A client has been treated for uncontrolled atrial fibrillation with cardioversion. Following the cardioversion, which assessment finding indicates to the nurse that the desired outcome was achieved?
Normal sinus rhythm (NSR) at 84 beats/minute.
Regular rhythm with consistent pacemaker capture.
Return of elevated ST segment to the baseline.
Increased frequency of QRS complexes.
The Correct Answer is A
A. Normal sinus rhythm (NSR) at 84 beats/minute. The goal of cardioversion for atrial fibrillation (AFib) is to restore a normal sinus rhythm (NSR). NSR indicates that the atria and ventricles are depolarizing in a coordinated manner, reducing the risk of thromboembolism, stroke, and hemodynamic instability. A heart rate of 84 beats/minute is within the normal range, confirming the success of the procedure.
B. Regular rhythm with consistent pacemaker capture. Cardioversion is used to restore normal rhythm in AFib, not to manage pacemaker function. A pacemaker is not part of standard AFib cardioversion unless the client has underlying conduction issues requiring pacing.
C. Return of elevated ST segment to the baseline. ST elevation suggests acute myocardial infarction (MI), which is unrelated to atrial fibrillation or cardioversion. Cardioversion does not treat ST elevation or myocardial ischemia, making this an incorrect indicator of success.
D. Increased frequency of QRS complexes. An increase in QRS frequency suggests tachycardia, which would indicate treatment failure rather than success. The goal of cardioversion is to restore a normal, controlled heart rate and rhythm, not to increase the number of ventricular contractions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Respirations are shallow, labored, and 14 breaths/minute. A C5 spinal cord injury can impair diaphragmatic function and respiratory effort, leading to respiratory failure. Shallow and labored breathing suggests that the client is experiencing respiratory compromise, which can quickly progress to hypoventilation, hypoxia, and respiratory arrest. Immediate intervention, such as assisted ventilation or intubation, may be necessary to maintain adequate oxygenation and prevent further complications.
B. Has flaccid upper and lower extremities. Flaccid paralysis is an expected finding immediately after a high spinal cord injury due to spinal shock. While this condition requires ongoing monitoring, it is not an immediate life-threatening emergency like respiratory distress.
C. Blood pressure is 110/70 mm Hg and the apical heart rate is 68 beats/minute. These vital signs are within normal limits and do not indicate hemodynamic instability. Neurogenic shock, which can occur with high spinal injuries, typically presents with hypotension and bradycardia, but this client’s current BP and HR are stable.
D. Is unable to feel sensation in the arms and hands. Loss of sensation is expected with a cervical spinal cord injury due to nerve pathway disruption. While this finding is significant, it does not require immediate intervention compared to respiratory distress, which is the most urgent priority.
Correct Answer is []
Explanation
Answer:
Potential Condition:
Acute Adrenal Crisis
- The client has a history of Addison’s disease (chronic steroid use) and recent illness with vomiting, leading to decreased oral intake and medication noncompliance.
- Symptoms such as hypotension (80/50 mmHg), tachycardia (115 bpm), confusion, nausea, vomiting, and abdominal pain are classic signs of acute adrenal insufficiency.
Actions to Take:
Bolus Intravenous Fluids
- Fluid resuscitation with 0.9% normal saline is critical to restore intravascular volume and correct hypotension due to adrenal insufficiency.
Check Blood Glucose
- Hypoglycemia is a common complication of adrenal crisis due to cortisol deficiency, requiring close monitoring and possible glucose administration.
Parameters to Monitor:
Blood Pressure
- Hypotension is a hallmark of adrenal crisis and must be monitored closely to assess response to fluid resuscitation and steroid therapy.
Electrolytes
- Clients with adrenal crisis often have hyponatremia and hyperkalemia due to aldosterone deficiency, requiring frequent electrolyte monitoring.
Incorrect Choices:
Potential Conditions:
- Ketoacidosis: More common in diabetes, presents with high blood glucose and ketonuria.
- Diabetes Insipidus: Causes polyuria and dehydration but lacks hypotension and hyperkalemia.
- Myxedema: Linked to hypothyroidism, causing bradycardia and hypothermia, not hypotension and hyperkalemia.
Actions to Take:
- Hold hydrocortisone dose: Steroid replacement is necessary, not withholding it.
- Collect urine for a urinalysis: Not a priority; adrenal crisis is diagnosed via history, symptoms, and labs.
- Change intravenous fluids to 0.45%: Hypotension requires 0.9% normal saline, not hypotonic fluids.
Parameters to Monitor:
- Urine output: Useful but less critical than blood pressure and electrolytes in adrenal crisis.
- Thyroid stimulating hormone: Relevant for hypothyroidism, not adrenal insufficiency.
- Heart rate: Tachycardia is expected but is not the most critical indicator of improvement.
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