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Answer the following medical question with the correct letter choice: | <<Question:>> A research group designed a study to investigate the epidemiology of syphilis in the United States. After a review of medical records, the investigators identified patients who were active cocaine users, but did not have a history of syphilis. They subsequently examined the patient's medical charts to det... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 16-year-old college student presents to the emergency department with a 3-day history of fever, muscle rigidity, and confusion. He was started on a new medication for schizophrenia 2 months ago. There is no history of sore throat, burning micturition, or loose motions. At the hospital, his temperature i... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 3-month-old infant who lives in an old house is brought to the emergency department because of lethargy and skin discoloration that started after he was fed some locally prepared baby food being sold in a farmer's market. On presentation, he appears to be irritable and responds slowly to stimuli. Physic... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 27-year-old man comes to the physician because of pain and swelling in his right knee that began 3 days ago when he fell during football practice. He fell on his flexed right knee as he dove to complete a pass. He felt some mild knee pain but continued to practice. Over the next 2 days, the pain worsene... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 31-year-old G1P0000 presents to her obstetrician for her first prenatal visit after having a positive home pregnancy test one week ago. She states that her last menstrual period was 8 weeks ago. The patient has a past medical history of type I diabetes mellitus since childhood and is on insulin. Her hem... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 59-year-old woman comes to the physician because of left leg swelling that started after a transcontinental flight. A duplex ultrasound of the left leg shows a noncompressible popliteal vein. A drug is prescribed that inhibits the coagulation cascade. Two weeks later, laboratory studies show: Platelet c... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 28-year-old woman presents with depressed mood lasting for most days of the week for the past month. She also mentions that she has lost her appetite for the past 3 weeks. She adds that her job performance has significantly deteriorated because of these symptoms, and she feels like she will have to quit... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A randomized controlled trial is conducted investigating the effects of different diagnostic imaging modalities on breast cancer mortality. 8,000 women are randomized to receive either conventional mammography or conventional mammography with breast MRI. The primary outcome is survival from the time of br... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 40-year-old female visits the emergency department with right upper quadrant pain and fever of 2-hours duration. She denies alcohol, cigarette, and drug use and reports no other medical problems. Body mass index is 30 kg/m^2. Her temperature is 38.5 degrees Celsius (101.3 degrees Fahrenheit), blood pres... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 52-year-old woman is brought to the emergency department by fire and rescue after being involved in a motor vehicle accident. The paramedics report that the patient’s car slipped off the road during a rainstorm and rolled into a ditch. The patient was restrained and the airbags deployed during the crash... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old healthy male presents to the emergency room complaining of severe abdominal pain. He reports that he was playing rugby for his college team when he was tackled on his left side by a member of the opposing team. He is currently experiencing severe left upper abdominal pain and left shoulder p... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 28-year-old man is brought to the emergency department after he was found half dressed and incoherent in the middle of the road. In the emergency department he states that he has not slept for 36 hours and that he has incredible ideas that will make him a billionaire within a few months. He also states ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> Thirty minutes after normal vaginal delivery of twins, a 35-year-old woman, gravida 5, para 4, has heavy vaginal bleeding with clots. Physical examination shows a soft, enlarged, and boggy uterus. Despite bimanual uterine massage, administration of uterotonic drugs, and placement of an intrauterine balloo... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A scientist is working on creating synthetic hemoglobin that can be used to replace blood loss in humans. She therefore starts to study the behavior of this artificial hemoglobin in terms of its ability to bind oxygen. She begins by measuring the affinity between this synthetic hemoglobin and oxygen in a ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 32-year-old female comes to the physician because of recurrent episodes of abdominal pain, bloating, and loose stools lasting several days to a couple weeks. She has had these episodes since she was 24 years old but they have worsened over the last 6 weeks. The site of the abdominal pain and the intensi... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 59-year-old man comes to the physician because of a 1-year history of increased urinary frequency, weak urinary stream, and occasional straining to void urine. Rectal examination shows a large, nontender prostate without asymmetry or nodularity. His serum creatinine, prostate-specific antigen, and urina... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 25-year-old woman presents to the emergency department with fatigue and weakness. She states over the past 24 hours she has not felt like herself and has felt like she has no strength. The patient has no significant past medical history other than a single episode of blood-tinged diarrhea 1 week ago whi... