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 ["A","B","C","E"]
Explanation
A) Correct- Assessing the child's pulse helps determine their cardiac status and whether they have a detectable heartbeat. This information is essential for deciding the appropriate interventions.
B) Correct- Placing a cervical collar is necessary if there is any suspicion of cervical spine injury due to the fall or submersion. This action helps stabilize the neck and prevent further damage to the spine.
C) Correct- Checking for open wounds is important to assess for potential sources of bleeding or infection that may require immediate attention.
D) Incorrect- While child safety is important, the immediate priority in this situation is assessing and stabilizing the child's medical condition. Child protective services may be involved later if there are concerns about the circumstances surrounding the incident.
E) Correct- Assessing the airway is of utmost importance to ensure that the child can breathe. In cases of near-drowning, ensuring a clear airway is crucial for oxygenation.
F) Incorrect- While establishing intravenous access may be important for certain interventions, it is not one of the immediate priorities in this situation. Ensuring the child's airway, breathing, and circulation take precedence.
Correct Answer is C
Explanation
A) Incorrect- While providing comfort measures like blankets and warm drinks can help the client feel more comfortable, they do not address the underlying thyroid hormone imbalance.
B) Incorrect- Hemoglobin level is not directly related to the client's symptoms or the thyroid hormone imbalance. Monitoring hemoglobin is important in assessing anemia but is not the priority in this case.
C) Correct- The client's symptoms (raspy voice, cold intolerance, fatigue) along with an elevated TSH and low T3 and T4 levels suggest hypothyroidism. Levothyroxine is a synthetic thyroid hormone used to treat hypothyroidism. Administering the prescribed dose of levothyroxine is crucial to address the thyroid hormone imbalance and alleviate the symptoms.
D. Incorrect- Non-pitting edema is not a common symptom of hypothyroidism. The client's symptoms and lab results are more indicative of hypothyroidism, and addressing the thyroid hormone imbalance is the priority.
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