A nurse is preparing to administer 1 mg vitamin K to a newborn. The medication is available in 1 mg/0.5 mL. How much should the nurse administer?

(Round to the nearest tenth. Use a leading zero when applicable. Do not use a trailing zero.)

Choice A reason:

Intense pruritus: While itching (pruritus) can be a symptom of skin conditions, it is not a definitive sign of malignancy in nevi. Pruritus can be associated with benign conditions such as eczema or allergic reactions. However, if a mole starts to itch, it should be monitored closely, but it is not as strong an indicator of malignancy as irregular borders.

Choice B reason:

Irregular borders: This is a significant sign of potential malignancy in nevi. Melanomas often have uneven, notched, or scalloped borders, unlike benign moles, which typically have smooth, even borders. The irregularity in the border is due to the uncontrolled growth of melanocytes, which can spread unevenly.

Choice C reason:

Uniform pigmentation: Uniform pigmentation is generally a sign of a benign mole. Malignant moles often have multiple colors or an uneven distribution of color, which can include shades of brown, black, red, white, or blue. A mole with uniform color is less likely to be malignant.

Choice D reason:

Purulent drainage: While purulent drainage (pus) indicates an infection, it is not a typical sign of malignancy in nevi. Infections can occur in any skin lesion, but they do not specifically indicate cancer. Malignant moles are more likely to change in size, shape, or color rather than produce pus.

Choice A reason:

Albuterol is primarily a bronchodilator and does not significantly reduce inflammation. Anti-inflammatory medications, such as corticosteroids, are typically used to address inflammation in the airways.

Choice B reason:

While albuterol can help reduce coughing episodes by opening the airways and making breathing easier, it is not its primary function. Coughing can be a symptom of bronchospasm, which albuterol helps to relieve.

Choice C reason:

Albuterol is effective in preventing wheezing by relaxing the muscles around the airways, which helps to open them up and allow more air to flow through. This action helps to alleviate wheezing, a common symptom of asthma and other respiratory conditions.

Choice D reason:

The primary function of albuterol is to open the airways. It is a bronchodilator that works by relaxing the smooth muscles around the airways, allowing them to widen and making it easier to breathe.

Choice E reason:

Albuterol does not stimulate the flow of mucus. Its main action is to relax the airway muscles and improve airflow. Mucus production is typically managed by other medications or treatments.