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 47-year-old woman presents to the clinic complaining of bilateral eye pain for the past 2 days. The pain is described initially as “sand in the eye” but is now a sharp, stabbing pain. She denies any trauma, irritation, or new facial care products but endorses some joint pain in her fingers. Her past med... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 72-year-old man comes to the emergency department because of blurry vision for the past 3 days. He has also had 4 episodes of right-sided headaches over the past month. He has no significant past medical history. His father died of coronary artery disease at the age of 62 years. His temperature is 37.2°... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-month-old girl presents to an outpatient office for a routine physical. She can sit momentarily propped on her hands, babbles with consonants, and transfers objects hand to hand. The pediatrician assures the parents that their daughter has reached appropriate developmental milestones. Which additional... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> An 11-year-old boy who recently emigrated from Ukraine is brought to the physician for the evaluation of failure to thrive. Genetic analysis shows the deletion of the 508th codon in a gene on chromosome 7. The deletion results in defective post-translational folding of a protein and retention of the misfo... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A newborn is evaluated by the on-call pediatrician. She was born at 33 weeks gestation via spontaneous vaginal delivery to a 34-year-old G1P1. The pregnancy was complicated by poorly controlled diabetes mellitus type 2. Her birth weight was 3,700 g and the appearance, pulse, grimace, activity, and respira... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 68-year-old man comes to the emergency department because of a 1-week history of difficulty breathing. He has had recurrent palpitations over the past 2 years. During this time, he has also had several episodes of anxiety despite no change in his daily life. He has occasional sharp chest pain localized ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 50-year-old male with HIV presents to his primary care provider complaining of persistent fevers and night sweats over the past four months. He has also experienced a productive cough. He has been poorly adherent to his HAART regimen. His past medical history also includes gout, hypertension, and diabet... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 68-year-old man comes to the physician for a follow-up examination, accompanied by his daughter. Two years ago, he was diagnosed with localized prostate cancer, for which he underwent radiation therapy. He moved to the area 1 month ago to be closer to his daughter but continues to live independently. He... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 34-year-old G3P2103 with a past medical history of preeclampsia in her last pregnancy, HIV (CD4: 441/mm^3), and diabetes mellitus presents to her obstetrician for her first postpartum visit. She delivered her third child via C-section one week ago and reports that she is healing well from the surgery. S... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 22-year-old man presents to the physician due to a progressively worsening weakness and an increasingly large abdomen. He notes that he eats well and is fairly active; however, his abdomen has become increasingly protuberant. He also complains of easy bruisability. His medical history is not significant... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 69-year-old woman is brought to the emergency department because of fatigue and lethargy for 5 days. She has also had weakness and nausea for the last 3 days. She has sarcoidosis, major depressive disorder, and hypertension. She had a stroke 5 years ago. Current medications include aspirin, nifedipine, ... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 54-year-old woman comes to the physician with abdominal distention and mild diffuse abdominal discomfort. She has not had nausea, vomiting, fever, or chills. She was diagnosed with alcoholic liver cirrhosis 2 years ago. Examination shows a protruding, distended abdomen that is dull to percussion with a ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 33-year-old woman is brought to the emergency department 30 minutes after being rescued from a fire in her apartment. She reports nausea, headache, and dizziness. Physical examination shows black discoloration of her oral mucosa. Pulse oximetry shows an oxygen saturation of 99% on room air. The substanc... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 35-year-old woman presents with increased anxiety and a reeling sensation. Her complaint started 30 minutes ago with increased sweating and palpitations and is gradually worsening. On examination, the blood pressure was found to be 194/114 mm Hg. She had normal blood pressure at the local pharmacy 5 day... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> An 83-year-old man with advanced-stage prostate cancer comes to the physician because of a 1-week history of worsening lower back and hip pain. The patient's analgesic regimen includes oxycodone, ibuprofen, and alendronic acid. Physical examination shows localized tenderness over the lumbar spine and righ... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 1-month-old male newborn is brought to the physician because of poor feeding, a hoarse cry, and lethargy for 1 week. The boy was born in Mozambique, from where he and his parents emigrated 2 weeks ago. He is at the 95th percentile for head circumference, 50th percentile for length, and 70th percentile f... