A brief history of kilowatt-class diode-laser bars

Abstract Background Keloids are the result of abnormal wound healing and often are subject to infections and recurrent inflammation. We present a study conducted with a 1470 nm diode laser using an intralesional optical fiber device for the treatment of inflamed keloid scars. We evaluate its efficacy as a novel alternative method to decrease keloid infection and inflammation. Methods The patients who underwent 1470 nm laser treatment from February 2016 to February 2018 at the plastic and reconstructive surgery department of the Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University with keloid accompanying serious local infection and fester were included. Patients took curative effect evaluation before and 1 year after the treatment. The test items included infection frequency in each year; pain, by visual analogue scale (VAS); itch, using VAS; quality of life (QOL), using QOL scale; and blood supply, using PeriCam PSI. Results A total of 19 patients (mean age 35.21 years, range 11–66) with history of inflamed keloids with episodes of infection or abscess were enrolled. Patients underwent to a 1470 nm laser therapy for average of 1.16 times. After treatment, infection frequency and blood supply in keloids were reduced (p < 0.001). Pain, itching, and QOL were improved (p < 0.001). Conclusion The present study shows that 1470 nm fiber laser treatment could improve inflamed keloids fairly well by decreasing inflammation, and a relative stabilization of collagen composition. Therefore, it is an effective minimally invasive scar therapy, but further studies are essential to confirm the present results.

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Diode laser-assisted uvulopalatoplasty using palisade technique

New Medicine ◽

10.25121/newmed.2018.22.2.46 ◽

2018 ◽

Vol 22 (2) ◽

Author(s):

Michał Michalik ◽

Adrianna Podbielska-Kubera ◽

Agnieszka Dmowska-Koroblewska

Keyword(s):

Diode Laser ◽

Muscle Tone ◽

Pulse Length ◽

Healing Time ◽

Upper Respiratory Tract ◽

Minimal Invasiveness ◽

3D Ct Scan ◽

History Of ◽

Turbulent Airflow ◽

Upper Respiratory

Introduction. The patency of the lower part of the upper respiratory tract depends on the muscle tone of pharynx, soft palate and tongue muscles. The consequence of the lowered tone of these muscles is recurrent total or partial narrowing of the airways. In this case, the turbulent airflow causes soft tissue vibration, which is heard as snoring. Material and Methods. The study included 34 patients: 27 men and 7 women. Carbon dioxide diode laser-assisted uvulopalatoplasty was employed. The diode laser with a wavelength of 810 mm, power of 5 W, and pulse length of 4 seconds was used. Before the procedure, all the patients underwent laryngological assessment. Medical history of the patients was also collected. In addition, the patients completed 2 questionnaires: a sleep disorder screening questionnaire and Ephworth Sleepiness Scale. Moreover, a 3D CT scan and acoustic rhinometry were performed. All the tests were repeated 3 months after the procedure. Results. The procedure was performed in 34 patients. Complete clinical response was observed in 21 cases, and a partial response was seen in 13 cases. There were no patients in the study group who had not experienced at least a partial improvement of symptoms. None of the patients reported any complications. Conclusions. Good clinical outcome was obtained in all the patients after obtaining palatal stiffening, which contributed to the resolution of symptoms. The advantages of diode laser-assisted uvulopalatoplasty using palisade technique include the safety of the procedure, minimal invasiveness, short healing time, and a low risk of complications. The procedure is performed on an out-patient basis under local anesthesia.

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Retinal and Choroidal Thickness in Children with a History of Retinopathy of Prematurity and Transscleral Diode Laser Treatment

European Journal of Ophthalmology ◽

10.5301/ejo.5000843 ◽

2016 ◽

Vol 27 (2) ◽

pp. 190-195 ◽

Cited By ~ 4

Author(s):

Isıl Sayman Muslubas ◽

Murat Karacorlu ◽

Mumin Hocaoglu ◽

Serra Arf ◽

Hakan Ozdemir

Keyword(s):

Visual Acuity ◽

Diode Laser ◽

Retinopathy Of Prematurity ◽

Choroidal Thickness ◽

History Of ◽

Group 3 ◽

Laser Group ◽

Group 2 ◽

Sd Oct ◽

Group 1

Purpose To evaluate the outcomes of transscleral diode laser photocoagulation in the eyes of children with a history of threshold retinopathy of prematurity (ROP) and compare them with the eyes of children with no or subthreshold ROP and normal term infants by spectral-domain optical coherence tomography (SD-OCT). Methods Three groups of children aged 4 to 10 years were included as follows: 45 patients with regressed ROP who had not received any treatment (group 1), 48 patients with a history of zone 2 threshold ROP who had been treated with transscleral diode laser (group 2), and 56 age-matched healthy full-term children (group 3). Visual acuity, refractive error, and measurement of retinal and choroidal thickness by SD-OCT were compared between groups retrospectively. Results The mean gestational age (GA) and birthweight (BW) were 31 weeks and 1,409 grams in group 1, 28.7 weeks and 1,274.5 grams in group 2, and 38.4 weeks and 3,285 grams in group 3, respectively. There were 6 significant differences in the laser group: GA, BW, macular thickness, foveal depression, spherical equivalent, and visual acuity. In contrast, there were no significant differences among any of the choroidal parameters in all of the groups. Neither macular nor choroidal thickness correlated with visual acuity. Conclusions Although retinal structural changes were observed in patients with a history of ROP, especially in patients treated with laser, no significant difference was found in choroidal thickness between groups. These structural abnormalities may be related to both severity of ROP and laser treatment.

