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(2) Physical Modalities > S3_L1: LASER and Ultraviolet Radiation > Flashcards

S3_L1: LASER and Ultraviolet Radiation Flashcards

1
Q

TRUE OR FALSE:

LASER means Light Amplification by
Stimulated Emission of Radiation.

In the earlier years, sunlight was the form of therapeutic treatment & in 1917, the concept of “stimulated emission of radiation” was coined by Albert Einstein who is the biophysical father of laser.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

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2
Q

The following statements are true about laser light vs. other light forms, EXCEPT:

A. monochromatic - single wavelength & frequency, single color

B. coherent - all radiation waves moves in 1 direction

C. collimated - the multiple wavelengths are moving parallel to each other, not diverging

D. None of the above

A

D

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3
Q

Match the following years to its occurrence .

  1. Microwave Amplification by
    Stimulated Emission of Radiation (MASER) – 1st stimulated emission device [Shawlow, Townes, Basoc & Prochorov]
  2. Ruby LASER (red light), He-Ne LASER (helium neon light)
    [Theodore Maiman & Ali Javan]
  3. cold laser [white, et al.]
  4. Low-level LASER (LLLT) diode type – non- thermal effects of LASER
    [Endre Mester]
  5. Low-intensity LASER in rehabilitation

A. 1954
B. 1960
C. 1962
D. 1960-1970
E. 2002

A
  1. A
  2. B
  3. C
  4. D
  5. E
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4
Q

Match the following laser diodes to its light sources.
(can have multiple answers)

  1. Almost monochromatic
  2. Monochromatic Slightly
  3. Monochromatic
  4. Coherent
  5. Noncoherent

A. LASER Diodes
B. Light-emitting Diodes (LEDs)
C. Supraluminous Diodes (SLDs)

A
  1. C
  2. B
  3. A
  4. A
  5. B,C
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5
Q

Match the following laser diodes to its light sources.
(can have multiple answers)

  1. Collimated / Directional
  2. Not directional; spreads widely
  3. Spreads a little
  4. Shorter duration than LEDs; produces
    high-intensity light on a wide area (dec.
    than LEDs)
  5. Produces high- intensity light in one area
  6. Produces low- intensity light on wider areas

A. LASER Diodes
B. Light-emitting Diodes (LEDs)
C. Supraluminous Diodes (SLDs)

A
  1. A
  2. B
  3. C
  4. C
  5. A
  6. B
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6
Q

Match the following laser physical components
(can have multiple answers)

Active Medium (Lasing Agent)
1. Helium-Neon (HeNe)
2. Gallium Arsenide (GaAs) & Gallium-Aluminum- Arsenide (GaAlAs)

Resonance Chamber
3. Sealed glass cylinder
4. Diode p-n junction gap

Power source
5. Electrical

A. Gaseous (LASER)
B. Photodiode

A
  1. A
  2. B
  3. A
  4. B
  5. A,B
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7
Q

modified TRUE OR FALSE:

spontaneous absorption is where electrons moves outwards to higher energy shells/outer shell, it absorbs the light/radiation.

spontaneous emission is where electrons move inwards to lower energy shells/inner shell, it creates a radiation.

A

TT

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8
Q

TRUE OR FALSE:

Spontaneous emission is made of various wavelength (NOT monochromatic), no matter how many radiation wavelength & with varying wavelength, it’ll not create laser light.

Stimulated emission is made up of similar wavelengths, thus creating laser light since movement of electron from outer -> inner shell, it created multiple radiation wavelength that are similar to each other

A

TT

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9
Q

The following statements are true about penetration of light, EXCEPT:

A. Helium-Neon (HeNe) LASER =632.8 nm

B. Ruby LASER = 694.3 nm

C. Gallium-Aluminum-Arsenide LASER = 860 - 780 nm

D. Gallium-Arsenide (GaAs) LASER= 904 - 910.0 nm

E. None of the above

A

E

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10
Q

TRUE OR FALSE:

Longer wavelength; lower frequency
= DEEP
ex: IR light (700 – 1100 nm) = 2-4 cm

Shorter wavelength; higher frequency
= SUPERFICIAL
ex: Red light (600-700 nm) = few mm

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

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11
Q

TRUE OR FALSE:

