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
Explanation
A) Correct- Viral meningitis is an inflammation of the meninges (the protective membranes surrounding the brain and spinal cord) caused by a viral infection. While it can be serious, it is generally less severe than bacterial meningitis. Monitoring the client's temperature is an important aspect of care, as changes in temperature can indicate the progression of the illness or the effectiveness of interventions. A temperature increase from 101°F to 102°F is a subtle change but may still require close monitoring and symptom management. The practical nurse (PN) is capable of monitoring vital signs, including temperature, and reporting any changes to the registered nurse (RN) or healthcare provider. It is within the PN's scope of practice to assess and report changes in vital signs and general condition. The other scenarios involve more complex clinical situations that may require the expertise of registered nurses.
B) Incorrect- Myxedema coma is a severe form of hypothyroidism and is considered a medical emergency. Managing and assessing a client with myxedema coma requires advanced assessment, critical thinking, and interventions that are typically within the scope of registered nurses.
C) Incorrect- Diabetic ketoacidosis (DKA) is a complex condition that requires frequent monitoring of blood glucose levels, electrolytes, vital signs, and assessment of the level of consciousness. The change in the Glasgow Coma Scale score indicates a neurological deterioration that requires immediate attention and intervention, making it suitable for a registered nurse.
D) Incorrect- A subdural hematoma is a serious neurological condition that requires close monitoring of vital signs and neurological status. The change in blood pressure indicates a potential change in intracranial pressure and should be managed by registered nurses with expertise in neurological care.
Correct Answer is D
Explanation
Itraconazole is an antifungal medication used to treat a variety of fungal infections. Antacids, which are used to treat heartburn and acid reflux, can decrease the absorption of itraconazole in the body. Therefore, it is important to instruct the client to avoid taking itraconazole with antacids. If the client needs to take an antacid, it should be taken at least 2 hours before or after taking itraconazole.
Reporting any difficulty with breathing is important as it can be a sign of an allergic reaction to the medication. Monitoring for changes in stool color is important as it can be an indication of liver dysfunction, which is a potential side effect of itraconazole.
Avoiding the consumption of grapefruit juice is important as it can increase the level of itraconazole in the body, which can increase the risk of side effects.
In summary, the client should be instructed to avoid taking itraconazole with antacids and to take any antacid at least 2 hours before or after taking itraconazole. The client should also be instructed to report any difficulty with breathing and to monitor for changes in stool color. Additionally, the client should avoid consuming grapefruit juice while taking itraconazole.
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