
Term
1000 Radiation exposure
Definition
600-800 rads = lethality >50% at 1-2 weeks with GI effects

>1000 rads = die within 2-3 days caused by CNS or CV effects.

GI effects nausea/ vomit / diarrhea/ blood with diarrhea / septicemia/hemopoietic syndrome.
Term
>3000 rad or 30 grey exposure
Definition
Immediate prodromal syndrome of n/v/d. hypo-tension, ataxia, lethargy, LOC, convulsion, death in days
Supporting users have an ad free experience!