A patient with COPD would be expected to have

loss of protective respiratory mechanisms due to prolonged irritation or damage.

localized swelling and Inflammation within the lungs.

an acute viral Infection of the respiratory tract.

inflammation and swelling of the sinus membranes over a prolonged period.

Answer and Explanation

The Correct Answer is A

A) Loss of protective respiratory mechanisms due to prolonged irritation or damage:
Individuals with COPD often experience a progressive loss of protective respiratory mechanisms over time. Chronic exposure to irritants such as cigarette smoke leads to inflammation, structural changes in the airways, and destruction of lung tissue, impairing the body's ability to clear mucus, trap foreign particles, and maintain normal lung function. This loss of protective mechanisms contributes to the hallmark symptoms of COPD, including airflow limitation, chronic cough, and increased susceptibility to respiratory infections.

B) Localized swelling and inflammation within the lungs:
While inflammation is a hallmark feature of COPD, it typically manifests as widespread inflammation throughout the lungs rather than localized swelling. In COPD, chronic exposure to irritants leads to a systemic inflammatory response that affects the entire respiratory tract, including the bronchi and alveoli. This inflammation contributes to airway obstruction, mucus hypersecretion, and the development of respiratory symptoms.

C) An acute viral infection of the respiratory tract:
While individuals with COPD are at increased risk of respiratory infections, including viral infections such as influenza and respiratory syncytial virus (RSV), COPD itself is a chronic, progressive respiratory condition characterized by persistent airflow limitation. Acute viral infections may exacerbate COPD symptoms and lead to worsening respiratory function, but they are not inherent features of the disease itself.

D) Inflammation and swelling of the sinus membranes over a prolonged period:
Sinus inflammation and swelling, known as sinusitis, are not typically considered primary features of COPD. While individuals with COPD may experience comorbid conditions such as chronic rhinosinusitis, which can contribute to respiratory symptoms and exacerbations, sinus inflammation is not a defining characteristic of the disease.

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Correct Answer is A

Explanation

A) By blocking the effects of histamine in the body:
Antihistamines are pharmacological agents that work by antagonizing the effects of histamine, a chemical mediator released by mast cells and basophils in response to allergens or other triggers. Histamine contributes to various allergic symptoms such as itching, sneezing, nasal congestion, and watery eyes. Antihistamines exert their effects by competitively binding to histamine receptors (specifically H1 receptors) on target cells, thereby preventing histamine from binding and exerting its physiological effects. By blocking histamine receptors, antihistamines inhibit the action of histamine, leading to the alleviation of allergy symptoms.

B) By reducing inflammation in the body:
While some medications, such as corticosteroids, exert anti-inflammatory effects by suppressing the immune response and inhibiting the production of inflammatory mediators, antihistamines primarily target histamine receptors and do not directly reduce inflammation. Although histamine release can contribute to inflammation, antihistamines mitigate allergic symptoms primarily by blocking the action of histamine rather than by directly reducing inflammation.

C) By increasing the production of histamine in the body:
This statement is inaccurate. Antihistamines do not increase the production of histamine; instead, they counteract the effects of histamine by blocking its activity at receptor sites. The primary mechanism of action of antihistamines involves blocking histamine receptors to prevent histamine from exerting its physiological effects.

D) By stimulating the immune system:
Antihistamines do not stimulate the immune system. Instead, they act as antagonists to histamine receptors, thereby inhibiting histamine-induced responses. While histamine is involved in immune responses and allergic reactions, antihistamines do not directly modulate immune function or stimulate immune activity. Their primary role is to alleviate allergy symptoms by blocking the effects of histamine."

A. postoperative patients. B. asthma patients. C. patients with a dry, irritating cough. D. COPD patients who tire easily.

Correct Answer is C

Explanation

A) Postoperative patients:
Antitussives may be used postoperatively to alleviate coughing, but they are not necessarily best used in this population. Postoperative patients may have different needs based on their surgical procedure and overall health status.

B) Asthma patients:
Antitussives are generally not recommended for asthma patients because they can suppress the cough reflex, which may be important for clearing mucus and irritants from the airways. Asthma patients often have productive coughs associated with bronchial inflammation and excess mucus production.

C) Patients with a dry, irritating cough:
Antitussives are most effective for patients with a dry, irritating cough, as they help suppress the cough reflex and provide relief from coughing without producing sputum.

D) COPD patients who tire easily:
While antitussives may provide symptomatic relief for some COPD patients with a dry, nonproductive cough, they are not necessarily best used in this population. COPD patients may have varied responses to antitussive therapy, and treatment decisions should be individualized based on their overall condition and symptoms."

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A patient with COPD would be expected to have

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Naxlex Comprehensive Predictor Exams

How does an antihistamine work?

Correct Answer is A

Explanation

Antitussives are useful in blocking the cough reflex and preserving the energy associated with prolonged, nonproductive coughing. Antitussives are best used with

Correct Answer is C

Explanation

A nurse is teaching a client who has a new prescription for captopril. Which of the following instructions should the nurse include in the teaching?

A nurse is providing teaching to a client who has hypertension and a new prescription for verapamil. Which of the following beverages should the nurse tell the client to avoid while taking this medication?

A nurse is teaching a newly licensed nurse about orthostatic hypotension. Which of the following information should the nurse include?

A nurse is educating a client about the sympathetic nervous system. Which of the following statements is correct?

A nurse is reviewing blood pressure classifications with a group of nurses at an in-service meeting. Which of the following should the nurse include as a risk factor for the development of hypertension? (Select All that Apply.)

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The client has been ordered a nonselective beta-blocking agent called propranolol, PO. Propranolol is used in the treatment of which disorders (Select All that Apply.)

A nurse is assessing a clie”t prior to administering atenolol. Which of the following findings should prompt the nurse to withhold the medication?