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 31-year-old obese Caucasian female presents to the Emergency Department late in the evening for left lower quadrant pain that has progressively worsened over the last several hours. She describes the pain as sharp and shooting, coming and going. Her last bowel movement was this morning. She has also had... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 66-year-old man is admitted to the medical floor after being diagnosed with community-acquired pneumonia. He has been in good health except for the use of steroids for the past 6 months for ulcerative colitis. The patient is started on the empiric therapy with ceftriaxone for the management of pneumonia... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 16-year-old male presents to the emergency department with a hematoma after falling during gym class. He claims that he has a history of prolonged nosebleeds and bruising/bleeding after minor injuries. Physical exam is unrevealing other than the hematoma. Labs are obtained showing an increased bleeding ... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 40-year-old man presents to the physician for a scheduled checkup. He was diagnosed with type 2 diabetes mellitus 5 years ago and has been taking his prescribed metformin daily, as prescribed. He also started exercising and has improved his diet. He has no particular complaints at the time. The patient ... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 25-year-old woman, gravida 2, para 1, is brought to the emergency department at 39 weeks' gestation in active labor. Her first child was delivered at 40 weeks' gestation by elective cesarean section due to limited range of motion in her hip. The patient has sickle cell disease. She has had multiple epis... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator is studying the replication of bacterial DNA with modified nucleotides. After unwinding, the double-stranded DNA strand forms a Y-shaped replication fork that separates into two strands. At each of these strands, daughter strands are synthesized. One strand is continuously extended from th... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A clinical trial is being run with patients that have a genetic condition characterized by abnormal hemoglobin that can undergo polymerization when exposed to hypoxia, acidosis, or dehydration. This process of polymerization is responsible for the distortion of the red blood cell (RBC) that acquires a cre... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator isolates bacteria from a patient who presented with dysuria and urinary frequency. These bacteria grow rapidly in pink colonies on MacConkey agar. During replication of these bacteria, the DNA strands are unwound at the origin of replication, forming two Y-shaped replication forks that ope... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 35-year-old banker is brought to a medical clinic by his concerned wife. For the past 3 weeks, he has not been eating well and has had a 10 kg (22 lb) weight loss. He wakes up very early in the mornings and feels extremely despondent. He no longer goes out on the weekends to hang out with his close frie... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 36-year-old man presents to his primary care physician with increasing fatigue. He says that the fatigue started after he returned from vacation in South America 4 weeks ago and thinks that it may be related to an infection he got while abroad. He does not know the name of the infection but says that he... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A randomized control double-blind study is conducted on the efficacy of 2 sulfonylureas. The study concluded that medication 1 was more efficacious in lowering fasting blood glucose than medication 2 (p ≤ 0.05; 95% CI: 14 [10-21]). Which of the following is true regarding a 95% confidence interval (CI)? -... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A group of scientists is studying the mechanism of action of various pancreatic hormones in rats. The scientists studied hormone A, which is secreted by the β-cells of the pancreas, and found that hormone A binds to a complex dimeric receptor on the cell membrane and exerts its effects via dephosphorylati... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 15-year-old boy presents with a sore throat and difficulty swallowing. The patient says he has had a sore throat over the last 3 weeks. Two days ago it became acutely more painful. There is no significant past medical history nor current medications. The vital signs include: temperature 38.2°C (100.8°F)... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 43-year-old man from Chile comes to the physician because of a 1-day history of upper back pain and difficulty swallowing. He has had pain in his shoulder and knee joints over the past 10 years. He is 190 cm (6 ft 3 in) tall and weighs 70.3 kg (155 lb); BMI is 19.4 kg/m2. His blood pressure is 142/86 mm... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A previously healthy 41-year-old woman comes to the physician for the evaluation of recurrent episodes of palpitations and sweating over the past month. Her symptoms typically start after swimming practice and improve after drinking ice tea and eating some candy. She has also had a 5-kg (11-lb) weight gai... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> An 8-year-old girl is brought to the clinic by her parents for fever and easy bruising. Her parents report that the child has been bruising easily ever since an upper respiratory infection 3 months ago. For example, a bump into the table resulted in a large bruise on the side of her hip for a week. Three ... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 52-year-old woman presents to the urgent care center with several hours of worsening abdominal discomfort with radiation to the back. The patient also complains of malaise, chills, nausea, and vomiting. Social history is notable for alcoholism. On physical exam, she is febrile to 39.5°C (103.1°F), and s... