The nurse is caring for a client with emphysema who is mildly dyspneic after ambulation. Which instruction should the nurse provide to the client to improve gas exchange?
Draw air in through the nose and exhale slowly through pursed lips.
Lay down on each side with knees bent and breathe from the abdomen.
Increase breathing rate for a full 30 seconds.
Raise hands above the head to expand the diaphragm.
The Correct Answer is A
Rationale for Choice A:
Pursed-lip breathing:
Creates back pressure in the airways, which helps to keep them open longer during exhalation.
Slows down the breathing rate, allowing for more complete exhalation and better emptying of the lungs. Prevents air trapping, which can worsen shortness of breath.
Promotes relaxation and reduces anxiety, which can also help to improve breathing.
Rationale for Choice B:
Side-lying position with knees bent:
May not be the most effective position for improving gas exchange in a client with emphysema. Could potentially restrict chest expansion and make breathing more difficult.
May not be comfortable for all clients.
Rationale for Choice C:
Increasing breathing rate:
Can lead to hyperventilation, which can worsen shortness of breath and anxiety. Can also cause fatigue and muscle exhaustion.
Rationale for Choice D:
Raising hands above the head:
Does not significantly expand the diaphragm or improve gas exchange. May actually make breathing more difficult for some clients.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice B rationale:
Isoniazid's Mechanism of Action:
It targets and inhibits the synthesis of mycolic acids, which are essential components of the cell wall of Mycobacterium tuberculosis, the bacteria that cause tuberculosis.
By disrupting cell wall formation, isoniazid prevents bacterial growth and multiplication, leading to the suppression and eventual eradication of the infection.
Clinical Manifestations of Active TB:
Persistent cough, often productive of sputum (phlegm), is a hallmark symptom of TB. The sputum may contain blood or have a rusty-colored appearance.
Other common symptoms include fever, night sweats, fatigue, weight loss, and chest pain. How Isoniazid Reduces Cough and Sputum:
As isoniazid effectively kills the TB bacteria, the inflammatory process within the lungs subsides.
This leads to a gradual decrease in the production of sputum, which is a direct result of the inflammatory response. Consequently, the frequency and severity of coughing episodes also diminish.
Monitoring Treatment Response:
Regular sputum smears and cultures are essential to assess the response to treatment.
A positive sputum smear indicates the presence of live TB bacteria, while a positive culture confirms their growth in the laboratory.
A gradual decrease in the number of bacteria seen on sputum smears, followed by negative cultures, signals a favorable response to treatment.
Timeframe for Improvement:
It's important to note that clinical improvement, including a reduction in cough and sputum, may not be immediately evident. It typically takes several weeks of consistent isoniazid therapy to achieve noticeable results.
Therefore, adherence to the prescribed treatment regimen is crucial for successful TB eradication. Addressing Other Choices:
Choice A: Decreased appetite and weight loss are often associated with active TB due to systemic inflammation and nutritional deficiencies. While isoniazid treatment may indirectly improve appetite and weight gain over time, these are not primary indicators of its effectiveness in suppressing the TB infection itself.
Choice C: Vertigo and tinnitus are potential side effects of isoniazid, but they do not reflect its efficacy in treating TB.
Choice D: A positive sputum smear and culture would indicate ongoing TB infection and a lack of response to treatment.
Correct Answer is A
Explanation
Choice A rationale:
Hemoglobin A1C (HbA1C) is a blood test that reflects a person's average blood glucose levels over the past 2-3 months. It's considered the gold standard for diagnosing and monitoring diabetes.
An HbA1C level of 8.29% is significantly elevated above the reference range of 4-5.99%, indicating a high probability of diabetes.
The patient's HbA1C has also increased from 7.59% three months ago, suggesting a worsening of glycemic control.
Diabetes mellitus is a chronic metabolic disorder characterized by elevated blood glucose levels due to impaired insulin production or action, or both.
Common symptoms of diabetes include increased thirst, frequent urination, fatigue, blurred vision, and slow-healing wounds.
Early diagnosis and treatment of diabetes are crucial to prevent complications such as heart disease, stroke, kidney disease, nerve damage, and vision loss.
Choice B rationale:
Hypoglycemia refers to abnormally low blood glucose levels, typically below 70 mg/dL. It's often caused by excessive insulin or medication, missed meals, or strenuous exercise.
The patient's HbA1C level of 8.29% does not support a diagnosis of hypoglycemia.
Choice C rationale:
Hyperglycemia refers to abnormally high blood glucose levels, typically above 180 mg/dL. It can be caused by diabetes, stress, infection, or certain medications.
While the patient's HbA1C level does indicate hyperglycemia, it's specifically the pattern of elevated HbA1C over time that points to a diagnosis of diabetes mellitus, rather than transient hyperglycemia.
Choice D rationale:
Prediabetes is a condition where blood glucose levels are higher than normal, but not high enough to be classified as diabetes. People with prediabetes are at increased risk of developing diabetes.
The patient's HbA1C level of 8.29% is above the threshold for prediabetes, which is typically 5.7-6.4%.
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