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(end′tīd′ăl) Pert. to or occurring at the end of exhalation.

Endtz test

A test for detecting excessive levels of myeloperoxidase in semen. Peroxidase staining of semen identifies leukocytospermia.


The ability to withstand extraordinary mental or physical stress for a prolonged period.

endurance training

SEE: under training.

enduring material

(in-ū-i mŭ-tir-ē-ŭl) Any form of continuing education that can be accessed by independent learners and used for a period of months or years before its content expires.


[Gr. -ēnē, feminine adj. suffix] Suffix in chemistry used in naming unsaturated hydrocarbons, e.g., benzene, and esp. a compound with one double bond, e.g., ethylene.


(en′ĕ-mă) [Gr. enema, injection] 1. The introduction of a solution into the rectum and colon to stimulate bowel activity and cause emptying of the lower intestine, for feeding or therapeutic purposes, to give anesthesia, or to aid in radiographic studies. 2. A solution introduced into the rectum.

air contrast e. An enema in which two contrast agents, thick barium sulfate and air, are introduced simultaneously under fluoroscopic control, followed by multiple radiographs of the colon. This technique produces better visualization of mucosal lining lesions, such as polyps or diverticula, than barium enemas performed without air.

lubricating e. An enema to soften and ease the passage of feces through the anal canal.

nutrient e. An enema containing predigested foods to nourish a patient unable to be fed otherwise. SYN: nutritive e.

retention e. An enema that may be used to provide nourishment, medication, or anesthetic. It should be made from fluids that will not stimulate peristalsis. A small amount of solution, e.g., 100 to 250 mL, is typically used in adults.

PATIENT CARE: The procedure and expected sensations are explained to the patient. Necessary equipment is assembled; the patient is draped for warmth and privacy and assisted into a left side-lying position with the right knee flexed (Sim position). The tubing is cleared of air, and the small lubricated tube is inserted 3 to 4 in (7.5 to 10.0 cm) into the rectum and is not removed (unless absolutely necessary) until the procedure is completed. The fluid is allowed to flow very slowly, with stops made at intervals to aid retention. If the patient experiences an urge to defecate, the fluid flow is stopped until the urge passes. When the entire volume has been instilled, the tube is quickly withdrawn, the patient’s buttocks are compressed together for a few minutes to prevent evacuation, and the patient is encouraged to retain the enema for ...

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