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Comparative Study of Diode Laser versus Intense Pulsed Light (IPL) for the management of Hirsutism in Sulaimani Government

Kurdistan Journal of Applied Research ◽

10.24017/science.2020.ichms2020.5 ◽

2020 ◽

pp. 40-48

Author(s):

Burhan Tahir Saeed

Keyword(s):

Patient Satisfaction ◽

Diode Laser ◽

Primary Outcome ◽

Intense Pulsed Light ◽

P Value ◽

Pulsed Light ◽

Cross Sectional ◽

Dermatology Clinic ◽

The Social ◽

History Of

Hirsutism defined as excessive hairiness, hirsutism can negatively affect individuals, particularly females. Hirsutism has been attributed to the presence of high levels of androgen. There are different procedures to treat hirsutism; however, diode laser and intense pulsed light (IPL) are the most common methods. The present study was carried out in order to compare diode laser and IPL procedures regarding their effectiveness in decreasing hirsutism, patient satisfaction, and pain level. The present cross-sectional prospective study was carried out on 66 patients with hirsutism who regularly visited a dermatology clinic in Sulaimani, Kurdistan Region-Iraq over a period of 8 months from February to October 2020. They were assigned into a diode laser group (n=35) and an IPL group (n=31). Each patient had 8 laser sessions, once every month. Required data were collected through photos taken in every session. The collected data were analyzed through Statistical Package for the Social Sciences (version 22.0). The patients’ mean age was 33.12 years. Over 53% and 35% of them had a family history of first- and second- degree hirsutisms, respectively. Both procedures led to good and very good primary outcomes in 43.9% and 36.4% of the patients, respectively. Patient satisfaction was high in 42.4% of them. Our research has showed that IPL has fewer side effects (p-value<0.001), better primary outcome (p-value<0.001), and better patient’s mood (p-value<0.002). The two procedures led to similar level of patient satisfaction, and they were not significantly different in this regard (p-value=0.3). In terms of hair types, the two procedures were significantly different (p-value<0.001), such that IPL was better for thin hair, while diode laser for thick hair. Both diode laser and IPL procedures were found to be efficient in terms of primary outcome, patient satisfaction, and patient’s mood. However, diode laser is proper for dark-skinned patients with thick hair and IPL for thin hair. Diode laser was found to be better choice for our patients because most clients in the region are dark-skinned with thick hair.

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Evaluation of effectiveness of contact transscleral diode laser cyclocoagulation drainage after neovascular glaucoma surgery

Diabetes Mellitus ◽

10.14341/dm8256 ◽

2017 ◽

Vol 20 (4) ◽

pp. 257-262

Author(s):

Dmitry V. Lipatov ◽

Timofey A. Chistykov ◽

Anatoly G. Kuzmin ◽

Anna A. Tolkacheva

Keyword(s):

Intraocular Pressure ◽

Diode Laser ◽

Postoperative Period ◽

Glaucoma Surgery ◽

Neovascular Glaucoma ◽

Elevated Intraocular Pressure ◽

Patients With Diabetes ◽

History Of ◽

Ophthalmic Branch ◽

Attending Physicians

Relevance. Recently, drainage surgery has gained prevalence in the treatment of neovascular glaucoma. Unfortunately, studies have reported that their effectiveness does not exceed 70%80%. During the postoperative period, the attending physicians major concern is the normalisation of high IOP. Aim.To evaluate the effectiveness of contact transscleral diode laser cyclocoagulation drainage after neovascular glaucoma surgery, which did not lead to the normalisation of elevated intraocular pressure. Materials and methods. This study enrolled eight patients in the ophthalmic branch of the Endocrinology Research Center. All patients previously underwent a drainage operation for uncompensated secondary neovascular glaucoma with a history of diabetic retinopathy. During the postoperative period, because intraocular pressure failed to stabilise, we performed contact transscleral diode laser cyclocoagulation as per the original methodology. Results. After the execution of contact transscleral diode laser cyclocoagulation, intraocular pressure was compensated in all patients, and any complication was noted for up to 6 months. Conclusion. Contact transscleral diode laser cyclocoagulation can be used to normalise abnormal IOP after drainage surgery for the treatment of neovascular glaucoma in patients with diabetes mellitus.

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