Which time would be ideal for the LPN/LVN to collect a sputum specimen?
At bedtime
In the morning
After meals
After start of antibiotics
The Correct Answer is B
B. Morning is considered the ideal time for collecting a sputum specimen. Overnight, mucus accumulates in the respiratory tract because the patient is less active and not clearing their throat or coughing as much. This means that the mucus is more concentrated and has had time to build up, providing a more substantial and representative sample of what is in the lungs.
A. Collecting a sputum specimen at bedtime is generally not ideal. By the end of the day, the patient’s respiratory tract might have cleared some of the accumulated mucus naturally through coughing or other activities.
C. Collecting a sputum specimen after meals is not recommended. Eating can introduce food particles and bacteria from the mouth into the sputum, contaminating the sample.
D. Starting antibiotics before collecting a sputum specimen can alter the bacterial flora present in the respiratory tract. This can lead to a false-negative result or an inaccurate representation of the pathogens causing the infection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Asthma is a chronic respiratory condition characterized by inflammation and hyperresponsiveness of the airways. This inflammation leads to bronchoconstriction, causing symptoms like wheezing, shortness of breath, chest tightness, and coughing. This description accurately captures the primary pathological features of asthma.
B. Fluid in the lungs, also known as pulmonary edema, is not a characteristic of asthma. Pulmonary edema is usually associated with conditions such as heart failure or acute respiratory distress syndrome (ARDS), not asthma.
C. Airway stretching and nonfunctionality are not characteristics of asthma. Conditions like bronchiectasis involve permanent dilation and damage to the airways, leading to chronic infections and impaired clearance of mucus, but this is different from asthma.
D. Asthma is not primarily caused by an infection, although infections can trigger asthma exacerbations. The primary issue in asthma is chronic inflammation and hyperresponsiveness of the airways, which are not caused by a low-grade infection but by a combination of genetic and environmental factors.
Correct Answer is A
Explanation
A. Sucralfate works by forming a protective barrier over the ulcer site. It adheres to the ulcer, shielding it from the harmful effects of gastric acid, pepsin, and bile salts. This protection allows the ulcer to heal by preventing further irritation and damage.
B. Medications that prevent gastric acid secretion are typically proton pump inhibitors (PPIs) or H2 receptor antagonists. Sucralfate does not reduce or inhibit the production of gastric acid; instead, it protects the ulcer from the acid already present.
C. Antacids are the type of medication that neutralize gastric acid. Sucralfate does not neutralize acid; it acts locally at the ulcer site to create a protective coating.
D. Antibiotics are used to kill Helicobacter pylori, the bacteria often responsible for causing peptic ulcers. Sucralfate does not have antibacterial properties and does not target or eliminate bacteria.
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