A client with a cold sore on the lip has been diagnosed with herpes simplex virus. Which neurological disorder may the client be at risk for in the future?

A. Atrial fibrillation is characterized by irregularly irregular rhythms with no distinct P-waves. Instead, it has a chaotic baseline with fibrillatory waves. The ventricular response can be irregular and variable. The description provided (regular P-waves in a sawtooth formation) does not match the typical appearance of atrial fibrillation, which lacks regular P-waves and has an irregular rhythm.
B. Atrial flutter is characterized by regular, sawtooth-shaped P-waves known as "F-waves" or "flutter waves." The classic pattern is referred to as "F-waves" with a "sawtooth" appearance, often seen in the inferior leads (II, III, aVF). The atrial rate is typically between 240 to 340 beats per minute, which fits the rate of 260 beats per minute in the description. The ventricular rate can be regular or irregular, depending on the degree of AV node conduction. A

C. Unstable angina is a clinical diagnosis of chest pain due to myocardial ischemia. It is not associated with specific ECG findings related to the P-wave morphology or rate. The ECG findings described do not correspond to unstable angina, which would typically present with ST-segment changes or other signs of myocardial ischemia rather than a specific P-wave pattern.
D. Premature atrial contractions (PACs) are early beats originating from the atria that interrupt the normal rhythm. They usually present as a single early beat with a different morphology of the P-wave compared to the sinus P-waves, but do not result in a regular sawtooth pattern or a sustained rhythm at high rates like the one described.

A. Prednisone, a corticosteroid, is more commonly associated with fluid retention rather than fluid volume deficit. Fluid volume deficit would generally be a concern with diuretics or other medications that increase urine output. Prednisone can lead to fluid retention and edema, not a deficit.
B. Prednisone is more likely to cause weight gain rather than weight loss. Corticosteroids can increase appetite and lead to fluid retention, both of which contribute to weight gain. Significant weight loss is not a typical side effect of prednisone.
C. Prednisone and other corticosteroids can cause sodium retention, which can lead to fluid retention and hypertension. Sodium retention is a common side effect of corticosteroids, and it contributes to the fluid retention and potential weight gain associated with these medications.
D. Prednisone can cause thinning of the skin rather than thickening. Long-term use of corticosteroids can lead to skin thinning, increased bruising, and easy tearing of the skin. Thickening of the skin is not a common side effect of prednisone.