Nokea
A client must use a non-rebreathing oxygen mask. Which of the following statements is true regarding this type of mask?
- A. A non-rebreather can provide an FiO2 of 40%.
- B. A client should breathe through his or her mouth when using a non-rebreather.
- C. A non-rebreather offers a reservoir from which the client inhales.
- D. The mask of a non-rebreather should be changed every 3 hours.
Correct Answer: A
Rationale: A non-rebreather mask is used for supplemental oxygen delivery for clients experiencing breathing difficulties. The non-rebreather mask includes a one-way valve that allows exhaled air to escape, preventing the rebreathing of carbon dioxide. The client inhales oxygenated air from a reservoir bag attached to the mask, providing high-concentration oxygen therapy. A non-rebreather mask can deliver FiO2 levels of up to 90%, making it an effective intervention for clients requiring high oxygen concentrations. Therefore, the statement that 'A non-rebreather can provide an FiO2 of 40%' is correct. Choices B, C, and D are incorrect because clients should breathe through their nose and mouth, the mask offers a reservoir for inhaling oxygen, and the mask should be assessed and potentially replaced if soiled or damaged, not routinely changed every 3 hours.
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A patient who has been diagnosed with vasospastic disorder (Raynaud's disease) complains of cold and stiffness in the fingers. Which of the following descriptions is most likely to fit the patient?
- A. An adolescent male
- B. An elderly woman
- C. A young woman
- D. An elderly man
Correct Answer: C
Rationale: The correct answer is 'A young woman.' Raynaud's disease is most common in young women and is often associated with rheumatologic disorders like lupus and rheumatoid arthritis. This disorder involves vasospasm of the arteries, leading to reduced blood flow to the fingers and toes. Typically, Raynaud's affects the fingers, and in some cases, it can affect the toes. Only rarely does it involve other body parts such as the nose, ears, nipples, and lips. Choices B, C, and D are less likely as Raynaud's disease predominantly affects young women, although it can occur in other demographic groups as well.
A child has recently been diagnosed with Duchenne muscular dystrophy (DMD). The parents are receiving genetic counseling prior to planning another pregnancy. Which of the following statements includes the most accurate information?
- A. Duchenne is an X-linked recessive disorder, so daughters have a 50% chance of being carriers and sons a 50% chance of developing the disease.
- B. Duchenne is an X-linked recessive disorder, so both daughters and sons have a 50% chance of developing the disease.
- C. Each child has a 1 in 4 (25%) chance of developing the disorder.
- D. Sons only have a 1 in 4 (25%) chance of developing the disorder.
Correct Answer: A
Rationale: The correct answer is that Duchenne is an X-linked recessive disorder, meaning the affected gene is located on one of the two X chromosomes of a female carrier. If a son receives the X chromosome bearing the gene, he will develop the disease, giving him a 50% chance of being affected. Daughters, on the other hand, are not affected by Duchenne but have a 50% chance of being carriers since they inherit one copy of the defective gene from the mother. The other X chromosome is inherited from the father, who cannot be a carrier. Therefore, choice A is accurate. Choice B is incorrect because daughters do not develop the disease, and sons have a 50% chance of developing, not both having a 50% chance. Choice C is incorrect as it does not consider the X-linked inheritance pattern of Duchenne. Choice D is inaccurate as it incorrectly states that only sons have a 25% chance of developing the disorder, omitting the carrier status of daughters.
A patient in the cardiac unit is concerned about the risk factors associated with atherosclerosis. Which of the following are hereditary risk factors for developing atherosclerosis?
- A. Family history of heart disease
- B. Overweight
- C. Smoking
- D. Age
Correct Answer: A
Rationale: A family history of heart disease is an inherited risk factor for developing atherosclerosis. This factor is not modifiable through lifestyle changes. Studies have shown that having a first-degree relative with heart disease significantly increases the individual's risk of developing atherosclerosis. Overweight, smoking, and age are not hereditary risk factors for atherosclerosis. Overweight and smoking are lifestyle-related risk factors, while age is a non-modifiable risk factor that increases with time but is not directly inherited.
If you are caring for a patient of the Hindu culture, what may you anticipate regarding visitors?
- A. Limited visitors, respectful of privacy
- B. Family members only
- C. Large number of visitors/community support
- D. None of the above
Correct Answer: C
Rationale: In Hindu culture, there is a strong sense of community and support. It is common for a patient to receive a large number of visitors, indicative of the community coming together to provide emotional and practical support. This support network is crucial for the patient's well-being and healing process. Option A, limited visitors, is incorrect as the Hindu culture values community involvement. Option B, family members only, is incorrect as the support network extends beyond just family. Option D, none of the above, is incorrect as the Hindu culture typically involves community support and a significant number of visitors.
A client is discharged following hospitalization for congestive heart failure. The nurse teaching the family suggests they encourage the client to rest frequently in which of the following positions?
- A. High Fowler's
- B. Supine
- C. Left lateral
- D. Low Fowler's
Correct Answer: A
Rationale: The correct answer is "High Fowler's" position. Sitting in a chair or resting in a bed in a high Fowler's position decreases the cardiac workload and facilitates breathing. This position helps reduce the work of breathing and promotes optimal lung expansion, making it easier for the client to breathe. Supine position (choice B) is lying flat on the back and may not be ideal for clients with congestive heart failure as it can increase pressure on the heart. Left lateral position (choice C) is commonly used for promoting circulation in clients with certain conditions but is not the most appropriate for congestive heart failure. Low Fowler's position (choice D) is not recommended as it does not provide the same benefits in terms of reducing cardiac workload and easing breathing as the high Fowler's position.