Free AGACNP Exam Questions That Helps Candidates Pass

When a patient is prescribed digoxin, it is essential to monitor heart rate. Digoxin has a negative chronotropic effect, meaning it can slow the heart rate, which is useful in controlling atrial fibrillation but can lead to bradycardia. Monitoring the heart rate is critical to avoid potential toxicity. Serum potassium, creatinine, and blood pressure are also important but are secondary to heart rate monitoring.

The most appropriate next step is to order a urine culture before prescribing antibiotics to identify the causative organism and guide antibiotic therapy. Empiric antibiotic treatment may be started if the patient is severely ill, but a urine culture is essential for proper management. Prescribing antibiotics based on the history alone may not be as effective if the causative organism is resistant or different from previous infections.

For patients aged 50-80 with a 20-pack year smoking history, low-dose computed tomography (LDCT) is the recommended screening test for lung cancer. This method has been shown to reduce lung cancer mortality in high-risk populations. Chest X-ray and sputum cytology are no longer recommended for lung cancer screening, and pulmonary function tests assess respiratory function but do not screen for cancer.

The first parameter to adjust when increasing carbon dioxide levels is the respiratory rate. Increasing the respiratory rate will enhance the clearance of CO2 by allowing more frequent breaths. Tidal volume may also need adjustment depending on the patient’s condition, but altering the respiratory rate is the first step in addressing elevated CO2 levels. Oxygen concentration and PEEP are not directly related to CO2 elimination.

The patient’s symptoms and ultrasound findings are consistent with acute cholecystitis, which is an inflammation of the gallbladder, often caused by obstruction due to gallstones. This condition is characterized by right upper quadrant pain, fever, and nausea, along with elevated liver function tests. Acute pancreatitis and peptic ulcer disease present with different clinical features, and hepatitis typically presents with jaundice.