A client needs 5 liters of oxygen. Which of the following devices is appropriate for use with an oxygen flow rate of 5 liters? Select all that apply:
High-flow nasal cannula
Simple face mask
Nasal cannula
Non-rebreather mask
Venturi mask
Correct Answer : B,C
Choice A Reason: High-flow nasal cannula
The high-flow nasal cannula (HFNC) is designed to deliver oxygen at flow rates much higher than 5 liters per minute, typically ranging from 20 to 60 liters per minute. It is used for patients requiring high levels of oxygen and positive airway pressure. Therefore, it is not appropriate for a flow rate of 5 liters per minute.
Choice B Reason: Simple face mask
The simple face mask is suitable for delivering oxygen at flow rates between 6 to 10 liters per minute. However, it can also be used at a flow rate of 5 liters per minute, providing an FiO2 (fraction of inspired oxygen) of approximately 40-60%. This makes it an appropriate choice for the given requirement.
Choice C Reason: Nasal cannula
The nasal cannula is a low-flow oxygen delivery device that can deliver oxygen at flow rates from 1 to 6 liters per minute. At 5 liters per minute, it provides an FiO2 of approximately 40%. It is comfortable for patients and is commonly used for those who need a moderate amount of supplemental oxygen.
Choice D Reason: Non-rebreather mask
The non-rebreather mask is designed to deliver high concentrations of oxygen, typically at flow rates of 10 to 15 liters per minute. It is used in situations where patients need a high FiO2, close to 100%. Therefore, it is not suitable for a flow rate of 5 liters per minute.
Choice E Reason: Venturi mask
The Venturi mask is used to deliver precise oxygen concentrations, typically ranging from 24% to 60% FiO2. It is suitable for patients who require controlled oxygen therapy. While it can be adjusted to deliver oxygen at a flow rate of 5 liters per minute, it is generally used for more specific FiO2 requirements.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: An increase in temperature is not a primary indicator of hypovolemic shock. While fever can occur due to infection or inflammation, it is not directly related to hypovolemic shock, which is primarily characterized by a significant loss of blood or fluids leading to decreased perfusion and oxygenation of tissues.
Choice B reason: A decrease in urinary output is a critical sign of hypovolemic shock. When the body loses a significant amount of blood or fluids, the kidneys receive less blood flow, leading to reduced urine production. This is a compensatory mechanism to conserve fluids and maintain blood pressure. Normal urine output is typically around 30 to 50 mL per hour, so a drop below this range is concerning.
Choice C reason: An increase in heart rate is a common response to hypovolemic shock as the body attempts to maintain cardiac output and blood pressure despite the loss of blood volume. Tachycardia (increased heart rate) is one of the early signs of shock, indicating that the heart is working harder to pump blood to vital organs.
Choice D reason: A decrease in respiratory rate is not typical of hypovolemic shock. In fact, hypovolemic shock often leads to an increased respiratory rate (tachypnea) as the body tries to compensate for decreased oxygen delivery to tissues. A decrease in respiratory rate could indicate other issues but is not a hallmark of hypovolemic shock.
Correct Answer is A
Explanation
Choice A Reason:
Activating the hospital’s emergency or rapid response system is the most appropriate first action in this scenario. The client is exhibiting signs of a potentially life-threatening condition, such as airway obstruction or severe swelling that could compromise breathing. Immediate intervention by a rapid response team can provide the necessary advanced airway management and other critical care measures to stabilize the patient. This action prioritizes the client’s airway, breathing, and circulation, which are the fundamental aspects of emergency care.
Choice B Reason:
Placing a heart monitor on the client and observing for dysrhythmias is important but not the immediate priority in this situation. While monitoring the heart is crucial, the client’s airway and breathing issues take precedence. Addressing the airway obstruction and ensuring adequate breathing should be the first step before focusing on cardiac monitoring.
Choice C Reason:
Asking the charge nurse to come see the client immediately is a reasonable action, but it may delay the necessary urgent intervention. The charge nurse may not have the advanced skills or equipment required to manage a severe airway obstruction. Activating the rapid response system ensures that a team of healthcare professionals with the appropriate expertise and equipment can respond quickly.
Choice D Reason:
Checking the client’s blood pressure and heart rate is a standard nursing assessment, but it is not the immediate priority in this emergency situation. The client’s difficulty breathing and stridor indicate a potential airway obstruction, which requires immediate attention. Ensuring the airway is clear and the client can breathe is more critical than checking vital signs at this moment.
Choice E Reason:
Providing a calm and assuring environment for the client is important for reducing anxiety and stress, but it does not address the immediate life-threatening issue. While maintaining a calm environment is beneficial, the nurse must first ensure that the client’s airway is secure and that they can breathe adequately. This can only be achieved by activating the rapid response system.
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