Tüm alıştırma soruları

An ambulatory appointment is scheduled for a 41-year-old male delivery driver to evaluate his blood pressure management. He was diagnosed with primary hypertension six months ago and was prescribed daily amlodipine. He also has a history of moderate persistent asthma, which is well controlled on a daily inhaled corticosteroid-formoterol inhaler.

During today's visit, his blood pressure is 158/98 mmHg and his heart rate is 76/min. When asked about his medication usage, the patient states, "I only take the blood pressure pill when my neck gets stiff or I feel a headache coming on. Otherwise, I feel completely normal, so I try to avoid putting unnecessary chemicals into my body."

Which of the following is the most appropriate initial response by the physician?

A randomized, double-blind, placebo-controlled trial is conducted to evaluate the efficacy of a novel glucagon-like peptide-1 (GLP-1) receptor agonist for the secondary prevention of major adverse cardiovascular events (MACE). The study enrolls patients with type 2 diabetes mellitus and established cardiovascular disease. Participants are randomized in a 1:1 ratio to receive either the GLP-1 receptor agonist or a placebo, in addition to standard of care.

Over a 3-year follow-up period, the investigators report the following outcomes:

Based on the study results, what is the number needed to treat (NNT) with the novel GLP-1 receptor agonist to prevent one major adverse cardiovascular event over the 3-year follow-up period?

A 75-year-old woman is evaluated in the emergency department for sudden-onset right-sided pleuritic chest pain and mild shortness of breath that began 6 hours ago. She has a history of essential hypertension and osteoarthritis. Current medications include lisinopril and acetaminophen. Vital signs are temperature 37.1°C (98.8°F), blood pressure 138/86 mm Hg, pulse 104/min, and respirations 18/min. Oxygen saturation is 96% on room air. Physical examination is unremarkable except for mild, chronic right lower extremity edema. The patient is alert, comfortable, and conversing in full sentences. Laboratory evaluation shows a serum creatinine of 1.0 mg/dL. High-sensitivity troponin I is undetectable, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) is 85 pg/mL (normal: <125 pg/mL). CT pulmonary angiography reveals a segmental pulmonary embolism in the right lower lobe. Transthoracic echocardiography demonstrates normal right ventricular size and systolic function without evidence of right heart strain. The patient is administered a dose of oral apixaban. Her pain is completely relieved with oral analgesics. She lives with her healthy, supportive daughter 15 minutes away from the hospital and is ambulatory at baseline. Which of the following is the most appropriate disposition for this patient?

A pulmonology research consortium is planning a clinical trial to evaluate a novel inhaled bronchodilator for the symptomatic management of moderate, stable chronic obstructive pulmonary disease (COPD). To maximize statistical efficiency due to funding constraints and a limited patient pool, the investigators choose a design where each enrolled participant is randomized to receive either the novel bronchodilator or a matching placebo for four weeks. Subsequently, following a two-week intervention-free interval, participants who initially received the active drug will receive the placebo, and those who received the placebo will receive the active drug for another four weeks. The primary outcome is the mean change in daily breathlessness scores.

Which of the following conditions is an essential requirement for this specific study design to yield valid results?

During a routine outpatient visit, a physician sees a 62-year-old female with a known history of severe chronic obstructive pulmonary disease (COPD) and a 40-pack-year smoking history. Upon entering the examination room, the physician notes a strong odor of tobacco smoke on the patient's clothing. When the physician gently asks about her current tobacco use, the patient crosses her arms, raises her voice, and states, "My grandfather smoked a pack a day until he died peacefully at 90! Besides, you already told me my lungs are permanently damaged, so putting myself through the misery of quitting now won't fix anything." Which of the following is the most appropriate initial response by the physician?

A 64-year-old man with end-stage liver disease due to alcohol use disorder is brought to the emergency department by his daughter after vomiting large amounts of blood at home. On presentation, his blood pressure is 80/50 mm Hg, and his heart rate is 125/min. Physical examination reveals jaundice, marked ascites, and asterixis. He is lethargic and oriented only to his name. An advance directive in his electronic medical record explicitly names his daughter as his healthcare surrogate and states he does not want mechanical ventilation under any circumstances. The medical team determines he requires immediate endotracheal intubation for airway protection prior to urgent upper endoscopy. The physician explains the situation to the daughter, who refuses consent for intubation, stating, "He made it very clear he never wanted to be on a breathing machine, even if it meant he would die." When the physician briefly rouses the patient and asks what he wants, he mumbles, "Help me, don't let me die," before falling back asleep. Which of the following is the most appropriate next step in the management of this patient?

