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Answer the following medical question with the correct letter choice: | <<Question:>> A 20-year-old college student presents to the emergency room complaining of insomnia for the past 48 hours. He explains that although his body feels tired, he is "full of energy and focus" after taking a certain drug an hour ago. He now wants to sleep because he is having hallucinations. His vital signs a... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> You submit a paper to a prestigious journal about the effects of coffee consumption on mesothelioma risk. The first reviewer lauds your clinical and scientific acumen, but expresses concern that your study does not have adequate statistical power. Statistical power refers to which of the following? ---- <... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 35-year-old African American man presents with fever, abdominal pain, and severe weakness since yesterday. On physical examination, the patient is jaundiced and shows a generalized pallor. Past medical history is significant for recently receiving anti-malaria prophylaxis before visiting Nigeria. Labora... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 42-year-old man with hypertension and type 2 diabetes mellitus is admitted to the hospital because of swelling and redness of the left leg for 3 days. He has chills and malaise. He is treated with intravenous clindamycin for 7 days. On the 8th day at the hospital, he has profuse, foul-smelling, and wate... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 14-year-old girl is brought to the physician because of a 10-day history of vaginal bleeding. The flow is heavy with the passage of clots. Since menarche 1 year ago, menses have occurred at irregular 26- to 32-day intervals and last 3 to 6 days. Her last menstrual period was 4 weeks ago. She has no hist... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator is studying the structural integrity of collagen. Human fibroblasts are cultured on a medium and different enzymes are applied. One of the cultures is supplemented with an enzyme that inhibits the formation of hydrogen and disulfide bonds between collagen α-chains. Which of the following p... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 12-year-old African American is exposed to pollen while playing outside. The allergen stimulates TH2 cells of his immune system to secrete a factor that leads to B-cell class switching to IgE. What factor is secreted by the TH2 cell? ---- <<Choices:>> A) IFN-gamma B) IL-4 C) IL-17 D) TGF-beta ---- <<Ans... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 3-year-old boy is brought to the physician because of a 5-day history of yellowing of his eyes and skin. He has had generalized fatigue and mild shortness of breath over the past 2 months. Examination shows pale conjunctivae and scleral jaundice. The spleen is palpated 4 cm below the left costal margin.... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 55-year-old woman comes to the physician because of a 4-day history of chest pain and cough with rust-colored sputum. The chest pain is sharp, stabbing, and exacerbated by coughing. Ten days ago, she had a sore throat and a runny nose. She was diagnosed with multiple sclerosis at the age of 40 years and... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> An 8-year-old boy is brought to the pediatrician by his parents due to recurrent episodes of wheezing for the last 2 years. He uses a salbutamol inhaler for relief from wheezing, but his symptoms have recently worsened. He often coughs during the night, which awakens him from sleep almost every other day.... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 40-year-old male accountant is brought to the physician by his wife. She complains of her husband talking strangely for the past 6 months. She has taken him to multiple physicians during this time, but her husband did not comply with their treatment. She says he keeps things to himself, stays alone, and... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 62-year-old man comes to the physician because of painless swelling in his left foot for 4 months. The swelling was initially accompanied by redness, which has since resolved. He has not had fever or chills. He has a history of coronary artery disease, hyperlipidemia, and type 2 diabetes mellitus. He ha... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A critical care fellow is interested in whether the auscultatory finding of pulmonary rales can accurately predict hypervolemic state. He conducts a study in 100 patients with volume overloaded state confirmed by a Swan Ganz catheter in his hospital's cardiac critical care unit. He also recruits 100 patie... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator is studying the efficacy of preventative measures to reduce pesticide poisonings among Central American farmers. The investigator evaluates the effect of a ban on aldicarb, an especially neurotoxic pesticide of the carbamate class. The ban aims to reduce pesticide poisonings attributable t... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 65-year-old man comes to the physician because of double vision that began this morning. He has hypertension and type 2 diabetes mellitus. He has smoked two packs of cigarettes daily for 40 years. His current medications include lisinopril, metformin, and insulin. Physical examination shows the right ey... