Question 1 of 25
Paul, 73, 2 weeks post-PCI, on aspirin+clopidogrel, reports black stools and dizziness; BP 96/60. Based on symptoms, what is next best step?
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USMLE Step 3
Practice Test 5 for USMLE Step 3: real questions and explanations from the Varsity Tutors practice-test pool.
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Question 1 of 25
Paul, 73, 2 weeks post-PCI, on aspirin+clopidogrel, reports black stools and dizziness; BP 96/60. Based on symptoms, what is next best step?
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Paul, 73, 2 weeks post-PCI, on aspirin+clopidogrel, reports black stools and dizziness; BP 96/60. Based on symptoms, what is next best step?
Explanation: This question tests knowledge of chronic coronary artery disease management, focusing on appropriate risk modification and treatment strategies. Chronic coronary disease management involves optimizing medical therapy (such as antiplatelets, statins, beta-blockers) and lifestyle modifications (diet, exercise, smoking cessation) to prevent progression and complications. In this scenario, the patient early post-PCI on DAPT presents with black stools and hypotension, suggesting possible GI bleeding. The correct choice reflects urgent evaluation for GI bleeding while coordinating antiplatelet management, aligning with guidelines for balancing bleeding and thrombotic risks. A common distractor might suggest reassuring and continuing without evaluation, which risks missing serious hemorrhage. To help students: Encourage reviewing the latest clinical guidelines and understanding the rationale behind recommendations. Practice applying guidelines to different clinical scenarios to enhance decision-making skills.
A 68-year-old woman with generalized anxiety disorder and panic disorder has been taking alprazolam 1 mg three times daily for 15 years. She now wishes to discontinue the medication due to concerns about cognitive side effects and fall risk. Previous attempts to taper the alprazolam directly have resulted in severe withdrawal symptoms.
Which of the following is the most appropriate long-term management strategy to discontinue her benzodiazepine use?
Explanation: For patients on long-term, high-dose, short-acting benzodiazepines like alprazolam, direct tapering is often difficult due to inter-dose withdrawal. The preferred method is to switch the patient to an equivalent dose of a long-acting benzodiazepine, such as diazepam or clonazepam. The long half-life of these agents provides a smoother, more tolerable withdrawal course. The taper should then proceed very slowly, often over months, to minimize withdrawal symptoms. A weekly 0.5 mg reduction of alprazolam is too rapid and likely to fail. Inpatient phenobarbital is for acute, severe withdrawal, not outpatient continuity. Adding buspirone does not address the physiological dependence on alprazolam.
A 21-year-old man with cannabis use disorder and associated anxiety reports daily use of high-potency cannabis concentrates for the past two years. He is motivated to quit and is starting a new job that requires drug testing. He is concerned about managing withdrawal symptoms, particularly irritability and insomnia.
Which of the following represents the most effective evidence-based approach for this patient's long-term recovery?
Explanation: The cornerstones of treatment for cannabis use disorder are psychosocial interventions. A combination of cognitive-behavioral therapy (CBT) to develop coping skills and motivational interviewing (MI) to enhance and maintain motivation for change has the strongest evidence base for promoting long-term abstinence. While some medications have been studied for cannabis withdrawal (e.g., gabapentin, N-acetylcysteine), none have shown robust efficacy for long-term relapse prevention or are considered first-line. Prescribing benzodiazepines is generally avoided due to the risk of substituting one addictive substance for another. A structured taper is not a standard evidence-based approach.
A 45-year-old man with opioid use disorder, stable on buprenorphine/naloxone 16/4 mg sublingually once daily for the past two years, is scheduled for an elective laparoscopic cholecystectomy in two weeks. He is concerned about how his postoperative pain will be managed. He has no other medical conditions.
Which of the following is the most appropriate perioperative management plan for this patient's buprenorphine therapy?