Power Density (mW/cm^2) is the rate of energy flow

Power (mW) is the amount of power per unit area with a maximum of 100 mW/cm2

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

B,
Power (mW) is the rate of energy flow

Power Density (mW/cm^2) is the amount of power per unit area with a maximum of 100 mW/cm2

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12
Q

The following statements are true, EXCEPT:
A.
B.
C.
D.
E. None of the above

A
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13
Q

Match the following class to its effects

  1. No hazard because of the large-diameter beam or less-divergent beam
  2. No hazard
  3. Laser pointers; eye hazard with prolonged exposure
  4. Safe for momentary viewing; provokes blink reflex
  5. For therapy; permanent eye damage with brief exposure; viewing of diffused beam reflected from the skin is safe; minor burns with prolonged exposure
  6. Surgical and industrial cutting lasers; permanent eye damage; serious skin burns; burn clothing; use with extreme caution

Class - Power
A. 1 - <0.5mW
B. 1M
C. 2 - <1mW
D. 3A - <5mW
E. 3B - <500mW
F. 4 - >500mW

A
  1. B
  2. A
  3. D
  4. C
  5. E
  6. F
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14
Q

Match the following Laser classifications

Occupational Safety & Health Administration (OSHA) Classification
1. 4 / IV
2. 3B / IIIB

Single diode power
3. ≤ 500 mW
4. > 500 mW

Use
5. Therapy

A. Low-level Laser Therapy (LLLT)
B. High-level Laser Surgery (HLLS)

A
  1. B
  2. A
  3. A
  4. B
  5. A
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15
Q

Match the following Laser classifications

Use
1. Surgery

Physiologic Effect
2. Photobiomodulation
3. Photothermal

Therapeutic Effect
4. Enhance cellular function
5. Cellular destruction

A. Low-level Laser Therapy (LLLT)
B. High-level Laser Surgery (HLLS)

A
  1. B
  2. A
  3. B
  4. A
  5. B
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16
Q

TRUE OR FALSE the ff are correct formula for energy & Energy Density / Fluence:

Energy (J) = Power (W) x Time (s)

Energy Density (J/cm^2) = Energy (J) /
Area of irradiation (cm^2)

A

T,
*Therapeutic Range = 0.5 to 20 J/cm^2

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17
Q

which of the ff are NOT the effects of laser

A. Chromophore activation
B. Inc. Mitochondrial cytochrome oxidative metabolism
C. Photobiomodulation
D. Analgesia, Alter NCV
E.Inhibit bacterial growth
F. Anti-inflammation
G. Inc. collagen and protein synthesis
H. Enhanced cell metabolism (ATP & RNA)

A

G,
Inc. collagen and protein synthesis

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18
Q

The following statements are indications for LASER, EXCEPT:

A. Pain & Inflammation control, Wound healing

B. Dermal wounds & Tendinopathies

C. Myofascial / trigger points, Carpal tunnel syndrome

D. Rheumatoid arthritis & Osteoarthritis, TMJ disorders

E. None of the above

A

E

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19
Q

Which of the following statements are contraindications for LASER

A. Over the eyes/thyroid, Malignancy

B. Within 4-6 months of radiotherapy

C. Hemorrhage / Epilepsy

D. Low back / abdomen of pregnant patient

E. All of the above

A

E

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20
Q

The following statements are precautions for LASER, EXCEPT:

A. Epiphyseal plates in children
B. Impaired sensation/mentation
C. Photophobia
D. Metal implants
E. None of the above

A

E

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21
Q

The following statements are techniques of application for LASER, EXCEPT:

A. Stationary with contact
B. tationary with non-contact
C. Gridding (point-by-point)
D. Scanning
E. None of the above

A

E

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22
Q

The following statements are effects of laser, EXCEPT:

A. Inhibit bacterial growth

B. Red LASER (632.8 or 670 nm) for P. aeruginosa, S. aureus
[de Simone NA et al, 1999]

C. HeNe LASER (630 nm) at 1-20 J/cm^2
for P. aeruginosa, S. aureus, E. coli [Nussbaum EL et al, 2002]

D. Blue light (405 nm) at 10-20 J/cm^2
for P. aeruginosa, S. aureus
[Gufrey JS & Wilborn J, 2006]

E. None of the above

A

E

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23
Q

TRUE OR FALSE on effects of laser:

Promote vasodilation of small blood vessels.