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A previously healthy 38-year-old woman is brought to the emergency department by her husband because of left-sided weakness. As she was getting dressed this morning, she was suddenly unable to button up her shirt. When she showed her husband, he noticed that she seemed confused. She has a 3-year history o... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 62-year-old man is referred to neurology by his primary care physician. He is accompanied by his wife. The patient reports having a resting tremor in his left hand for over a year and some “stiffness” in his left arm. His wife notes that he has started to walk "funny" as well. He has a history of hypert... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 34-year-old woman comes to the physician because of a 3-month history of fatigue and a 4.5-kg (10-lb) weight loss despite eating more than usual. Her pulse is 115/min and blood pressure is 140/60 mm Hg. Physical examination shows warm, moist skin, and a diffuse, non-tender swelling over the anterior nec... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 72-year-old man presents to his primary care physician for a general checkup. The patient works as a farmer and has no concerns about his health. He has a past medical history of hypertension and obesity. His current medications include lisinopril and metoprolol. His temperature is 99.5°F (37.5°C), bloo... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> During a study on the immune system, an investigator isolates and labels T cells from the cortex of the thymus. The T cells that do not bind cortical epithelial cells expressing MHC molecules undergo apoptosis within 3–4 days. Which of the following best describes the T cells during this phase of differen... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> Seven days after undergoing bilateral total knee arthroplasty, a 65-year-old man comes to the physician with a dark discoloration and blisters on his abdomen. Current medications include simvastatin, aspirin, and low molecular weight heparin. His vital signs are within normal limits. Examination of the sk... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 54-year-old woman presents to the physician with discomfort in her upper left abdomen over the past month. Moreover, she has recently been feeling a bit tired. She has no history of any significant illness and takes no medications. Her vital signs are within normal limits. On percussion, the spleen size... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 31-year-old woman comes to the emergency department because of a 4-day history of fever and diarrhea. She has abdominal cramps and frequent bowel movements of small quantities of stool with blood and mucus. She has had multiple similar episodes over the past 8 months. Her temperature is 38.1°C (100.6°F)... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 42-year-old female presents to her primary care provider for an annual checkup. She reports feeling sad over the past few months for no apparent reason. She has lost interest in swimming, which she previously found enjoyable. Additionally, she has had trouble getting a full night’s sleep and has had tro... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 45-year-old obese man is evaluated in a locked psychiatric facility. He was admitted to the unit after he was caught running through traffic naked while tearing out his hair. His urine toxicology screening was negative for illicit substances and after careful evaluation and additional history, provided ... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 55-year-old woman presents to the physician with repeated episodes of dizziness for the last 3 months, which are triggered by rising from a supine position and by lying down. The episodes are sudden and usually last for less than 30 seconds. During the episode, she feels as if she is suddenly thrown int... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 52-year-old man presents to a medical clinic to establish care. He has no known chronic illnesses but has not seen a physician in over 20 years. He generally feels well but occasionally has shortness of breath when he jogs and exercises. He smokes 2-5 cigarettes per day and uses IV heroin “now and then.... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 55-year-old woman comes to the physician because of a 6-month history of worsening shortness of breath on exertion and fatigue. She has type 1 diabetes mellitus, hypertension, hypercholesterolemia, and chronic kidney disease. Her mother was diagnosed with colon cancer at the age of 65 years. Her blood p... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 1-month-old boy is brought by his parents to an orthopaedic surgeon for evaluation of bilateral club feet. He was born at term to a G1P1 mother but had respiratory distress at birth. Furthermore, he was found to have clubfeet as well as other extremity contractures. Physical exam reveals limited range o... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 64-year-old man with osteoarthritis of the knee comes to the physician for evaluation of weakness in his foot. Physical examination shows a swelling in the popliteal fossa. There is marked weakness when attempting to invert his right foot. He is unable to curl his toes. Further evaluation of this patien... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old woman with a past medical history significant only for endometriosis presents to the outpatient clinic with a 2-cm left breast mass that she first identified 6 months earlier. On review of systems, the patient states that the mass is not painful and, by her estimation, has not significantly ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 34-year-old man is being evaluated in an emergency clinic for dizziness and headache after a stressful event at work. He also reports that his face often becomes swollen and he occasionally has difficulty breathing during these spells. Family history is significant for his father who died of a stroke an... