Abstract:
:In this study, we examined short-term strength and histology of experimental argon and CO2 laser-welded and control-sutured enterotomies in a rabbit model. Longitudinal 1.0-cm enterotomies were closed with the argon laser at 0.5 (n = 10) or 1.0 (n = 10) W power and a spot diameter of 2.8 mm resulting in energy fluences of 230 and 450 J/cm2, respectively. Similar enterotomies were closed using the CO2 laser at 0.5 (n = 10) or 1.0 (n = 10) W power and a spot diameter of 1.2 mm, resulting in energy fluences of 1,360 and 2,730 J/cm2. In all closures, continuous wave laser was delivered for 30 seconds. Using a pressure-monitored infusion system with normal saline, the pressure required to burst each weld as well as sutured controls (n = 10) was recorded approximately 1 minute following fusion. Mean bursting pressures for the argon laser at 0.5 W and 1.0 W were 34.1 +/- 19.4 mm Hg (mean +/- SD) and 17.3 +/- 8.3 mm Hg, respectively, and for the CO2 laser were 23.5 +/- 12.0 mm Hg and 31.8 +/- 15.6 mm Hg, respectively. Sutured controls leaked at 45.2 +/- 12.0 mm Hg. With the exception of argon-laser welds at an energy fluence of 450 J/cm2, which were less than sutured repairs, the bursting pressures for welded closures were not significantly different from the sutured controls (Student's t distribution, P less than .05). Histologic examination of both types of welds demonstrated a fibrin and red blood cell coagulum bridging the anastomosis, with some evidence of mild thermal injury at the mucosa.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Lasers Surg Medjournal_title
Lasers in surgery and medicineauthors
Vlasak JW,Kopchok GE,White RAdoi
10.1002/lsm.1900080513subject
Has Abstractpub_date
1988-01-01 00:00:00pages
527-32issue
5eissn
0196-8092issn
1096-9101journal_volume
8pub_type
杂志文章abstract:BACKGROUND AND OBJECTIVE:The Holmium: YAG (Ho: YAG) laser has been used for the ablation of prolapsed discs but alternative techniques are available, and this application remains controversial. It also has potential for the decompression of nerve roots within narrowed foraminae with the technique of endoscopic laser fo...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1083
更新日期:2001-01-01 00:00:00
abstract:INTRODUCTION:Clinical laser settings have traditionally been calibrated on abdominal skin to predict and anticipate patterns of injuries in facial skin. This experimental approach has limitations as facial skin and abdominal skin have differences that may influence the depth of laser injury. OBJECTIVE:The primary obje...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.21015
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Optical coherence tomography (OCT) provides ultrahigh-resolution imaging of tissues within a depth of a few millimeters, whereas ultrasonography provides good imaging further below the surface. We aimed to develop a minimally invasive rabbit model of VX2 laryngeal cancer, suitable for these two...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22409
更新日期:2015-11-01 00:00:00
abstract::It has been postulated that low energy (soft) lasers can enhance wound healing. Considering the importance of cell locomotion in the wound healing process, we have studied the effects of a helium/neon laser upon the locomotory behaviour of a population of fibroblasts migrating within a three-dimensional hydrated colla...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900120617
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Autofluorescence (AF) emission is an intrinsic parameter that can provide real-time information on morpho-functional properties of biological tissue, being strictly related with their biochemical composition and structural organization. The diagnostic potentials of AF-based techniques have been...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20923
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The aim of this study was to examine the influence of implant bed preparation, using either Er:YAG laser ablation, piezoelectric surgery or drill osteotomy, on osseointegration of titanium dental implants after 4, 6, and 8 weeks. MATERIAL AND METHODS:A total of 108 implants (Camlog) were plac...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20944
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The pulsed holmium laser is a promising tool for tissue ablation but possesses some limitations. For example, it is capable of producing significant mechanical damage in certain tissues in the form of fissures and fractures. Because longer pulse durations should reduce mechanical damage, this s...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/(SICI)1096-9101(1996)19:1<97::AID-LSM11>3.