Alters nerve conduction velocity and
regeneration by Red LASER.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

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24
Q

Match the following condition to its energy density
(can have multiple answers)

  1. 5-16
  2. 2-4
  3. 4-8
  4. 1.5
  5. 10-12
  6. 2-8
  7. 10-20

A. Soft tissue healing
B. Fracture healing
C. Acute arthritis
D. Chronic arthritis
E. Lymphedema
F. Neuropathy
G.Acute soft tissue inflammation
H. Chronic soft tissue inflammation

A
  1. A,B
  2. C
  3. D
  4. E
  5. F
  6. G
  7. H
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25
Q

Match the following UV bands

Wavelength
1. 320-400 nm
2. <100 - 290 nm
3. 290-320 nm

Other name
4. Long-wave UV; Near UV
5. Middle-wave UV
6. Short-wave UV; Far UV

Use
7. blacklight
8. skin erythema; sunburn
9. germicidal; bactericidal

A. UVA
B. UVB
C. UVC

A
  1. A
  2. C
  3. B
  4. A
  5. B
  6. C
  7. A
  8. B
  9. C
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26
Q

modified TRUE OR FALSE the ff are written in the correct documentation format:

LASER x <energy> x <duration>
on <body area> to <rationale></rationale></duration></energy>

LASER x <power> x <energy> x on <body area> to <rationale></rationale></energy></power>

A

TT

*May indicate the specific type of LASER if known (e.g. Red, Infrared, Ruby, GaAs)

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27
Q

modified TRUE OR FALSE about UVR:

Has a frequency of 1.65 x 10^15 to 7.5 x 10^14 Hz.

Wavelength is longer than visible light but shorter than x-rays

A

TF, Wavelength is shorter than visible light but longer than x-rays

28
Q

The following statements are characteristics of UVR, EXCEPT:

A. Method of energy transmission: Radiation (Phototherapy)

B. Photochemical effect

C. Reflected, refracted and absorbed within the first 1-2 mm (0.22mm) of human skin

D. 80-90% absorbed in the dermis

E. None of the above

A

E

29
Q

The following statements are Factors Affecting UV Penetration, EXCEPT:

A. Intensity & Wavelength of radiation

B. Power & distance of radiation source

C. Exposure duration, Frequency & Size of area

D. Thickness & Pigmentation of skin

E. None of the above

A

E

30
Q

TRUE OR FALSE:

Excessive natural UVR exposure will cause DNA damage.

It can also cause Cutaneous malignant
melanoma, Basal-cell & Squamous-cell
carcinoma.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

31
Q

TRUE OR FALSE on physiologic effects of UVR:

Erythema (Skin Redness) causes vasoconstriction of blood vessels due to
histamine release.

It is also caused by exposure to UVB or UVA after drug sensitization.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

D, Erythema (Skin Redness) causes VASODILATION of blood vessels due to
histamine release.

  • Skin redness is due to prostaglandin
    release
  • PRACTICAL APPLICATION: Proper Dosage (MED & Duration)
32
Q

TRUE OR FALSE on Delayed pigmentation of the skin:

Increased production and downward
migration of MELANIN granules and
oxidation of PREMELANIN.

Skin color affects penetration of UV
(Tanning = dec. Penetration)

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

D, Increased production and UPWARD
migration of MELANIN granules and
oxidation of PREMELANIN.

  • PRACTICAL APPLICATION: Examine Skin Phototype of Patients
33
Q

TRUE OR FALSE on Thickening of superficial layer of skin:

Thickening of epidermis (stratum
corneum) due to cell proliferation

Occurs usually after 72 hours after
exposure to UVR

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A
* PRACTICAL APPLICATION: Progressive higher dose needed

34
Q

Match the following equipments

  1. Long, Emits higher-intensity
    radiation & is used for larger areas
  2. Low pressure mercury discharge tubes with phosphor coating inside
    (Theraktin)
  3. Small, Emits radiation at constant intensity & is used for smaller areas like Hot & Cold Quartz
  4. Quartz tube with
    mercury (ionized vapor)
  5. dec. pressure & temperature with minimal erythema and (-) pigmentation
  6. Application at close proximity & needs 5 min warm-up
  7. Burner (argon gas and mercury)
  8. Inc. pressure & temperature with (+) erythema and pigmentation
  9. Applied ≥15” from the area & No need for warm-up

