Which instruction is highest priority when the nurse is developing a teaching plan for a patient with Addison's disease?

A. Fatigue: While fatigue can occur in lung cancer patients, it is not the most common symptom. Fatigue is more of a generalized symptom that can be seen in many diseases, not specific to lung cancer.
B. Hoarseness: Hoarseness can be a symptom of lung cancer, particularly if a tumor is affecting the laryngeal nerves. However, it is less common than a persistent cough and is not usually the initial symptom.
C. Anorexia: Anorexia (loss of appetite) can occur in patients with advanced cancer, including lung cancer, but it is not the most common presenting symptom. Weight loss due to anorexia is more common in later stages.
D. Persistent cough: This is the correct answer. A persistent cough is the most common symptom of lung cancer, especially in the early stages. The cough may be dry or productive and is often overlooked or mistaken for a chronic respiratory condition. It is frequently one of the first signs that leads to further investigation and diagnosis.

A. A pleural friction rub occurs when the pleural surfaces rub against each other, usually due to inflammation, but it does not directly cause increased bubbling in the water seal chamber of a chest drainage unit.
B. An infection at the drainage site could lead to localized symptoms like redness or discharge, but it does not directly cause increased bubbling in the water seal chamber.
C. A bronchopleural leak is the most likely cause of increased bubbling in the water seal chamber. This occurs when there is an air leak between the lungs and pleural space, causing continuous air to enter the chest drainage system.
D. Complete lung re-expansion would not typically cause bubbling in the water seal chamber. Once the lung is fully re-expanded, bubbling should stop.