A nurse is caring for a client who has a suspected diagnosis of myasthenia gravis. The provider prescribes a Tensilon test. Which of the following findings indicates a positive test?
Muscle strength shows no change.
Muscle contractions become progressively stronger.
Electrical charge in a muscle increases in intensity.
A pill-rolling tremor appears.
The Correct Answer is B
A. If there is no change in muscle strength after the Tensilon test, it indicates a negative result for myasthenia gravis.
B. Muscle contractions become progressively stronger is a positive result for myasthenia gravis. Tensilon temporarily improves muscle strength in patients with this condition.
C. Electrical charge in a muscle increases in intensity is not a relevant parameter for the Tensilon test.
D. A pill-rolling tremor appears is a symptom of Parkinson's disease, not myasthenia gravis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. While there are strict inclusion and exclusion criteria for alteplase administration, this statement is overly broad. There are certain situations where anticoagulant or antiplatelet therapy can be managed to allow for alteplase use.
B. Alteplase is administered as a bolus over 1 minute, followed by an infusion over 60 minutes.
C. While time is critical in stroke treatment, the recommended window for alteplase administration is typically within 3-4.5 hours of symptom onset.
D. The maximum dose of alteplase is actually 0.9 mg/kg, up to a maximum of 90 mg.
Correct Answer is A
Explanation
A. Elective cardioversion is a procedure used to restore a normal heart rhythm by delivering a controlled electrical shock to the heart. It is generally used for patients with stable atrial or ventricular arrhythmias who do not respond to medication. In the case of stable VT, elective cardioversion might be considered if the arrhythmia is causing symptoms or if the patient’s condition changes
B. CPR is an emergency procedure used when a person’s heart has stopped beating (cardiac arrest) or when they are not breathing. It is not indicated for a stable VT because the patient is still stable and conscious, and CPR is not used for arrhythmias like VT in a stable patient.
C. Radiofrequency catheter ablation is a procedure used to destroy abnormal electrical pathways in the heart that cause arrhythmias. This is often used as a treatment for recurrent or persistent VT, especially if medication or cardioversion fails to manage the condition effectively. For a stable patient with VT, this treatment might be considered in the long-term management plan rather than as an immediate intervention.
D. Defibrillation is the use of an electrical shock to the heart to restore a normal rhythm in cases of life- threatening arrhythmias such as ventricular fibrillation or pulseless VT. It is not used for stable VT because the patient still has a pulse and is not in immediate danger of cardiac arrest
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