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 55-year-old woman returns to her physician for a follow-up on the anemia that was detected last month. She received treatment for a nasopharyngeal infection 2 weeks ago. She was diagnosed with small cell lung cancer 2 years ago and was treated with combination chemotherapy. She was a 30-pack-year smoker... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 41-year-old woman comes to the physician because of a 3-month history of anxiety, difficulty falling asleep, heat intolerance, and a 6-kg (13.2-lb) weight loss. The patient's nephew, who is studying medicine, mentioned that her symptoms might be caused by a condition that is due to somatic activating mu... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 67-year-old man presents to his primary care physician primarily complaining of a tremor. He said that his symptoms began approximately 1 month ago, when his wife noticed his right hand making "abnormal movements" while watching television. His tremor worsens when he is distracted and improves with purp... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> Immediately after undergoing a right total knee replacement, a 69-year-old woman has severe abdominal pain, non-bloody emesis, and confusion. She has a history of Hashimoto thyroiditis that is well-controlled with levothyroxine and hyperlipidemia that is controlled by diet. She underwent bunion removal su... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 16-year-old presents to the primary care physician because he has noticed an increase in the size of his breast tissue over the past 3 years. He states that he is significantly taller than his entire class at school although he feels increasingly weak and uncoordinated. He performs at the bottom of his ... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 30-year-old woman comes to the physician because of increased urinary frequency over the past month. She also reports having dry mouth and feeling thirsty all the time despite drinking several liters of water per day. She has not had any weight changes and her appetite is normal. She has a history of ob... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 43-year-old woman comes to the physician because of tingling and weakness in her left arm for the past 2 days. An image of the brachial plexus is shown. Nerve conduction study shows decreased transmission of electrical impulses in the labeled structure. Physical examination is most likely to show impair... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 13-year-old boy is brought to the emergency department with respiratory distress, fever, and a productive cough. Past medical history is significant for a history of recurrent bronchopneumonia since the age of 5, managed conservatively with antibiotics and mucolytic therapy. The patient’s weight was nor... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-month-old boy is brought to the physician because of a right-sided scrotal swelling for the past 2 months. The swelling is intermittent and appears usually after the patient has been taken outdoors in a baby carrier, and disappears the next morning. The patient was born at term without complications a... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 33-year-old man is brought by ambulance to the emergency room after being a passenger in a motor vehicle accident. An empty bottle of whiskey was found in his front seat, and the patient admits to having been drinking all night. He has multiple lacerations and bruising on his face and scalp and a suppor... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A newborn girl is rushed to the neonatal ICU after an emergency cesarean section due to unstable vital signs after delivery. The pregnancy was complicated due to oligohydramnios and pulmonary hypoplasia. Gestation was at 38 weeks. APGAR scores were 6 and 8 at 1 and 5 minutes respectively. The newborn’s te... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 15-year-old boy presents to the emergency department for evaluation of an ‘infected leg’. The patient states that his right shin is red, swollen, hot, and very painful. The body temperature is 39.5°C (103.2°F). The patient states there is no history of trauma but states he has a history of poorly manage... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 22-year-old woman comes to the physician because of 1 week of progressive left anterior knee pain. The pain is worse after sitting for a prolonged period of time and while ascending stairs. She first noticed the pain the day after a basketball game. She has often taken painful blows to the side of the k... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 69-year-old male with past medical history of hypertension, hyperlipidemia, and diabetes mellitus complicated by end stage renal disease on dialysis presents to his nephrologist for a follow-up appointment. A few weeks ago, the patient saw his nephrologist because he had been feeling tired despite effor... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 33-year-old Caucasian female presents to her primary care provider for pruritus and shortness of breath. Over the past year, she has experienced mild progressive diffuse pruritus. She also reports that her skin seems "hard" and that it has been harder to move her fingers freely. She initially attributed... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator is studying the effects of hyperphosphatemia on calcium homeostasis. A high-dose phosphate infusion is administered intravenously to a healthy subject over the course of 3 hours. Which of the following sets of changes is most likely to occur in response to the infusion? $$$ Serum parathyro... