Nokea
The nurse is counting a client's respiratory rate. During a 30-second interval, the nurse counts six respirations, and the client coughs three times. In repeating the count for a second 30-second interval, the nurse counts eight respirations. Which respiratory rate should the nurse document?
- A. 14
- B. 16
- C. 17
- D. 28
Correct Answer: B
Rationale: The most accurate respiratory rate is the second count obtained by the nurse, which was not interrupted by coughing. The nurse counted eight respirations over 30 seconds, so doubling this count gives a respiratory rate of 16 breaths per minute. This calculation is based on the assumption that the client's breathing pattern remained relatively stable during the two 30-second intervals. Options A, C, and D are incorrect because they do not reflect the accurate count obtained without interruptions. Choice B (16) is the correct answer as it reflects the uninterrupted count of respirations by the nurse.
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A child is diagnosed with a Greenstick Fracture. Which of the following most accurately describes the broken bone?
- A. compound fracture of the fibula
- B. a partial break in a long bone
- C. fracture of the growth plate of the ulna near the wrist
- D. Colles fracture of the tibia
Correct Answer: B
Rationale: A Greenstick Fracture is commonly found in children due to their bones being more flexible. This type of fracture occurs when a bone bends and partially breaks, resembling what happens when a green stick from a tree is bent in half. Therefore, the most accurate description of a Greenstick Fracture is 'a partial break in a long bone.' Choice A, 'compound fracture of the fibula,' is incorrect as a Greenstick Fracture is not a compound fracture. Choice C, 'fracture of the growth plate of the ulna near the wrist,' is incorrect as it describes a different type of fracture. Choice D, 'Colles fracture of the tibia,' is incorrect as it refers to a specific type of fracture in a different bone.
What drives respiration in a patient with advanced chronic respiratory failure?
- A. Hypoxemia
- B. Hypocapnia
- C. Hypercapnia
- D. None of the above
Correct Answer: A
Rationale: In patients with advanced chronic respiratory failure, such as those with chronic obstructive pulmonary disease (COPD), the respiratory drive shifts from being primarily stimulated by high levels of carbon dioxide (hypercapnia) to being driven by low oxygen levels (hypoxemia). This shift is due to the body's adaptation to chronic respiratory acidosis and hypoxemia. As a result, hypoxemia becomes the primary stimulus for respiration in these patients. Hypocapnia, a low level of carbon dioxide, is not a common driver of respiration in patients with advanced chronic respiratory failure. Therefore, the correct answer is hypoxemia.
In children suspected to have a diagnosis of diabetes, which one of the following complaints would be most likely to prompt parents to take their school-age child for evaluation?
- A. Polyphagia
- B. Dehydration
- C. Bedwetting
- D. Weight loss
Correct Answer: C
Rationale: The correct answer is 'Bedwetting.' One of the initial symptoms of type 1 diabetes in children is bedwetting. Parents are likely to notice bedwetting in a school-age child, prompting them to seek evaluation. Polyphagia (excessive hunger) and weight loss are also common symptoms of diabetes but may not be as readily noticeable to parents compared to bedwetting. Dehydration is a consequence of diabetes rather than an early symptom that would prompt parents for evaluation.
Which of the following is TRUE about shock?
- A. A patient with severe shock does not always have an abnormally low blood pressure.
- B. Confusion and deteriorating mentation are indicative of hypotensive shock.
- C. Patients with compensated shock may not be able to maintain a normal blood pressure.
- D. A normal blood pressure does not imply that the patient is stable.
Correct Answer: B
Rationale: Confusion and deteriorating mentation are indeed indicative of hypotensive shock. It is important to note that a patient with hypotensive shock will likely exhibit deteriorating mental status. Choice A is incorrect because a patient in severe shock may not always have an abnormally low blood pressure, making it an unreliable indicator of shock severity. Choice C is incorrect because patients with compensated shock may present with normal blood pressure but still have inadequate tissue perfusion. Choice D is incorrect because a normal blood pressure does not guarantee the patient's stability, especially in cases of shock where tissue perfusion may be compromised despite normal blood pressure readings.
A systolic blood pressure of 145 mm Hg is classified as:
- A. Normotensive
- B. Prehypertension
- C. Stage I hypertension
- D. Stage II hypertension
Correct Answer: C
Rationale: A systolic blood pressure of 145 mm Hg falls within the range of 140-159 mm Hg, which is classified as Stage I hypertension. Normotensive individuals have a systolic blood pressure less than 120 mm Hg, making choice A incorrect. Prehypertension is characterized by a systolic blood pressure ranging from 120-139 mm Hg, excluding choice B. Stage II hypertension is diagnosed when the systolic blood pressure is greater than 160 mm Hg, making choice D incorrect. Therefore, the correct classification for a systolic blood pressure of 145 mm Hg is Stage I hypertension.