Which complication is most likely to occur if post-puncture pressure is not applied adequately after arterial puncture?

After an arterial puncture, it is crucial to apply adequate post-puncture pressure to prevent complications. Inadequate pressure can lead to hematoma formation, which is the accumulation of blood outside of blood vessels in the surrounding tissues. When a puncture is made, blood vessels are pierced, and without sufficient pressure applied afterward, blood can leak into the surrounding area, leading to swelling and the formation of a hematoma.

This condition can be localized to the site of the puncture and is typically characterized by pain, swelling, and discoloration at the site. Other complications such as severe hypertension, dermatitis, or fever are not directly linked to inadequate post-puncture pressure following an arterial puncture, making hematoma formation the most likely consequence in this scenario. Thus, understanding the importance of applying adequate pressure after such procedures is essential for preventing complications like hematoma.