A client is receiving IV fluids by gravity infusion and exhibits signs of fluid volume overload. When assessing the client's IV delivery system, where should the nurse assess first?

Rationale: A: This shows the IV insertion site on the hand. While important for checking infiltration or phlebitis, it does not affect flow rate or volume delivered, so it's not the priority in fluid overload. B: This shows the IV drip chamber. This is the first place to assess because it allows the nurse to determine how fast the IV fluid is infusing. It provides a quick visual cue of the actual flow rate, which is essential in evaluating whether the infusion is too fast, the likely cause of the overload. C: This is the IV tubing near the insertion site. Kinks or dislodgement can affect flow, but it’s not the most immediate concern when fluid overload is suspected. D: Shows the roller clamp, this directly controls the flow rate in a gravity system, so it is the place to intervene when fluid overload is suspected. After assessing the flow rate in the drip chamber and confirming fast infusion, the nurse should adjust the flow rate at this part.