Nokea
Exhaling into a paper bag and rebreathing the exhaled air would be expected to
- A. alert the brain.
- B. increase the breathing rate.
- C. stimulate the carotid bodies.
- D. b and c only
Correct Answer: D
Rationale: Exhaling into a paper bag and rebreathing the exhaled air leads to an increase in carbon dioxide levels in the body. This increase stimulates the carotid bodies, which detect changes in blood chemistry, leading to an increase in breathing rate. This process does not directly alert the brain, as high carbon dioxide levels typically cause drowsiness rather than alertness. Therefore, the correct answer is D, as it correctly identifies the effects of rebreathing on both breathing rate and carotid body stimulation. Choice A is incorrect because rebreathing does not directly alert the brain. Choice B is incorrect as rebreathing actually decreases the need for increased breathing rate initially. Choice C alone is incorrect as it does not address the effect on breathing rate.
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A nurse cares for a client who had a bronchoscopy 2 hours ago. The client asks for a drink of water. Which action should the nurse take next?
- A. Call the physician and request a prescription for food and water.
- B. Provide the client with ice chips instead of a drink of water.
- C. Assess the client's gag reflex before giving any food or water.
- D. Let the client have a small sip to see whether he or she can swallow.
Correct Answer: C
Rationale: Correct Answer: C
Rationale:
1. Assessing the client's gag reflex is crucial after a bronchoscopy to prevent aspiration.
2. Gag reflex helps protect the airway from foreign substances entering the lungs.
3. Providing food or water without assessing the gag reflex can lead to aspiration pneumonia.
4. It is essential to ensure the client's safety before allowing any intake post-bronchoscopy.
Summary:
A: Calling the physician for a prescription is not necessary at this immediate stage.
B: Ice chips may still pose a risk if the client cannot protect their airway.
D: Allowing a sip without assessing gag reflex may lead to aspiration.
Oxygenated blood from lungs is carried to heart by
- A. Pulmonary artery
- B. Pulmonary vein
- C. Coronary vein
- D. Pre-cavals
Correct Answer: B
Rationale: The correct answer is B: Pulmonary vein. Oxygenated blood from the lungs is carried to the heart by the pulmonary vein. After receiving oxygen in the lungs, blood returns to the heart via the pulmonary veins to be pumped to the rest of the body. The pulmonary artery (A) carries deoxygenated blood from the heart to the lungs. The coronary vein (C) drains deoxygenated blood from the heart muscle. Pre-cavals (D) is not a term used in the context of blood circulation.
You are supervising a student nurse who is performing tracheostomy care for a client. For which action should you intervene?
- A. The student nurse suctions the tracheostomy tube prior to performing tracheostomy care.
- B. The student nurse removes old dressings and cleans off excess secretions.
- C. The student nurse removes the inner cannula and cleans using universal precautions.
- D. The student nurse replaces the inner cannula and cleans the stoma site.
Correct Answer: A
Rationale: The correct answer is A. Suctioning prior to tracheostomy care is incorrect because it increases the risk of introducing infection. Removing old dressings and cleaning secretions (B), removing and cleaning the inner cannula (C), and replacing the inner cannula and cleaning the stoma site (D) are standard steps in tracheostomy care.
The charge nurse on a medical unit is preparing to admit several "clients" who have possible pandemic flu during a preparedness drill. What action by the nurse is best?
- A. Admit the "clients" on Contact Precautions.
- B. Inquire as to recent travel outside the United States.
- C. Do not allow pregnant caregivers to care for these "clients."
- D. Place the "clients" on enhanced Droplet Precautions.
Correct Answer: B
Rationale: The correct answer is B because in a pandemic flu scenario, it is crucial to inquire about recent travel history to identify potential exposure risks. This information can help determine if the "clients" have been in high-risk areas or in contact with infected individuals. This step is essential for implementing appropriate infection control measures and preventing the spread of the virus.
Choice A is incorrect because Contact Precautions are not typically used for airborne infections like the flu. Choice C is incorrect as it discriminates against pregnant caregivers without any evidence-based rationale. Choice D is incorrect because enhanced Droplet Precautions are more suitable for diseases spread through respiratory droplets, not necessarily for pandemic flu with potential airborne transmission.
Pneumotaxic center is
- A. Inhibitory
- B. Accelatory
- C. Activating
- D. None of these
Correct Answer: A
Rationale: The correct answer is A: Inhibitory. The pneumotaxic center is located in the upper pons and functions to inhibit inspiration, preventing overinflation of the lungs. This helps regulate the respiratory rate and depth. The other choices are incorrect because the pneumotaxic center does not accelerate or activate breathing directly. It exerts its influence by inhibiting the inspiratory neurons in the medulla, thereby controlling the duration and frequency of inspiration. Choice D is incorrect as the pneumotaxic center does have a specific inhibitory function in the respiratory control system.