Two experiments examined time/concentration trading for the detection of carbon dioxide, an irritant with little or no odor. Experiment 1 employed the nasal lateralization method: subjects attempted to determine which nostril received carbon dioxide and which received pure air when presented simultaneously. Experiment 2 employed a temporal, two-alternative, forced-choice, detection paradigm wit...

BACKGROUND Keloids are abnormal wound responses characterised by excessive deposition of collagen and glycoprotein. They are both aesthetically and symptomatically distressing for most of the patients. There are reports of keloid management with pulsed dye laser (PDL), fractional carbon dioxide (CO2) laser and neodymium-doped yttrium aluminium garnet (Nd:YAG) laser individually and also in comb...

OBJECTIVES Compare the use of carbon dioxide contrast medium with iodine contrast medium for the endovascular treatment of ilio-femoral occlusive disease in patients without contraindications to iodine. MATERIALS AND METHODS From August 2012 to August 2014, 21 consecutive patients with ilio-femoral occlusive disease who were eligible for endovascular treatment and lacked contraindications to ...

Tim LASER (Light Amplification by Stimulated Emission of Radiation), was first introduced into medicine about a decade ago, and within this relatively short time, has added a new dimension to medical science. A variety of substances (solids and gases) can stimulate laser emissions. Lasers vary in wavelength and physical properties. These variations make them useful for a variety of clinical and...

Ablative fractional carbon dioxide (CO2) lasers have been widely used for several types of cosmetic dermatosis. A number of previous studies have evaluated this technique in animals or human beings by observing morphologic changes using an invasive modality such as skin biopsy. In this study, we assessed in vivo skin changes after CO2 ablative fractional laser treatment in a mouse model using n...

BACKGROUND There are various therapeutic options for the treatment of pyogenic granuloma (PyG), but the results are frequently unsatisfactory, especially at difficult sites and with extensive lesions. OBJECTIVE To evaluate the success of treatment of PyG using the 1,064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser and to compare it with state-of-the-art treatment methods. MATER...

OBJECTIVE To assess the advantages of powered instrumentation vs the carbon dioxide laser in treating patients with juvenile-onset recurrent respiratory papillomatosis. DESIGN A retrospective study. SETTING Tertiary care children's hospital. PATIENTS Patients operated on for juvenile-onset recurrent respiratory papillomatosis between January 1, 1999, and December 31, 2000. Papillomas were...