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Most women with early stage breast cancer have the option of breast conserving therapy, which involves a partial mastectomy for removal of the primary tumor, usually followed by radiotherapy. The presence of tumor at or near the margin is strongly correlated with the risk of local tumor recurre...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20865
更新日期:2010-01-01 00:00:00
abstract::This study examined both the effect of variations in optical fiber tip and in light wavelength on laser-induced hyperthermia in rat brain. Normal rat brains were exposed to argon laser light (454-514.5 nm) delivered through an intracerebral end-emitting (bare-tipped) or a diffusion-emitting (sapphire-tipped) optical f...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900070413
更新日期:1987-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:To demonstrate that high color fidelity light-emitting diode (LED) sources are preferred by dermatologists for the evaluation of patients during standard-of-care, outpatient visits when compared to low color fidelity LED sources similar to fluorescent lighting. STUDY DESIGN/MATERIALS AND METH...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.23352
更新日期:2020-11-08 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Photodynamic therapy (PDT) may be a less invasive treatment for lung cancer. Our newly developed surface layer-preserving PDT (SPPDT) technique enables us to irradiate deep tumor while preserving the overlying tissue. The aim of this basic study was to verify that the SPPDT technique might be ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22046
更新日期:2012-08-01 00:00:00
abstract::Since the first use of lasers in ophthalmology in the early 1960s, applications for the medical laser have been found in many medical specialties. Despite their increasing usefulness, lasers have been reported to induce injuries. Few studies have tried to quantify the number of injuries caused by the clinical use of l...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900070603
更新日期:1987-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:In coupling laser with micromanipulator through fiberoptics, the resulting diameter of the spot is limited by the laws of geometrical optics, because of the high numerical aperture (N.A.) of fiberoptic radiation. A new method for the reduction of spot size diameter is suggested. STUDY DESIGN/M...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900170110
更新日期:1995-01-01 00:00:00
abstract::This study was designed to determine the optimal laser power (watts) for maximal strength of argon laser vascular fusions by measuring bursting pressures of repairs. Longitudinal incisions (n = 105) measuring either 2.5 or 5 mm in length were performed in canine femoral, carotid, and jugular veins and arteries and wer...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900090509
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Phototherapy plus dynamic exercise can enhance physical performance and improve health. The aim of our study was to evaluate the effect of low-level laser therapy (LLLT) associated with high intensity resistance training (HIT) on cardiac autonomic and muscle metabolic responses in rats. STUDY ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22298
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Acne scarring is a common complication of acne but no effective single treatment modality has been developed. To compare the efficacy of 1,550 nm Er:Glass fractional laser and chemical reconstruction of skin scar (CROSS) method in the treatment of acne scars. STUDY DESIGN/MATERIALS AND METHODS...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
doi:10.1002/lsm.20796
更新日期:2009-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Current fat-graft animal models require weeks, to months, for results. The purpose of this study was to develop a model for the rapid identification of adipocyte protectants, using apoptosis-specific fluorescence. The goal of our model was to predict long-term fat graft survival within a 10-da...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20874
更新日期:2009-12-01 00:00:00
abstract:INTRODUCTION:Patient demand for non-surgical, non-invasive, and no-downtime wrinkle reduction treatment procedures has grown dramatically over the past decade as new treatments and technologies have been introduced. This study was performed in order to evaluate the safety and efficacy of the TriPollar radiofrequency (R...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22044
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:It is established that both pulsed Nd:YAG (1,064 nm) and continuous diode (810 nm) dental lasers kill pathogenic bacteria (laser antisepsis), but a quantitative method for determining clinical dosimetry does not exist. The purpose of this study was to develop a method to quantify the efficacy ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20086
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:This study was conducted to clarify the morphologic characteristics and subsequent repair process of coagulation necrosis produced by pulsed CO(2) laser irradiation with relatively low fluence, and thereby to evaluate the clinical efficacy of this irradiation mode. STUDY DESIGN/MATERIALS AND ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20712
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:To determine the true efficacy of the 308-nm excimer laser for the treatment of vitiligo, while taking into account confounding factors such as anatomic site of treatment, age, sex, skin type, MED, and duration of evolution of the vitiligo. STUDY DESIGN/MATERIALS AND METHODS:Thirty-five patie...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
doi:10.1002/lsm.20057
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Helium plasma skin regeneration (PSR) is a novel skin rejuvenation technology with significant differences compared with nitrogen PSR technology but that may exert similar skin tissue effects. Study objectives included a comparison of acute and chronic skin tissue changes among the two plasmas...
journal_title:Lasers in surgery and medicine
pub_type:
doi:10.1002/lsm.23167
更新日期:2020-01-01 00:00:00
abstract::A low-energy Nd:YAG laser was used to irradiate extracted human teeth coated with a black energy-absorbent laser initiator in a study to determine the extent of the morphologic changes produced in the enamel surface. The laser initiator was applied to a cleaned enamel surface and irradiated at an energy output of 30 m...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900100510
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Recently developed laser lipolysis systems have been disappointing because they require more time to remove the same amount of fat than other liposuction methods. A new Nd:YAG laser has been introduced that uses the 1,444 nm wavelength, better absorbed by fat. STUDY DESIGN/MATERIALS AND METHO...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20786
更新日期:2009-12-01 00:00:00
abstract::For laser angioplasty probes, the thermal properties of the probes will primarily determine their mechanism of action. We examined the absorption, temperature increase, and probe degradation of transparent contact probes (hemispherical contact probe and ball-shaped fibers) and metal laser probes coupled to a continuou...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900110304
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:In order to improve selectivity of photodynamic therapy (PDT) to choroidal neovascularization (CNV) associated with age-related macular degeneration, a laser scanning technique was applied to perform focal laser irradiation to the retina, and the occlusion effects of a new device to the chorio...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.10056
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:In recent years, selective photothermolysis (PT) based on broadband light and assisted by skin vacuum (Photopneumatic Technology or PPx, by Aesthera) was introduced into the aesthetic market for epilation (hair removal) procedures. The present study aims to: (a) determine the overall effect of ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20743
更新日期:2009-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Chronic sun-exposure results in five main changes to exposed skin: telangiectasia, hyperpigmentation, rhytides, enlarged pores, and sagging skin. Various laser and non-laser modalities have been used to improve sun-damaged skin. The pulsed-dye laser (PDL) has an unparalleled safety record and ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20463
更新日期:2007-02-01 00:00:00
abstract:BACKGROUND:For the past 15 years we have used photodynamic therapy (PDT) to treat endobronchial tumors. Unfortunately patients who have non-primary lung cancer metastatic to bronchi and who have failed other treatment regimens may not be offered endobronchial tumor management. Thirteen patients with endobronchial tumor...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/(sici)1096-9101(1999)24:3<194::aid-lsm4>3.
更新日期:1999-01-01 00:00:00
abstract::Previous reports of effects of CO2 laser energy on human fibrocartilage suggest thermal injury extends to a depth of approximately 70 microns from the target surface with power settings of 35 W and exposure times of 0.5 seconds. The present study was undertaken to look for more subtle evidence of thermal alteration of...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900070209
更新日期:1987-01-01 00:00:00