California Phlebotomy Certification Practice Exam

Which of the following is an important step in performing a successful venipuncture?

1. Use a syringe instead of a tube

2. Ensure the patient is not dehydrated

3. Keep the tourniquet on for over 5 minutes

4. Have the patient fast before the procedure

The correct answer is: Ensure the patient is not dehydrated

Ensuring that the patient is not dehydrated is a crucial step in performing a successful venipuncture for several reasons. Dehydration can lead to a decrease in blood volume and may make veins more difficult to locate and puncture. When a patient is well-hydrated, their blood vessels are more engorged with blood, making them easier to visualize and access. This significantly enhances the phlebotomist's ability to collect a blood sample efficiently and reduces the likelihood of complications, such as multiple attempts at venipuncture or damage to the veins. The other options present considerations that may not necessarily contribute positively to a successful venipuncture. For instance, using a syringe instead of a tube may be suitable in some scenarios, but it is not a general requirement for venipuncture. Keeping the tourniquet on for over five minutes can lead to complications such as hemolysis or increased levels of certain analytes in blood. Lastly, having the patient fast before the procedure is not necessary for all types of blood tests and can depend on the specific test being conducted. Therefore, ensuring the patient is well-hydrated stands out as a vital practice for facilitating an effective venipuncture.