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1.
L P Tate 《Veterinary Clinics of North America: Equine Practice》1991,7(1):165-195
The advantages and disadvantages of various surgical lasers are discussed. Included are aspects of laser safety, anesthesia and analgesia considerations for laser surgery, and diagnostic considerations. Horses with lesions such as ethmoid hematomas, nasal polyps, and lymphoid masses are ideal candidates for laser treatment. Other conditions that are suitably treated with lasers, such as dorsal displacement of the soft palate and entrapment of the epiglottis, are described. 相似文献
2.
Laser in dermatology 总被引：1，自引：0，他引：1
Boord M 《Clinical Techniques in Small Animal Practice》2006,21(3):145-149
The laser is a tool that will augment the surgical techniques available to the veterinarian. When using the laser compared with traditional surgery there are multiple procedures that can be performed with much greater ease, and some procedures that previously could not be performed. Specialty and academic practices have used lasers for photodynamic therapy, lithotripsy of urinary calculi, and percutaneous disk ablation. This article will focus on the lasers use in dermatology. It is essential that the surgeon learn the basics of laser physics, how the laser interacts with tissue and the safety issues one needs to consider during its use. On deciding to use the laser the surgical techniques chosen should always be based on considering the advantages and disadvantages the laser has to offer. The use of biomedical lasers is a "cutting edge" technique now available to our veterinary field. 相似文献
3.
Charly Kronberger 《Veterinary Clinics of North America: Small Animal Practice》2002,32(3):723-35, viii
The use of surgical lasers in veterinary practice has grown significantly since 1996. Many veterinarians have studied and implemented the basic physics and tissue didactics required to successfully incorporate a surgical laser program into their practice. The support role of the veterinary technician is crucial to ensuring an efficient, safe, and successful outcome of any surgical laser procedure. The technician's role may include practice management duties, client communication, and laser safety officer duties. Although there are a variety of lasers, the most common types used in veterinary practice are carbon dioxide (CO2) and diode. This article presents an overview of the veterinary technician's role as a key support person in ensuring a safe and positive outcome in the implementation of CO2 and diode lasers in a veterinary practice. 相似文献
4.
Margi A Gilmour 《Veterinary Clinics of North America: Small Animal Practice》2002,32(3):649-672
Laser technology continues to progress with the addition of new lasers, new delivery systems, and new applications. The introduction of lasers to veterinary ophthalmology has radically changed the level of care that we can provide to our patients. The development of the diode laser has particularly had an impact on veterinary ophthalmology. The diode's affordability, portability, and broad applications for veterinary patients have allowed laser surgery to become a routine part of veterinary ophthalmology practice. Educating the public and veterinary community in available laser techniques will generate improved ophthalmic care and provide more data on which to build future applications. 相似文献
5.
Jan Bellows 《Veterinary Clinics of North America: Small Animal Practice》2002,32(3):673-92, viii
Lasers have been used in human dentistry since the 1960's. Lasers can provide a veterinary dentist access to difficult to reach areas with a relatively bloodless surgical field. Due to vaporization of nerve endings, human patients undergoing laser dental treatment reveal less pain compared to scalpel driven procedures. Dental applications for the commonly used lasers are discussed, as are special safety precautions. Many dental procedures enhanced by a carbon dioxide laser are covered. Future applications for the laser in veterinary dentistry are also discussed. 相似文献
6.
《Clinical Techniques in Equine Practice》2002,1(1):3-8
Laser is the acronym for light amplification by stimulated emission of radiation; the first laser beam was generated in 1960 and initially used for medical application in 1963. Today's modern surgical laser units produce an intensely focused light beam of uniform wavelength that interacts with a variety of biological cell types to vaporize, cut, coagulate, or shrink tissues. The resulting effect depends on the optical properties of the tissue and the wavelength, power output, spot size, and duration of laser beam application. Different lasers are suited to specific surgical tasks relative to their beam wavelength, power output, mode of operation (continuous, pulsed or superpulsed), and application (contact or noncontact) and instrumentation. The documented advantages of laser surgery over conventional surgical procedures are improved hemostasis, the ability to ablate or vaporize tissue, endoscopic access to body cavities, improved postoperative comfort, and shorter hospitalization and recovery times. By the mid-1980s, laser use in equine surgery was reported; the carbon dioxide and neodymium:yttrium-aluminum-garnet were the first models integrated into practice. The primary application of laser technology in equine surgery was for the correction of various upper-respiratory tract abnormalities and still remains the most prevalent use through endoscopy. Today, surgical lasers are used for the treatment of problems in the urinary, reproductive, and musculoskeletal systems, in addition to the skin and the eye. When we combine advances in laser technology and the practice of equine surgery, the result is clinicians better equipped to treat and manage the more difficult cases. 相似文献
7.
