'PAR' in PAR 20 or PAR 50 is an acronym standing for Parabolic Aluminized Reflector. This name refers to the construction of the PAR bulb. The bulb traditionally features a tungsten filament surrounded by a reflector with an aluminum coating (hence aluminized). The reflector intensifies the beam and makes it more efficient.
Toe necrosis; Toe ischemia; Amputation; Dry gangrene Abstract Toe necrosis may have vast different etiologies. These include ischemia, embolus, and others. (1) The most common etiology is ischemia. It is a reduction in blood supply to a viable tissue that can lead to susceptibility to infection and tissue death. Peripheral ischemia, which is rooted in the
Dear Kato: Darkening of the toes that hurt could result from compromised blood supply to those toes, leading to a condition called gangrene. Gangrene may occur after an injury or infection, or in people suffering from any chronic health problems, affecting blood circulation such as diabetes. It also often occurs in the toes and feet of elderly patients due to arteriosclerosis, a condition also known as senile gangrene. Arteriosclerosis occurs when the blood vessels that carry oxygen and nutrients from a particular area become thick and stiff, many times ending up restricting blood flow, in this case to the toes. Also, over a long period of time, people such as those with diabetes may have a buildup of fats, cholesterol and other substances in the arteries which may restrict blood flow.