Modalities Flashcards
Removes loosely adhered debris, bacteria, exudate, dressing residue and topical agents.
Facilitates debridement
Promotes moist wound healing
Wound irrigation
Wound irrigation is indicated for
all wound wound types
Wound irrigation is contraindicated for
Wounds with active profuse bleeding
What is the optimal irrigation pressure
4-15 PSI
Optimal irrigation pressure is equivalent to ___ml syringe with a ___guage angiocatheter or ______ on the lowest setting (of 6 psi)
35ml
19 guage
waterpik
Alternatives to irrigation that can have the same effect are
- Soaking wound with saline moistened gauze
- Whirpool
- Pulsed lavage
Whirlpool is considered what type of debridement method?
Non-selective mechanical debridement, good method for removing a lot of necrotic tissue.
Immersion Technique for whirlpools should never exceed what temperature
102, small whirpools range 92-98, large whirlpools never go over 102
The purpose of this modality is similar to irrigation but also promotes circulation, decreases pain, and makes ROM exercises easier
Whirlpool
This modality is indicated for
infected non draining wounds
wounds with thick Eschar or exudate
wounds with loosely adherent, necrotic tissue or debris
Whirlpool
Contraindications for this particular modality include:
- clean/granulating wounds
- Draining macerated wounds
- Tunneling, underminning skinfolds that can be effectively irrigated
- Active bleeding
- For AIs that need to be treated at low temps (precaution)
- Precautions: be aware of patients that are hydrophobic, confused and combative when using this modality.
WHIRLPOOL
What is the treatment time for immersion whirlpool and what should patients be encouraged to perform?
10-20 min, patients should be encouraged to perform AROM activities during treatment.
T/F irrigating wounds immediately after whirlpool treatment has been shown to remove 4x as much bacteria as whirlpool alone
T
What is the frequency usually prescribed for immersion technique whirlpool?
2x/day for acute burns
3x/wk for less serve outpatient wounds.
Describe Showering Technique for whirlpool?
Patient extremity positioned over empty whirlpool, and sprayed with water 92-98 degrees F.
Whirlpool technique can include adding chemical additives to help reduce infection and cross contamination however why aren’t these additives typically used
they tend to be cytotoxic to human cells and puts patient at risk for delayed wound healing, contraindicated for chemical wounds
What are the alternatives to Whirlpool?
wound irrigation, soaking with saline-moistened gauze, pulsed lavage
The purpose of this modality is to irrigate wound bed with precisely calibrated pressure as well as promoting a moist wound environment and facilitating debridement
Pulsed lavage
This modality is indicated for wounds with cavities, tracts such as undermining, tunneling, and wounds that are infected. Wounds that require thorough irrigation or debridement.
Pulsed lavage
It is contraindicated to use this modality on wounds with exposed deep tissue, facial wounds, recent surgical procedures, latex allergy/sensitivity
Pulsed Lavage
What precautions should a prationer be aware of when using pulsed lavage?
- note wounds with new granulation
- if a patient is on anticoagulants
- deep tunneling wounds
- insensitivity
What does pulse lavage do when used with concurrent suction?
applies negative pressure to wound bed, removes irrigant/pathogens, enhances granulation
Describe the method of Saline Irrigation with pulse lavage
5-10 min, 4-5 psi, done everyday twice a day
Describe the method for general pulse lavage?
4-15 psi irrigation, warm 1-3L of irrigant to 102-106 F
time 15-30 min
wear PPE
To prevent cross contamination when using pulsed lavage what should the practioner do?
Administer treatment in a room with 4 walls
cover IV sites and open areas not being treated
wipe down all horizontal surfaces
Name the three electrical stimulation techniques that most research supports to enhance wound healing
Hi Volt pulsed current
Low intensity DC
Microcurrent Stim
What are the 7 ways e-stim facilitates wound healing?
- Restores current of injury-(restores skin battery, epidermis is electro neg and the wound is electro positive, e stim mimics the normal current of injury and stimulates wound healing)
- Causes galvanotaxis-stimulation of cells to move along electrical gradient, attracts macros, neutros, etc)
- Stimulates cells–>general increase in cell proliferation and ehnaces cellular function
- Increases blood flow
- Increases bactericidal abilities–through attraction of macros and neutros
- Reduces Edema-reducing microvascular perm
- Facilitates Debridement -autolytic, esecially if cathode is applied.
Hi-volt pulsed current is indicated for
chronic or recalcitrant wounds or CMMS category III/IV that fail to respond after 30 days of standard care. Pressure ulcers, diatbetic ulcers, surgical wounds
What are the precautions for Hi-Volt/estim
untreated osteomyletis (contra), VIs, neoplastic cells and DVTs, patients with sensory neuropathy. Should not be used in combo with topical agents containing heavy metal ions
Parameters for Hi-Volt
100-105 pps, pulsed, 5x a week can use positive or negative
If a patient is prone to abnormal scar formation what modality would be good to use
e-stim
Cathode is indicated to use for
infected wounds, and to reduce bioburden
Anode is indicated to use
to promote granulation and epithelization
Typical E-stim Method
Frequency: 80-115 Hz
Intensity: 75-200 V, submotor
Use which ever polarity would best address wound
45-60 min, 3-7 days per week, or 30 min 2x day
Enough evidence supports this modality to use on poorly healing wounds
Ultrasound
Parameters for Direct and Immersion Techniques for ultrasound
- Superficial wounds: 3 mhz
- Deep wounds: 1 mHz
- Pulsed at 20-25%
- Intensity: 0.5-1.0 W/cm,
continous 1.5 w/cm2 –>for remodeling dehised wounds. - Tx area divided into area equal to 1.5x the size of the sound head each zone treated for 2-3 min.
