WGU D115 OA and PRE-OA Actual Exam Questions with Verified Answers | Latest 2026 Exam | Includes PCC2 Exam Q & As

WGU D115 OA and PRE-OA Actual Exam Questions with Verified Answers | Latest 2026 Exam 1. A 56-year-old patient presents to an emergency department with acute chest pain on the day after the funeral of a spouse. Diagnostic results reveal ST elevation and elevated troponins. What is the probable diagnosis of these symptoms? A. ST-elevation myocardial infarction from coronary thrombosis B. Unstable angina C. Takotsubo cardiomyopathy D. Pericarditis ANS: C Acute chest pain with ST elevation and elevated troponins triggered by intense emotional stress, typically without a significant coronary occlusion on catheterization, is characteristic of Takotsubo (stress) cardiomyopathy. A classic STEMI would show a thrombotic coronary occlusion as the driver, unstable angina does not typically elevate troponins, and pericarditis produces diffuse ST elevation with a different, often positional or pleuritic, pain quality. 2. A patient, admitted with type 1 diabetes, asks the nurse what "type 1" means. Which response by the nurse is accurate? a. "There is decreased insulin secretion, cellular resistance to insulin that is produced, or both." B. "The body produces autoantibodies that destroy beta cells in the pancreas." C. "An increased amount of adipose tissue has led to an insufficient amount of insulin being produced." D. "The insulin being made is not used by the tissues properly, leading to high blood sugar." ANS: B 3. A 30-day-old infant presents to the emergency room with decreased oral intake, decreased urine output, and a fever of 101.8. The infant is admitted for further evaluation with a workup to include a blood culture, a urine culture, a spinal tap, and a chest X-ray. Which issue of innate immunity, as it relates to neonates, is of concern? A. Delayed transfer of maternal IgG B. Reduced neutrophil count at birth C. Diminished T-cell mediated immunity D. Relative deficiency of factor B ANS: D Neonates have a relative deficiency of factor B, a component of the alternative complement pathway, which impairs opsonization and increases susceptibility to serious bacterial infection. Maternal IgG transfer and T-cell function are adaptive immunity issues, not innate, and neutrophil counts are typically normal or elevated during neonatal infection rather than reduced. 4. A 12-year-old African American patient presents with unilateral eye swelling and lower lip swelling. The patient's parent reports that the swelling is spontaneous and resolves over several days. The patient does not have complaints of fever, hives, or vomiting. Serum lab results show hyperactivation of three plasma protein systems. The APRN suspects hereditary angioedema. What is the cause of the genetic defect suspected in this situation? A. C1 esterase inhibitor B. Complement C3 deficiency C. IgE-mediated mast cell degranulation D. Upregulation of bradykinin receptors ANS: A Hereditary angioedema results from a deficiency or dysfunction of C1 esterase inhibitor, which normally regulates the complement, kinin, and coagulation cascades; its absence allows unchecked bradykinin generation and swelling. The condition is not IgE-mediated, which distinguishes it from allergic angioedema, and it is not primarily a C3 deficiency or a receptor-level abnormality. 5. The parent of a child diagnosed with Down syndrome expresses concerns about the child's recurrent respiratory tract infections to an advanced practice registered nurse (APRN). The infections have occurred regularly since birth. What should the APRN tell the parent is the underlying cause of this illness? A. Selective IgA deficiency B. Gastroesophageal reflux disease causes aspiration of thin fluids. C. Structural abnormality of the tracheoesophageal septum D. Primary ciliary dyskinesia ANS: B Hypotonia and anatomic differences common in Down syndrome predispose children to GERD, and aspiration of refluxed fluid into the airway is a well-recognized driver of recurrent respiratory infections in this population. Selective IgA deficiency and ciliary dyskinesia are distinct genetic conditions not inherent to Down syndrome, and a tracheoesophageal septal abnormality would present as a structural anomaly detected in infancy, not recurrent infection over time. 6. A 36-year-old patient is being seen by an advanced practice registered nurse (APRN) in a primary care clinic for the first time. The patient reports feeling depressed due to a major life change. Additional symptoms include weight gain, sedentary activity, and insomnia. The APRN plans on providing the patient with several exercises to reduce the physiological effect of stress. Why is the APRN concerned about relieving this emotional response? A. It increases insulin sensitivity. B. It decreases cortisol secretion. C. It decreases glucose uptake. D. It decreases catecholamine release. ANS: C Sustained sympathetic activation from unresolved stress promotes insulin resistance, decreasing peripheral glucose uptake and raising the patient's risk of hyperglycemia, which is why the APRN prioritizes activity that counters this response. The other options describe effects that run in the opposite direction of what chronic stress actually produces. 7. An 80-year-old patient brings her grandchildren with her to a routine medical appointment. The patient has moderate chronic obstructive pulmonary disease (COPD) and is concerned about developing pneumonia because of its increased incidence at the senior center. What should the nurse practitioner recommend for this patient? A. Pneumococcal vaccination every year B. Daily prophylactic antibiotics C. Avoiding all contact with grandchildren during flu season D. Getting an annual influenza vaccine ANS: D Annual influenza vaccination reduces the risk of a viral respiratory infection triggering a COPD exacerbation and secondary pneumonia. Pneumococcal vaccination is important but is not repeated annually, daily prophylactic antibiotics are not standard practice for stable COPD, and restricting contact with family is not an evidence-based recommendation.