A client is seen in a primary care provider's office. The client has gradually developed a stooped posture, shuffling gait, and a lack of facial expressions. Which medication should the nurse anticipate will be prescribed to treat these symptoms?

A. Peaked T-waves and a widened QRS complex on an ECG are often signs of hyperkalemia, which is an elevated potassium level in the blood. This can be a serious complication of acute kidney injury (AKI), especially in the oliguric phase when the kidneys are unable to effectively excrete potassium.A
B. While fluid management is important in AKI, administering a bolus of normal saline is not the first priority in the presence of suspected hyperkalemia. The primary concern is to address the electrolyte imbalance.

C. Administering potassium chloride would worsen hyperkalemia and should be avoided.
D. Kayexalate is a medication used to treat hyperkalemia by exchanging sodium ions for potassium ions in the gastrointestinal tract. However, checking the potassium level is the first step in confirming the diagnosis and determining the appropriate treatment.

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.