Acute wounds will be treated ___/day
Chronic wounds will be treated___/week
1-2x
3-5x
Low frequency ultrasound in combo with saline mist can assist with
debridement of fibrin and reduces wound bioburden (25-40)
This modality enhances all 3 phases of wound healing. Increases collagen deposition, granulation tissue formation, angiogensis, enhances wound contraction and improves scar pilability.
Ultrasound
Ultrasound is indicated for what type of wounds
- traumatic
- chronic or recalicitrant wounds
- post surgical wounds and grafts
- wounds with exposed deep tissue or hardward
What are the contraindications for ultraounds
- Necrotic wounds-Direct technique may not be effective
- Body cavity wounds
- Active bleeding
- severe AI
- DVT
- untreated osteo
- exposed blood vessels
- use caution with patients on anticoagulants.
List all the methods for ultrasound
- Direct
- periwound
- Immersion
- noncontact low-frequency
T/F You can use other dressings with Negative Pressure wound therapy
T
This modality is indicated for chronic wounds, post surgical wounds and grafts. Commonly used on pressure ulcers, diabetic ulcers traumatic or dehised wounds
NPWT
What are the alternatives to Ultrasound
E-stim, NPWT, topical growth factor, scar remodeling using parrafin, soft tissue mobs, silicone dressings and other debridement options.
This modality increases local blood flow, capillary filling and lymphatic flow, may help approximate wound edges, demonstrates bactericial effects, allows for moist wound closure.
NPWT
T/F there is insufficient evidence that NPWT is better than standard care
T
What are the contraindications for NPWT?
- Necrotic wounds
- Body cavity wounds
- Untreated Osteo
- Exposed blood vessels
- Caution with patients on anticoagulants
Method and Parameters for NPWT
- cut foam to fit within the wound
- Irrigate and debride as needed, tissue should be free from necrotic tissue, but can use if less than 20% non-viable tissue is being treated with enzymatic or sharp debridement
- protect periwound
- place tubing within bed and connect canister
- cover with firm drape to create air-tight seal, semiperm film drape
- Paramters:
50-175 mmHg at constant or intermittent - Time 12-72 hours
Hyperbaric Oxygen is defined as
100% oxygen mono or multiplace chamber administed at >1.5atm
What does the tissue oxygen pressure need to be for normal wound healing
> 40 mmHg
T/F HBO administration requires a physician on site.
T
This modality tends to increase the oxygen concentration gradient, promotes revascularization, collagen synthesis, bactericial effects and reduces edema.
HBO
What are the two absolute contras to HBO?
DVT and CHF
What are the precautions to HBO?
- Claustrophobia
- COPD
- Pregnancy
- Severe AI
- Isehmic wounds
Which modality may help prevent the loss of a limb
HBO
Tracutaneous oxygen monitoring is used to while patients are undergoing HBO for what reason
to help predict tx efficiacy
Describe method for HBo
- 100% oxygen at 1.5-2.5 atm
- treatment time: 90-120 min
- Frequency: 2x/day -3x/week
- Treatment length: 10-60 sessions
If ___% decrease in wound surface area is not noted after ____HBO treatment sessions, the wound is unlikely to respond to this modality.
50%, 10
This modality may facilitate healing in VI/AI ulcers, pressure ulcers, neuropathic ulcers
UVC
Short term treatment UVC is used to
reduce bioburden in critically colonized category III/IV pressure ulcers.
UVC wavelength
200-290nm
At what wavelength is UV used to treat psoriasis
280-400 nm
How deep does UVC penetrate?
0.1mm of skin, which only into the epidermis.
Bactericidal effects of UVB or UVC that reduceds wound bioburden occur at what wavelength
254 nm
UVA wavelength
UVB wavelength
- 320-400 nm
2. 290-320 nm
List the Ultraviolet effects
- Increases cell turnover
- ehances cell proliferation
- Growth Factor release
- Granulation
- ehances capillary blood floow
- Increases vascular permeability
- Ehances Ca absortpiton and conversion of provitamin D to previtmain D
T/F There is limited research that low-intensity laser therapy (HeNe), (GaAIAs) and (GaAs) lasers are effective in treating Vi/pressure/neuropathic ulcers
T
T/F low-intensity laser therapy is not currently reimbursed by medicare.
T
MIRE delivers near-infrared energy at ____wavelength to skin through flexible diode pads
890nm
MIRE supposedly used to improve blood flow to treat areas by up to
400%
MIRE has shown slight improvement in treating
diabetic neuropathy
T/F MIRE is not currently recommended
T
Granular Non draining wounds what are your treatment options
- Pulsed lavage with suction
- E stim
- US
- HBO
Granular, Draining wound what are your treatment options
- Pulsed lavage with suction
- Whirlpool
- E-stim
- US
- Low frequency US
- HBO
Necrotic, Nondraining wounds what are your treatment options
- Whirlpool
- Pulsed lavage with suction
- e-Stim
- Low frequency US
- HBO
Necrotic, draining wounds what are you treatment options
Whirlpool Pulsed lavage with suction E stim Ultrasound to periwound Low frequency US HBO
Closed wound with red, raised scar limiting ROM
continous ultrasound, with thermal effects there is a 5-7 min window of time that you can do scare mobs after