What is seen on an ECG tracing when there is no electrical activity being produced?
Negative waveform
Isoelectric line
Downward deflection
Positive waveform
The Correct Answer is B
A. A negative waveform indicates a downward deflection from the baseline on an ECG tracing, which may correspond to electrical activity such as depolarization or repolarization of cardiac chambers.
B. An isoelectric line represents the baseline on an ECG tracing when there is no net electrical activity occurring in the heart. It appears flat and represents a period of electrical silence.
C. A downward deflection on an ECG tracing refers to a negative waveform, as mentioned above.
D. A positive waveform on an ECG tracing indicates an upward deflection from the baseline, representing electrical activity such as depolarization or repolarization.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. While draping is essential for maintaining sterility, it's typically done right before the physician performs the biopsy, not as a primary pre-procedure step for the nurse.
B. Monitoring for bleeding is important after the procedure, not necessarily beforehand.
C. Although informing the family can be helpful, the patient's understanding and consent are the top priority. Pain management is crucial for patient comfort and cooperation during the procedure.
D. Administering an analgesic helps reduce the patient's anxiety and discomfort during the bone marrow biopsy, which can be a painful procedure. This improves patient tolerance and allows the physician to perform the procedure more efficiently.
Correct Answer is ["A","B","C","D","E"]
Explanation
First, Hodgkin lymphoma (HL) is commonly characterized by painless lymphadenopathy and is not painful, as stated above. Secondly, HL is often characterized by a low-grade fever rather than a high fever. Third, the presence of Bence-Jones cells in a laboratory test is not associated with Hodgkin lymphoma but indicates multiple myeloma, a different type of cancer. Fourth, Hodgkin disease is indeed a form of cancer; it is a malignancy of the lymphatic system. The nurse's statement that it is "not really cancer" is incorrect and misleading. Fifth, palliative radiation therapy is typically used to relieve symptoms in advanced stages of cancer or non-curative scenarios. However, for stage 1 Hodgkin lymphoma, the treatment usually involves chemotherapy and/or radiation therapy with curative intent, not palliative. Joe's nurse should provide accurate information about the nature of Hodgkin's disease and its treatment options, which are based on the stage and specific characteristics of the lymphoma.
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