A patient with a history of chronic bronchitis is admitted to the medical unit, and the nurse notes that the red blood cell (RBC) count is elevated. Which of the following is the primary contributing factor to this laboratory result?

A nurse is monitoring a patient with a colostomy. Which observation requires immediate attention?

Which dietary modification should be recommended for a patient with Meniere's disease to help control the symptoms?

During nebulization for a patient with chronic obstructive pulmonary disease (COPD), the nurse notes that the medication is not visibly misting. What is the best nursing action to address this issue?