A nurse is caring for a client who is receiving oxygen therapy via a nasal cannula. How should the nurse explain to the client how this method of oxygen delivery performs?

Choice A reason: Positioning the collection device below the level of the chest is crucial to ensure proper drainage of air or fluid from the pleural space. This positioning uses gravity to facilitate drainage and prevent backflow into the pleural cavity, which could lead to complications such as pneumothorax or pleural effusion. The collection device should always be kept below the chest level to maintain effective drainage.

Choice B reason: Clamping the chest tube is generally not recommended unless specifically ordered by a physician or during certain procedures. Clamping can lead to a buildup of air or fluid in the pleural space, increasing the risk of tension pneumothorax. It is essential to keep the chest tube unclamped to allow continuous drainage and prevent complications.

Choice C reason: Applying an occlusive dressing over the chest tube site is necessary to prevent air from entering the pleural space and to secure the tube. However, this is not the primary action related to the positioning of the collection device. The occlusive dressing helps maintain the integrity of the chest tube insertion site and prevents infection.

Choice D reason: Emptying the chest tube collection chamber every shift is not a standard practice. The collection chamber should be monitored and emptied as needed based on the volume of drainage and the specific protocols of the healthcare facility. Regular monitoring is essential, but unnecessary emptying can disrupt the closed system and increase the risk of infection.

Choice A Reason:

Mobilizes secretions is correct. Expectorants work by thinning and loosening the mucus in the airways, making it easier to cough up and expel. This helps clear the respiratory tract of mucus and other secretions, making the cough more productive.

Choice B Reason:

Suppresses the urge to cough is incorrect. This describes the action of antitussives, not expectorants. Antitussives work by suppressing the cough reflex, which is different from the mechanism of expectorants.

Choice C Reason:

Reduces inflammation is incorrect. While reducing inflammation can help with respiratory symptoms, it is not the primary mechanism of action for expectorants. Anti-inflammatory medications are used to reduce inflammation.

Choice D Reason:

Dries mucous membranes is incorrect. Drying mucous membranes is typically the action of antihistamines, not expectorants. Expectorants aim to increase the moisture in mucus to make it less sticky and easier to expel.