CAMRT Radiography Practice Exam

Which CT scanning technique is particularly prone to needle displacement complications?

1. Peripheral venous access

2. Arterial puncture

3. Intravenous catheterization

4. Intramuscular injection

The correct answer is: Peripheral venous access

The chosen answer, which pertains to peripheral venous access, highlights a situation in which needle displacement can be a significant complication. During peripheral venous access, a needle is inserted into a vein in the extremities to either draw blood or administer medications. This procedure often requires a degree of precision and dexterity, as the veins can be difficult to locate, especially in patients with challenging venous access due to factors like dehydration or obesity. If the needle is not stabilized properly after insertion or if the patient moves unexpectedly, the needle can easily shift out of the vein. This can lead to complications such as hematoma formation, infiltration of the surrounding tissues, or even phlebitis. Moreover, if the needle displaces and enters surrounding structures, it may cause pain or injury. Other techniques, such as arterial puncture, intravenous catheterization, and intramuscular injection have their own risks, but they are generally less prone to displacement complications in the way that peripheral venous access is. For instance, during arterial puncture, the artery is larger and more resilient, which may provide a more stable target once the needle is inserted. Intravenous catheterization, while also involving needle placement in a vein, often employs more secure and stable devices