When should the nurse conduct an Allen's test?
Just before arterial blood gasses are drawn peripherally.
Prior to attempting a cardiac output calculation.
To assess for presence of a deep vein thrombus in the leg.
When pulmonary artery pressures are obtained.
The Correct Answer is A
Allen's test is a procedure used to assess the patency of the ulnar artery and the collateral circulation of the hand. It is performed to determine the adequacy of collateral circulation before obtaining arterial blood gases from the radial artery. The test helps ensure that the ulnar artery is functioning properly and can supply blood to the hand if the radial artery is used for blood sampling or other invasive procedures.
The test involves occluding both the ulnar and radial arteries while the patient clenches their fist. The nurse then releases pressure on the ulnar artery while maintaining occlusion of the radial artery. The hand should quickly regain normal coloration, indicating adequate collateral circulation.
It's important to note that the Allen's test is specific to the assessment of collateral circulation in the hand and is not used for other purposes such as assessing deep vein thrombosis, cardiac output calculation, or obtaining pulmonary artery pressures.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Incorrect- While it's important for UAPs to report changes in a client's condition, the immediate priority is to assess and address the deteriorating condition of the client. The nurse's first action should be to stop the current care being provided and assess the client.
B) Correct- In this situation, the priority is to ensure the safety and well-being of the client. The client's deteriorated condition needs to be assessed promptly by a licensed nurse to determine the appropriate interventions. Stopping the care being provided by the unlicensed assistive personnel (UAP) allows the nurse to focus on the client's immediate needs.
C) Incorrect- Administering oral medications is not the immediate priority in this situation. The client's deteriorating condition takes precedence over administering medications.
D) Incorrect- While investigating the situation and addressing communication gaps is important, the first priority is to assess and address the client's current condition. The nurse needs to take immediate action to ensure the client's safety and well-being.
Correct Answer is ["200"]
Explanation
To calculate the mL/hour for the erythromycin infusion, we first need to determine the infusion rate in mL/minute.
The infusion is to be completed over 30 minutes, which is equal to 0.5 hours. Next, we divide the total volume (100 mL) by the total time (0.5 hours) to get the infusion rate in mL/hour:
Infusion rate = Total volume / Total time
Infusion rate = 100 mL / 0.5 hours Infusion rate = 200 mL/hour
Therefore, the nurse should program the infusion pump to deliver the erythromycin infusion at a rate of 200 mL/hour.
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