1. A 62-year-old with a 40-pack-year smoking history presents with chronic exertional dyspnea. He was prescribed an albuterol inhaler previously but reports minimal relief. His physical exam shows a prolonged expiratory phase. Which test is most appropriate to establish the diagnosis?
Answer: D
To differentiate COPD from asthma in a patient with a significant smoking history, pre- and post-bronchodilator spirometry is required to identify fixed airflow obstruction. Serial peak expiratory flow monitoring cannot reliably distinguish between the irreversible obstruction of COPD and the reversible obstruction of asthma. Fractional exhaled nitric oxide testing evaluates eosinophilic airway inflammation in asthma but does not diagnose COPD. A six-minute walk assessment measures functional capacity but cannot diagnose the underlying obstructive pathology.
2. A 62-year-old with a 40-pack-year smoking history presents with a chronic daily cough. Pre-bronchodilator spirometry shows an FEV1/FVC ratio of 0.65. After administering albuterol, the FEV1 increases by 150 mL (8%), and the post-bronchodilator FEV1/FVC ratio of 0.68 is recorded. Based on these findings, how should the nurse practitioner interpret the data?
Answer: A
A post-bronchodilator FEV1/FVC ratio less than 0.70 confirms the presence of persistent airflow limitation, which is the diagnostic hallmark of COPD. Although the patient had a slight increase in FEV1, it did not meet the criteria for asthma reversibility (at least 12% and 200 mL). Therefore, adult-onset asthma is incorrect. Restrictive disease is ruled out because the FVC is normal, and a mixed pattern would require both a low FEV1/FVC ratio and a significantly reduced FVC. The clinical presentation and spirometry data clearly point to COPD.
3. An 8-year-old child experiences mild wheezing about once a month after playing outside. The parents strongly prefer no daily maintenance medication for their child. According to GINA guidelines, what is the most appropriate symptom relief strategy?
Answer: C
For children aged 6 to 11 with infrequent asthma symptoms whose parents decline daily controllers, GINA recommends taking a low-dose inhaled corticosteroid whenever an as-needed SABA is used. Option A is contraindicated because SABA-only therapy increases the risk of severe exacerbations. Option B is the preferred track for adults and adolescents aged 12 and older, but it is not the primary recommendation for young children. Option D represents the preferred Step 2 approach, but it conflicts with the parents' explicit preference to avoid daily maintenance medications.
4. A 64-year-old male is prescribed a LAMA/LABA/ICS metered-dose inhaler but reports no improvement in his daily dyspnea. During a clinic demonstration, you observe him inhaling rapidly before actuating the device.
Answer: A
The patient is demonstrating poor hand-breath coordination, which significantly reduces medication delivery to the lungs. Prescribing a valved holding chamber or spacer is the most appropriate intervention to correct this mechanical issue. Option A directly solves the delivery problem. Option B is incorrect because a nebulizer is a more complex, expensive step-up that is unnecessary if a spacer can resolve the issue. Option C is inappropriate because increasing the dose does not fix the underlying poor technique. Option D adds systemic medication without addressing the primary inhaler misuse.
5. A 22-year-old patient with exercise-induced bronchoconstriction reaches for their albuterol metered-dose inhaler which has been sitting unused in a gym bag for three weeks.
Answer: B
An albuterol metered-dose inhaler that has not been used for three weeks requires priming. The patient must spray the inhaler into the air to ensure the metering chamber fills with the correct dose of medication rather than just propellant. Option A is incorrect because MDIs require slow, deep inhalations, not rapid ones. Option C is unsafe; exhaling into any inhaler mouthpiece introduces moisture that can clog the device. Option D is unnecessary for modern HFA inhalers, though it was historically used for older CFC inhalers in cold environments.
6. A 30-year-old male on low-dose ICS reports an ACT score of 15. He describes a chronic nighttime cough and frequent heartburn that worsens after eating late meals.
