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
In this situation, the client has a fingerstick glucose level of 35 mg/dL (1.94 mmol/L) and is alert but diaphoretic. The charge nurse should take the following action:
Give the client a glass of orange juice.
A glucose level of 35 mg/dL (1.94 mmol/L) is considered significantly low (hypoglycemia), and the client's symptoms of diaphoresis indicate that the low glucose level is likely causing the symptoms. Providing the client with a glass of orange juice or another source of fast-acting carbohydrate is appropriate to quickly raise the blood sugar level and alleviate the symptoms of hypoglycemia.
Collecting a blood sample for hemoglobin A1c (HbA1c) is not necessary in this acute situation. HbA1c reflects the average blood glucose level over the past 2-3 months and is used to assess long-term glycemic control in clients with diabetes. It does not provide immediate information or guide immediate interventions for acute hypoglycemia.
Notifying the healthcare provider is not the first action to take in this situation. The client's low glucose level can be promptly addressed by administering a source of fast-acting carbohydrate, such as orange juice. If the client's symptoms persist or worsen despite appropriate intervention, or if there are other concerning factors, then notifying the healthcare provider would be appropriate.
Assessing the client for polyuria (excessive urination) and polyphagia (excessive hunger) is important in the overall management of diabetes, but it is not the immediate action to take in this acute situation of hypoglycemia. The priority at this time is to address the low blood sugar level and relieve the client's symptoms.
Correct Answer is B
Explanation
Shortness of breath on exertion in a client with a history of chronic obstructive pulmonary disease (COPD) and pneumonia indicates increased respiratory distress and compromised lung function. It suggests that the client is experiencing difficulty breathing even with minimal physical exertion. This finding may indicate worsening respiratory status, increased oxygen demand, and inadequate oxygenation. The nurse should take immediate action to address the shortness of breath, which may involve providing supplemental oxygen, initiating or adjusting bronchodilator medications, and monitoring the client's respiratory status closely. Prompt intervention is crucial to ensure adequate oxygenation and prevent respiratory failure.
While the other assessment findings (bilateral diffuse wheezing, temperature of 100.5 °F, and yellow expectorated sputum) are also important and require attention, the shortness of breath on exertion poses the greatest immediate risk and necessitates immediate intervention to address the client's respiratory distress.
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