Nokea
Distribution of a drug to various tissues depends on the amount of cardiac output to each type of tissue. Which tissue would receive the highest amount of cardiac output and thus the highest amount of a drug?
- A. skin
- B. adipose tissue
- C. skeletal muscle
- D. myocardium
Correct Answer: D
Rationale: The correct answer is 'myocardium.' Highly perfused tissues include vital organs like the brain, heart, kidneys, adrenal glands, and liver. The myocardium, being heart muscle, receives the highest amount of cardiac output and thus the highest amount of a drug. Choices A, B, and C are incorrect because the skin and adipose tissue are poorly perfused, while skeletal muscle is less perfused compared to vital organs like the myocardium.
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Which isolation procedure will be followed for secretions and blood?
- A. Respiratory Isolation
- B. Standard Precautions
- C. Contact Isolation
- D. Droplet Isolation
Correct Answer: B
Rationale: The correct answer is Standard Precautions. Standard precautions are taken in all situations for all clients and involve all body secretions except sweat. They are designed to reduce the rate of transmission of microbes from one host to another or one source to another. Respiratory Isolation (Choice A) is used for diseases transmitted by airborne particles, not secretions and blood. Contact Isolation (Choice C) is for clients known or suspected to be infected with microorganisms that can be transmitted by direct or indirect contact. Droplet Isolation (Choice D) is used for diseases transmitted by large respiratory droplets expelled during coughing, sneezing, talking, or procedures.
Why is padding on a restraint helpful?
- A. To distribute pressure so that bony prominences do not receive pressure when a client pulls against the restraints.
- B. To help the client feel more secure.
- C. To keep infection and wounds at bay.
- D. To keep restraints in place.
Correct Answer: A
Rationale: Padding on a restraint helps distribute pressure to prevent bony prominences from bearing excessive pressure when a client pulls against the restraints. This is crucial to avoid tissue damage caused by ischemia. The correct answer focuses on the physiological benefit of padding in reducing pressure on vulnerable areas to prevent harm. Choice B is incorrect as the primary purpose of padding is not emotional comfort but preventing physical harm. Choice C is incorrect as while padding can indirectly help prevent infection and wounds by reducing pressure, its primary function is pressure distribution. Choice D is incorrect as the main purpose of padding is not to keep the restraints in place but to protect the client's skin and tissues from pressure-related injuries.
When a physician removes a chest tube, which type of dressing is recommended to be placed over the site?
- A. transparent dressing
- B. colloidal dressing
- C. petrolatum gauze
- D. nonadherent dressing
Correct Answer: C
Rationale: Petrolatum gauze is recommended to be placed over the site when a physician removes a chest tube because it forms an airtight seal, helping prevent air from entering the pleural space. This airtight seal is crucial to avoid complications such as a pneumothorax. Transparent dressing is not ideal for this purpose as it may not provide a sufficient seal due to its design. Colloidal dressing and nonadherent dressing are also not suitable for chest tube removal sites as they do not offer the same level of protection against air leakage and may not provide the necessary sealing properties.
Which of the following statements describes the purpose of client restraint?
- A. Restraints are a nursing measure used to maintain client control.
- B. Restraints are an emergency intervention taken as a last resort to protect a client from imminent danger.
- C. Restraints are a therapeutic measure designed to positively reinforce client behavior.
- D. Restraints are an emergency measure that can only be taken by a nurse under the direct supervision of a physician.
Correct Answer: B
Rationale: The correct answer is B. Restraints are used as an emergency intervention when all other options to protect a client from imminent danger have been exhausted. Restraints should only be used as a last resort to ensure the safety of the client and others. Choices A, C, and D are incorrect because restraints are not used to maintain control, reinforce behavior, or are exclusively taken under direct physician supervision. It is crucial to remember that restraint use should always be based on careful assessment, documentation, and adherence to legal and ethical guidelines.
When a client needs oxygen therapy, what is the highest flow rate that oxygen can be delivered via nasal cannula?
- A. 2 liters/minute
- B. 4 liters/minute
- C. 6 liters/minute
- D. 8 liters/minute
Correct Answer: C
Rationale: The correct answer is 6 liters/minute. When a client needs oxygen therapy, the highest flow rate that oxygen can be delivered via nasal cannula is 6 liters/minute. Higher flow rates must be delivered by a mask. Choices A, B, and D are incorrect because they suggest flow rates that exceed what can be effectively delivered through a nasal cannula.