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 D
Explanation
A) Incorrect- Observing for swelling at the fracture site is important for assessing the client's musculoskeletal condition, but it is not the priority intervention in this situation. The absence of spontaneous respirations and palpable carotid pulse indicates cardiac arrest, and immediate intervention is needed.
B) Incorrect- Analyzing the cardiac rhythm in another lead is not the first priority when the client is in cardiac arrest. Cardiopulmonary resuscitation (CPR) should be initiated immediately to restore circulation.
C) Incorrect- Obtaining a 12-lead electrocardiogram is not the initial intervention in a client in cardiac arrest. CPR and defibrillation (if indicated) are the immediate actions to provide circulation and oxygenation to the vital organs.
D) Correct- The absence of spontaneous respirations and palpable carotid pulse indicates cardiac arrest. In this situation, immediate initiation of cardiopulmonary resuscitation (CPR) is critical to provide circulation and oxygenation to the vital organs. Chest compressions are the initial step to address cardiac arrest and ensure blood flow to the body.
Correct Answer is A
Explanation
An S3 heart sound can be a normal finding during pregnancy due to increased blood volume and changes in cardiac output. It is known as a physiological S3 and is considered a benign finding in the absence of other concerning symptoms or signs.
In this case, there is no immediate need for intervention or concern regarding the S3 heart sound. It is not necessary to prepare the client for an echocardiogram or limit the client's fluids based solely on the presence of an S3 heart sound in the absence of other significant symptoms or complications.
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