A. Mercury arc lamps
B. Fluorescent lamps
C. Hot quartz
D. Cold Quartz

A
  1. B
  2. B
  3. A
  4. D
  5. D
  6. D
  7. C
  8. C
  9. C
35
Q

Match the following

  1. Has Chemical Effect but No heat that is absorbed at 1-2 mm using luminous sources
  2. Thermal Effect that is absorbed as heat at 3 mm using luminous & non-luminous sources
  3. Delayed erythema (dark) & Lasts for several days
  4. Immediate erythema (light) & Lasts for 20-30 minutes

A. Ultraviolet
B. Infrared

A
  1. A
  2. B
  3. A
    4.B
36
Q

TRUE OR FALSE on physiologic effects of UVR:

It converts inactive provitamin D
to active vitamin D which is found to be effective treatment for psoriasis

A

T
* PRACTICAL APPLICATION: Indicated for Psoriasis

37
Q

TRUE OR FALSE:
UVB is bactericidal, that promotes wound healing using Desquamation that slough off dead skin cells

A

F, UVC is bactericidal

*PRACTICAL APPLICATION: Bactericidal effect in open wounds

38
Q

The following statements are true about Dosimetry, EXCEPT:

A. Irradiance (I), is the Intensity or power density that is measured by UV sensor on device with a unit of measurement of mW/cm^2

B. Exposure Duration (T), is the treatment time & the unit of measurement is sec

C. Dose per Treatment (Dt), is the amount of energy delivered to skin for
a single treatment with a formula of
Dt = I x T* & a unit of measurement of mJ/cm^2

D. Cumulative Dose (Dc) is the summation of all doses with a formula Dc = ∑ Dt & a unit of measurement of J/cm^2

E. None of the above

A

E,
*Bunsen-Roscoe Law / Reciprocity Law – inverse relationship of irradiance and exposure time

39
Q

TRUE OR FALSE:

FITZPATRICK SKIN PHOTOTYPE METHOD is more convenient
to use.

It is based on skin color & reaction to sun exposure

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

40
Q

TRUE OR FALSE on MINIMAL ERYTHEMAL DOSE METHOD:

UV-induced erythema, varies on each individual.

The Dose of UV radiation that will produce a barely detectable erythema is about 8-24 hours after exposure.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

41
Q

which of the following are DOSE-RESPONSE ASSESSMENT:

A. Suberythemal Dose (SED)
B. Minimal Erythemal Dose (MED)
C. First Degree Erythema (E1)
D. Second Degree Erythema (E2)
E. Third Degree Erythema (E3)
F. All of the above

A

F

42
Q

Match the following phototype

Skin color - tanning/sunburn history

  1. Dark Brown - Burns rarely; tans profusely
  2. Black - Never burns; intense tanning
  3. Light Brown - Burns moderately; tans gradually
  4. Moderate Brown - Burns minimally; tans well
  5. Lighter White - Burns easily; never tans
  6. Darker White - Burns easily; tans minimally

Choices:
type 1
type 2
type 3
type 4
type 5
type 6

A
  1. type 5
  2. type 6
  3. type 3
  4. type 4
  5. type 1
  6. type 2
43
Q

Match the following phototype to its board band UVB (BBUVB)

Initial dose - progression (secs.)

  1. 20 - 5
  2. 25 - 10
  3. 30 - 15
  4. 40 - 20
  5. 50 - 25
  6. 60 - 30

Choices:
type 1
type 2
type 3
type 4
type 5
type 6

A
  1. type 1
  2. type 2
  3. type 3
  4. type 4
  5. type 5
  6. type 6
44
Q

Match the following phototype to its narrow band UVB (NBUVB)

Initial dose - progression (secs.)

