Laser transmission through membranes using the Q-switched Nd:YAG laser

Pay, A.D.; Kenealy, John

doi:10.1002/(sici)1096-9101(1999)24:1<48::aid-lsm8>3.0.co;2-c

Cited by 17 publications

(6 citation statements)

References 2 publications

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“…It is therefore important to use as much skin surface cooling as possible. The 2nd Skin hydrogel comprises about 95% water, which provides much better cooling of the skin surface than room air and water has little absorption of the 1064 nM wavelength of the QS laser . While there is some reflection and scattering of the laser from the gel surface, the small loss was not an issue as the fluence and spot size of all laser passes for both Laser + RAP and Laser‐Only passes were optimized before each treatment for whitening production on a test spot, and then both sites were treated by passing the laser through the hydrogel pad as described in the Materials and Methods section.…”

Section: Discussionmentioning

confidence: 99%

Increased Tattoo Fading in a Single Laser Tattoo Removal Session Enabled by a Rapid Acoustic Pulse Device: A Prospective Clinical Trial

et al. 2019

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Background and Objectives: The ability to provide improved tattoo fading using multiple laser passes in a single office laser tattoo removal session is limited. In part, this is due to the loss of laser effectiveness caused by epidermal and dermal vacuole "whitening" generated during the initial laser pass at the tattoo site. The Rapid Acoustic Pulse (RAP) device generates acoustic shock wave pulses that clear epidermal and dermal vacuoles to enable multiple laser passes in a single office laser tattoo removal session. The objectives of this study were to determine if the RAP device, when used as an accessory to the 1064 nm Nd:YAG Q-switched (QS) laser can enable delivery of multiple laser passes in a single office laser tattoo removal session, and therefore result in increased tattoo fading compared to the clinical standard single-pass QS laser tattoo removal session. Study Design/Materials and Methods: The RAP device was evaluated in a single-center (SkinCare Physicians), prospective, IRB approved study. A total of 32 black ink tattoos, from 21 participants, were divided into three zones and treated with either multiple QS laser passes, each followed by 1 minute of RAP device application (Laser + RAP) in zone one and single-pass QS laser treatment (Laser-Only) in zone two, separated by an untreated control zone. The treatment sites were assessed for the number of laser passes and adverse events immediately, 6 weeks, and 12 weeks following the treatment session. Photographs of the treatment sites were assessed for percent fading at 12 weeks posttreatment by three blinded reviewers. Results: When the RAP device was applied as an accessory to the QS laser in a multi-pass laser tattoo removal treatment, an average of 4.2 laser passes were delivered in a single session, with no unexpected or serious RAP device-related adverse events. At the 12week follow-up, tattoos treated with Laser + RAP showed a statistically significant increase in average fading (44.2%) compared with tattoos treated with Laser-Only (24.8%) (P < 0.01). Additionally, a significantly higher overall proportion of tattoos treated with Laser + RAP (37.5%) had a response of >50% fading compared with tattoos treated with QS Laser-Only (9.4%) (P < 0.01) as well as a response of >75% fading from Laser + RAP treatment (21.9%) compared with Laser-Only treatment (3.1%) (P < 0.05). Conclusions:The RAP device, applied as an accessory to the 1064 nm Nd:YAG QS laser, safely enables multiple QS laser treatments in a single office laser tattoo removal session by clearing the whitening caused by the previous QS laser pass. Enabling multiple QS laser passes results in a statistically significant increase in tattoo fading in a single office laser tattoo removal session compared to the clinical standard single-pass QS laser tattoo removal session.

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Section: Discussionmentioning

confidence: 99%

Increased Tattoo Fading in a Single Laser Tattoo Removal Session Enabled by a Rapid Acoustic Pulse Device: A Prospective Clinical Trial

et al. 2019

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“…For example, when aerosol-generating lasers are used, a cover with a transparent membrane such as polyvinyl clingfilm should be encouraged to reduce the splatter of the aerosolized cellular debris (like for tattoo removal with Q-switched lasers), keeping in mind the potential power loss when the laser passes through the membrane. 27 The site at which the procedure is being performed, especially mid and lower face, prohibits the use of a mask by the patient. Since social distancing can also not be maintained, it potentially increases the probability of transmission.…”

Section: Consensus Guidelines For Risk Categorization and Safety Prmentioning

confidence: 99%

“…However, when the high‐risk procedures are performed, certain procedure‐specific steps will be required in addition to the recommendations provided for the moderate risk procedures. For example, when aerosol‐generating lasers are used, a cover with a transparent membrane such as polyvinyl clingfilm should be encouraged to reduce the splatter of the aerosolized cellular debris (like for tattoo removal with Q‐switched lasers), keeping in mind the potential power loss when the laser passes through the membrane 27 . Additionally, one can use plume evacuation systems with filters that remove particulates up to 0.1 μm, known as a ULPA (ultra‐low particulate air) filter 15 …”

