K-LASER Class IV Certification Flashcards
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Questions and Answers

What does LASER stand for?

Light Amplification by Stimulated Emission of Radiation

What is Laser?

Any device which can be made to produce or amplify electromagnetic radiation in wavelengths ranging from 180 nm to 1mm by the process of controlled stimulated emission

Laser energy is considered a stream of tiny particles of light called _____

Photons

Laser energy is absorbed by specialized receptors on the mitochondria called _____

<p>Chromophores</p> Signup and view all the answers

How long has laser been used?

<p>Over 40 years in Russia, Europe, etc.</p> Signup and view all the answers

When was the first therapy laser cleared by the FDA in the US?

<p>2002</p> Signup and view all the answers

When did Class IV lasers receive FDA clearance, and how long have they been used in Europe?

<p>2003; over 10 years</p> Signup and view all the answers

When was the first K-laser model (called the D-series) cleared by the FDA?

<p>March 2005</p> Signup and view all the answers

Who developed the first laser theory in 1916?

<p>Einstein</p> Signup and view all the answers

Who developed the first working laser in 1960?

<p>Maiman</p> Signup and view all the answers

Who is Endre Mester?

<p>The father of low level laser therapy</p> Signup and view all the answers

In the late 1960's, what did Endre Mester's device do?

<p>It was made to attempt to cure cancer in rats but it was unsuccessful due to low doses. It did heal superficial conditions faster.</p> Signup and view all the answers

What is Photobiomodulation (PBM)?

<p>A term adopted in 2005 by the North American Association of Laser Therapy (NAALT) as the therapeutic utilization of light</p> Signup and view all the answers

How do surgical lasers cut and destroy tissue?

<p>Excess heating</p> Signup and view all the answers

What is the effect of a surgical laser?

<p>Photothermal</p> Signup and view all the answers

What are two benefits of surgical lasers?

<p>Seals blood vessels for less bleeding</p> Signup and view all the answers

What are the risks of surgical lasers?

<p>Hemorrhage, infection, perforation of organs</p> Signup and view all the answers

What is the main benefit of a therapeutic laser?

<p>Stimulates cell function</p> Signup and view all the answers

What are the effects of therapeutic laser?

<p>Photochemical and Photobiostimulative</p> Signup and view all the answers

What does therapeutic laser (photon) cause in cells which leads to normalization of cell function and therefore pain relief/quicker healing?

<p>Increased ATP production</p> Signup and view all the answers

What cells are more affected by Laser Therapy than normal cells?

<p>Damaged and compromised</p> Signup and view all the answers

What are the three properties of laser light?

<p>Monochromatic, coherent, collimated</p> Signup and view all the answers

Define Monochromatic.

<p>One specific wavelength (measured in nanometers) therefore one color</p> Signup and view all the answers

Define Coherent.

<p>Waves are synchronized in space and time</p> Signup and view all the answers

Define Collimated.

<p>Narrow beam of light in a specific direction</p> Signup and view all the answers

What is LED?

<p>Light Emitting Diodes</p> Signup and view all the answers

LEDs are not _____, therefore are not true laser therapy devices.

<p>Coherent</p> Signup and view all the answers

Jan Tuner did 13 separate studies on what?

<p>Laser vs. LED. Laser wins every time!</p> Signup and view all the answers

Define the EM spectrum.

<p>Entire range of light radiation from gamma rays to radio waves</p> Signup and view all the answers

What is the range of visible light?

<p>400nm to 700 nm</p> Signup and view all the answers

What type of light is K-Laser?

<p>Visible and infrared (invisible)</p> Signup and view all the answers

K-series lasers have how many diodes with how many separate wavelengths?

<p>3 diodes, 3 separate wavelengths, 8 or 12 Watts max CW power</p> Signup and view all the answers

What are the 3 diodes of K-Series Lasers?

<p>Aiming beam - 660 nm; Treatment beam #1 - 800 nm; Treatment beam #2 - 970 nm</p> Signup and view all the answers

What are the specifications for the K-series Aiming beam?

<p>It is 660 nm. It is only 3 milliwatts, therefore visible for guidance and to assess patency of the fiber optic cable.</p> Signup and view all the answers

What are the specifications for the K-series Treatment Beam #1?

<p>It is 800 nm, so it is absorbed least by melanin (skin), hemoglobin, and water. It is best for deep tissue stimulation such as trigger points, ligaments, joint capsules, and intra-articular surfaces.</p> Signup and view all the answers

What are the specifications for the K-Series Treatment Beam #2?

<p>It is 970 nm, so it is more absorbed by water, creating microscopic thermal gradients, responsible for warming effect.</p> Signup and view all the answers

K-Series Treatment Beams 1 and 2 are _____ and _____ so they can reach deeper targets.

