A nurse is evaluating teaching on a client who has a new prescription for montelukast to treat asthma. Which of the following statements by the client indicates an understanding of the teaching?

Keeping the drainage system below the level of the client's chest prevents backflow of fluid or air into the pleural space and maintains negative pressure in the system.

a) Disconnecting the chest tube from the drainage system during transport is dangerous and can cause pneumothorax, infection, or bleeding. The chest tube should remain connected to the drainage system at all times unless ordered by the provider.
b) Emptying the collection chamber prior to transport is unnecessary and can interfere with accurate measurement of drainage. The collection chamber should be emptied only when it is full or at the end of each shift.
c) Clamping the chest tube prior to transferring the client to a wheelchair is contraindicated and can cause tension pneumothorax, as it prevents air from escaping the pleural space. The chest tube should only be clamped for a brief period when changing the drainage system or checking for air leaks, and only with a provider's order.

These findings are expected to be assessed in a client who has emphysema, which is a type of chronic obstructive pulmonary disease (COPD) characterized by destruction and enlargement of alveoli, loss of elastic recoil, and air trapping. These changes impair gas exchange and oxygenation, leading to chronic hypoxia and hypercapnia.

a) Dyspnea, or difficulty breathing, is a common symptom of emphysema, as the client has reduced lung capacity and increased work of breathing. Dyspnea may be worse with exertion, stress, or infection, and may cause anxiety and fatigue. The nurse should monitor the client's respiratory rate, rhythm, depth, and effort, and provide oxygen therapy as prescribed.
b) Barrel chest, or increased anteroposterior diameter of the chest, is a physical sign of emphysema, as the client has chronic air trapping and hyperinflation of the lungs. Barrel chest may also cause kyphosis, or curvature of the spine, and reduced chest wall movement. The nurse should measure the client's chest circumference and observe for any deformities or asymmetry.
d) Clubbing of the fingers, or enlargement and rounding of the nail beds, is a late sign of emphysema, as the client has chronic hypoxia and tissue ischemia. Clubbing may also affect the toes and ears, and may indicate pulmonary or cardiac disease. The nurse should inspect the client's nails for shape, color, angle, and capillary refill.

c) Deep respirations are not expected to be assessed in a client who has emphysema, as the client has shallow and rapid breathing due to air trapping and reduced lung compliance. Deep respirations may indicate other conditions, such as metabolic acidosis or anxiety. The nurse should assess the client's arterial blood gas levels and provide reassurance and relaxation techniques as needed.
e) Bradycardia, or slow heart rate, is not expected to be assessed in a client who has emphysema, as the client has tachycardia or normal heart rate due to hypoxia and increased sympathetic stimulation. Bradycardia may indicate other conditions, such as medication side effects, vagal stimulation, or heart block. The nurse should monitor the client's pulse rate, rhythm, quality, and electrocardiogram as indicated.