Section: Consensus Guidelinesmentioning

confidence: 99%

COVID ‐19 Pandemic: Consensus guidelines for preferred practices in an aesthetic clinic

Kapoor

Chatrath²,

Boxley

et al. 2020

Dermatologic Therapy

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Background: Strict infection control measures in response to the current COVID-19 pandemic are expected to remain for an extended period. In aesthetic clinics, most procedures are provided on one to one basis by the physician or therapist. In such a scenario, guidelines detailing the infection control measures for aesthetic clinics are of particular importance.Methods: An online meeting of an international group of experts in the field of aesthetic medicine, with experience in administration of an aesthetic clinic, was convened. The meeting aimed to provide a set of consensus guidelines to protect clinic staff and patients from SARS-CoV-2 infection. Results:Consensus guidelines for 'preferred practices' were provided for scheduling of patients, patient evaluation and triaging, and for safety precautions about the different procedures. Procedures were categorized into low-risk, moderate risk, and high-risk based on the likelihood of transmission of SARS-CoV-2 virus from the patient to the treating physician or therapist. Conclusions:While not intended to be complete or exhaustive, these guidelines provide sound infection control measures for aesthetic practices. Since guidelines regarding safety measures and use This article is protected by copyright. All rights reserved.of PPEs may vary from country to country, the local guidelines should also be followed to prevent Abstract:Background: Strict infection control measures in response to the current COVID-19 pandemic are expected to remain for an extended period. In aesthetic clinics, most procedures are provided on one to one basis by the physician or therapist. In such a scenario, guidelines detailing the infection control measures for aesthetic clinics are of particular importance.Methods: An online meeting of an international group of experts in the field of aesthetic medicine, with experience in administration of an aesthetic clinic, was convened. The meeting aimed to provide a set of consensus guidelines to protect clinic staff and patients from SARS-CoV-2 infection. Results:Consensus guidelines for 'preferred practices' were provided for scheduling of patients, patient evaluation and triaging, and for safety precautions about the different procedures. Procedures This article is protected by copyright. All rights reserved.were categorized into low-risk, moderate risk, and high-risk based on the likelihood of transmission of SARS-CoV-2 virus from the patient to the treating physician or therapist. Conclusions:While not intended to be complete or exhaustive, these guidelines provide sound infection control measures for aesthetic practices. Since guidelines regarding safety measures and use of PPEs may vary from country to country, the local guidelines should also be followed to prevent COVID-19 infection in aesthetic clinics.

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“…Irradiated wounds had a very high rate (>80%) of wound splinting (healing occurs mainly by reepithelization and granulation tissue formation) in diabetic mice, without recourse to invasive treatments, such as sutures. Tegaderm dressing has been shown to transmit 93% of laser light at a wavelength of 532 nm, 94% at 1064 nm, and 74% at 720-800 nm [69,70].…”

Section: Photobiomodulation For Diabetic Wound Healingmentioning

confidence: 99%

Healing Effects of Photobiomodulation on Diabetic Wounds

Houreld

2019

Applied Sciences

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Diabetic patients frequently develop chronic ulcers of the lower extremities, which are a frequent cause for hospitalization and amputation, placing strain on patients, their families, and healthcare systems. Present therapies remain a challenge, with high recurrence rates. Photobiomodulation (PBM), which is the non-invasive application of light at specific wavelengths, has been shown to speed up healing of chronic wounds, including diabetic foot ulcers (DFUs). PBM produces photophysical and photochemical changes within cells without eliciting thermal damage. It has been shown to promote tissue regeneration and speed up wound repair by reducing inflammation and oxidative stress, accelerating cell migration and proliferation, and promoting extracellular matrix production and release of essential growth factors. The shortage of rigorous, well-designed clinical trials makes it challenging to assess the scientific impact of PBM on DFUs, and lack of understanding of the underlying mechanisms also hinders the conventional use of this therapy. This review gives a glimpse into diabetic wound healing and PBM, and the effects of PBM on diabetic wound healing.

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Laser transmission through membranes using the Q-switched Nd:YAG laser

Cited by 17 publications

References 2 publications

Increased Tattoo Fading in a Single Laser Tattoo Removal Session Enabled by a Rapid Acoustic Pulse Device: A Prospective Clinical Trial

Increased Tattoo Fading in a Single Laser Tattoo Removal Session Enabled by a Rapid Acoustic Pulse Device: A Prospective Clinical Trial

COVID ‐19 Pandemic: Consensus guidelines for preferred practices in an aesthetic clinic

Healing Effects of Photobiomodulation on Diabetic Wounds

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