Evolve HESI Practice Exam 2025 - Free HESI Practice Questions and Study Guide

The primary reason for starting intravenous infusions in the upper extremities of adults relates to the anatomical and physiological aspects of the veins in that area. The veins in the upper extremities, particularly the antecubital fossa, generally offer larger and more accessible vessels, which facilitate the administration of fluids and medications efficiently.

In this context, while comfort is an important consideration for patient care, the anatomical advantages provided by the upper extremities outweigh merely subjective comfort levels. Accessing larger veins significantly contributes to the ease and effectiveness of infusion therapy, which is crucial in medical settings, especially for patients requiring rapid or high-flow infusions.

Additionally, choosing the upper extremities helps in minimizing the risk of complications such as venous thrombosis. Maintaining good venous flow helps prevent clot formation, which can occur if the infusions are delivered using smaller veins or if flow rates are inadequate. Though other options consider visibility and access, they are secondary benefits when compared to the overall goal of ensuring successful intravenous therapy through optimal vessel selection and maintaining adequate flow rates to reduce complications.