Joanna Tunikowska Przemysław Prządka Zdzisław Kiełbowicz 《Reproduction in domestic animals》2020,55(Z2):32-37
Light-based technologies are applied in various fields of medicine: for example optical diagnostics, light-activated therapy and surgery. Although light-based surgical procedures had hardly been a novelty, the revolutionizing moment for surgery came with the first use of light to cut tissue. Nowadays, surgical lasers are routinely used across numerous medical specialties, including gynaecology and urology. They are a part of the surgical treatment of benign prostatic hyperplasia, prostate carcinoma, penis carcinoma, genital skin lesions and orchidectomy. While in human urology lasers continue to establish their position as one of the standard surgical tools, veterinary patients are rarely treated with what here is still considered a technical innovation. However, through research on laser treatment of the prostate hyperplasia conducted on a canine model, veterinary medicine has gained a massive portion of data. It may prove beneficial for our clinical patients. In this review, we introduce the very principles of laser surgery as well as its current and future applications in oncologic surgery of the canine prostate gland and the male reproductive system. 相似文献
8.
Lasers have become a popular tool in veterinary practice, particularly the carbon dioxide (CO2) laser. In humans, the CO2 laser is used most commonly in oral and maxillofacial soft tissue surgery due to its favorable interactions with oral soft tissues. Other types of lasers are better suited for use on hard tissues such as enamel and dentin. This article reviews the history of laser use, physics of laser-tissue interaction, delivery systems, and laser types used in dentistry and oral surgery. This is followed by a case report describing the use of CO2 laser as an adjunctive treatment for therapy of refractory caudal stomatitis in a cat. 相似文献
9.
Laser safety. 总被引：4，自引：0，他引：4
Thomas R Fry 《Veterinary Clinics of North America: Small Animal Practice》2002,32(3):535-547
Laser safety is a critical component in any laser surgery program. When used improperly, lasers have the potential to cause severe skin burns, induce corneal opacity and cataracts, damage the retina leading to blindness, and cause chronic respiratory diseases. For these reasons, each laser user is obligated to establish and comply with a laser safety program as outlined by ANSI. 相似文献
10.
Timothy L Holt Fred A Mann 《Veterinary Clinics of North America: Small Animal Practice》2002,32(3):569-99, vi
Despite increasing numbers of veterinarians incorporating lasers into their clinical practices, little information has been published about laser clinical applications in soft tissue surgery. This article reviews soft tissue interaction, describes laser equipment and accessories commonly marketed to veterinarians, and discusses clinical applications of the carbon dioxide laser in a systems-based approach. A table of recommended laser tips and settings based on the authors' experiences using a carbon dioxide laser (AccuVet Novapulse LX-20SP, Bothell, WA) is provided. 相似文献
11.
There are clearly a number of applications for which flexible endoscopic laser surgery has become the state of the art in equine surgery, and the Nd:YAG laser seems to be the most versatile instrument for this type of surgery. Nevertheless, it is critical to understand the advantages and disadvantages of each laser technique. For example, the Nd:YAG laser used in a noncontact fashion seems to be superior when ablation of tissue is required such as treatment of upper airway masses. Conversely, contact Nd:YAG laser techniques have proven themselves to be superior when more precise cutting is advantageous such as treatment of epiglottic entrapment. Ultimately, it seems that a range of lasers is necessary to ensure selection of the most appropriate technique, adding significantly to the expense of equipment but improving the outcome for a range of equine diseases. 相似文献
12.
Lasers and laser-tissue interaction. 总被引：2，自引：0，他引：2
George M Peavy 《Veterinary Clinics of North America: Small Animal Practice》2002,32(3):517-34, v-vi
Light produced by a laser differs from incandescent light in that it is monochromatic, coherent, and intense; and it is these properties that allow lasers to be used as such unique tools in biomedical research and patient care. The effect of a laser beam on tissue is dependent on the optical and mechanical properties of the tissue, and the wavelength, power parameters, and time domains of the laser exposure. Understanding these principles is not only important for the selection of an appropriate laser system for a specific application, but also is essential for that application to be successful. 相似文献
13.