  1. 400 - 65
  2. 350 - 60
  3. 330 - 45
  4. 260 - 40
  5. 220 - 25
  6. 130 - 15

Choices:
type 1
type 2
type 3
type 4
type 5
type 6

A
  1. type 6
  2. type 5
  3. type 4
  4. type 3
  5. type 2
  6. type 1
45
Q

Match the following MINIMAL ERYTHEMAL DOSE METHOD to its Degrees of Erythema:

Latent period:Appearance:Duration

  1. 6 hrs: Definite pink; blanching : 2 days
  2. No eryhtema
  3. 6-12 hrs : Mild pink : <24 hrs
  4. 3 hrs:Very red; not blanching:3-5 days
  5. <2 hrs : ‘Angry’ red : 7 days

A. SED
B. MED
C. E1
D. E2
E. E3

A
  1. C
  2. A
  3. B
  4. D
  5. E
46
Q

Match the following MINIMAL ERYTHEMAL DOSE METHOD to its Degrees of Erythema:

Edema : Discomfort : Desquamation : Dose

  1. No erythema
  2. X : X : X: 1
  3. X: Slight soreness : Powdery : 2.5
  4. Some : Hot & painful : Thin sheets : 5
  5. Blister : Very painful : Thick sheets : 10

A. SED
B. MED
C. E1
D. E2
E. E3

A
  1. A
  2. B
  3. C
  4. D
  5. E
47
Q

Match the following MINIMAL ERYTHEMAL DOSE METHOD to its summary of dosimetry:

Dose : Progression : Frequency : body surface area (BSA)

  1. 10 : N/A : 1x/week : <25 cm^2
  2. 5 : 75% : 2x/week : 4%
  3. 2.5 : 50% : Every other day : <20%
  4. 25% : Daily; every other day : 50-100%
  5. X : 12.5% : Daily : 100%

A. SED
B. MED
C. E1
D. E2
E. E3

A
  1. E
  2. D
  3. C
  4. B
  5. A
48
Q

modified TRUE OR FALSE on GUIDELINES IN ALTERING INTENSITY:
* I (means Irradiance)

  1. Inew = (Iold / Dold^2) X Dnew^2
  2. Distance is altered when duration has reached the maximum of 5 minutes
A

TT

49
Q

modified TRUE OR FALSE:

For Cold Quartz (Kromayer lamp), the lamp is applied at least 1 inch away from the wound

For Hot Quartz lamp, the lamp is initially applied at 60-80 cm distance

A

TT

50
Q

TRUE OR FALSE on INDICATIONS
for Subacute and Chronic Psoriasis.

Narrow-band UVB (NB-UVB) using MED or E1 & also for vitiligo

PUVA (Psoralen + UVA) usually, E1 is used while E2 is for heels and elbows

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

51
Q

TRUE OR FALSE on indications for Cystic Acne / Acne Vulgaris:

E1 for back and shoulders.
E2 for face, neck and chest.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

B

E1 for face, neck and chest.
E2 for back and shoulders.

52
Q

The following statements are also used for PUVA, EXCEPT:
A. Eczema
B. Urticaria
C. Cutaneous T-cell lymphoma
D. Some photosensitive disorders
E. None of the above

A

E

53
Q

The following statements are INDICATIONS for Non-infected Open Wounds, EXCEPT:

A. surgical incisions, pressure / venous / arterial ulcers

B. Use UVC/UVB for germicidal effect & MED daily for surrounding skin

C. Granulation tissue: no treatment or suberythemal dose to MED only, no progression

D. Decubitus ulcers affecting the epidermis/dermis: E1/E2

E. None of the above

A

E

54
Q

modified TRUE OR FALSE on Infected Open Wounds:

For Thin yellowish slough, E2 daily and
unprogressed.

For Definite green or yellow slough, E3 daily and unprogressed while Black slough is E3 daily.

A

TT

55
Q

TRUE OR FALSE:

A
56
Q

The following statements are indications for UVR, EXCEPT:

A. Counter-irritation for pain relief (E3 applied that the discomfort masks the pain)

B. Alopecia using UVB at E1 or E2

C. Vitamin D deficiency

D. Uremic pruritus using SED UVB

E. None of the above

A

E

57
Q

TRUE OR FALSE:

Contraindications of UVR are over the Eyes, Skin Cancer, Pulmonary Tuberculosis.

Cardiac, Kidney or Liver disease, Systemic Lupus Erythematosus, Fever
or Taking birth control pills are also CI for UVR

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

58
Q

TRUE OR FALSE on precautions of UVR:

Photosensitivity or Photoallergy, & Photosensitizing medications.

Recent x-ray therapy & No dose of UV should be done until the effects of the previous treatment have disappeared.