Explanation: The current standard of care for patients on chronic buprenorphine therapy undergoing surgery is to continue the medication through the perioperative period. Buprenorphine's high affinity for the mu-opioid receptor can interfere with the efficacy of full agonists, but this effect can be overcome with higher doses if needed. Discontinuing buprenorphine significantly increases the risk of relapse and overdose. A multimodal approach, continuing the maintenance dose (which can be split to provide more consistent analgesia) and adding non-opioid analgesics (e.g., NSAIDs, acetaminophen) and judicious use of short-acting full agonists for breakthrough pain, is the recommended strategy.
A 34-year-old man with fistulizing Crohn disease has been receiving infliximab infusions every 8 weeks for 18 months with good effect. Two weeks after his most recent infusion, he develops symmetric polyarthritis of his hands and knees and a faint malar rash. He denies fever. Laboratory studies show a newly positive antinuclear antibody (ANA) and anti-double-stranded DNA (anti-dsDNA) antibodies.
Which of the following is the most likely diagnosis?
Explanation: The clinical presentation of arthritis, malar rash, and new-onset positive ANA and anti-dsDNA antibodies in a patient treated with an anti-TNF agent like infliximab is characteristic of drug-induced lupus erythematosus. While serum sickness-like reactions can occur, they are less likely to be associated with the specific seroconversion to anti-dsDNA. Crohn's-associated arthritis is typically seronegative. New-onset rheumatoid arthritis is less likely given the temporal relationship to the drug and the specific autoantibody profile.
A 17-year-old female with type 1 diabetes since age 5 is being seen in your pediatric practice. She will be attending college in another state in 6 months and will need to transition to an adult endocrinologist. Her glycemic control has been consistently poor (HbA1c >9.0%), and she has signs of early-stage retinopathy. She expresses significant anxiety about leaving her pediatric team.
Which of the following actions by her current physician is most likely to result in a successful transition to adult care?
Explanation: The transition from pediatric to adult care is a high-risk period for patients with chronic illness, often associated with poor follow-up and worsening outcomes. For a high-risk patient like this, a structured handoff is crucial. A 'warm handoff,' such as a joint appointment or a direct conversation between the pediatric and adult providers, has been shown to improve transition success. It facilitates the transfer of complex medical information, establishes a relationship with the new provider, and helps alleviate patient anxiety, addressing the key barriers to a successful transition.
A 42-year-old woman is undergoing an elective laparoscopic cholecystectomy. Shortly after the induction of anesthesia, her blood pressure rises to 220/130 mmHg and her heart rate to 140/min. The procedure is aborted. After she is stabilized, she mentions having had episodic headaches, sweating, and palpitations for the past year. Which of the following is the most appropriate initial step in her diagnostic workup?
Explanation: The patient's history of paroxysmal symptoms (headache, sweating, palpitations) combined with a severe hypertensive crisis triggered by anesthesia is highly suggestive of a pheochromocytoma. The initial step in diagnosis is biochemical confirmation of catecholamine excess. Measurement of plasma free metanephrines or 24-hour urinary fractionated metanephrines and catecholamines are the screening tests with the highest sensitivity. Anatomic imaging with CT or MRI should only be performed after biochemical evidence confirms the diagnosis, in order to locate the tumor.
A 35-year-old woman is 4 weeks post-deceased donor kidney transplant. She presents to the clinic with a 3-day history of low-grade fever, malaise, and tenderness over the graft site in her right iliac fossa. Her urine output has decreased over the past 24 hours. Laboratory studies show her serum creatinine has risen from a baseline of 1.2 mg/dL to 2.8 mg/dL. Her tacrolimus level is within the therapeutic range. What is the most likely diagnosis?
Explanation: The clinical presentation of fever, allograft tenderness, and an acute rise in serum creatinine within the first few months after transplantation is classic for acute cellular (T-cell mediated) rejection. Delayed graft function occurs immediately post-transplant and is characterized by the need for dialysis in the first week. While a UTI must be ruled out, the graft tenderness makes rejection more likely. Tacrolimus toxicity can cause a rise in creatinine, but it is typically not associated with fever and tenderness, and her drug level is therapeutic.