Gilmour MA 《Clinical Techniques in Small Animal Practice》2003,18(3):657-202
The clinical use of the carbon dioxide (CO2) laser and diode laser is increasing in veterinary medicine. New applications for their use are being explored, including ophthalmic applications. The use of lasers for small-animal corneal disease is fairly limited due to several factors. The ideal laser for corneal use is the excimer laser due to its extremely precise photoablative capability. However, the excimer laser is unlikely ever to become practical for veterinary use. The frequency of corneal disease in small animals in which tissue ablation is indicated is relatively low. And for most of these diseases, routine surgical techniques work as well or better than laser ablation. The CO2 laser can be used on corneal tissue, but must be used very cautiously so as not to ablate too deeply, creating serious scarring or perforation. There are also concerns regarding its effect on corneal nerves, stromal collagen, and corneal endothelium. The CO2 laser can be very effective in ablating limbal tumors with corneal extension. The use of the laser is less invasive, technically less difficult, and faster because of excellent hemostasis. The diode laser, due to its high melanin absorption, can be used effectively to ablate epibulbar melanomas with corneal stromal invasion. 相似文献
14.
《Clinical Techniques in Equine Practice》2002,1(1):22-27
The neodymium:yttrium aluminum garnet laser (Nd:YAG) produces an intense amount of irradiation when set at 100 W of total power output. The irradiation is easily transmitted through small quartz glass fibers that can be passed through the biopsy channel of most endoscopes. Noncontact or free fiber applications of lasers employ high-power outputs, whereas contact applications of laser energy are restricted to low-wattage output of the laser. Horses periodically develop a benign lesion referred to as a progressive ethmoid hematoma (PEH) that may fill the paranasal sinuses and can break through the ventral floor into the nasal passage. When this lesion originates from the nasal ethmoid turbinates, it can be removed by transendoscopic Nd:YAG laser photoablation. In the sinus form of PEH, the lesion first requires surgical removal, after which remnants are transendoscopically irradiated using laser technique. At NCSU College of Veterinary Medicine between 1986 and 1996, 41 horses received standing noncontact Nd:YAG laser treatment for PEH. In 70% of the cases, the treatment was successful in removing the entire lesion and/or eliminating any postsurgical remains or recurrences. 相似文献
15.
Rizzo LB Ritchey JW Higbee RG Bartels KE Lucroy MD 《Journal of the American Veterinary Medical Association》2004,225(10):1562-1566
OBJECTIVE: To compare histologic artifacts caused by carbon dioxide (CO2) or 810-nm diode surgical lasers used to obtain small biopsy specimens of skin from healthy dogs. DESIGN: Prospective study. ANIMALS: 4 dogs. PROCEDURE: 21 skin biopsy specimens were collected from each dog. Three biopsy specimens were obtained with a CO2 or an 810-nm diode laser at 3 operating settings each, and 3 biopsy specimens were obtained with a 6-mm biopsy punch instrument (controls). After processing, biopsy specimens were examined for artifacts related to laser-tissue interactions. Microscopically visible char was measured from the lateral edge of each specimen obtained with a laser. RESULTS: There were no significant differences among mean char distances in biopsy specimens obtained with the CO2 laser at various settings. Mean char distance was significantly greater in all skin biopsy specimens obtained with the diode laser, compared with those obtained with the CO2 laser. Mean char distance was significantly greater in biopsy specimens obtained with the 810-nm diode laser at high power, compared with biopsy specimens obtained with the 810-nm diode laser at low power. CONCLUSIONS AND CLINICAL RELEVANCE: Results indicated that the CO2 laser caused less thermal injury at margins of skin biopsy specimens; therefore, if a surgical laser is used for removal of cutaneous masses or to obtain skin biopsy specimens, use of the CO2 laser is recommended. Veterinarians performing a biopsy by using a surgical laser should be aware that laser-induced artifacts may render small biopsy specimens useless for providing accurate histologic diagnosis. 相似文献
16.
