The most common dressing used to cover an IV site is a transparent dressing. This dressing:

Choice A reason: Transparent dressings are designed to secure IV catheters, not cause dislodgement. They adhere firmly, reducing movement and maintaining catheter stability, which prevents complications like infiltration or accidental removal during therapy.
Choice B reason: Permeability to air does not prevent air embolus, which occurs from air entering the bloodstream via the catheter. Transparent dressings are semi-occlusive, allowing some air exchange but primarily preventing moisture and bacterial entry.
Choice C reason: Not all transparent dressings are hypoallergenic; some patients may have adhesive sensitivities. While many are designed to minimize reactions, their primary function is to protect the site and allow visualization, not guarantee hypoallergenicity.
Choice D reason: Transparent dressings are impermeable to moisture, preventing bacterial entry and infection while allowing visualization of the IV site. This enables nurses to monitor for signs of infiltration, infection, or dislodgement without removing the dressing.

Choice A reason: Placing the catheter in the left hand may be unsafe if the mastectomy was on the left side, as lymph node removal can cause lymphedema, increasing infection or swelling risks. Physician guidance ensures site safety.
Choice B reason: The right foot is an alternative site but not ideal for adults due to higher infection risks and mobility issues. Post-mastectomy, the physician must confirm the safest site to avoid complications like lymphedema or poor venous access.
Choice C reason: The right hand may be contraindicated if the mastectomy was on the right side, as lymph node dissection increases lymphedema risk. Physician consultation is necessary to determine the appropriate site based on surgical history.
Choice D reason: Consulting the physician ensures the IV site avoids the mastectomy side, where lymph node removal increases lymphedema and infection risks. This step confirms safe venous access, preventing complications in patients with altered lymphatic drainage.