Nokea
The nasal conchae epithelial surface serves to:
- A. Warm and moisten inhaled air, via air turbulence.
- B. Help filter dust and insects from the inhaled air
- C. Recapture moisture from exhaled air to preserve fluid.
- D. All of the above are correct.
Correct Answer: D
Rationale: Rationale: The nasal conchae increase surface area, causing air turbulence to warm, moisten, and filter inhaled air. This helps in preventing respiratory issues. Choice A is correct as it explains the primary function of the conchae. Choice B is incorrect as the primary function is not filtering. Choice C is incorrect as the conchae primarily warm and moisten inhaled air rather than recapture moisture from exhaled air. Overall, choice D is correct as it encompasses all the functions of the nasal conchae.
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Hemoglobin gives up O2 when
- A. carbon dioxide concentrations are high
- B. body temperature is lowered.
- C. pH values are high
- D. CO2 concentrations are low
Correct Answer: A
Rationale: The correct answer is A: carbon dioxide concentrations are high. When carbon dioxide levels are high, it leads to a decrease in blood pH, triggering hemoglobin to release oxygen more readily through the Bohr effect. This is a physiological response to maintain homeostasis. The other choices (B, C, D) do not directly affect the release of oxygen from hemoglobin.
The common drugs used against TB is
- A. Para amino salicylic acid (PAS)
- B. Ethambutol
- C. Steptomycin
- D. All these
Correct Answer: D
Rationale: The correct answer is D, "All these." PAS, Ethambutol, and Streptomycin are all common drugs used against TB. PAS inhibits bacterial folic acid synthesis, Ethambutol inhibits cell wall synthesis, and Streptomycin inhibits protein synthesis. Using a combination of these drugs helps to target different aspects of TB bacteria, reducing the likelihood of resistance development. Therefore, all of these drugs are essential in the treatment of TB, making choice D the correct answer.
A nurse in a family practice clinic is preparing discharge instructions for a client reporting facial pain that is worse when bending over tenderness across the cheeks and postnasal discharge. What instruction will be most helpful?
- A. Ice packs may help with the facial pain.
- B. Limit fluids to dry out your sinuses.
- C. Try warm, moist heat packs on your face.
- D. We will schedule a computed tomography scan this week.
Correct Answer: C
Rationale: The correct answer is C: Try warm, moist heat packs on your face. Warm, moist heat can help relieve facial pain and sinus pressure by promoting sinus drainage and reducing inflammation. Ice packs may not be as effective for this type of pain. Limiting fluids can worsen symptoms by drying out the sinuses. Scheduling a CT scan is not necessary at this point as the symptoms described are indicative of sinusitis, which can often be managed with conservative measures like warm compresses.
Which nursing activity is most important to include in the client's care?
- A. Perform postural drainage and chest physiotherapy every 4 hours.
- B. Discuss client's feelings about the need for a living will.
- C. Place in private room to decrease the risk of further infection.
- D. Plan activities to allow at least 8 hours of uninterrupted sleep.
Correct Answer: A
Rationale: The correct answer is A. Postural drainage and chest physiotherapy are critical for clearing secretions and improving lung function in cystic fibrosis. Discussing a living will (B), isolation (C), and sleep planning (D) are less urgent.
A male adult patient hospitalized for treatment of a pulmonary embolism develops respiratory alkalosis. Which clinical findings commonly accompany respiratory alkalosis?
- A. Nausea or vomiting
- B. Abdominal pain or diarrhea
- C. Hallucinations or tinnitus
- D. Lightheadedness or paresthesia
Correct Answer: D
Rationale: The correct answer is D: Lightheadedness or paresthesia. Respiratory alkalosis is caused by hyperventilation, leading to decreased carbon dioxide levels and an increase in pH. This can result in symptoms such as lightheadedness (from decreased cerebral blood flow) and paresthesia (tingling sensations due to changes in calcium ionization). Choices A, B, and C are incorrect as they are not typically associated with respiratory alkalosis. Nausea, vomiting, abdominal pain, and diarrhea are more commonly seen in metabolic alkalosis, while hallucinations and tinnitus are not typical symptoms of respiratory alkalosis.