A 15-year-old is undergoing a pre-participation physical evaluation for basketball. He is asymptomatic. On cardiac examination, a grade 2/6 systolic ejection murmur is heard at the left upper sternal border. The murmur intensity decreases when he moves from a supine to a standing position and also decreases with the Valsalva maneuver.
Which of the following is the most appropriate next step in management?
Explanation: The characteristics of this murmur (systolic, grade ≤2, decreases with standing/Valsalva) are classic for an innocent, or functional, pulmonary flow murmur. These murmurs are common in adolescents and are benign. Maneuvers that decrease venous return to the heart, such as standing or Valsalva, decrease the intensity of innocent flow murmurs. In contrast, the murmur of hypertrophic cardiomyopathy (a key concern in sports physicals) would increase in intensity with these maneuvers. Given the benign features, the patient can be cleared for sports without further workup. (B) Restriction is unnecessary for a benign murmur and causes undue anxiety. (C) Referral to cardiology and further testing is indicated only if the murmur has worrisome features (e.g., diastolic, harsh, grade ≥3, associated with a click, or increases with standing/Valsalva). (D) An ECG is not required for a murmur with clearly benign features on auscultation.
A 72-year-old woman with end-stage idiopathic pulmonary fibrosis (FVC 35% predicted, DLCO 25% predicted) is managed with palliative home oxygen and low-dose morphine for dyspnea. She is not a candidate for lung transplantation. During a clinic visit, she expresses profound anxiety about 'suffocating' as her disease progresses and asks what can be done. She has not previously had a formal goals-of-care discussion.
What is the most appropriate next step in this patient's care?
Explanation: This patient with advanced IPF is expressing existential distress and fears related to the end of life, which go beyond simple symptom management. The most appropriate step is to involve a specialized palliative care team. Palliative care focuses on improving quality of life by addressing physical, psychosocial, and spiritual suffering. A formal consultation can facilitate in-depth goals-of-care discussions, advance care planning, and provide expert management of complex symptoms and emotional distress. While adjusting medications might be part of the plan, the immediate need is for a comprehensive, interdisciplinary approach that a palliative care team can provide.
A 28-year-old transgender man (female-to-male) presents for a routine physical. He has been on testosterone therapy for 5 years. He has not undergone a hysterectomy or oophorectomy. He reports being sexually active with men and women. He has not had any gynecologic care since his transition.
Which preventive care screening is most indicated for this patient based on his anatomy and risk factors?
Explanation: Preventive screening should be based on the organs present, not on gender identity or hormone use. This patient has a cervix and is therefore at risk for cervical cancer from HPV infection. He requires cervical cancer screening according to the same guidelines as for cisgender women (i.e., starting at age 21). Testosterone therapy can make sample collection more difficult due to vaginal atrophy but does not eliminate the need for screening. He does not have a prostate, so PSA testing is irrelevant. Testosterone levels are monitored as part of his hormone therapy, not as a screening test for a new condition. Osteoporosis screening is not indicated at his age unless other specific risk factors are present.
A 65-year-old man is evaluated 2 months after an ischemic stroke of undetermined source (cryptogenic stroke). His inpatient workup was extensive, including a CT angiogram of the head and neck, a transthoracic echocardiogram, and 48 hours of inpatient cardiac telemetry, all of which were unremarkable. He is currently taking aspirin and a high-intensity statin.
In addition to continuing his current medical therapy, which of the following is the most appropriate next step to guide long-term secondary prevention?
Explanation: Up to 30% of ischemic strokes are cryptogenic. Paroxysmal atrial fibrillation (AF) is a common cause that is often missed on short-term monitoring. Guidelines recommend prolonged ambulatory cardiac monitoring (e.g., for 30 days) for patients with cryptogenic stroke to increase the diagnostic yield for AF. A diagnosis of AF would fundamentally change management from antiplatelet therapy to anticoagulation.
Olga, 68, stable CAD, HTN, smoker, wants diet advice; LDL 92 on statin, A1c 6.1. What lifestyle modification would most benefit her?