A 54-year-old man presents to the clinic for a follow-up evaluation. One month ago, his blood pressure was 152/96 mm Hg, and today it is 154/98 mm Hg. His medical history is significant for osteoarthritis and a recently diagnosed active gastric ulcer. At the previous visit, the physician recommended initiating amlodipine. Today, the patient admits he never filled the prescription. He states, "I read on an internet forum that blood pressure pills destroy your kidneys. I refuse to take them. Instead, I am going to strictly limit my salt intake and start taking high-dose ibuprofen every day for my joint pain so I can start jogging." He insists on proceeding with this alternative plan.

Which of the following statements by the physician represents the most appropriate initial counseling approach?

A cohort study is conducted to evaluate the risk of hepatotoxicity associated with a novel antifungal agent, MycoStop, compared to standard fluconazole therapy in adult patients. The study follows $5,000$ patients prescribed MycoStop and $5,000$ patients prescribed fluconazole over a 12-month period. At the end of the follow-up, $250$ patients in the MycoStop group and $50$ patients in the fluconazole group developed signs of hepatotoxicity.

During the data analysis, researchers perform a stratified analysis to account for concurrent daily use of acetaminophen. The relative risk (RR) of hepatotoxicity with MycoStop compared to fluconazole is found to be $6.2$ in patients taking acetaminophen daily, and $1.5$ in patients who do not take acetaminophen. The crude relative risk for the entire cohort is $5.0$.

Based on these results, what is the Number Needed to Harm (NNH) for MycoStop compared to fluconazole, and how should concurrent acetaminophen use be classified?

A physician is evaluating four different patients in an outpatient clinic. Each patient expresses a specific barrier to adhering to their recommended medical management. Match each patient statement to the most appropriate initial physician counseling strategy.

A clinical research committee is evaluating several proposed study protocols. Match each epidemiological research scenario with the most appropriate study design.

Match each of the following ambulatory patients with the single most appropriate screening recommendation according to current United States Preventive Services Task Force (USPSTF) guidelines.

A 71-year-old man with metastatic pancreatic adenocarcinoma and an irreversible malignant bowel obstruction is receiving acute inpatient care. Following extensive multidisciplinary discussions, the patient and his surrogate decision-maker have decided to prioritize quality of life and wish to pursue comfort measures at home. Arrange the following steps in the correct chronological sequence to appropriately execute this patient's disposition and transition to home hospice care.

Match each clinical presentation of nausea and vomiting in the palliative care setting with the most appropriate targeted initial pharmacologic intervention based on its underlying pathophysiologic mechanism.

Critical care investigators are designing a clinical trial to evaluate two experimental therapeutic strategies for patients admitted with severe sepsis-induced acute respiratory distress syndrome (ARDS). The two interventions being evaluated are a targeted intravenous fluid restriction protocol (compared to standard fluid management) and an early continuous neuromuscular blockade protocol (compared to on-demand paralytics). The primary outcome is 28-day ventilator-free survival. The researchers hypothesize that while each intervention alone may improve outcomes, the combination of both strategies will demonstrate a significant synergistic benefit, yielding a survival rate greater than the sum of their individual effects. Which of the following randomized controlled trial designs is most appropriate for efficiently assessing both the individual effects of these interventions and their potential interaction?

