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(hē″mō-krō′mō-jĕn) [″ + chroma, color, + gennan, to produce] A compound, such as hemoglobin, in which heme is combined with a nitrogen-containing molecule; e.g., protein.


(hē′mō-klĭp) A metal or absorbable clip used to ligate blood vessels.


(hē″mō-kŏn-sĕn-trā′shŭn) A relative increase in the number of red blood cells resulting from a decrease in the volume of plasma, e.g., in dehydration.


(hē′mŏ-kŭl″chŭr) [hem- + culture] The isolation of bacterial or parasitic infectious agents from blood incubated in the laboratory on special nutrients, such as glucose or nitrates.


(hē″mō-kū′prē-ĭn) A blue copper-containing compound present in red blood cells.


(hē′mō-sīt) [″ + kytos, cell] 1. Any blood cell. 2. A red blood cell.


(hē″mō-sī′tō-blăst) [″ + ″ + blastos, germ] An undifferentiated stem cell found in mesenchymal tissues that may give rise to any type of blood cell. SEE: illus.





hemocytometer, hemacytometer, hematocytometer

(hē″mŏ-sī-tom′ĕt-ĕr, hē″mă-tō-sī-tom′ĕt-ĕr) [hemocyte + -meter, measure] A device for determining the number of cells in a stated volume of blood.


(hē″mō-dī″ŏ-fĭl-trā′shŭn) [″ + Gk. dia, through + ″] A method of ultrafiltration in which a patient’s blood is directed through a hemofilter and then dialyzed by a counter-current solution before it is returned to the patient. Volume, electrolytes, metabolites, or toxins are removed from the blood before it re-enters the body.


(hē″mō-dī-al′ĭ-sĭs, ′ĭ-sēz″) pl. hemodialyses [hemo- + dialysis] The clearing of urea, metabolic waste products, toxins, and excess fluid from the blood by use of an artificial kidney. This procedure is used to treat end-stage renal failure, transient renal failure, and some cases of poisoning or drug overdose. In the U.S., more than 345,000 patients undergo hemodialysis regularly for end-stage renal disease. The primary use of hemodialysis is to manage renal failure, a disorder in which fluids, acids, electrolytes, and many drugs are ineffectively eliminated in the urine. Hyperkalemia, uremia, fluid overload, acidosis, and uremic pericarditis are other indications for hemodialysis. SEE: table; hemoperfusion;. SEE: Nursing Diagnoses Appendix.

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Routine Precautions for the Care of All Hemodialysis Patients

Patients should have specific stations assigned to them, and their chairs and beds should be cleaned after each use.

Ancillary supplies, e.g., trays, blood pressure cuffs, clamps, scissors, and nondisposable items, should not be shared by patients.

Nondisposable items should be cleaned ...

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