Explanation: This question tests knowledge of chronic coronary artery disease management, focusing on appropriate risk modification and treatment strategies. Chronic coronary disease management involves optimizing medical therapy (such as antiplatelets, statins, beta-blockers) and lifestyle modifications (diet, exercise, smoking cessation) to prevent progression and complications. In this scenario, the smoking patient with stable CAD, HTN, and prediabetes seeks diet advice, highlighting the need to prioritize high-impact changes. The correct choice reflects smoking cessation with pharmacotherapy and counseling, as it offers the greatest risk reduction and aligns with guidelines. A common distractor might suggest avoiding fruits and vegetables, which contradicts heart-healthy diet recommendations and limits nutritional benefits. To help students: Encourage reviewing the latest clinical guidelines and understanding the rationale behind recommendations. Practice applying guidelines to different clinical scenarios to enhance decision-making skills.
A 48-year-old combat veteran has been treated for post-traumatic stress disorder (PTSD) for the past 18 months. He completed a full course of Cognitive Processing Therapy (CPT) and has been maintained on sertraline 150 mg daily. For the past year, he has had minimal PTSD symptoms, is working full-time, and has re-engaged with his family. He asks how much longer he needs to take the sertraline.
What is the most appropriate recommendation regarding the duration of his pharmacotherapy?
Explanation: When you encounter PTSD medication management questions, focus on the evidence-based guidelines for maintenance therapy duration, especially in patients who've achieved stability through combined treatment approaches. This veteran represents an ideal treatment response - he's completed evidence-based psychotherapy (CPT), achieved symptom remission on sertraline, and maintained functional recovery for a full year. Current PTSD treatment guidelines recommend continuing effective pharmacotherapy for at least 12 months after achieving symptom stability before considering discontinuation. This approach minimizes relapse risk while the patient consolidates therapeutic gains. Option D is correct because it follows established guidelines: maintain stable patients on effective medication for at least 12 months post-stabilization before attempting a gradual taper. This patient has been stable for one year, so continuing for "at least another 12 months" ensures adequate consolidation time. Option A is overly conservative - indefinite treatment isn't necessary for all PTSD patients, especially those with good psychotherapy response and stable remission. Option B ignores the synergistic relationship between psychotherapy and pharmacotherapy; completing CPT doesn't eliminate the need for continued medication stabilization. Option C proposes premature discontinuation with inadequate tapering time - stopping effective PTSD medication after only one year of stability significantly increases relapse risk, and 2-4 weeks is too rapid for safe sertraline discontinuation. Remember: PTSD medication decisions should balance relapse prevention with treatment burden. Stable patients need at least 12 months of continued pharmacotherapy before considering discontinuation, regardless of psychotherapy completion.
A 78-year-old woman with a known history of atrial fibrillation for which she takes no anticoagulation is brought to the emergency department for a 3-hour history of sudden, severe pain in her right leg. On examination, the leg is cool and pale from the mid-shin down. She has profound weakness of dorsiflexion and plantar flexion of the foot, and sensation is diminished to light touch. Popliteal, dorsalis pedis, and posterior tibial pulses are absent on the right. After initiating an intravenous heparin infusion, which of the following is the most critical and time-sensitive next step in management?
Explanation: This patient has acute limb ischemia, likely from an arterial embolism from her untreated atrial fibrillation. This is a vascular emergency. The presence of motor and sensory deficits indicates a threatened limb (Rutherford class IIb), which requires immediate intervention to prevent irreversible tissue damage and amputation. After starting systemic anticoagulation with heparin, the most critical next step is an emergent consultation with vascular surgery for revascularization, which may involve catheter-directed thrombolysis or surgical embolectomy. Delaying this consultation for imaging could compromise limb viability. Time is tissue.
You are reviewing a pharmaceutical advertisement for a new combined oral contraceptive (COC). A 35-year-old G2P2 who is 3 weeks postpartum, exclusively formula-feeding, and smokes one pack of cigarettes per day asks for a prescription for this new pill. She has no other medical problems.
