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. Heat application may provide comfort for localized pain but does not address the underlying cause of hypercalcemia, which requires systemic management.
B. While rest may be beneficial for certain conditions, it does not directly address hypercalcemia. Encouraging mobility and adequate fluid intake is typically more effective.
C. Coughing and deep breathing exercises are important for preventing respiratory complications after surgery but are not relevant for managing hypercalcemia.
D. Increasing fluid intake promotes hydration and enhances urinary calcium excretion, helping to lower serum calcium levels and minimize complications associated with hypercalcemia
Correct Answer is B
Explanation
A. While monitoring bowel sounds is important for assessing gastrointestinal function, it is not the most critical parameter to monitor in a patient with leukemia.
B. Fever can indicate infection, which is a common complication in patients with leukemia due to compromised immune function from the disease and its treatments.
C. Monitoring heart rate is important, but it may not be the most crucial parameter to monitor unless there are specific cardiac concerns.
D. Skin integrity should be monitored, but it may not be the most important parameter to monitor unless there are concerns about skin breakdown or infections.
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