Category: C

A chemical sensor in some clinical laboratory analyzers that functions similarly to a pH electrode.  

A blood gas electrode used to measure the carbon dioxide tension (symbolized as PC02) in blood. Its operation is based on the diffusion of carbon dioxide from the blood sample through a semipermeable membrane into a buffer solution with a subsequent change in the pH of the buffer.  

An electrode that develops a standard electric potential and is used to provide a reference voltage in the circuit for sensing electrodes. It is composed of an amalgam of mercury and mercury chloride. It is used as a standard in determining the pH of fluids.  

An angled or sharpened edge for cutting, as an incisor tooth or the blade of a knife.  

Accumulation of fluid due to congestive heart failure. It is most apparent in the dependent portion of the body and/or the lungs. Edema that arises in cases of heart failure, caused by elevated pressure in the veins. This swelling is most pronounced in the body’s lower regions, like the lower limbs and the lower back,…

Any electrical activation of the heart that originates outside the sinoatrial node.  

The presence of glandular cells (which are normally found within the cervical canal) on the surface of the cervix.  

An eye disorder in which the corneal endothelium becomes cloudy, resulting in myopia.  

A form of retinitis pigmentosa in which central visual loss occurs first. Common symptoms include progressive visual loss followed by the loss of color perception, and eventually, peripheral visual loss and night blindness. The visual loss is not correctable with standard lenses.  

Difficult breathing that results from- inadequate cardiac output (i.e., from heart failure).