A 35-year-old man comes to the clinic for a routine health maintenance visit. He has a history of bipolar I disorder, which has been well-controlled on lithium monotherapy for the past 5 years. He reports no recent manic or depressive episodes and states that his mood has been highly stable. He denies polyuria, polydipsia, fatigue, or unintentional weight changes. He takes no other medications and has no other known medical conditions. Vital signs are within normal limits, and the physical examination is unremarkable. A recent serum lithium level was $0.8 \text{ mEq/L}$ (therapeutic range: $0.6-1.2 \text{ mEq/L}$). Which of the following laboratory studies are indicated for routine ongoing monitoring of this patient's long-term pharmacotherapy? (Select three)

A multidisciplinary task force at a tertiary care hospital is developing a study protocol to investigate prophylactic interventions for postoperative delirium in patients over 65 years of age undergoing major orthopedic surgery. The research team plans to evaluate two separate interventions: a single dose of intravenous haloperidol administered immediately post-surgery, and a standardized non-pharmacologic care bundle focused on sleep hygiene and early mobilization.

The investigators specifically aim to assess the independent effect of the haloperidol, the independent effect of the care bundle, and whether the simultaneous use of both interventions provides a synergistic benefit that exceeds the additive effects of each alone. Furthermore, they wish to answer all three clinical questions using the most statistically efficient patient sample size possible.

Which of the following research designs is most appropriate for this investigation?

An 85-year-old man is evaluated for discharge planning. He was admitted 8 days ago for urosepsis complicated by a non-ST-segment elevation myocardial infarction (NSTEMI). He spent 4 days in the intensive care unit requiring vasopressor support and was subsequently transferred to the medical ward. He is now hemodynamically stable, afebrile, and his white blood cell count has normalized to 7,500/mm³. He is currently receiving a 14-day course of intravenous ceftriaxone via a peripherally inserted central catheter (PICC) and has 6 days of therapy remaining.

Prior to admission, the patient lived at home with his 82-year-old wife and ambulated independently with a cane. His wife has severe osteoarthritis and uses a wheeled walker for mobility.

Currently, the patient is alert and oriented to person, place, and time. Physical examination reveals generalized muscle weakness. Physical and occupational therapy evaluations indicate that he requires maximal assistance for bed-to-chair transfers and cannot ambulate safely. He fatigues rapidly during therapy sessions, tolerating a maximum of 30 minutes of active physical rehabilitation per day due to cardiopulmonary deconditioning.

Which of the following is the most appropriate disposition for this patient?

A physician evaluates a 62-year-old female patient who presents for a scheduled health maintenance visit. Her past medical history is notable for hypertension, osteoarthritis, and a total abdominal hysterectomy with bilateral salpingo-oophorectomy performed for symptomatic uterine fibroids at age 45. She has consumed half a pack of cigarettes per day continuously since she was 22 years old. She currently takes amlodipine and acetaminophen. She reports feeling well without any new symptoms. Physical examination shows a blood pressure of 126/78 mm Hg and a body mass index of 24 kg/m². A recently calculated 10-year major osteoporotic fracture risk using the FRAX assessment tool is 4.2%.

Review of her preventive care timeline demonstrates:
- A colonoscopy at age 54 with no abnormal findings.
- A screening mammogram completed 6 months ago that was interpreted as normal.
- A negative Hepatitis C virus antibody assay at age 58.
- Documentation of the 20-valent pneumococcal conjugate vaccine (PCV20) administered at age 60, alongside an up-to-date annual influenza vaccination.

Which of the following interventions is the most appropriate next step in this patient's preventive care?

Match each clinical research scenario with the most appropriate epidemiological study design it describes.

A 62-year-old woman is admitted to the hospital with a 2-day history of acute right leg swelling and right-sided pleuritic chest pain. She has a history of type 2 diabetes mellitus, hypertension, and chronic kidney disease stage 4. Her home medications include amlodipine, insulin glargine, and atorvastatin. On presentation, her blood pressure is 138/85 mmHg, pulse is 105/min, and oxygen saturation is 94% on room air. Laboratory studies show a serum creatinine of $3.2 \text{ mg/dL}$ (estimated glomerular filtration rate: $18 \text{ mL/min/1.73 m}^2$). A computed tomography (CT) pulmonary angiogram confirms a right lower lobe segmental pulmonary embolism. A comprehensive lower extremity venous ultrasound demonstrates a proximal deep vein thrombosis in the right popliteal vein. Continuous intravenous unfractionated heparin is initiated.

Which of the following are necessary components of this patient's ongoing treatment and monitoring plan? (Select two)