Exam 53: Assisting in Phlebotomy

The slant at the open end of a needle used for venipuncture is called the:

You notice that a patient is developing petechiae during a blood draw.This typically means that the patient has a bleeding disorder.

Blood should be collected only by dermal puncture in children under age 2.

A tourniquet is used during the phlebotomy procedure to:

Once the top of a Vacutainer tube has been punctured, it cannot be reused, even if the needle that punctured it was sterile.

Why should a tourniquet not be tied too tightly?

Leaving a tourniquet on longer than 1 minute greatly increases the chance of __________.

_________ is an anticoagulant that prevents platelets from clumping and preserves the appearance of blood cells for microscopic preparation.

All Vacutainer tubes should be inverted three to five times to mix the blood sample with the tube additive.

The typical site for a capillary puncture on an infant is the medial or lateral side of the __________.

The largest of the Vacutainer tubes typically used for phlebotomy fills to a volume of 10 mL.Approximately _____ tubes are needed to fill a pint (473 mL).

The smaller the gauge of the venipuncture needle, the less likely it is that hemolysis of blood cells will occur.

The proper procedure for collecting a serum specimen is to:

When is the correct time to remove the tourniquet during a routine venipuncture?

The needle size most commonly used for adult venipuncture is _____ gauge.

When the needle is inserted into the vein during a routine venipuncture, the bevel of the needle should be facing down.

Describe the steps medical assistants must take to protect themselves and co-workers against needle-stick injuries.

A patient must give verbal consent before venipuncture can be performed.

Before a routine venipuncture or capillary puncture, the site typically is cleaned with:

Using a collection needle with a wider lumen reduces the chance that __________ will occur.