by qualityDescribe the mode ofaction of ethylenediaminetetraacetate (EDTA) and h
ID: 239918 • Letter: B
Question
by qualityDescribe the mode ofaction of ethylenediaminetetraacetate (EDTA) and heparin. . identify the major potential type of error in specimen . Assess the cause and formulate a solution to correct five specific situations that could complicate venipuncture site selection . Name eight typical phlebotomy problems, and describe the solution for each problem. tion. Explain some techniques for obtaining blood from small or difficult veins Describe special blood collection considerations for pediatric and geriatric patients. Categorize the symptoms of potential phlebotomy complications and propose treatment for each type of · complication. Demonstrate and describe the proper technique for collecting a capillary blood specimen.Explanation / Answer
EDTA Ethylene Di-amene Tetra Acetic acid:
EDTA is available in three different forms such as
It acts by removing of calcium ions (calcium is important for blood clotting) so the blood does not clot.
By this way, the blood cells can be preserved for 4 hours and hence it is a good choice for peripheral smear preparations. Sometimes the EDTA volume is excess than he blood filled then it leads to shrinkage of RBCs. It is also not appropriate for coagulation studies.
Heparin:
Heparin act as a antithrombin and antithromboplastin. It acts as a anticoagulation by prevents the conversion of prothrombin to thrombin.It is not suitable for blood smear examination and cell count which leads to clumping of cells.
1. Before the specimen collection
a. Requisition of the inappropriate test.
b. Error in patient identification.
c. error in patient preparation
d. Improper collection of patient details.
During the specimen collection
a. Missing of sample
b. Lack of required blood volume
c. Improper anticoagulant ratio.
d. Inadequate tube mixing.
e. Error in the identification of correct container
f. Contamination of blood from the injection site.
After the specimen collection:
a. Error in labeling of the specimen.
b. Delay in transportation.
c. Delay in centrifugation.
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