What is seen on an ECG tracing when there is no electrical activity being produced?

Negative waveform

Isoelectric line

Downward deflection

Positive waveform

Answer and Explanation

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.

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Correct Answer is D

Explanation

A. Postoperative pain typically resolves after a laparoscopic cholecystectomy since the surgery removes the gallbladder
B. While positioning during surgery can cause discomfort, isolated right shoulder pain is more commonly attributed to the diaphragmatic irritation from residual nitrous oxide in the abdomen.

C. Nitrous dioxide used during laparoscopic procedures is not associated with referred pain to the right shoulder. The pain is due to carbon dioxide gas used during the procedure resulting in the irritation of the diaphragm.
D. This pain is often due to the carbon dioxide used to inflate the abdomen during surgery, which can irritate the diaphragm and refer pain to the shoulder. Ambulation helps to absorb the gas more quickly.

A. Examine the patient and collect data. B. Notify the health-care provider immediately. C. Obtain vital signs. D. Administer antiarrhythmic medication.

Correct Answer is B

Explanation

A. While assessment and data collection are important, the priority in the presence of a life-threatening arrhythmia is to initiate immediate interventions to address the situation.
B. The nurse should immediately inform the healthcare provider about the life- threatening arrhythmia to obtain further guidance and potential orders for intervention.
C. Vital signs are important, but they should not delay immediate action when a life- threatening arrhythmia is present.

D. Administering antiarrhythmic medication may be necessary, but the nurse should first notify the healthcare provider to obtain orders and guidance before administering any medications.

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What is seen on an ECG tracing when there is no electrical activity being produced?

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Naxlex Comprehensive Predictor Exams

A nurse is reinforcing teaching with a client who reports right shoulder pain following a laparoscopic cholecystectomy. Which of the following statements should the nurse make?

Correct Answer is D

Explanation

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Correct Answer is B

Explanation

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