Ambulatory Care Test Ambulatory Care Clinical Data Interpretation 5

Question 1

A patient's fasting glucose is 118 mg/dL on two separate occasions. How should this be classified?

Accepted Answer

Impaired fasting glucose (prediabetes)

Answer

Fasting plasma glucose between 100-125 mg/dL on two occasions meets the ADA criteria for impaired fasting glucose, classified as prediabetes.

Question 2

A 30-year-old woman's CBC shows hemoglobin 9.8 g/dL, MCV 72 fL, and serum ferritin 6 ng/mL. What is the most likely diagnosis?

Accepted Answer

Iron deficiency anemia

Answer

Microcytic anemia (low MCV) combined with very low serum ferritin (<12 ng/mL) is diagnostic of iron deficiency anemia.

Question 3

A 24-hour urine protein is 3.8 g/day in a patient with new-onset edema and serum albumin of 2.2 g/dL. What syndrome does this represent?

Accepted Answer

Nephrotic syndrome

Answer

Nephrotic syndrome is defined by proteinuria >3.5 g/day, hypoalbuminemia, edema, and hyperlipidemia, all of which are present in this patient.

Question 4

A patient on lithium therapy has a trough serum lithium level of 1.6 mEq/L. What finding would you expect?

Accepted Answer

Toxic level; hold lithium and evaluate for toxicity symptoms

Answer

Lithium levels above 1.5 mEq/L are considered toxic, with symptoms including tremor, ataxia, confusion, and in severe cases, seizures or cardiac arrhythmias.

Question 5

A patient's ECG shows a corrected QT interval (QTc) of 510 ms after starting azithromycin. What is the primary concern?

Accepted Answer

Increased risk of torsades de pointes ventricular tachycardia

Answer

A QTc above 500 ms significantly increases the risk of torsades de pointes, a potentially fatal polymorphic ventricular tachycardia.

Ambulatory Care Test Practice Test

Ambulatory Care Test Practice Test

Ambulatory Care Test Ambulatory Care Clinical Data Interpretation 5