The next step in diagnosis is a 12 lead ECG which can be performed in the doctorsâ office over a short period of time; however this is often non-conclusive in diagnosis because it is not very sensitive and there is only a small chance of a premature ventricular contraction occurring in the short period of time.
Microform is a general term for any material that contains a small image or microreproduction of a document. These document images are usually found on film, however some older formats used cardboard. There are two common film formats: microfilm and microfiche. Microfilm is a roll of film.Microfiche is a flat sheet of film. Since the images are so small, special readers/scanners are used to view the documents.hese document images are usually found on film, however some older formats used cardboard. There are two common film formats: microfilm and microfiche. Microfilm is a roll of film. Microfiche is a flat sheet of film.
A micron is a unit of linear measure in the metric system used to measure distance from one point to another. The particles and contaminants that we are trying to filter out are far smaller than can be seen with the naked eye, magnifying glass or even a low powered microscope.