Which of the following is a characteristic of a Venturi mask?

Reduces rebreathing of exhaled air.

Delivers high percentages of oxygen at flow rates of 10 to 15 L/min.

Provides a precise amount of oxygen.

Works independently of client breathing factors and flow of oxygen.

Answer and Explanation

The Correct Answer is C

Choice A reason:

Reducing rebreathing of exhaled air is not a primary characteristic of a Venturi mask. This feature is more associated with non-rebreather masks, which have a one-way valve to prevent exhaled air from being inhaled again.

Choice B reason:

Delivering high percentages of oxygen at flow rates of 10 to 15 L/min is not specific to Venturi masks. Non-rebreather masks are typically used for high oxygen flow rates. Venturi masks are designed to deliver precise oxygen concentrations at lower flow rates.

Choice C reason:

Providing a precise amount of oxygen is the key characteristic of a Venturi mask. Venturi masks are equipped with color-coded adapters that allow for the delivery of specific oxygen concentrations, regardless of the patient’s breathing pattern.

Choice D reason:

Working independently of client breathing factors and flow of oxygen is not entirely accurate. While Venturi masks do provide a consistent oxygen concentration, they still depend on the flow of oxygen set by the healthcare provider.

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Correct Answer is ["C","D"]

Explanation

Choice A reason:

Giving a unit of packed red blood cells is not typically indicated solely for a core temperature of 97°F (36.1°C). This intervention is usually reserved for cases of significant blood loss or anemia. Hypothermia in the postoperative period is more effectively managed with warming techniques rather than blood transfusions.

Choice B reason:

Providing warm irrigation to the operative site is not a standard intervention for managing mild hypothermia postoperatively. While warm irrigation can be used intraoperatively to maintain body temperature, it is not typically used postoperatively.

Choice C reason:

Providing warmed IV fluids is an appropriate intervention for a client with a core temperature of 97°F (36.1°C). Warmed IV fluids help to increase the core body temperature and prevent further heat loss. This is a standard practice in managing mild hypothermia in postoperative patients.

Choice D reason:

Providing a warm blanket is another effective intervention for managing mild hypothermia. Warm blankets help to increase the patient’s body temperature by reducing heat loss and providing external warmth. This is a common and effective method used in postoperative care.

Choice E reason:

Giving acetaminophen per rectum is not indicated for managing hypothermia. Acetaminophen is used to reduce fever, not to increase body temperature. In this scenario, the client needs warming interventions rather than antipyretic medication.

A. 5% dextrose in water (D5W). B. 5% dextrose in 0.25% sodium chloride (D5 1/4 NS). C. 0.9% normal saline (0.9% NaCl). D. 3% sodium chloride (3% NaCl).

Correct Answer is C

Explanation

Choice A reason:

5% dextrose in water (D5W) is not typically used for fluid resuscitation in cases of hypovolemia due to severe bleeding. D5W is a hypotonic solution once the dextrose is metabolized, which means it does not remain in the intravascular space and is not effective in expanding blood volume. It is more commonly used for providing free water and calories.

Choice B reason:

5% dextrose in 0.25% sodium chloride (D5 1/4 NS) is also not suitable for fluid resuscitation in hypovolemia due to severe bleeding. This solution is hypotonic and will not adequately expand the intravascular volume. It is generally used for maintenance fluids rather than for resuscitation.

Choice C reason:

0.9% normal saline (0.9% NaCl) is the preferred choice for fluid resuscitation in hypovolemia due to severe bleeding. It is an isotonic solution, meaning it has the same osmolarity as blood and remains in the intravascular space, effectively expanding blood volume. This helps to restore circulating volume and improve tissue perfusion.

Choice D reason:

3% sodium chloride (3% NaCl) is a hypertonic solution and is not typically used for fluid resuscitation in hypovolemia due to severe bleeding. Hypertonic solutions can cause rapid shifts of fluid from the intracellular to the extracellular space, which can lead to complications such as hypernatremia and osmotic demyelination syndrome. It is generally reserved for specific situations such as severe hyponatremia.

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Which of the following is a characteristic of a Venturi mask?

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a client who has a core temperature of 97°F (36.1°C) post-op in the post-anesthesia care unit. What action(s) will the nurse take in light of this finding? (Select all that apply)

Correct Answer is ["C","D"]

Explanation

A client is admitted with hypovolemia due to severe bleeding. Which IV fluid does the nurse anticipate using to replace fluid losses?

Correct Answer is C

Explanation

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