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Which of the following causes pooling of blood in veins?

A. Syringe method
B. Tourniquet
C. Capillary Tube
D. Evacuated tube method

Answer :

Pooling of blood in veins is caused by the use of (B) Tourniquet.

The following are the explanations for the other options:

A. Syringe method: A syringe method is a process of drawing blood by using a syringe and needle. This process may be used when drawing blood samples for lab tests or when blood must be drawn from a patient with fragile veins.

B. Tourniquet: A tourniquet is a medical device utilized to constrict blood vessels in order to slow down the blood flow. It may be used during surgery to reduce bleeding, during drawing blood, or even in an emergency situation.

C. Capillary Tube: A capillary tube is a long, thin tube used in science experiments and medical procedures for extracting small amounts of fluids. It is not used for drawing blood samples.

D. Evacuated Tube method: An evacuated tube method is a method of drawing blood where a pre-evacuated tube is inserted into the patient's vein. As the tube fills up, the pressure inside the tube decreases, allowing blood to flow in

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