Description

Patients with uremia often have a coagulopathy with oozing from puncture sites and bleeding from mucosal surfaces. The causes of the bleeding are often multifactorial. A variety of therapeutic maneuvers can help control the bleeding, but some may only be effective for a short period of time.


 

Factors favoring bleeding:

(1) anemia

(2) thrombocytopenia

(3) acquired platelet dysfunction

(4) telangiectasia

(5) increased fibrinolysis

(6) concurrent anticoagulation (heparin during hemodialysis, etc.)

(7) concurrent defects in coagulation factors (vitamin K deficiency, other)

 

Therapy for anemia targets keeping the hematocrit > 30%:

(1) with packed RBC transfusions

(2) erythropoietin

 

Therapy for platelet quantitative and qualitative defects:

(1) dialysis

(2) platelet transfusion

(3) von Willebrand factor availability: cryoprecipitate or desmopressin (DDAVP)

(4) avoiding medications causing platelet dysfunction

 

Therapy if bleeding from telangiectasia:

(1) estrogens, either conjugated or transdermal low dose

 

Therapy to reduce fibrinolysis:

(1) aminocaproic acid (EACA, Amicar)

 

Therapy

Disadvantages

RBC transfusion

infection, iron overload

erythropoietin

hypertension, thrombotic events

dialysis

access complications, infection

platelet transfusions

transfused platelets quickly become dysfunctional

cryoprecipitate

risk of infection

desmopressin

tachyphylaxis after 2-3 doses

estrogens

onset takes several days; hot flashes with high doses

aminocaproic acid

thrombotic events, hypertension

 


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