Answer: C
An ACT score of 15 reflects very poorly controlled asthma. However, the patient's specific presentation of a chronic nighttime cough paired with frequent heartburn strongly points to gastroesophageal reflux disease (GERD) as a comorbid asthma trigger. Treating the underlying GERD with a proton pump inhibitor is necessary to reduce airway irritation and improve his ACT score. Stepping up to medium-dose ICS-LABA maintenance therapy ignores the primary trigger and exposes him to higher medication doses unnecessarily. Adding a daily oral leukotriene modifier medication or switching to a long-acting muscarinic antagonist inhaler will likely fail to resolve the nighttime cough because they do not address the reflux causing the microaspiration and bronchospasm.
7. A 24-year-old female with asthma reports using her albuterol inhaler four times a week for wheezing. She currently takes low-dose inhaled budesonide daily. She wakes up coughing twice a month. What is the most appropriate medication change?
Answer: B
The patient has uncontrolled asthma based on using her rescue inhaler more than twice a week. Current guidelines strongly recommend stepping up to an ICS-formoterol combination for both daily maintenance and as-needed relief (SMART therapy). Option B provides this preferred, evidence-based approach. Option C increases the inhaled corticosteroid dose but misses the rapid-acting bronchodilator benefit of formoterol as a reliever. Option A adds a long-acting muscarinic antagonist, which is generally reserved for more severe asthma after long-acting beta-agonists have been optimized. Option D adds a leukotriene receptor antagonist, which is considered less effective than stepping up to an inhaled corticosteroid and long-acting beta-agonist combination.
8. A 32-year-old male with persistent asthma has been well-controlled for over a year on a branded fluticasone-salmeterol inhaler. He recently lost his job and requests a cheaper alternative. His FEV1 is 92% of predicted. Which action represents the most appropriate cost-effective prescribing strategy?
Answer: C
This patient has maintained excellent asthma control for over a year with normal lung function, which makes him an ideal candidate for step-down therapy. Stepping down to a low-dose generic inhaled corticosteroid like fluticasone monotherapy maintains essential airway inflammation control while significantly reducing his out-of-pocket costs following his job loss. Switching to albuterol monotherapy is inappropriate because short-acting beta-agonists alone do not control the underlying inflammation of persistent asthma. Continuing a branded combination inhaler like mometasone-formoterol ignores his financial distress and provides more medication than he currently needs. Montelukast is available as a cheap generic, but it is less effective than inhaled corticosteroids for persistent asthma maintenance.
9. A 70-year-old with cor pulmonale and a COPD exacerbation has been taking high-dose furosemide at home. An arterial blood gas reveals pH 7.44, HCO3 36 mEq/L, and PaCO2 55 mmHg. Which acid-base disturbance best describes this patient's presentation?
Answer: D
This arterial blood gas demonstrates a mixed acid-base disorder. The elevated PaCO2 (55 mmHg) indicates a chronic respiratory acidosis typical of severe COPD. However, the pH is on the alkalemic side of normal (7.44), and the bicarbonate is markedly elevated (36 mEq/L). This degree of bicarbonate elevation exceeds normal renal compensation for chronic hypercapnia and points to a concurrent metabolic alkalosis, likely a contraction alkalosis caused by the high-dose furosemide. Option A is incorrect because the pH is not acidemic, meaning it is not an uncompensated acute respiratory acidosis. Option B is incorrect because a purely compensated respiratory acidosis would typically have a pH closer to 7.35–7.38. Option C is incorrect because the primary disturbances are alkalemic and hypercapnic, not an acute metabolic acidosis.
10. During a follow-up for a chronic bronchitis exacerbation, a 60-year-old female rates her readiness to quit as a 5 on a 1-to-10 scale. Which statement by the FNP best utilizes the readiness ruler technique to foster motivation?
Answer: D
Using a readiness ruler is a core motivational interviewing technique. Asking what it would take to move to a slightly higher number elicits change talk and helps the patient identify her own barriers and solutions. Asking why she didn't choose a higher number (A) often provokes defensive sustain talk. Telling her a five means she isn't ready (B) or demanding a ten (C) violates the principle of patient autonomy and collaboration.
