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Hypercapnia. Hypercapnia refers to an excessive amount of carbon dioxide in the bloodstream, typically due to hypoventilation.

Dyspnea. Dyspnea refers to a subjective sensation of difficulty or uncomfortable breathing.

Hypoxia. Hypoxia refers to a deficiency of oxygen in the tissues, not specifically in the blood.

Choose a wool blanket when using oxygen. Wool and synthetic fabrics can generate static electricity, which is a fire hazard in the presence of oxygen.

Keep oxygen tanks 4 feet away from an electric stove. Oxygen tanks should be kept at least 8 to 10 feet away from heat sources, including electric stoves.

Use petroleum-based ointments to moisturize lips. Petroleum-based products are flammable and should be avoided when using oxygen. Water-based moisturizers are safer.

Endotracheal tube. An endotracheal tube is invasive and used for patients who require mechanical ventilation, not for simple airway maintenance.

Partial rebreather oxygen mask. A partial rebreather mask is used to deliver oxygen, not to maintain airway patency.

Tracheostomy. A tracheostomy is a surgical procedure for long-term airway management and is unnecessary in this scenario.

Turning on suction to 35 cm. Suction levels are typically set between 10 to 20 cm of water pressure. 35 cm is excessive and may cause lung tissue damage.

Keeping the system at the level of the patient's chest. The drainage system should always be kept below the level of the chest to promote gravity drainage and prevent backflow.

Looping the tubing between the mattress and the bed rail to minimize length. Tubing should not be looped or kinked, as this can obstruct drainage and compromise system function.

The reservoir bag on a nonrebreather mask should collapse with exhalation. The reservoir bag should not completely collapse. If it does, the oxygen flow may be inadequate.

A nonrebreather mask dries a client's mucous membranes. While high-flow oxygen delivery systems can dry mucous membranes, this is not specific to non rebreather masks.

Use a non rebreather mask to deliver low-flow oxygen. Non rebreather masks are designed to deliver high concentrations of oxygen (typically 60% to 100%).

"Repeat your breathing exercise every 2 hrs." Repeating breathing exercises should be done a couple of times every hour to help prevent postoperative complications such as atelectasis and pneumonia.

"Inhale through your mouth." Clients should inhale through their nose to filter, warm, and humidify the air.

"Exhale through your nose." Clients are generally advised to exhale through pursed lips to create positive airway pressure and prevent airway collapse.

Trendelenburg. This position involves tilting the patient with the head lower than the body and can worsen respiratory distress.

Supine. The supine position can impair lung expansion and worsen respiratory distress.

Low-Fowler's Position. This position may provide minimal respiratory relief but is not as effective as the tripod position.

Sternum. Percussion over the sternum is ineffective and may cause discomfort.

Midaxillary line on the rib cage. This area is not typically targeted for percussion.

Spine between the scapulae. Percussion on the spine is not advisable due to the potential for discomfort and ineffectiveness. The area between the scapulae is also less effective for loosening mucus compared to the thorax.

Secure the tracheostomy ties so that fingers cannot fit between the ties and the neck. The ties should be secure but loose enough to fit one finger between the ties and the neck to prevent skin breakdown and maintain comfort.

Suction for 20 seconds. Suctioning for 20 seconds is too long and may cause hypoxia. Suction should not exceed 5 to 10 seconds.

Clean secretions from the tube using hydrogen peroxide. Hydrogen peroxide can irritate the delicate tissues and is not recommended. Saline or prescribed cleaning agents are preferred.