Explanation: According to the US Medical Eligibility Criteria for Contraceptive Use (MEC), smoking ≥15 cigarettes per day in a woman aged 35 years or older is a Category 4 condition (unacceptable health risk) for the use of combined hormonal contraceptives (COCs). This is due to the synergistic and markedly increased risk of cardiovascular events, including myocardial infarction, stroke, and venous thromboembolism. (A) Age ≥35 alone is only a Category 2 (advantages generally outweigh risks) for a non-smoker. (B) Being <21 days postpartum is Category 4 and 21-42 days is Category 3 for COCs due to VTE risk, but the smoking/age combination is a persistent, absolute contraindication. (D) Formula-feeding makes her eligible for hormonal contraception, unlike breastfeeding, which has its own considerations.
A federally qualified health center notes that its patient population has a significantly higher rate of uncontrolled type 2 diabetes compared to regional benchmarks. A needs assessment reveals that many patients struggle with food insecurity and live in neighborhoods without access to affordable fresh fruits and vegetables. Which of the following interventions is most likely to address this health disparity at a population level?
Explanation: This scenario highlights the impact of social determinants of health (food insecurity, food deserts) on clinical outcomes. The most effective population-level intervention directly addresses the identified socioeconomic barrier. Partnering with a food bank to provide on-site access to healthy food (B) directly mitigates the problem. While optimizing medications (A), providing education (C), and increasing monitoring (D) are components of diabetes care, they are less likely to be effective if patients lack the fundamental resources to follow dietary recommendations.
A 72-year-old obese man with type 2 diabetes is on postoperative day 7 after an exploratory laparotomy for a perforated diverticulum. While coughing, he feels a sudden 'popping' sensation in his abdomen, followed by a large gush of serosanguinous fluid from his midline incision. The nurse calls you to the bedside.
Explanation: This patient's presentation is classic for abdominal fascial dehiscence, a surgical emergency where the fascial closure fails, potentially leading to evisceration (protrusion of abdominal contents). The immediate action is to cover the wound with sterile, saline-soaked dressings to protect the underlying viscera from desiccation and contamination. The patient should be made NPO and prepared for an urgent return to the operating room for fascial re-closure. Imaging would delay definitive treatment, and an abdominal binder is insufficient. Antibiotics are important but not the most immediate life-saving step.
A 38-year-old woman with severe persistent asthma has poor symptom control despite adherence to a high-dose ICS/LABA, montelukast, and tiotropium. She has had two exacerbations requiring oral steroids in the past year. Her blood eosinophil count is 550 cells/µL, and her total IgE level is 80 IU/mL (normal < 100 IU/mL). She has no identifiable aeroallergen sensitization on skin testing.
Which biologic agent would be the most appropriate choice for this patient?
Explanation: This patient has severe, uncontrolled eosinophilic asthma, as evidenced by her elevated blood eosinophil count (≥300 cells/µL). Mepolizumab is an anti-interleukin-5 (IL-5) monoclonal antibody that specifically targets the eosinophilic pathway and is highly effective in this phenotype. Omalizumab is an anti-IgE therapy, which would be ineffective as her IgE is low and she has no identifiable allergies. Dupilumab (anti-IL-4/IL-13) and tezepelumab (anti-TSLP) are also options for eosinophilic asthma, but mepolizumab (along with reslizumab and benralizumab) is the most direct anti-eosinophilic agent. Given the classic eosinophilic phenotype without an allergic component, an anti-IL5 agent is the most targeted choice.
A 28-year-old man is 12 hours postoperative from an intramedullary nail fixation of a right tibial shaft fracture. He is using a patient-controlled analgesia (PCA) pump with morphine. The nurse calls to report that his pain is progressively worsening and is not relieved by additional PCA doses. On examination, the patient's lower leg is tense and exquisitely tender. He reports numbness between his first and second toes. Pain is dramatically increased with passive dorsiflexion of the toes.
