While working in the Emergency department a Rapid response nurse is evaluating a patient in acute respiratory failure after a motor vehicle crash. Which of the following areas should the nurse evaluate as the most reliable indicator of central cyanosis?
Soles of the feet
Oral mucosa
Ear lobes
Conjunctivae
The Correct Answer is B
(a) Soles of the feet:
The soles of the feet are not considered the most reliable indicator of central cyanosis because peripheral areas can be affected by various factors, including temperature and circulation. Changes in color here might not accurately reflect central oxygenation status.
(b) Oral mucosa:
The oral mucosa is the most reliable indicator of central cyanosis because it reflects the oxygenation status of the central circulatory system. Cyanosis in this area indicates a significant drop in arterial oxygen saturation and is a more direct indicator of hypoxemia compared to peripheral sites.
(c) Ear lobes:
Ear lobes, like the soles of the feet, can be influenced by peripheral circulation and environmental factors. While cyanosis can be observed here, it is not as reliable as central sites like the oral mucosa for assessing systemic oxygenation.
(d) Conjunctivae:
The conjunctivae can show signs of cyanosis, but the oral mucosa is still a more sensitive and reliable indicator for central cyanosis. The oral mucosa provides a clear and consistent site to assess oxygenation in emergency situations.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) "Let's discuss your risk factors for heart disease.":
A waist circumference of 43 inches (109 cm) in a male is considered elevated and indicates central obesity, which is a significant risk factor for cardiovascular diseases, including heart disease, hypertension, and type 2 diabetes. Addressing this finding by discussing risk factors for heart disease is appropriate and necessary for preventive healthcare.
B) "We should review the amount of protein in your diet.":
While diet is important, protein intake is not directly related to waist circumference. The primary concern with a large waist circumference is the associated risk of metabolic and cardiovascular conditions, rather than specific macronutrient consumption.
C) "Waist circumference can vary over the course of the day.":
Though there can be minor variations in waist circumference throughout the day due to factors like fluid retention or meals, a measurement of 43 inches is significantly above the threshold indicating central obesity. This warrants a discussion about health risks rather than focusing on daily fluctuations.
D) "You probably have a vitamin deficiency.":
Vitamin deficiencies are not directly indicated by waist circumference measurements. This statement is not appropriate given the finding, as the primary concern with a large waist circumference is its association with increased risk of chronic diseases rather than nutrient deficiencies.
Correct Answer is C
Explanation
A. To prevent further dehydration:
While preventing dehydration is important, it is not the primary reason for bringing a cup of water when assessing the thyroid gland. Dehydration is addressed through overall fluid management rather than during a specific thyroid exam.
B. To assist the client to feel more comfortable:
Providing comfort is essential, but bringing a cup of water specifically for comfort during a thyroid exam is not typically necessary. The primary focus of the water in this context is related to the assessment process.
C. To observe the movement of the thyroid gland:
Observing the movement of the thyroid gland during swallowing can help the nurse assess for abnormalities. Having the client drink water allows the nurse to observe the thyroid gland's movement, which can indicate the presence of goiters, nodules, or other irregularities.
D. To promote the nurse-client relationship:
Promoting a good nurse-client relationship is always beneficial, but bringing a cup of water for this specific purpose is not relevant to the physical assessment of the thyroid gland. The water's main purpose is to facilitate the physical examination process.
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