A client with atrial fibrillation is scheduled for an elective cardioversion.
The nurse prepares for the procedure by inserting two intravenous (IV) catheters and connecting the monitoring lead wires to the client.
Which action is most crucial for the nurse to take before initiating the cardioversion?
Activate the synchronization mode.
Choose a monitor lead with a tall R wave.
Administer the prescribed sedative.
Verify the prothrombin time (PT).
The Correct Answer is C
Choice A rationale
Activating the synchronization mode is important during cardioversion to avoid delivering a shock during the vulnerable period of cardiac repolarization, which could potentially cause a life-threatening arrhythmia. However, it is not the most crucial action.
Choice B rationale
Choosing a monitor lead with a tall R wave can help ensure that the cardioverter-defibrillator can sense the patient’s intrinsic cardiac activity. However, this is not the most crucial action.
Choice C rationale
Administering the prescribed sedative is the most crucial action before initiating cardioversion. Sedation is necessary to ensure patient comfort and cooperation during the procedure, as cardioversion can be painful.
Choice D rationale
Verifying the prothrombin time (PT) is important in patients receiving anticoagulation therapy, as atrial fibrillation increases the risk of thrombus formation. However, it is not the most crucial action before initiating cardioversion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.80"]
Explanation
Step 1 is to convert the patient’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So, the patient’s weight in kilograms is 132 pounds ÷ 2.20462 = 59.87 kg.
Step 2 is to calculate the total dosage of dantrolene needed. The prescribed dosage is 1.5 mg/kg. So, the total dosage is 1.5 mg/kg × 59.87 kg = 89.81 mg.
Step 3 is to calculate the volume of reconstituted dantrolene solution needed to provide the total dosage. The reconstituted solution has a concentration of 50 mg/mL. So, the volume needed is 89.81 mg ÷ 50 mg/mL = 1.80 mL.
Correct Answer is C
Explanation
Choice A rationale
Reviewing the history and physical (H&P), nurse’s notes, flow sheet, and orders is a standard part of nursing care for any patient. However, in the case of a 3-week-old infant who has had a seizure, this action alone would not directly address the condition the infant is most likely experiencing.
Choice B rationale
While calling for a chest x-ray could be part of the diagnostic process for certain conditions, it is not typically the first action taken in response to a seizure in an infant.
Choice C rationale
Hypocalcemia, or low calcium levels in the blood, can cause seizures in infants. Phenytoin, the medication given to the baby in the ambulance, is used to control seizures. Therefore, hypocalcemia could be the condition the infant is experiencing.
Choice D rationale
Monitoring the respiratory rate is an important part of assessing any patient’s condition, especially an infant who has had a seizure. However, it does not specify the condition the infant is most likely experiencing.
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