American Society for Clinical Pathology (ASCP) Histotechnician Certification Practice Exam

Which condition is related to the recommendation of using a syringe for blood collection?

1. When the patient's blood pressure is unstable

2. When the patient has a deep vein

3. When the patient has fragile veins likely to collapse

4. When blood samples are required for multiple tests

The correct answer is: When the patient has fragile veins likely to collapse

The use of a syringe for blood collection is particularly recommended in situations where a patient has fragile veins that are likely to collapse. This is because a syringe allows for a more controlled and gentle method of blood collection. With the syringe, the healthcare provider can create a vacuum that draws blood into the container without applying as much negative pressure as a vacuum tube system, which can cause fragile veins to rupture or collapse. In instances of fragile veins, the risk of causing trauma to the vein increases, leading to complications such as phlebitis or hematoma formation. Therefore, using a syringe helps to minimize pressure and reduce the likelihood of vein damage, ensuring a successful and safe blood draw for the patient. This method allows the collector to carefully monitor the flow of blood and adjust as necessary, ensuring that the procedure is done effectively with minimal discomfort.