A 49-year-old male patient has been experiencing flu-like symptoms, including fever and chest congestion, for the past four days.
He visited the emergency department (ED) last night due to increased difficulty in breathing.
The patient has a 20-year history of smoking half a pack of cigarettes per day and has no significant medical or surgical history.
The nurse has placed the patient on a cardiorespiratory monitor and administered a nasal cannula. After completing an assessment, the nurse documented the findings in the patient’s chart.
Which assessment findings indicate hypoxia?
Productive cough
Respiratory rate of 28 breaths/minute
Oxygen saturation of 90% on room air
Heart rate of 101 beats/minute
Capillary refill of 4 seconds
Blood pressure of 145/89 mm Hg
Correct Answer : B,C,D
Choice A rationale
A productive cough is not a specific indicator of hypoxia. It could be a symptom of many conditions, including a common cold, flu, or other respiratory tract infections.
Choice B rationale
A respiratory rate of 28 breaths/minute is higher than the normal range (12-20 breaths/minute for adults), indicating that the patient may be trying to increase oxygen intake and eliminate carbon dioxide due to hypoxia.
Choice C rationale
An oxygen saturation of 90% on room air is lower than the normal range (95%-100%). This indicates that the patient’s blood is not carrying as much oxygen as it should, which is a sign of hypoxia.
Choice D rationale
A heart rate of 101 beats/minute is higher than the normal range (60-100 beats/minute for adults). This could be a response to hypoxia as the body tries to deliver more oxygen to the tissues.
Choice E rationale
A capillary refill of 4 seconds is slightly longer than the normal range (less than 2 seconds). While this could indicate poor peripheral circulation, it is not a specific or direct indicator of hypoxia.
Choice F rationale
A blood pressure of 145/89 mm Hg is higher than the normal range (less than 120/80 mm Hg). While hypertension could be related to many factors, it is not a specific indicator of hypoxia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
While monitoring serum sodium levels is important in a client with DKA, it is not the most critical. Hyperglycemia can lead to a state of effective osmotic diuresis, which can cause sodium depletion.
Choice B rationale
Serum potassium levels are crucial to monitor in a client with DKA3. Despite total body potassium depletion, serum potassium levels may be high or normal upon presentation due to acidosis and insulin deficiency. However, with insulin treatment, potassium will shift back into the cells, potentially leading to life-threatening hypokalemia.
Choice C rationale
Blood urea nitrogen (BUN) might be elevated due to dehydration, but it is not the most critical lab value to monitor in the management of DKA3.
Choice D rationale
Urine ketones are not as important to monitor as serum potassium in DKA. The presence of ketones in urine only confirms that the body is breaking down fat, not the severity of DKA3.
Correct Answer is ["6.8"]
Explanation
Step 1: Convert the client’s weight from lbs to kg. 1 kg is approximately 2.2 lbs. So, 198 lbs ÷
2.2 = 90 kg (rounded to the nearest whole number).
Step 2: Calculate the total mcg of Dopamine needed per minute. The prescription is for 2 mcg/kg/minute. So, 90 kg × 2 mcg/kg/minute = 180 mcg/minute.
Step 3: Convert the total mcg of Dopamine in the bag to mcg/mL. The bag contains 400 mg of Dopamine in 250 mL. 1 mg is equal to 1000 mcg. So, 400 mg × 1000 = 400,000 mcg. Therefore, the concentration is 400,000 mcg ÷ 250 mL = 1600 mcg/mL.
Step 4: Calculate the mL of Dopamine needed per minute. So, 180 mcg/minute ÷ 1600 mcg/mL
= 0.1125 mL/minute.
Step 5: Convert mL/minute to mL/hour. There are 60 minutes in an hour. So, 0.1125 mL/minute × 60 = 6.75 mL/hour. The IV pump should be set to deliver 6.8 mL/hour (rounded to the nearest tenth).
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