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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The mother of a 2-month-old infant brings the child to the clinic for a well-baby check. She is concerned because she feels only one testis in the scrotal sac. Which of the following statements about the undescended testis is the most accurate?
- A. Normally, the testes descend by one year of age.
- B. The infant will likely require surgical intervention.
- C. The infant likely has only one testis.
- D. Normally, the testes are descended by birth.
Correct Answer: A
Rationale: The correct answer is that normally, the testes descend by one year of age. In young infants, it is common for the testes to retract into the inguinal canal when the environment is cold or the cremasteric reflex is stimulated. The exam should be done in a warm room with warm hands. It is most likely that both testes are present and will descend by a year. Option B is incorrect as not all cases of undescended testes require surgical intervention. Option C is incorrect because feeling only one testis does not necessarily mean the infant only has one testis. Option D is inaccurate as the testes do not normally descend by birth, but rather by one year of age. If the testes do not descend by one year, a full assessment will be needed to determine the appropriate treatment.
During an adolescent examination, the nurse asks a 13-year-old female to bend forward at the waist with arms hanging freely. Which of the following assessments is the nurse most likely conducting?
- A. Spinal flexibility
- B. Leg length disparity
- C. Hypostatic blood pressure
- D. Scoliosis
Correct Answer: D
Rationale: The correct answer is scoliosis. During the assessment for scoliosis, the nurse asks the adolescent to bend forward at the waist with arms hanging freely to observe for any lateral deviation of the spine, uneven rib levels, or asymmetry. This assessment is a routine part of an adolescent examination, especially in females, as scoliosis is more common in this population. Choices A, B, and C are incorrect. Spinal flexibility is usually assessed through different maneuvers, leg length disparity is evaluated by measuring the length of the legs, and hypostatic blood pressure refers to a decrease in blood pressure due to immobility.
The client is receiving discharge teaching seven (7) days post myocardial infarction and inquires why he must wait six (6) weeks before engaging in sexual intercourse. What is the best response by the nurse to this question?
- A. "You need to regain your strength before attempting such exertion."?
- B. "When you can climb 2 flights of stairs without problems, it is generally safe."?
- C. "Have a glass of wine to relax you, then you can try to have sex."?
- D. "If you can maintain an active walking program, you will have less risk."?
Correct Answer: B
Rationale: Following a myocardial infarction, there is a risk of cardiac rupture at the site of the infarction for approximately six (6) weeks until scar tissue forms. The advice to wait until the client can climb two flights of stairs without issues is common among healthcare providers as it indicates an adequate level of physical exertion tolerance and suggests a lower risk of complications during sexual activity. Choice A is not specific to the recovery timeline related to sexual activity post-myocardial infarction. Choice C is inappropriate as alcohol consumption should not be recommended before sexual activity. Choice D, though promoting an active lifestyle, does not directly address the safety concerns related to sexual intercourse post-myocardial infarction.
A nonimmunized child appears at the clinic with a visible rash. Which of the following observations indicates the child may have rubeola (measles)?
- A. Small blue-white spots are visible on the oral mucosa.
- B. The rash begins on the trunk and spreads outward.
- C. There is low-grade fever.
- D. The lesions have a "teardrop-on-a-rose-petal"? appearance.
Correct Answer: A
Rationale: The presence of small blue-white spots on the oral mucosa, known as Koplik's spots, is characteristic of measles (rubeola) infection. These spots typically appear on the buccal mucosa opposite the second molars, 1-2 days before the rash onset, and last until 2 days after the rash appears. While Koplik's spots are pathognomonic for measles, their absence does not rule out the diagnosis. Therefore, choice A is the correct answer. Choices B, C, and D are incorrect because the rash pattern, presence of low-grade fever, and characteristic appearance of lesions are not specific indicators of measles infection.
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.