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 74-year-old man presents with complaints of sudden severe crushing retrosternal pain. The pain radiated to his left arm shortly after it began, and he was subsequently rushed to the emergency department for evaluation. His troponins and creatine kinase-MB (CK-MB) were elevated. Unfortunately, the patien... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A survey was conducted in a US midwestern town in an effort to assess maternal mortality over the past year. The data from the survey are given in the table below: Women of childbearing age 250,000 Maternal deaths 2,500 Number of live births 100, 000 Number of deaths of women of childbearing age 7,500 Mat... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> Drug A is an experimental compound being investigated for potential use as a protectant against venous thrombosis. Binding assays reveal that the drug’s primary mechanism of action is to block carboxylation of glutamic acid residues in certain serum proteins. Drug A is most similar to which of the followi... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> An 11-year-old boy presents to his pediatrician for a wellness checkup. The child is an immigrant, and this is his first visit. The patient is in the 99th percentile for height and 50th percentile for weight. The child is struggling in school, and basic cognitive testing suggests he is moderately mentally... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> Twenty minutes after delivery of a newborn infant, a 22-year-old woman starts breastfeeding. Initially, the expressed milk is thick and yellowish. Three days later, the mother's breasts swell and the expressed milk becomes thinner and whiter. A decrease in maternal serum concentration of which of the foll... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> Ten days after undergoing emergent colectomy for a ruptured bowel that she sustained in a motor vehicle accident, a 59-year-old woman has abdominal pain. During the procedure, she was transfused 3 units of packed red blood cells. She is currently receiving total parenteral nutrition. Her temperature is 38... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A group of investigators seeks to compare the non-inferiority of a new angiotensin receptor blocker, salisartan, with losartan for reduction of blood pressure. 2,000 patients newly diagnosed with hypertension are recruited for the trial; the first 1,000 recruited patients are administered losartan, and th... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 48-year-old man is brought to the emergency department by his neighbor, who found him lying unconscious at the door of his house. The patient lives alone and no further history is available. On physical examination, his temperature is 37.2ºC (98.9ºF), pulse rate is 114/min, blood pressure is 116/78 mm H... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-year-old boy is brought to the physician because of a 2-week history of frequent episodes of unresponsiveness. During these episodes, he stares blankly, rhythmically nods his head, and does not respond to verbal stimulation for several seconds. Hyperventilation for 30 seconds precipitates an episode o... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 60-year-old man comes to the physician for a routine health maintenance examination. Over the past year, he has had problems initiating urination and the sensation of incomplete bladder emptying. He has a history of hypertension and hypercholesterolemia. He has smoked one pack of cigarettes daily for th... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 57-year-old man is brought to the emergency department by the police after he was found running around a local park naked and screaming late at night. During intake, the patient talks non-stop about the government spying on him and his family, but provides little useful information besides his name and ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 36-year-old woman presents with thyroid swelling. She has been healthy until now and follows all the healthcare precautions except for missing a flu shot this year. On physical examination, the thyroid gland is diffusely enlarged and tender to palpation. Laboratory findings show a decreased serum TSH le... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 27-year-old woman, who recently immigrated from Bangladesh, presents to her primary care physician to discuss birth control. During a review of her past medical history, she reports that as a child she had a recurrent sore throat and fever followed by swollen and aching hip and knee joints. These sympto... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 52-year-old man presents to his primary care provider for a routine examination. He feels tired and has aches most days and is concerned that he has gained a little weight since his last appointment. Past medical history is significant for hypertension and hyperlipidemia, for which he takes hydrochlorot... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 27-year-old man is brought to the emergency department by his friends in a confused state. He was doing fine 5 days ago when he started to complain of fever and flu-like symptoms. His fever was low-grade and associated with a headache. For the past 2 days, he has become increasingly irritable, confused,... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A scientist is studying the influenza A virus. He focuses on two strains – one from humans (H7N1) and one from horses (H3N8). He takes cells from chickens and coinfects these cells with both influenza strains. From these chicken cells, the scientist isolates a new strain and finds that this new strain can... