Which of the following is a common complication of venipuncture?

Infection is a common complication of venipuncture due to the potential introduction of pathogens into the bloodstream at the site of needle insertion. When the skin is punctured, there is a risk that bacteria on the skin's surface may enter the body, particularly if proper aseptic techniques are not employed. Infection can manifest in various ways, including localized redness, swelling, or discharge at the puncture site, and in some cases, may lead to systemic problems if the infection spreads.

The other options present medical conditions that can occur under various circumstances but are not directly linked to the act of venipuncture itself. Overhydration may occur in patients receiving intravenous fluids but is not a complication of drawing blood. Hypotension, or low blood pressure, can result from various factors, including stress or fainting during the procedure, but it is not a direct complication of venipuncture. Anemia is a condition defined by a deficiency in red blood cells or hemoglobin and can result from repeated draws or an underlying health issue rather than being a complication of the venipuncture process itself. Thus, infection stands out as the most relevant and common complication associated with venipuncture.