<p>Invisible and Infrared</p> Signup and view all the answers

CUBE3 LASER has how many diodes?

<p>4 diodes, 8 or 12 watts max CW power</p> Signup and view all the answers

What are the 4 diodes of CUBE3?

<p>Aiming beam - 660 nm; Treatment beam #1 - 660 nm; Treatment beam #2 - 800nm; Treatment beam #3 - 970nm</p> Signup and view all the answers

What are the specifications of the CUBE3 Laser Aiming beam?

<p>Same as K-series; it is only 3 milliwatts therefore visible for guidance and to assess patency of the fiber optic cable.</p> Signup and view all the answers

What are the specifications of the CUBE3 Laser Treatment Beam #1 - the visible red treatment beam?

<p>It is 660nm, 100 milliwatts; absorbed in top 2-4 millimeters of skin; best for superficial conditions.</p> Signup and view all the answers

What are the specifications of the CUBE3 Laser treatment Beam #2?

<p>800nm is absorbed least by melanin (skin), hemoglobin, and water, therefore penetrates deepest and is best for deep tissue stimulation.</p> Signup and view all the answers

What are the specifications of the CUBE3 Laser Treatment Beam #3?

<p>970nm is more absorbed by water, creating microscopic thermal gradients, responsible for warming effect.</p> Signup and view all the answers

The CUBE4 Laser has how many diodes?

<p>5; 15 Watts max CW power</p> Signup and view all the answers

What are the CUBE4 laser diodes?

<p>Aiming beam - 660 nm; Treatment beam #1 - 660 nm; Treatment beam #2 - 800nm; Treatment beam #3 - 905 nm; Treatment beam #4 - 970 nm</p> Signup and view all the answers

What are the specifications of the CUBE4 Aiming beam?

<p>660nm, only 3 milliwatts therefore visible for guidance and to assess patency of the fiber optic cable.</p> Signup and view all the answers

What are the specifications of the CUBE4 Treatment beam #1 Visible red treatment beam?

<p>660nm, 100 milliwatts; absorbed in top 2-4 millimeters of skin; best for superficial conditions.</p> Signup and view all the answers

What are the specifications of the CUBE4 Treatment beam #2?

<p>800nm is absorbed least by melanin (skin), hemoglobin, and water, therefore penetrates deepest and is best for deep tissue stimulation.</p> Signup and view all the answers

What are the specifications of the CUBE4 Treatment beam #3?

<p>905nm is at peak of absorption by hemoglobin; causes release of oxygen, increased tissue oxygenation.</p> Signup and view all the answers

What are the specifications of the CUBE4 Treatment beam #4?

<p>970nm is more absorbed by water, creating microscopic thermal gradients, responsible for warming effect.</p> Signup and view all the answers

The CUBE performance laser has the same wavelengths as what?

<p>CUBE4 - max 18 watts CW for Veterinary models, 15W for human models</p> Signup and view all the answers

What two things have to happen for therapeutic effects to be realized?

<p>Energy must penetrate deep enough to reach the target tissue; enough energy must be present at the desired tissue depth to stimulate a physiological effect and promote healing.</p> Signup and view all the answers

How many wavelengths are ideal when injury has affected a region of the body at various depths?

<p>Multiple</p> Signup and view all the answers

Some laser therapy is ineffective due to using __________ or __________.

<p>Inappropriate wavelength or too low dosage</p> Signup and view all the answers

What three things inhibit photons?

<p>Reflection, absorption, scatter</p> Signup and view all the answers

Only _____% of light is absorbed in the treated area, therefore a higher dosage is needed for deeper targets.

<p>20-40</p> Signup and view all the answers

How much light is absorbed by the skin and subcutaneous tissue?

<p>50%</p> Signup and view all the answers

What are the most common pain generators in the c-spine?

<p>Facet joints; Neck pain and headaches - C2/C3 facets; Neck and shoulder pain - C5/C6 facets</p> Signup and view all the answers

What is the number one cause of chronic neck pain?

<p>Zygapophyseal joint dysfunction</p> Signup and view all the answers

What is the most common pain generator in the L-spine?

<p>IVD (annulus fibrosis and PLL) - most common cause of low back pain</p> Signup and view all the answers

Power is measured in _____

<p>Watts</p> Signup and view all the answers

Power equals

<p>Energy/Time</p> Signup and view all the answers

Energy is measured in _____

<p>Joules</p> Signup and view all the answers

Energy equals

<p>Power x time</p> Signup and view all the answers

1 watt equals

<p>1 Joule/1 second</p> Signup and view all the answers

For better results, there is a trend in laser therapy to...

<p>Increase power and dose</p> Signup and view all the answers

What is Wavelength?

<p>Measured in nanometers (nm) from crest to crest</p> Signup and view all the answers

There is no point in increasing dose or power with a __________ because it will not penetrate deeply.

