Case-based MCQ

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A study of Aspirin for secondary prevention in coronary artery disease was recently completed. The treatment group had 400 patients, of whom 40 had a myocardial infarction. The control group had 400 patients, of whom 80 had a myocardial infarction. What is the number needed to treat for Aspirin to prevent one myocardial infarction? A. 25 B. 125 C. 1,000 D. 800 E. 10

🧠 Case-based MCQ 🔸 #MCQ_62 🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤 The correct answer is E. Varenicline is a partial nicotinic acetylcholine agonist and the most effective single intervention for smoking cessation. Varenicline reduces the symptoms of nicotine withdrawal by blocking nicotine from binding to the receptor that mediates the reinforcing effects of nicotine that lead to nicotine dependence. Through this action, varenicline reduces the rewarding aspects of cigarette smoking. It does this by binding with high affinity and producing partial stimulation of the alpha-4 beta-2 nicotinic receptor. Although varenicline has been associated with a possible increase in cardiac events (e.g., myocardial ischemia, arrhythmia), the risks are minimal. Any risk is likely outweighed by the benefits of smoking cessation. Despite initial concerns about possible serious adverse neuropsychiatric effects from varenicline, the black box warning for these adverse effects was removed in 2016. Based on newer findings, varenicline does not appear to increase the risk of suicidality or depression compared with placebo. There also appear to be no differences between the rates of serious psychiatric symptoms in patients taking bupropion, nicotine replacement therapy, or varenicline (the 3 U. S. Food and Drug Administration [FAD]-approved treatments for smoking cessation). However, the FDA still recommends a cautious approach and monitoring patients for new or unusual behaviors (e.g., hostility, agitation, depressed mood, suicidal ideation). Varenicline should be discontinued if any new neuropsychiatric symptoms emerge soon after it is started. ❌Choice B and C are not correct: Cytochrome P450 3A4 (CYP3A4) system inhibitors increase bleeding risk in patients taking prasugrel and also increase myopathy risk in those taking statins. However, varenicline is not associated with CYP3A4 inhibition. Myopathy is common with statins, but routine monitoring is not required. ❌Choice D is not correct: Statins may cause increases in hepatic transaminases after initiation or dose change, but severe hepatotoxicity is rare. Routine monitoring is not needed. In addition, varenicline is not associated with significant liver function test abnormalities. ❌Choice E is not correct: Weight gain is common after smoking cessation, but early monitoring is not required. ✅Summarized Points: Varenicline is an effective treatment for smoking cessation. Despite initial concerns about adverse neuropsychiatric symptoms, it does not appear to increase the risk of suicide or depression in patients with past psychiatric symptoms. However, varenicline should be discontinued if any new neuropsychiatric symptoms emerge soon after it is started.

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🧠 Case-based MCQ 🔸 #MCQ_61 🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤 A 45-year-old man returns to the office after experiencing an acute ST-elevation myocardial infarction 4 weeks ago. The patient underwent urgent right coronary artery revascularization with the placement of a drug-eluting stent. He is motivated to quit smoking but thinks that he needs help. The patient's discharge medications include atorvastatin, metoprolol, aspirin, and prasugrel. Physical examination is unremarkable. During the current visit, he is prescribed varenicline. Appropriate behavioral support is also provided.  Which of the following should be assessed at this patient's follow-up visit in a week? A. Weight gain B. Muscle aches C. Bleeding issues D. Liver function tests E. Unusual behaviors

🧠 Case-based MCQ 🔸 #MCQ_61 🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤 The correct answer is E. Maternal vaccination is beneficial to both mother and fetus, and the optimal time for administration is prior to conception. Vaccinations during pregnancy are indicated if the vaccine has minimal risk if a significant risk exists for infection exposure and if increased morbidity and mortality are associated with infection. Vaccines that are safe during pregnancy include immunoglobulins (e.g., Rho(D) immunoglobulin), toxoids (e.g., tetanus toxoid), and inactivated vaccines (e.g., tetanus toxoid-reduced diphtheria toxoid-acellular pertussis [Tdap], injectable influenza virus). Live-attenuated vaccines (e.g., intranasal influenza, measles-mumps-rubella [MMR], varicella) are contraindicated during pregnancy due to the theoretical risk of congenital infection. Pertussis (whooping cough) in infants is associated with high rates of disease complications (e.g., seizure, renal failure, pneumonia) and mortality. Because infant pertussis infection is so severe, Tdap vaccination is recommended for women during each pregnancy regardless of vaccination history. The Tdap vaccine is safe during every trimester. Vaccination during the third trimester is preferred, as it facilitates both the maternal antibody response and the transfer of maternal antibodies through the placenta, providing passive immunity to the fetus. ❌Choice A,B and D are not correct: Due to the theoretical risk of congenital infection, live-attenuated vaccines (e.g., intranasal influenza, measles-mumps-rubella [MMR], varicella) are contraindicated during pregnancy. ❌Choice C is not correct: The pneumococcal vaccine is safe in pregnancy; however, it is recommended for patients who have risk factors for invasive pneumococcal infection (e.g., chronic lung disease, immune deficiency). ✅Summarized Points: Tetanus toxoid-reduced diphtheria toxoid-acellular pertussis vaccination is recommended for women during each pregnancy regardless of vaccination history. Vaccination during the third trimester protects the mother against pertussis and provides passive immunity to the infant

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🫀Cardiology Cases | #case29 A 75-year-old female had a syncopal episode at the airport. She had no memory of the event. There was no report of chest pain. On arrival in the emergency department, she was asymptomatic; her examination was normal except for a forehead laceration.

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🧠 Case-based MCQ 🔸 #MCQ_61 🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤🔤 A 26-year-old primigravid woman comes to the office during the fall to establish prenatal care after a positive home pregnancy test. Her last menstrual period was 7 weeks ago. The patient is healthy and takes no medications. Ultrasound shows a viable intrauterine gestation. Prenatal laboratory results reveal susceptibility to rubella and varicella. She is up to date on vaccinations. Which of the following vaccines is recommended during this patient's pregnancy? A. Intranasal influenza B. Measles-mumps-rubella C. Pneumococcal D. Varicella E. Tetanus-reduced diphtheria-acellular pertussis

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