REASONS FOR PERFORMING STUDY: No studies have been published on effects of treatment with a defocused beam carbon dioxide (CO2) laser on equine skin histology. A better understanding of this will help to define how lasers should be used, in order to reduce potential side effects. OBJECTIVE: To describe the acute effects of different doses of defocused CO2 laser, ranging from therapeutic to surgical levels, on equine skin. METHODS: Defocused CO2 laser was administered to the skin in the hamstrings (91 J/cm2), fetlock (137 J/cm2) and loin (450 J/cm2) areas of 13 Standardbred horses. The acute effects on skin histology were examined 90 min after the end of therapy. RESULTS: Mild changes with focal spongiosis and subepidermal clefts were found after 91 J/cm2 irradiation and more severe changes with diffuse subepidermal clefts after the 137 J/cm2 dose. A homogeneous eosinophilic acellular zone of dermis and destruction of adnexal structures, and significant thinning of the epidermis was observed after the 450 J/cm2 dose. CONCLUSIONS: The present study indicates acute dose-dependent changes in equine skin histology after laser treatment Severe tissue damage was induced using a 450 J/cm2 dose. POTENTIAL RELEVANCE: To reduce the potential side effects of defocused CO2 laser treatment, the laser parameters must be carefully evaluated. Caution should be taken if doses higher than 91 J/cm2 (16 W, 4 min, and 42 cm2) are used in irradiation of equine skin. 相似文献
17.
SA Vallance MA Vidal MB Whitcomb BG Murphy M Spriet LD Galuppo 《American journal of veterinary research》2012,73(9):1435-1444
Objective-To evaluate use of a diode laser to induce tendinopathy in the superficial digital flexor tendon (SDFT) of horses. Animals-4 equine cadavers and 5 adult horses. Procedures-Cadaveric SDFT samples were exposed to a diode laser at various energy settings to determine an appropriate energy for use in in vivo experiments; lesion size was assessed histologically. In vivo experiments involved laser energy induction of lesions in the SDFT (2 preliminary horses [0, 25, 75, and 87.5 J] and 3 study horses [0 and 125 J]) and assessment of lesions. Study duration was 21 days, and lesions were assessed clinically and via ultrasonography, MRI, and histologic evaluation. Results-Lesion induction in cadaveric tissues resulted in a spherical cavitated core with surrounding tissue coagulation. Lesion size had a linear relationship (R(2) = 0.9) with the energy administered. Size of in vivo lesions in preliminary horses indicated that larger lesions were required. In study horses, lesions induced with 125 J were ultrasonographically and histologically larger than were control lesions. At proximal and distal locations, pooled (preliminary and study horses) ultrasonographically assessed lesions were discrete and variable in size (mean ± SEM lesion percentage for control lesions, 8.5 ± 3%; for laser lesions, 12.2 ± 1.7%). Ultrasonography and MRI measurements were associated (R(2) > 0.84) with cross-sectional area measurements. Conclusions and Clinical Relevance-In vivo diode laser-induced lesions did not reflect cadaveric lesions in repeatable size. Further research is required before diode lasers can reliably be used for inducing tendinopathy. 相似文献
18.
Scott E Palmer 《Veterinary Clinics of North America: Equine Practice》2003,19(1):245-263
Lasers have become important tools for the equine surgeon in the treatment of upper respiratory tract disease in the horse. Multiple wavelengths and delivery systems are available. Indications for the use of lasers in the upper respiratory tract primarily include minimally invasive procedures not possible with conventional surgical instrumentation. New applications for the use of lasers to treat upper respiratory disease are likely to evolve with the development and introduction of new wavelengths and delivery systems. 相似文献
19.
《Clinical Techniques in Equine Practice》2002,1(1):39-42
Palmar digital neurectomy is typically performed as a treatment for palmar foot pain that is unresponsive to medical treatment and therapeutic shoeing. Although it is useful for the elimination of pain related to navicular disease or wing fractures of the distal phalanx, a number of potential complications can occur after this procedure, including painful neuroma formation, persistence of skin sensation, reinnervation, and rupture of the deep digital flexor tendon. Over the years, surgical techniques have been developed to minimize complications associated with digital neurectomy, including sharp dissection (the guillotine method), epineural capping, and cryosurgical treatment of the nerve, using a double freeze-thaw cycle. Alternatively, lasers may be used to divide the palmar digital nerve with coagulation of the nerve endings. The thermal effects of the laser theoretically help to minimize the potential for painful neuroma formation and reinnervation by sealing the cut surface of the nerve endings, preventing adhesion formation with surrounding soft tissues, and delaying the reanastomosis of the proximal and distal nerve segments. 相似文献
20.
Future use of lasers in medicine depends on the active participation of veterinarians in the inception and development of new devices that meet the needs of the entire medical profession. The sensible clinical approach that must be taken every day in the practice of veterinary medicine equips the veterinarian with a unique ability to understand the practical applications of biomedical lasers. Veterinary medicine can and should be in the forefront during these exciting times, adding an essential dimension to development of this twenty-first century technology. 相似文献