<p>Short wavelength</p> Signup and view all the answers

What wavelength is the best penetration reached at?

<p>800nm wave</p> Signup and view all the answers

What diodes do the K-Laser models use?

<p>GaAIAs - Gallium Aluminum Arsenide</p> Signup and view all the answers

What is power density?

<p>The degree of concentration of power output; PD = Power/area (cm squared)</p> Signup and view all the answers

What does Power density determine?

<p>The nature of the laser-tissue interaction i.e. photochemical vs. photothermal</p> Signup and view all the answers

What is energy density?

<p>Power x Time/Area</p> Signup and view all the answers

What is the most important factor in determining tissue reaction?

<p>Energy Density</p> Signup and view all the answers

What are the three types of wave emission?

<p>Continuous wave, pulsed mode, intense super pulsed (ISP)</p> Signup and view all the answers

Describe continuous wave.

<p>The laser light is on continuously. There is no change in intensity. Greatest energy in the least time.</p> Signup and view all the answers

Describe pulsed mode.

<p>Pulsing is on/off and is referred to as the duty cycle.</p> Signup and view all the answers

Frequency is _____ and is measured in _____

<p>The number of pulses/second; Hertz</p> Signup and view all the answers

How many Hz has an analgesic effect?

<p>2Hz</p> Signup and view all the answers

Describe Intense Super Pulsed (ISP).

<p>60% duty cycle; 'thermal relaxation time' between the pulses - delivers more light deep into the body without overheating the skin surface.</p> Signup and view all the answers

How many Laser accidents have occurred between 1964 and 1996?

<p>330; 73% were eye exposures, 68% had permanent injury</p> Signup and view all the answers

What is Accessible Emission Level (AEL)?

<p>Magnitude of radiation of a specific wavelength; sets limit on the power levels that can be emitted and determines 'class' of the laser</p> Signup and view all the answers

What is the Maximum permissible exposure (MPE)?

<p>Allowed exposure without adverse biological changes to the eye or skin</p> Signup and view all the answers

What is the nominal hard zone (NHZ)?

<p>The area in which laser energy either from direct, reflected, or scatter source exceeds the MPE</p> Signup and view all the answers

What is the NHZ for K-laser?

<p>21 feet in any direction</p> Signup and view all the answers

All personnel in the NHZ should wear what?

<p>K-Laser specific eyewear</p> Signup and view all the answers

Who is the LSO?

<p>Laser Safety Officer - the person responsible for monitoring, evaluating, and controlling potential hazards</p> Signup and view all the answers

List the precautions for performing K-Laser Therapy.

<ol> <li>Authorized personnel should only use the laser; 2. EVERYONE in NHZ should wear K-laser specific eyewear; 3. Must display 'LASER IN USE' signs; 4. Laser should be placed in STANDBY mode or OFF position when not delivering treatments; 5. NEVER put the laser on standby mode when unattended; 6. Laser can run in 'idle' for several hours; 7. Never press the finger switch without checking settings and position of hand piece.</li> </ol> Signup and view all the answers

List the Eye Protection Specifications.

<ol> <li>Never point the laser directly at the eyes; 2. ALL present must wear K-Laser specific eyewear; 3. Don't use eyewear from other companies, or sunglasses; 4. Only remove eyewear after unit is placed in standby or off mode; 5. Corneal and retinal areas are most susceptible to injury.</li> </ol> Signup and view all the answers

What are the roles of the LSO?

<ol> <li>Should have an ongoing safety program which is regularly reviewed; 2. Should classify all lasers in the facility; 3. Should give proper training to all personnel and continuing education; 4. Should install safety controls and regulate maintenance needs; 5. ALL PERSONNEL SHOULD READ SAFETY MANUAL.</li> </ol> Signup and view all the answers

What are the K-Laser Safety Features?

<ol> <li>Emergency power on/off switch; 2. Electronic access key; 3. Safety interlock; 4. Power on/off visual indicator; 5. Laser emission indicator; 6. Internal laser energy monitor; 7. ALL present should wear K-Laser specific eyewear.</li> </ol> Signup and view all the answers

What are the K-Laser Operations?

<ol> <li>Never operate with non-grounded circuit or wet area; 2. Never open the device; 3. Never operate around flammable gases; 4. Never use laser until disinfectants are allowed to evaporate.</li> </ol> Signup and view all the answers

What are the Absolute contraindications for human patients?

<ol> <li>Never point directly into the eyes; 2. Never laser directly over the thyroid gland; 3. Never use K-Laser on a patient with a spinal cord stimulator (SCS) implanted; 4. Never use K-Laser on a pregnant patient; 5. Never use K-Laser on a cancer patient.</li> </ol> Signup and view all the answers

What are the relative contraindications for human patients?

