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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Free Nursing Study Resources

Correct Answer is ["35"]

Explanation

Here's the calculation:

Total volume of enteral nutrition (mL): 840 mL

Infusion time (hours): 24 hours

Flow rate (mL/hr) = Total volume (mL) / Infusion time (hours)

Flow rate (mL/hr) = 840 mL / 24 hours = 35 mL/hr (round to nearest whole number as requested)

Therefore, the nurse should program the pump to deliver 35 mL/hr.

A. By blocking the effects of histamine in the body B. By reducing inflammation in the body C. By increasing the production of histamine in the body D. By stimulating the immune system

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."

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A patient with COPD would be expected to have

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is ["35"]

Explanation

How does an antihistamine work?

Correct Answer is A

Explanation

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A patient with COPD would be expected to have

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