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 15-year-old girl is brought to the physician by her mother for an annual well-child examination. Her mother complains that the patient has a poor diet and spends most of the evening at home texting her friends instead of doing homework. She has been caught smoking cigarettes in the school bathroom sever... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 25-year-old female presents to the emergency room with a heart rate of 32 BPM and a blood pressure of 80/40. She was found by emergency medical services with an empty bottle of propanolol that was taken from her grandmother. Her vital signs do not improve despite IV fluids and oxygen. Which of the follo... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> An otherwise healthy 31-year-old man presents to the emergency department with a several-day history of sharp, central chest pain, which is constant and unrelated to exertion. The pain gets worse on lying down and decreases with sitting forward. He has smoked 10–15 cigarettes daily for the past 7 years. H... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old man comes to the physician with a 2-day history of fever, crampy abdominal pain, and blood-tinged diarrhea. He recently returned from a trip to Mexico. His temperature is 38.2°C (100.8°F). Abdominal examination shows diffuse tenderness to palpation; bowel sounds are hyperactive. Stool cultur... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator is studying the activity level of several different enzymes in human subjects from various demographic groups. An elevated level of activity of phosphoribosyl pyrophosphate synthetase is found in one of the study subjects. This patient is most likely to have which of the following conditio... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> An 18-year-old boy presents to the clinic with shortness of breath and fever for the last 2 days. He also has a cough for the same duration. He is asthmatic and uses inhaled albuterol for symptom relief when required. He used albuterol today 3 times at 10-minute intervals but has not had relief of his sym... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 9-year-old boy with a history of acute lymphoblastic leukemia is brought to the clinic by his mother because of pruritic vesicles that appeared on the left side of his torso 12 hours ago. One day earlier, before the appearance of the vesicles, the patient’s mother notes that he had been complaining of a... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 56-year-old man comes to the emergency department because of a 3-day history of severe epigastric pain that is radiating to his back and accompanied by nausea and vomiting. He has a history of alcohol use disorder. His blood pressure is 90/60 mm Hg and his pulse is 110/min. Physical examination shows di... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 31-year-old woman presents with pruritic vesicles on the right side of her torso. She notes that the lesions appeared 2 days ago and have not improved. One day prior to their appearance, she says that she experienced a burning sensation in the affected area. The patient is afebrile and vital signs are w... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 73-year-old man comes to the physician because of worsening bilateral lower extremity pain for the past 8 months. The pain begins after walking one to two blocks and radiates bilaterally down the buttocks with cramping and tingling. He reports that the pain is worse while walking downhill and is relieve... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 23-year-old woman approaches her university health services after a 5-day history of having a mucoid secretion that she has seen on her underwear upon waking up in the morning. She denies dysuria. She comments that 2 weeks ago, she engaged in unprotected sexual intercourse with both a male and a female ... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 67-year-old man presents to the emergency department following an episode of chest pain and a loss of consciousness. The patient is in critical condition and his vital signs are rapidly deteriorating. It is known that the patient is currently undergoing chemotherapy for Hodgkin’s lymphoma. The patient i... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> An 18-year-old man is brought to the emergency department by his girlfriend because of a pruritic rash on his penis that has been present for the past hour. The rash developed shortly after the patient had protected sexual intercourse with his girlfriend for the first time. His girlfriend does not have an... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 14-year-old girl is brought by her parents to the physician because of recurrent episodes of shortness of breath and nonproductive cough over the past 3 months. She has had two episodes per week, which have resolved spontaneously with rest. Once a month, she wakes up at night with shortness of breath. S... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 19-year-old African American male with a history of bipolar I disorder presents to the psychiatrist for a follow-up visit. During the session, the patient explains that for the past 2 months he has felt significantly fatigued and constipated. He is always complaining of feeling cold and has gained sever... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 47-year-old man comes to the physician for gradual onset of fatigue for the last 4 months. He also reports shortness of breath and difficulty concentrating. His friends have told him that he appears pale. He has smoked one pack of cigarettes daily for the last 20 years. He does not drink alcohol. His vi... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 45-year-old man presents to the emergency department with difficulties swallowing food. He states that he experiences pain when he attempts to swallow his medications or when he drinks water. He reveals that he was diagnosed with HIV infection five years ago. He asserts that he has been taking his antir... | B |
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