A nurse is assessing for allergies with a client who is scheduled to receive the influenza vaccine.
Which of the following allergies should the nurse report to the provider as a possible contraindication to receiving the vaccine?

The nurse should advise the client to avoid taking St. John’s Wort with sertraline because it can increase the risk of a rare but serious condition called serotonin syndrome. Serotonin syndrome can cause symptoms such as confusion, hallucination, seizure, extreme changes in blood pressure, increased heart rate, fever, excessive sweating, shivering or shaking, blurred vision, muscle spasm or stiffness, tremor, incoordination, stomach cramp, nausea, vomiting, and diarrhoea.

Choice B. Black cohosh is wrong because it is a herbal supplement that is used to treat menopausal symptoms and has no known interaction with sertraline.

Choice C. Coenzyme Q is wrong because it is a natural substance that is involved in energy production and has no known interaction with sertraline.

Choice D. Ginger root is wrong because it is a spice that is used to treat nausea and has no known interaction with sertraline.

This is because a weight gain of 2.5 kg (5 Ib) in 2 days indicates a worsening of heart failure and fluid retention, which may require an adjustment of the diuretic dose or other medications.

The provider should be informed of this change as soon as possible to prevent further complications.

Choice A is wrong because teaching the client about foods low in sodium is not the first action the nurse should take.

While a low-sodium diet is important for heart failure patients, it is not an urgent intervention and it does not address the immediate problem of fluid overload.

Choice B is wrong because determining medication adherence by the client is not the first action the nurse should take.

While it is important to assess if the client is taking furosemide as prescribed, it is not an urgent intervention and it does not rule out other causes of fluid retention, such as renal impairment or disease progression.

Choice C is wrong because encouraging the client to dangle the legs while sitting in a chair is not the first action the nurse should take.

While this may help reduce edema in the lower extremities, it does not address the underlying cause of fluid overload and it may worsen pulmonary congestion by increasing venous return to the heart.