A. Both statements are true
B. Both statements are false
C. Only the 1st statement is true
D. Only the 2nd statement is true

A

A

59
Q

The following statements are adverse effects of UVR, EXCEPT:
A. Burning

B. Premature aging of skin
(actinic damage)

C. Carcinogenesis

D. Eye damage (photokeratitis, conjunctivitis, cataracts)

E. None of the above

A

E

60
Q

Match the following chemicals to its uses

  1. antifungal
  2. antibiotics
  3. diuretic
  4. sensitizing agent
  5. tranquilizer

A. Psoralen (+)
B. Sulphonamides & tetracyclines (+)
C. Griseofulvin (+)
D. Phenothiazine (-)
E. Chlorthiazide (-)

A
  1. C
  2. B
  3. E
  4. A
  5. D
  • (+) = good chemical reactions, so we use it with UVA
  • (-) = negative chemical reactions
61
Q

TRUE OR FALSE:

if there’s UV overdose, IRR for 20 mins every hour for 6-8 hours must be done

A

T

62
Q

TRUE OR FALSE, TREATMENT CONSIDERATIONS of UVR includes:

  • Phototesting for the determination of MED
  • Time of appearance (last to appear)
  • Time of disappearance (first to disappear)
  • Characteristics / description
  • Calculation of dosage
  • Area of application
  • Progression
A

T

63
Q

The following statements are Steps in Determining Dosage, EXCEPT:

A. Determine the MED by Evaluating; use of erythrometer

B. Determine the dosage for initial treatment; the computed dose will be used for the initial session

C. Progress as necessary by computing for the progression of the dosage (NOTE: maximum of 5 min)

D. None of the above

A

D

64
Q

Case Analysis (Case #1)

You have a patient with psoriasis. Her back and posterior thighs are greatly affected and was prescribed with UVR treatment. Her MED is 30 secs.

A. What is the dosage to be given on the
patient?

B. What is the equivalent of this dosage?

C. What is the quality of desquamation expected with this dose?

D. How often is it given?

A

A. E1

B. P0E1 = MED x 2.5 (look at the table)
= 30 x 2.5
= 75 secs (don’t forget the unit of measurement)

C. Powdery

D. Every other day

65
Q

Case Analysis (Case #1)

You have a patient with psoriasis. Her back and posterior thighs are greatly affected and was prescribed with UVR treatment. Her MED is 30 secs.

A. What is the dosage for the next
treatment session (2nd session)?

B. What is the dosage for the next
treatment session(3rd session)?

A

A. P0E1 = 75 sec (computed on 1st session)
P1E1 = P0E1 + (P0E1 x 50%) (at the table)
= 75 + (75 X 50%)
= 112.50 secs → 112 sec

B. P1E1 = 112.5 sec (computed on 2nd session)
P2E1 = P1E1 + (P1E1 x 50%) (at the table)
= 112.50 + (112.50 X 50%)
= 168.75 secs → 168 sec

66
Q

Case Analysis (Case #2)

You have a 65 y/o patient who has
developed a sacral sore that presents with thick yellowish slough and foul smell. You opted to use UVR to aid the wound management program for this patient.

A. What is the dosage to be given on the
patient?

B. What is the initial dose on the infected part considering the MED is 15 sec?

C. Will you progress the treatment for the patient’s infected wound & surrounding area?

A

A. E3 (wound); MED (surrounding)

B. P0E3 = MED x 10 (look at the table)
= 15 x 10 = 150 sec

C. Not applicable for the wound, but
Yes for the surrounding skin

67
Q

Case 3

You have a patient who is prescribed with UVR due to psoriasis of the left heel. During the evaluation 1 week ago, MED of the patient was 60 seconds. During the first PT treatment session, you applied the machine at 70
cm.

A. What is the duration in second of your treatment for the 1st progression? (Note: express your answer in whole number.)

B. What is the distance in centimeter of your treatment during the 1st progression?

A

A. Use E2
POE2 = MED x 5
= 60 x 5
POE3 = 300 secs.

P1E2 = 300 + (300x75%)
= 300 + 225
= 525 secs.

B. use formula I(old)/D(old)^2 = I(new)/D(new)^2
* I = duration, D = distance

300 secs/70^2cm = 525 secs/D(new)^2
D(new) = 92.60cm

(2) Physical Modalities (12 decks)

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