A nurse is reinforcing teaching about a new prescription for tiotropium for a client with advanced COPD.
Which statement by the nurse accurately describes how this anticholinergic medication works?
It reduces inflammation in your lungs to prevent long-term damage.
It quickly opens your airways during an acute asthma attack or sudden shortness of breath.
It blocks certain receptors to prevent the muscles around your airways from tightening.
It helps to thin out the thick mucus in your lungs so you can cough it up more easily.
The Correct Answer is C
Choice A rationale
Tiotropium is not a corticosteroid and does not primarily function to reduce systemic or local airway inflammation. Corticosteroids like fluticasone are used for this purpose by inhibiting the release of inflammatory mediators and decreasing capillary permeability. Tiotropium is a long-acting muscarinic antagonist that focuses on the mechanical relaxation of smooth muscles rather than the underlying inflammatory cascade seen in chronic obstructive pulmonary disease or asthma. Therefore, this statement inaccurately describes its mechanism.
Choice B rationale
This medication is not a rescue inhaler and should never be used to treat acute bronchospasm or sudden shortness of breath. Short-acting beta-agonists like albuterol are indicated for immediate relief because they work rapidly. Tiotropium has a slow onset of action and is used for maintenance therapy to provide stable bronchodilation over a twenty-four hour period. Using it during an acute attack would be ineffective and potentially dangerous due to the delayed clinical response.
Choice C rationale
Tiotropium works by inhibiting M3 muscarinic receptors in the bronchial smooth muscles. By blocking the action of acetylcholine, it prevents the activation of the parasympathetic nervous system which otherwise causes bronchoconstriction. This leads to prolonged bronchodilation, which helps keep the airways open in clients with advanced chronic obstructive pulmonary disease. This mechanism reduces the resistance to airflow and helps alleviate symptoms like dyspnea and exercise intolerance by preventing the smooth muscles from tightening.
Choice D rationale
While managing secretions is important in chronic obstructive pulmonary disease, tiotropium does not possess mucolytic properties. It does not thin the viscosity of mucus or increase the effectiveness of the cough reflex. In fact, because it is an anticholinergic, it may actually cause a drying effect on the mucous membranes, leading to xerostomia or thickened secretions in some cases. Mucolytics such as acetylcysteine or guaifenesin are specifically designed to address the issues of thick pulmonary mucus.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Oxygen therapy, even at low flow rates like 2 liters per minute, has a significant drying effect on the delicate mucous membranes of the nasal passages. When the nasal mucosa becomes excessively dry, it can lead to crusting, irritation, and even minor bleeding. Adding humidification to the oxygen source introduces moisture into the inhaled gas, which helps to rehydrate the tissues, loosen dried secretions, and prevent further trauma to the nares.
Choice B rationale
Removing the nasal cannula is not a viable priority intervention because the patient was prescribed oxygen therapy for chronic obstructive pulmonary disease. This condition often results in chronic hypoxemia and hypercapnia, requiring a stable fraction of inspired oxygen to maintain adequate systemic oxygenation. Abruptly discontinuing the oxygen could lead to respiratory distress or a drop in arterial oxygen saturation levels, which would jeopardize the patient's respiratory stability and overall clinical safety.
Choice C rationale
Increasing the oxygen flow rate to 5 liters per minute would be counterproductive and potentially dangerous. Higher flow rates without humidification significantly increase the rate of evaporation from the nasal mucosa, which would exacerbate the crusting and bleeding already observed. Furthermore, in patients with chronic obstructive pulmonary disease who may rely on a hypoxic drive to breathe, excessive oxygen administration can suppress the respiratory drive, leading to dangerous carbon dioxide retention and respiratory acidosis.
Choice D rationale
Applying petroleum jelly or other oil-based products to the nostrils while a patient is receiving oxygen therapy is contraindicated due to a significant safety risk. Petroleum is a combustible substance, and in an oxygen-rich environment, it can pose a fire hazard or cause localized burns if an ignition source is present. Additionally, if petroleum jelly is inhaled into the lungs, it can lead to lipid pneumonia, which is a serious inflammatory condition of the lung parenchyma.
Correct Answer is A
Explanation
Choice A rationale
Assessment is always the initial step in the nursing process to establish a baseline. Auscultating the lung fields allows the nurse to identify the specific areas of congestion, atelectasis, or accumulation of secretions. This data is essential to determine which lobes require postural drainage and to evaluate the effectiveness of the treatment afterward. Physical assessment ensures that the intervention is targeted appropriately to the client's current physiological respiratory status and needs.
Choice B rationale
Percussion involves using cupped hands to create air pockets that vibrate the chest wall. While this mechanical action helps loosen thick secretions from the bronchial walls, it must only be performed after a thorough assessment and proper positioning. Starting this before auscultation would be premature as the nurse would not have confirmed the specific location of the mucus plugs. Vibration and percussion are active treatment phases that follow the initial diagnostic assessment and positioning steps.
Choice C rationale
Mouth care is an important comfort measure, especially after postural drainage, because the client may expectorate foul-smelling or bad-tasting sputum. However, providing oral hygiene does not take priority over the clinical assessment or the physical mobilization of secretions. It is generally considered a post-procedure intervention to promote hygiene and patient comfort. Prioritizing mouth care first would delay the necessary therapeutic clearing of the airway in a client with active pneumonia and congestion.
Choice D rationale
Postural drainage uses gravity to facilitate the movement of secretions from peripheral airways into the central nodes for expectoration. While positioning the affected lung area above the trachea is a core component of the procedure, it must be guided by the findings of the lung auscultation. The nurse cannot correctly position the client without first knowing which specific lung segments are involved. Therefore, positioning is the second logical step after the initial respiratory assessment is complete.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.