Passive Care - Ultraviolet

Question 1

Ultraviolet: Action

Answer 1

Thermal
Photochemical
Germicidal
Antifungal

Question 2

Ultraviolet: Results

Answer 2

Vasodilation
Bacteriocidal
Phototaxis
Erythema - local (redness of skin caused by congestion of capillaries) due to the release of histamine (too much causes erythema ab igne)
Increases Vitamin D Synthesis (increase calcium)
Improves skin and muscle tone, elasticity, secretory functions
Stimulates metabolism
Increases reticulocytes

Question 3

Ultraviolet: Indications

Answer 3

Skin Conditions: fungal, herpes zoster (vesicles), dematological conditions, burns, psoriasis, carbuncles, wounds, decubitus ulcers

Bone Conditions: rickets, osteomalacia

Question 4

Ultraviolet: Contraindications

Answer 4

Hemorrhage
Vascular Disease
Suppurative Lesions
Tetracycline 
SLE

Question 5

Ultraviolet: Penetration

Answer 5

1-2 millimeters (superficial)

Question 6

Ultraviolet: Frequency

Answer 6

High

Question 7

Ultraviolet: Wavelength

Answer 7

Short Wave (far UV)
Long Wave (near UV)

Question 8

Ultraviolet: Types of UV devices

Answer 8

1. Hot Quartz: mercury helium gases, kromayer lamp
2. Cold Quartz: neon and mercury
3. Orificial: sore throats, cervicitis, 10-15 seconds (goggles)
4. Wood’s Lamp: aka black light, UV light filtered through nickel oxide glass used to diagnose fungal infections (tine)

Question 9

Erythema Patch Test aka Sleeve

Answer 9

1. Expose patient forearm
2. Cut five penny size holes in manilla envelope
3. Cover arm with manilla envelope
4. 30 - 36 inches from lamp, uncover holes successively at 5 second intervals starting at 15-30 seconds
5. Start treatment at time which produces a mild erythema (MED)

Question 10

Erythema

Answer 10

SED = sub erythemal dose
MED = minimal erythemal dose (starting point for treatment)
1 ED = red desquamation
2 ED = blister desquamation
3 ED = blister, char, desquamation

Question 11

Erythema Related To:

Answer 11

1. Patient Sensitivity
2. Intensity (vs) Distance (inverse square law)
3. Angle of Radiation (cosine law)

Question 12

Further Treatment:

Answer 12

1. As patient tolerance increases, increase duration by 15 sec/tx to a max three minutes
2. When this maximum has been reached, decrease the distance by two inches per treatment, approaching no loser than 18 inches

Question 13

What treatment do you start with?

Answer 13

MED

minimal erythemal dose

Question 14

What is the maximum treatment?

Answer 14

3 minutes at 18 inches

Question 15

What is the difference between UV and Infrared?

Answer 15

Infrared does NOT have photochemical, germicidal or anti fungal properties
With UV only the patient wears glasses, with Infrared both patient and doctor wear glasses