hemodilution


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hemodilution

 [he″mo-dĭ-loo´shun]
increase in the fluid content of blood, resulting in diminution of the concentration of formed elements.

he·mo·di·lu·tion

(hē'mō-di-lū'shŭn),
Increase in the volume of plasma in relation to red blood cells; reduced concentration of red blood cells in the circulation.

hemodilution

Cardiovascular surgery A technique used during cardiopulmonary bypass to ↓ risk of intraoperative thrombosis diluting the blood with crystalloids, ↓ hematocrit to ≤ 0.25-0.30 Transfusion medicine The removal of blood from a Pt at induction of anesthesia while replacing the volume with crystalloids–eg, saline or lactated Ringer's solution, or with colloids–eg, albumin, hydroxyethyl starch, dextrans, or purified protein fractions, or a combination of the 2. See Albumin, Dextrans, Hydroxyethyl starch, Intraoperative hemodilution, Purified protein fractions, Surgical blood management.

he·mo·di·lu·tion

(hē'mō-di-lū'shŭn)
Increase in the volume of plasma in relation to red blood cells; reduced concentration of red blood cells in the circulation.
Synonym(s): haemodilution.
References in periodicals archive ?
This decrease in TEC in the last trimester has been attributed to the hemodilution effect because of an increased plasma volume (Guyton and Hall, 1996).
Surgeon A, who operated all 396 children (Group A) used retrograde autologous blood priming (RAP) of the pump circuit to reduce the impact of hemodilution. Surgeon B, (Group B), who operated an equal number of 396 children, in contrast, practiced bloodless priming.
Vargas, "Pulmonary gas exchange in Andean natives with excessive polycythemia--effect of hemodilution," Journal of Applied Physiology, vol.
The mild hemodilution does not have a high negative impact on the oxygen-carrying capacity of blood, blood coagulation or in the heart, brain and kidneys, while allowing the collection of enough autologous blood; 3) When a large amount of blood needs to be collected, erythropoietin and iron are administered to promote the formation and maturation of erythrocytes in patients, preventing preoperative anemia.
The primary objective was to assess the accuracy of cPDE in predicting the hemodilution responsiveness using the receiver operating characteristic (ROC) curve and gray zone approaches [6].
"Triple-H" (hypertension, hypervolemia, and hemodilution) therapy and calcium channel blockers have been shown to improve treatment outcomes.
A modest overnight drop in hematocrit from 41% to 35% was noted, presumed to be partially related to hemodilution caused by the IV fluids.
Wijeysundera et al., "Hemodilution during cardiopulmonary bypass is an independent risk factor for acute renal failure in adult cardiac surgery," Journal of Thoracicand Cardiovascular Surgery, vol.
Hamid et al., "Effect of hemodilution on retinal hemodynamics in retinal branch vein occlusion," Der Ophthalmologe, vol.
Various mechanisms have been proposed to explain the origin of anemia in trypanosomiasis, these include suppression of erythropoietic activity due to bone marrow depression, hemodilution, hemolysis resulting from immunological factors, direct parasite action and the products released by parasites.
A negative correlation between air temperature, PCV, number of RBCs and HB concentration was reported [20], while in the present study a negative relationship was also noted between these hematological constituents and THI, which can be attributed to the hemodilution effect [28].
Hemodilution due to right-sided heart failure, although not true anemia, is associated with adverse outcomes.