<ol> <li>Don't apply laser therapy over pacemaker or other electronic devices; 2. Recent cortisone injections; 3. Areas of recent hemorrhage; 4. Patient using immunosuppressant drugs.</li> </ol> Signup and view all the answers

What are the absolute contraindications for Animal Patients?

<ol> <li>Never point directly into the eyes; 2. Never laser directly over the thyroid gland.</li> </ol> Signup and view all the answers

What are the relative contraindications for human patients?

<ol> <li>Do not laser directly over the gravid uterus; 2. Do not laser directly over cancer tumors.</li> </ol> Signup and view all the answers

What are some adverse effects of laser therapy?

<p>(Rare and temporary) 1. Temporary increase in pain during application; 2. Mild pain the day after treatment; 3. Mild bruising from direct pressure of tip; 4. Temporary dizziness; 5. Skin reaction especially when using photosensitizing meds.</p> Signup and view all the answers

What is photosensitivity?

<p>A body detoxification reaction; some patients may develop a temporary rash after treatment - no tissue damage.</p> Signup and view all the answers

What is the sleeve test?

<p>Increasing doses are applied to see reactions determine photosensitivity and regulate laser dosage.</p> Signup and view all the answers

How is the sleeve test performed?

<p>5 one-square-inch openings in a piece of cardboard one inch apart over the abdomen; Laser area #1 for 60 secs, #2 for 120 secs, etc. The patch where redness occurs after 8 hours is the minimum erythemal dose.</p> Signup and view all the answers

Study Notes

Laser Fundamentals

  • LASER stands for Light Amplification by Stimulated Emission of Radiation.
  • A laser device produces or amplifies electromagnetic radiation between 180 nm and 1mm via stimulated emission.
  • Laser energy consists of photons, which are tiny particles of light.

Mechanisms and Effects

  • Laser energy is absorbed by chromophores in mitochondria, aiding cellular function.
  • Photobiomodulation (PBM) is the therapeutic use of light, influencing healing and pain relief through increased ATP production in compromised cells.
  • Surgical lasers cut tissue through excess heating, producing a photothermal effect.
  • Therapeutic lasers stimulate cell function via photochemical and photobiostimulative effects, not thermal.

History and Development

  • Lasers have been in use for over 40 years; the first therapy laser was FDA-cleared in 2002.
  • Class IV lasers received FDA clearance in 2003 after being used in Europe for over a decade.
  • The first K-laser model received FDA clearance in March 2005.

Types of Lasers and Specifications

  • K-Lasers utilize three diodes with specific wavelengths: 660 nm (aiming), 800 nm (deep tissue), and 970 nm (microscopic thermal gradients for warming).
  • CUBE lasers (CUBE3 and CUBE4) have varying diode configurations, with specifications demonstrating absorption characteristics suited for different tissue depths.
  • 800 nm wavelengths provide optimal penetration, while higher wavelengths create thermal effects.

Laser Application and Safety

  • Therapeutic effects are maximized when energy penetrates to target tissue at the appropriate depth and dosage.
  • Inhibitory factors for effective laser therapy include reflection, absorption, and scatter of photons. Only 20-40% of light is absorbed in the treated area.
  • Operator precautions include wearing specific eyewear, displaying "LASER IN USE" signs, and ensuring the laser is kept in STANDBY when not in use.

Contraindications and Adverse Effects

  • Absolute contraindications include avoiding laser use on pregnant patients, those with cancer, or over thyroid glands and spinal cord stimulators.
  • Relative contraindications involve caution around pacemakers, recent steroid injections, and areas with decreased sensory perception.
  • Possible adverse effects are generally rare and temporary, such as mild pain post-treatment or skin reactions in photosensitive patients.

Energy and Power Measurements

  • Power is expressed in watts, with energy measured in joules; energy equals power multiplied by time.
  • Energy density is crucial for determining tissue reaction, where higher density typically promotes better therapeutic outcomes.

Laser Emission Types

  • Three types of wave emissions exist: Continuous wave delivers consistent energy, Pulsed mode involves on/off cycles impacting average power, and Intense Super Pulsed allows deeper delivery without overheating.

Safety and Oversight

  • A Laser Safety Officer (LSO) monitors safety practices, trains personnel, and manages laser classifications and maintenance.
  • The Accessible Emission Level (AEL) defines the radiation limits for laser classes, while Maximum Permissible Exposure (MPE) indicates safe exposure levels to prevent injury.

Testing and Regulation

  • The sleeve test determines individual photon sensitivity and regulates appropriate dosages.
  • Redness after exposure in the sleeve test indicates the minimum erythemal dose, guiding dosage adjustments in treatments.

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Test your knowledge on K-LASER Class IV certification with these flashcards. Covering key concepts such as the definition of LASER and its mechanisms, this quiz will help you master essential terms and information related to laser technology.

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