A nurse is preparing to administer an enteral feeding via NG tube for a client the day after verifying placement of the tube using a chest x-ray. Which of the following methods should the nurse use to confirm placement prior to initiating the feeding?

A. Monitoring the insertion site for infection: Infection is a potential complication, but it is not an immediate concern right after the procedure. Signs of infection develop hours to days later, so this assessment is important but not the priority in the immediate postprocedure period.

B. Checking for orthostatic hypotension: Orthostatic changes are not typically the most urgent issue immediately after cardiac catheterization. The client is usually kept in a supine position, which limits the risk of sudden blood pressure drops. While monitoring vital signs is important overall, vascular site integrity takes precedence at this stage.

C. Forcing fluids: Increasing fluid intake is encouraged postprocedure to promote excretion of contrast dye and protect kidney function. However, this intervention does not address the primary acute risk, which is bleeding from the catheter insertion site. Fluids are helpful but not the most immediate priority.

D. Immobilizing the affected extremity: The insertion site, often in the femoral artery, is at high risk for bleeding or hematoma formation immediately after the procedure. Immobilizing the extremity helps maintain pressure at the site and prevents disruption of the arterial puncture. This action directly reduces the risk of hemorrhage, making it the top priority.

A. Lethargy: Lethargy can be a nonspecific symptom of many conditions, including infection or general illness, but it is not a hallmark sign of gentamicin toxicity. While monitoring overall status is important, lethargy alone does not indicate ototoxicity or nephrotoxicity.

B. Weight gain: Weight gain may reflect fluid retention or other metabolic changes, but it is not a primary indicator of gentamicin toxicity. Nephrotoxicity could eventually cause fluid retention, but weight gain is a delayed and nonspecific finding.

C. Tinnitus: Tinnitus, or ringing in the ears, is a classic early sign of ototoxicity associated with aminoglycosides like gentamicin. It indicates damage to the inner ear and requires immediate assessment and potential discontinuation of the drug to prevent permanent hearing loss.

D. Slurred vision: Slurred vision is not typically associated with gentamicin toxicity. Visual changes are not a known adverse effect of aminoglycosides, so this finding would prompt evaluation for other causes rather than drug toxicity.