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(fĭs″tū-lĕk′tō-mē) [″ + Gr. ektome, excision] Excision of a fistula.


(fish′chŭ-lĭ-zā′shŏn, -lī-) [fistula] Formation of a fistula by an extension of an inflammatory process from the tissue of origin to an adjacent structure.


(fĭs″tū-lō-ĕn-tĕr-ŏs′tō-mē) [″ + Gr. enteron, intestine, + stoma, mouth] A surgical connection of a fistula into the intestine, e.g., biliary fistula.


(fis′chŭ-lă-gram″) [fistula + -gram] A radiographical image of any abnormal tunnel found on the surface or inside the body. Images of fluids injected into the fistula reveal the dimensions of the fistula and show the organs in which it originates and ends.


(fis″chŭ-lot′ŏ-mē, fish″) [fistula + -tomy] Surgical treatment of a fistula typically originating in the gastrointestinal tract, e.g., an anal fistula or a fistula resulting from Crohn disease.


[Abbr. of fecal immunochemical test] A noninvasive test for the presence of hemoglobin (blood) in stools, used to screen for colon cancer.


(fĭt) [AS. fitt] 1. A sudden attack, convulsion, or paroxysm. SEE: convulsion. 2. Modification of one structure to that of another, as in dental restoration.


(fit′nĕs) 1. Biological fitness. 2. Physical fitness.

biological f. The ability of an individual to produce offspring that survive to adult life and are themselves able to reproduce.

cardiorespiratory f. The ability to perform well on standard tests, such as exercise treadmill tests, that gauge a person’s maximal oxygen consumption, heart rate, and/or blood pressure in response to exercise.

physical f. The ability to carry out daily tasks with vigor and alertness, without undue fatigue, and with enough energy to enjoy leisure-time pursuits and meet unforeseen emergencies. It is the ability to withstand stress and persevere under difficult circumstances in which an unfit person would quit. Fitness is more than absence of illness; it is a positive quality that everyone has to some degree. It is minimal in the severely ill and maximal in the highly trained athlete. People who maintain a high level of fitness may have increased longevity as compared to those who are sedentary. In addition, the quality of life is enhanced for those who are fit.

fitness activity tracker

A device worn by a person, e.g., on the wrist, that measures level of exertion, heart rate, or other physiologic variables.

fit test

A test to determine how effectively a mask or respirator will protect the wearer from inhaled dusts, gases, or pathogens.


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