A nurse is admitting a client who reports chest pain and has been placed on a telemetry monitor. Which of the following should the nurse analyze to determine whether the client is experiencing a myocardial infarction?
Twave
Ssegment
QRS duration
PR interval
The Correct Answer is B
The Ssegment is the portion of an electrocardiogram (ECG) that represents early ventricular repolarization, which occurs after ventricular contraction and before ventricular relaxation. The Ssegment can be elevated or depressed in cases of myocardial infarction (MI), indicating ischemia or injury to the myocardium due to reduced blood flow or oxygen supply.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The nurse should plan to confirm the correct position of the line by obtaining a blood sample, as this is one of the methods to verify placement and patency of a central venous catheter. The nurse should also instruct the client to perform a Valsalva maneuver (bearing down) as the catheter is inserted, place the head of the client's bed higher than 30 degrees, and cleanse the site with an antiseptic solution such as chlorhexidine.
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.
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