ATI LPN
Study Guide for Fundamentals of Nursing Care: Concepts, Connections & Skills
Chapter 34 : Phlebotomy and Blood Specimens Questions
Question 1 of 5
Which of the following is most important when assessing for a suitable vein to use for venipuncture?
Correct Answer: B
Rationale: The sense of touch is critical for assessing vein suitability, as it allows the phlebotomist to feel for a vein's size, elasticity, and depth.
Question 2 of 5
There are several tips you may use to find a suitable vein for venipuncture. Which of the following techniques is inappropriate?
Correct Answer: C
Rationale: Slapping the skin is inappropriate as it may cause discomfort or bruising and is not a standard technique for vein distension.
Question 3 of 5
Which of the following statements is(are) true regarding the correct techniques for phlebotomy?
Correct Answer: C,D
Rationale: Labels should be applied before filling tubes to ensure accuracy, and applying a tourniquet over clothing protects fragile skin. The tourniquet should not be left on for more than 1 minute, and it is typically applied 3-4 inches above the site.
Question 4 of 5
The labels you apply to the blood specimen tubes should contain some of the following data. Which data should be included on the label?
Correct Answer: A,B,C,G
Rationale: Labels must include the patient's name, hospital ID (for inpatients), date of birth (for outpatients), date and time of collection, and the phlebotomist's initials to ensure proper identification and traceability.
Question 5 of 5
You should avoid which of the following actions that can cause hemolysis?
Correct Answer: B,C
Rationale: Leaving the tourniquet on too long or using a small-gauge needle (e.g., 25-gauge) with an evacuated tube can cause hemolysis due to excessive pressure or shear stress on red blood cells.