Explanation: When you encounter progressive, severe post-operative pain in an extremity that's unresponsive to opioids, think compartment syndrome—a surgical emergency requiring immediate recognition and intervention. This patient presents classic signs of compartment syndrome: progressively worsening pain despite adequate analgesia, tense and tender lower leg, numbness in the first web space (deep peroneal nerve distribution), and severe pain with passive toe dorsiflexion. The mechanism involves increased pressure within fascial compartments that compromises circulation and nerve function. Tibial fractures, especially with intramedullary nailing, carry significant compartment syndrome risk due to bleeding and swelling in tight fascial spaces. Option D is correct because compartment syndrome requires emergency fasciotomy to relieve pressure and prevent permanent damage to muscles, nerves, and potentially limb loss. Every hour of delay increases morbidity. Option A is wrong because increasing morphine won't address the underlying pathophysiology and may mask important clinical signs. Pain from compartment syndrome is characteristically severe and opioid-resistant. Option B wastes critical time. While hardware complications exist, the clinical picture clearly suggests compartment syndrome, not implant failure. Option C is incorrect because ketorolac, though helpful for post-operative pain, cannot relieve compartment syndrome. NSAIDs may also increase bleeding risk in this setting. Study tip: Remember the "5 P's" of compartment syndrome: Pain (especially with passive stretch), Pressure, Pallor, Paresthesias, and Pulselessness. However, don't wait for all signs—severe pain with passive stretch is the earliest and most reliable indicator requiring immediate surgical consultation.
An 18-year-old man who underwent surgical repair for Tetralogy of Fallot at 6 months of age is seen for a transitional care visit before transferring to an adult cardiologist. He is asymptomatic and plays basketball casually. An echocardiogram shows moderate pulmonary regurgitation with mild right ventricular dilation and normal right ventricular systolic function. He has no residual ventricular septal defect.
Which of the following is the most important counseling point for this patient regarding his future health?
Explanation: When you encounter questions about congenital heart disease in adults, focus on the long-term sequelae and ongoing management needs rather than immediate acute concerns. Tetralogy of Fallot repair, while life-saving, creates predictable long-term complications. The surgical correction typically involves patch repair of the ventricular septal defect and relief of pulmonary stenosis, but this often results in pulmonary regurgitation. Over decades, chronic volume overload from pulmonary regurgitation leads to progressive right ventricular dilation, dysfunction, and eventually heart failure. Additionally, surgical scarring and chronic hemodynamic changes create substrate for arrhythmias, particularly ventricular tachycardia and sudden cardiac death. This patient already shows early signs with moderate pulmonary regurgitation and mild RV dilation, making choice A correct. Choice B is incorrect because current guidelines don't recommend routine endocarditis prophylaxis for repaired Tetralogy of Fallot without residual defects. Choice C represents a dangerous misconception—congenital heart disease patients require lifelong cardiac surveillance even after "successful" repair, as complications typically emerge decades later. Choice D is overly restrictive; while competitive athletics may require evaluation, recreational sports are generally safe with normal RV function and no arrhythmias. Study tip: For USMLE Step 3, remember that "repaired" congenital heart disease doesn't mean "cured." These patients face predictable late complications based on their specific anatomy and repair type. Focus on the long-term hemodynamic consequences rather than immediate post-operative concerns.
A 29-year-old G2P2 woman presents for a postpartum visit 4 months after an uncomplicated vaginal delivery. She missed her scheduled 6-week appointment due to childcare issues. She feels well overall and is using condoms for contraception. Her pregnancy was notable for a blood pressure of 135/85 mm Hg at 38 weeks, which resolved after delivery. She is not breastfeeding. In addition to a general physical and pelvic examination, which of the following is the most important assessment to perform at this visit?
Explanation: The postpartum period is a time of high risk for mood disorders, which can develop anytime within the first year after delivery. Screening for postpartum depression is a critical component of comprehensive postpartum care, regardless of when the visit occurs. While checking blood pressure is also important given her history of gestational hypertension, and contraception counseling is always relevant, screening for mental health is a key priority that is often missed. Uterine involution is complete by this time, and other tests are not indicated by her history.
