A nurse is preparing to administer a 5 mg IV bolus of metoprolol to a patient for heart rate control.

The available metoprolol injection is 1 mg/mL. How many mL should the nurse administer per dose?

(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Choice A rationale

Propranolol is sometimes used to prevent migraines, so a history of migraines would not typically be a contraindication.

Choice B rationale

Hypothyroidism is not typically a contraindication for propranolol. However, propranolol can affect the metabolism of thyroid hormones and may mask signs of hyperthyroidism.

Choice C rationale

Propranolol is often used to treat hypertension, so a history of hypertension would not typically be a contraindication.

Choice D rationale

Propranolol is a non-selective beta-blocker, which means it blocks beta receptors in both the heart and the lungs. This can potentially cause bronchoconstriction and exacerbate asthma symptoms, so it should be used with caution in patients with a history of bronchial asthma.

Choice A rationale

A biopsy is not typically prescribed for plantar warts unless there is suspicion of a more serious condition, such as cancer.

Choice B rationale

Soaking feet in an antiseptic solution daily is not a standard treatment for plantar warts. Standard treatments include salicylic acid, cryotherapy (freezing), and other methods.

Choice C rationale

Plantar warts are not directly related to excessive foot perspiration. They are caused by the human papillomavirus (HPV) entering a cut or break in the skin.

Choice D rationale

Plantar warts may cause discomfort during walking due to their location on the soles of the feet.