A nurse is caring for a group of clients. The nurse should obtain a blood pressure reading using only the left extremity from which of the following clients?
A client who has a peripherally inserted central catheter (PICC) in the left arm
A client who has a right upper extremity arteriovenous fistula
A client who has right-sided weakness due to Parkinson's disease
A client who has left-sided Bell's palsy
The Correct Answer is B
The nurse should obtain a blood pressure reading using only the left extremity from a client who has a right upper extremity arteriovenous fistula. An arteriovenous fistula is a surgical connection between an artery and a vein that is created for hemodialysis access.
Measuring blood pressure on the arm with an arteriovenous fistula can cause damage to the fistula, reduce blood flow, and increase the risk of infection or thrombosis. Therefore, blood pressure should be measured on the opposite arm or on another site such as the leg.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is A
Explanation
A high white blood cell (WBC) count is a common sign of infection and inflammation, such as pneumonia. The normal range of WBC count is 4,500 to 11,000/mm3 . Sodium, blood urea nitrogen (BUN), and hematocrit are not directly related to pneumonia and may vary depending on other factors such as hydration status, renal function, and blood loss.
Correct Answer is D
Explanation
A flat lesion with irregular borders is one of the signs of melanoma, a type of skin cancer that arises from melanocytes, the cells that produce pigment. Other signs of melanoma include asymmetry, color variation, diameter greater than 6 mm, and evolution or change over time. The other options are more characteristic of other types of skin cancer or benign lesions.
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