A 68-year-old woman on rivaroxaban for unprovoked PE (18 months ago) presents for routine follow-up. Risk factors include obesity and prior DVT; no malignancy. She reports progressive fatigue and exertional dyspnea but no chest pain. She denies overt bleeding. Vitals: HR 92, BP 122/74, SpO2 97% RA. Labs: Hgb 8.9 g/dL (baseline 12.9), MCV 72 fL, platelets 310k, creatinine 1.1 mg/dL (eGFR 60 mL/min/1.73 m²), INR 1.2. Stool guaiac is positive. What is the most appropriate next step in management for this patient?
Explanation: This question tests the understanding of pulmonary embolism management and anticoagulation follow-up in a clinical context relevant to USMLE Step 3. The principle focus is on applying clinical guidelines for anticoagulation management and recognizing complications arising from therapy. In this scenario, factors such as the patient's progressive fatigue, exertional dyspnea, anemia, microcytosis, and positive stool guaiac are critical for decision-making. The correct answer addresses these factors by suggesting evaluation for occult gastrointestinal bleeding while reassessing anticoagulation risks and benefits, demonstrating the application of clinical guidelines for managing chronic bleeding on DOACs. A common distractor might suggest continuing rivaroxaban without investigation, which fails to consider the need to identify and address the bleeding source. To prepare for similar questions, students should focus on understanding anticoagulation management guidelines, recognize symptoms indicative of complications, and practice applying this knowledge to case scenarios.
A 28-year-old healthy woman presents with a six-month history of intermittent abdominal cramping, bloating, and loose stools, often worse with stress. She denies weight loss, rectal bleeding, or nocturnal symptoms. Physical examination is normal. A complete blood count, celiac serologies, and C-reactive protein are all within normal limits. Which of the following management strategies best demonstrates appropriate resource stewardship?
Explanation: The patient's presentation is classic for irritable bowel syndrome (IBS). In a young patient without alarm features, extensive and costly diagnostic testing is not indicated and represents poor resource stewardship. An empiric trial of dietary modification, such as a low-FODMAP diet, is a recommended, evidence-based, and cost-effective first-line management strategy. Colonoscopy (A) and CT scanning (D) are not indicated without alarm features due to cost and potential risks. Comprehensive stool panels (C) are not currently supported by evidence for the diagnosis or management of IBS.
A 29-year-old man with a well-documented history of both attention-deficit/hyperactivity disorder (ADHD), diagnosed in childhood, and severe methamphetamine use disorder, presents for care. He has been abstinent from methamphetamine for 18 months but continues to struggle significantly with ADHD symptoms that are impairing his work and relationships. He has had inadequate responses to atomoxetine and bupropion.
Which of the following is the most appropriate next step in managing his ADHD?
Explanation: When managing ADHD in patients with substance use disorder history, you need to balance the risk of relapse against the potential benefits of effective treatment. The key principle is that untreated ADHD itself can increase relapse risk, so withholding appropriate treatment may actually be counterproductive. Choice A is correct because this patient has several factors supporting stimulant use: 18 months of documented sobriety, failure of non-stimulant options (atomoxetine and bupropion), and significant functional impairment. Lisdexamfetamine is particularly appropriate as it's a prodrug that must be metabolized to become active, reducing abuse potential. The close monitoring and treatment agreement provide necessary safeguards. Choice B is wrong because short-acting stimulants like immediate-release methylphenidate actually have higher abuse potential due to their rapid onset and offset, making them less appropriate than long-acting formulations in patients with substance use history. Choice C represents an overly rigid approach. While stimulants do carry addiction risk, they're not absolutely contraindicated in recovered patients, especially when ADHD symptoms significantly impair functioning and non-stimulant treatments have failed. Choice D ignores the reality that behavioral interventions alone are often insufficient for moderate to severe ADHD, particularly when pharmacological options haven't been fully explored. While behavioral therapy should be part of treatment, it shouldn't be the sole intervention when more effective options exist. Remember for Step 3: Substance use history doesn't automatically eliminate medication options—focus on harm reduction principles, duration of sobriety, and whether safer alternatives have been tried first.