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","C","D"]
Explanation
A) Age 55 years:
Advancing age is a risk factor for skin cancer. As individuals age, the cumulative exposure to UV radiation increases, and the skin's ability to repair damage decreases, leading to a higher risk of skin cancer.
B) Yellow palms of the hands:
Yellow palms are typically associated with conditions like carotenemia or jaundice, not skin cancer. This symptom does not indicate an increased risk of developing skin cancer.
C) Light-colored hair:
Individuals with light-colored hair, especially those with fair skin and light eyes, are at higher risk for skin cancer. They often have less melanin, which provides some protection against UV radiation, increasing their susceptibility to damage from the sun.
D) Actinic keratosis on face:
Actinic keratosis is a precancerous skin lesion caused by long-term sun exposure. It is considered a significant risk factor for developing squamous cell carcinoma, a type of skin cancer. Presence of actinic keratosis should prompt careful monitoring and possibly treatment.
E) Poor skin turgor:
Poor skin turgor typically indicates dehydration or aging but is not directly related to an increased risk of skin cancer. It is more of a general indicator of skin and overall health rather than a specific risk factor for cancer.
Correct Answer is A
Explanation
A) Fish: Fish, especially fatty fish like salmon, mackerel, sardines, and trout, are rich sources of omega-3 fatty acids. Omega-3 fatty acids are essential for heart health, reducing inflammation, and supporting brain function. Including fish in the diet is highly recommended for obtaining these beneficial fats naturally.
B) Leafy green vegetables: While leafy green vegetables provide many essential nutrients, they are not significant sources of omega-3 fatty acids. They are more commonly known for their vitamins, minerals, and fiber content, which are important for overall health but do not provide the omega-3s that fish does.
C) Corn oil: Corn oil is high in omega-6 fatty acids rather than omega-3 fatty acids. While omega-6 fatty acids are also necessary for health, they should be balanced with omega-3s to maintain optimal health. Corn oil does not contribute significantly to omega-3 intake.
D) Dietary supplements: While omega-3 supplements can be a good alternative for those who do not consume enough fish, obtaining nutrients from whole foods is generally preferred for additional health benefits, such as protein and other nutrients found in fish. Supplements should be considered when dietary intake is insufficient.
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