Which of the following symptoms relates to an air embolism?

Cyanosis and a weak pulse are indeed significant symptoms that relate to an air embolism. When air enters the bloodstream, it can obstruct blood flow and interfere with the delivery of oxygen to tissues. This lack of oxygen can cause cyanosis, which manifests as a bluish discoloration of the skin, particularly around the lips, fingertips, and toes. Additionally, the introduction of air can cause a reduction in effective circulation, leading to a weak pulse, as the heart may struggle to pump blood efficiently when air bubbles obstruct the vascular system.

In contrast, while symptoms like fever and chills can indicate an infection or other issues, they are not specific to an air embolism. Sudden pain at the IV insertion site may suggest local irritation or another issue, but does not necessarily indicate an air embolism. Swelling around the insertion site is also more indicative of localized complications such as infiltration or phlebitis, rather than the systemic effects of an air embolism.