11. A forty-two-year-old patient with a ten pack-year history of cigarette smoking is diagnosed with COPD after spirometry. A recent chest radiograph reveals basilar emphysema. Which diagnostic action is recommended by current guidelines?
Answer: B
The World Health Organization and GOLD guidelines recommend testing all patients with a COPD diagnosis at least once for alpha-1 antitrypsin deficiency. This is especially critical for patients who present with atypical features, such as a young age of onset, a relatively low smoking history, and the presence of basilar emphysema on imaging. Option A is incorrect because a sweat chloride test is used to diagnose cystic fibrosis, which typically presents with bronchiectasis and recurrent childhood infections, not isolated basilar emphysema. Option C is incorrect because a bronchoscopy with biopsy is an invasive procedure used to evaluate suspected malignancies or interstitial lung diseases, not to diagnose a genetic enzyme deficiency. Option D is incorrect because high-dose oral corticosteroids are not a maintenance treatment for COPD or alpha-1 antitrypsin deficiency.
12. A 62-year-old woman reports four days of worsening fever and cough. She has a history of severe chronic obstructive pulmonary disease and currently requires supplemental oxygen at baseline. A rapid influenza swab is positive. Which intervention is most appropriate?
Answer: D
While antiviral therapy is typically most effective when initiated within 48 hours of symptom onset, it is still strongly recommended for patients with severe illness or high-risk comorbidities like COPD, regardless of symptom duration. Oseltamivir is the preferred agent in this scenario. Zanamivir is strictly contraindicated due to her underlying airway disease, as it can provoke bronchospasm. Baloxavir is not currently recommended for late presentation or severe disease. Relying on supportive care alone ignores her significant complication risk and potential for clinical deterioration.
13. A 24-year-old male presents with a productive cough for seven days. He reports feeling increasingly fatigued. His vital signs reveal a temperature of 101.8°F and a heart rate of 98 bpm. Auscultation of the lungs demonstrates localized crackles in the right lower lobe that do not clear with coughing. Which of the following is the most likely primary diagnosis?
Answer: A
This patient presents with classic signs of community-acquired pneumonia, which is distinguished from bronchitis by systemic signs like fever and focal lung findings. The localized crackles indicate alveolar consolidation, a hallmark of pneumonia. Uncomplicated acute bronchitis typically presents with a cough lasting one to three weeks but lacks high fever or focal crackles; any rhonchi present usually clear with a cough. Post-viral reactive bronchospasm and acute asthma exacerbation would present with diffuse wheezing rather than localized crackles and would not typically cause a significant fever. Recognizing these focal lung findings is essential for the advanced practice registered nurse to establish the correct diagnosis and initiate appropriate antibiotic therapy rather than supportive care alone.
14. A 55-year-old male presents for a follow-up. He reports daily dyspnea on exertion with a mMRC score of 2. He has had zero exacerbations in the past year. He currently uses albuterol as needed but remains symptomatic.
Answer: A
This patient belongs to GOLD Group B due to his high symptom burden and low exacerbation history. The standard of care is to initiate dual bronchodilation with a LAMA and LABA. Option A directly addresses his symptoms without unnecessary risks. Option B and Option C are incorrect because inhaled corticosteroids are not indicated for low exacerbation risk and should never be used as monotherapy in COPD. Option D is suboptimal because short-acting agents do not provide adequate 24-hour symptom control for Group B patients.
15. A 16-year-old female reports daily daytime wheezing that mildly limits her physical activity. She wakes up coughing twice a week. Spirometry reveals an FEV1 of 72% of predicted. What is the most accurate primary diagnosis?
Answer: B
The presence of daily symptoms and an FEV1 between 60% and 80% of predicted are classic indicators of moderate persistent asthma. Mild persistent asthma would present with symptoms more than twice a week but not daily, and an FEV1 greater than 80%. Severe persistent asthma requires an FEV1 below 60% and symptoms occurring throughout the day. Intermittent asthma is incorrect because her symptoms are far too frequent.
