What assessment is best for distinguishing between hypoxemia and hypercapnia?
Measuring arterial blood gases
Observing for signs and symptoms
Measuring oxygen saturations
Performing pulmonary function testing
The Correct Answer is A
A. Arterial blood gas (ABG) analysis is the most accurate method for distinguishing between hypoxemia (low oxygen levels in the blood) and hypercapnia (elevated carbon dioxide levels). ABG testing measures both the partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2), providing a clear distinction between the two conditions.
B. While observing for signs and symptoms is useful, it is not specific enough to distinguish between hypoxemia and hypercapnia, as both conditions may present with similar symptoms like shortness of breath or confusion.
C. Measuring oxygen saturation with a pulse oximeter can detect hypoxemia but does not provide information about carbon dioxide levels, so it cannot distinguish between hypoxemia and hypercapnia.
D. Pulmonary function testing assesses lung volumes and airflow but does not directly measure oxygen or carbon dioxide levels, making it less effective for distinguishing between hypoxemia and hypercapnia.
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Related Questions
Correct Answer is D
Explanation
A. When performing hand hygiene, the hands should be held lower than the elbows to allow water to flow downward, preventing the contamination of the forearms.
B. The water temperature should be warm, but not hot, to prevent skin irritation. Extremely hot water is not necessary for effective hand hygiene.
C. Hands and arms should be rubbed together to create friction during hand washing. However, drying should be done with a clean paper towel or air dryer, not by rubbing the hands and arms together.
D. The correct amount of liquid soap for hand hygiene is typically 4 to 5 mL. This is the appropriate amount to ensure effective coverage and cleaning of the hands.
Correct Answer is D
Explanation
A. A superficial partial thickness burn affects only the outermost layer of skin (epidermis) and causes redness and pain, but it doesn't usually cause blisters.
B. A full-thickness burn involves the destruction of all layers of the skin, including the epidermis, dermis, and sometimes underlying tissue. This type of burn typically causes a white or charred appearance and may not be painful due to nerve damage.
C. Dermal thickness burn is not a standard classification of burn depth. Burns are typically classified into superficial, partial-thickness, and full-thickness categories.
D. A deep partial-thickness burn involves damage to both the epidermis and dermis, causing redness, swelling, and blistering. This is the most likely classification for a sunburn with redness and blistering.
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