scholarly journals In vitrofragmentation efficiency of holmium: yttrium-aluminum-garnet (YAG) laser lithotripsy - a comprehensive study encompassing different frequencies, pulse energies, total power levels and laser fibre diameters

2014 ◽  
Vol 114 (2) ◽  
pp. 261-267 ◽  
Author(s):  
Peter Kronenberg ◽  
Olivier Traxer
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Laser Lithotripsy ◽  
Total Power ◽  
Yag Laser ◽  
Yttrium Aluminum ◽  
Pulse Energies ◽  
Laser Fibre ◽  
Comprehensive Study

scholarly journals Q-Switched Neodymium-Doped Yttrium Aluminum Garnet Laser Therapy for Pigmented Skin Lesions: Efficacy and Safety

2013 ◽  
Vol 10 (2) ◽  
pp. 46-50 ◽  
Author(s):  
D Karn ◽  
S KC ◽  
A Amatya ◽  
EA Razouria ◽  
M Timalsina ◽  
...  
Keyword(s):  
Recurrence Rate ◽  
Safety Profile ◽  
Yttrium Aluminum Garnet ◽  
Skin Lesions ◽  
University Hospital ◽  
Efficacy And Safety ◽  
Yag Laser ◽  
Pigmentary Disorders ◽  
Yttrium Aluminum ◽  
Pigmented Skin Lesions

Background Nepalese population with Fitzpatrick skin types III-V has high prevalence of pigmentary disorders and it is a growing cosmetic concern. Q-Switched Neodymium- Doped Yttrium Aluminum Garnet (QS Nd-YAG) laser is an efficacious tool in the treatment of pigment disorders. Objective To highlight the efficacy and safety profile of various pigment disorders. Methods A prospective study done in Dhulikhel Hospital, Kathmandu University Hospital from January 2009 to January 2011. Patients undergoing laser for pigmented skin lesions were followed for response and safety profile. We included total 270 patients in the study with various disorders especially nevus, tattoos and melasma. Settings were repeated at 3-4 weeks interval and response was evaluated on clinical basis. Efficacy was then evaluated according to various parameters. Results For nevus, total 840 treatment sessions had been performed with an average of 6.88 sessions (range 3-11). Nd: YAG laser was very efficacious in removal of blue and black colored tattoos with an average of 7.9 and 9.5 sessions respectively. However, red mixed with blue and or green tattoos were relatively resistant to treatment and required average 10.33 treatment sessions. Melasma and freckles both responded to the therapy but recurrence rate was high. Conclusion Our results indicate that QS Nd: YAG laser is an effective modality for pigment disorders among Nepalese population. Nevus and melasma respond well but recurrence rate of melasma is high. Blue tattoos respond well while mixed colored tattoos are quite resistant to Nd: YAG laser alone. Transient pain and temporary hyperpigmentation are common side effects. Kathmandu University Medical Journal | Vol.10 | No. 2 | Issue 38 | Apr – June 2012 | Page 46-50 DOI: http://dx.doi.org/10.3126/kumj.v10i2.7343

scholarly journals Percutaneous yttrium aluminum garnet-laser lithotripsy of intrahepatic stones and casts after liver transplantation

2015 ◽  
Vol 21 (6) ◽  
pp. 831-837 ◽  
Author(s):  
Nis Hallundbaek Schlesinger ◽  
Peter Svenningsen ◽  
Susanne Frevert ◽  
André Wettergren ◽  
Jens Hillingsø
Keyword(s):  
Liver Transplantation ◽  
Yttrium Aluminum Garnet ◽  
Laser Lithotripsy ◽  
Yttrium Aluminum Garnet Laser ◽  
Intrahepatic Stones ◽  
Yttrium Aluminum

scholarly journals Encrusted Ureteral Stent Retrieval Using Flexible Ureteroscopy with a Ho: YAG Laser

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Takashi Kawahara ◽  
Hiroki Ito ◽  
Hideyuki Terao ◽  
Takehiko Ogawa ◽  
Hiroji Uemura ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Renal Stones ◽  
Ureteral Stent ◽  
Flexible Ureteroscopy ◽  
Ureteral Stents ◽  
Yag Laser ◽  
Stent Retrieval ◽  
Yttrium Aluminum

A 23-year-old female had bilateral ureteral stents placed due to bilateral renal stones and hydronephrosis. The bilateral ureteral stents were changed every 3 months. A kidney ureter bladder (KUB) film showed left encrustation along the ureteral stent thus necessitating removal; however, the ureteral stent could not be removed cystoscopically. The ureteral stent was, therefore, extracted using flexible ureteroscopy (URS) with a holmium (Ho): yttrium aluminum garnet (YAG) laser.

scholarly journals Feasibility and long-term safety of Ho:YAG laser lithotripsy in broncholithiasis patients

2020 ◽  
Author(s):  
Yuan Cheng ◽  
Guangfa Wang ◽  
Wei Zhang ◽  
Hong Zhang ◽  
Xi Wang
Keyword(s):  
Pulse Energy ◽  
Yttrium Aluminum Garnet ◽  
Pulse Frequency ◽  
Laser Lithotripsy ◽  
Rigid Bronchoscopy ◽  
Ho:Yag Laser ◽  
Yttrium Aluminum ◽  
Long Term Follow Up

Abstract Background: Treatment of broncholithiasis is complex, especially in the case of a large or transbronchial broncholith. Holmium-yttrium aluminum garnet (Ho:YAG) laser lithotripsy may be a useful treatment in broncholithiasis; however, as it is not yet common practice, the optimal parameters are unknown. Methods: We performed a single-center retrospective analysis of the clinical data of 13 broncholithiasis patients who underwent Ho:YAG laser lithotripsy from May 2012 to October 2018. Results: For the 13 patients (2 males and 11 females), Ho:YAG laser lithotripsy was performed 17 times, in total. All procedures were performed under general anesthesia with rigid bronchoscopy. We initially set the Ho:YAG laser to a pulse frequency of 5 Hz and a pulse energy of 0.8 J, gradually increasing these as required. The pulse frequency range we employed was 5-15 Hz, and the pulse energy range was 0.8-1.6 J. All broncholiths were successfully extracted after lithotripsy, and all symptoms improved. Hemoptysis, bronchial esophageal fistula, and pneumonia were the most common complications; however, there were no long-term complications. Conclusions: Ho:YAG laser lithotripsy is an effective and safe treatment for broncholithiasis, over a long-term follow up.

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