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 35-year-old woman is brought to the emergency department for a severe, left-sided headache and neck pain that started 24 hours after she completed a half-marathon. Shortly after the headache started, she also had weakness of her right upper extremity and sudden loss of vision in her left eye, which both... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 16-year-old girl is brought to the clinic by her mother for amenorrhea. The patient has never had a menstrual cycle and is worried as all her friends “have started to go through puberty.” She has been otherwise healthy with an uncomplicated birth history. “I told her not to worry since I also got my per... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 3-week-old newborn male is brought to the physician because of increasing yellowing of his eyes and skin for 2 weeks. The mother has noticed that his stools have been paler than usual for the past week. He is exclusively formula fed, and feeds every 4 hours with a strong sucking reflux. The patient was ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 33-year-old man comes into the urgent care clinic with an intensely itchy rash on the bilateral mid-lower extremities, with a fine linear demarcation approximately an inch above his socks. The rash is arranged in streaks of erythema with superimposed vesicular lesions. The patient states that he recentl... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 23-year-old man is evaluated as a potential kidney donor for his father. His medical history is significant only for mild recurrent infections as a child. He subsequently undergoes a donor nephrectomy that is complicated by unexpected blood loss. During resuscitation, he is transfused with 4 units of O ... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 19-year-old man presents to the emergency department after 2 separate episodes of loss of consciousness. The first episode occurred 1 year ago while he was running in gym class. Witnesses reported clenching and shaking of both hands after he had fallen. On getting up quickly, he felt lightheaded, nausea... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old gravida 1 is admitted to the hospital after a tonic-clonic seizure at 37 weeks gestation. At the time of presentation, she complains of a severe headache, double vision, and nausea. Her vital signs are as follows: blood pressure, 165/90 mm Hg; heart rate, 91/min; respiratory rate, 9/min; and... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 28-year-old woman is brought to the emergency department after being found in a confused state on an interstate rest area in Florida. She is unable to recall her name, address, or any other information regarding her person. She denies being the woman on a Connecticut driver's license found in her wallet... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 37-year-old woman, gravida 3, para 2, at 28 weeks' gestation comes to the physician for a follow-up examination. One week ago, an oral glucose tolerance screening test showed elevated serum glucose levels. She has complied with the recommended diet and lifestyle modifications. Over the past week, home b... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 62-year-old woman comes to the physician for decreased vision and worsening headaches since this morning. She has hypertension and hypercholesterolemia. Pulse is 119/min and irregular. Current medications include ramipril and atorvastatin. Ocular and funduscopic examination shows no abnormalities. The f... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> Several years after a teenage boy and his younger brother witnessed a gang related murder, they both decided to come forward and report it to authorities. The older brother describes the horrific decapitation of the gang member without displaying any emotion; but when the younger brother was asked about t... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 27-year-old man from Southern California presents with progressive chest pain, non-productive cough, and shortness of breath for the past 24 hours. He denies any similar symptoms in the past. He denies any family history of cardiac disease, recent travel, or exposure to sick contacts. His temperature is... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 4-year-old boy presents with a recent history of frequent falls. The images below depict his movements when he tries to get up from the floor. Which of the following is the most likely diagnosis in this patient? ---- <<Choices:>> A) Duchenne muscular dystrophy B) Lambert-Eaton syndrome C) Guillain-Barré... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 15-year-old adolescent is brought to the physician by her parents. She is concerned that she has not started menstruating yet. She is also self-conscious because her chest has not yet developed and all of her friends are taller and much more developed. Past medical history is noncontributory. Her mother... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 33-year-old female presents with recent onset of painful urination, fever, and right flank pain. Urinary sediment analysis is positive for the presence of white blood cell casts and Gram-negative bacteria. She has not recently started any new medications. What is the most likely diagnosis in this patien... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> An 82-year-old right-handed woman is brought in by ambulance after being found down in her home. On presentation, she is found to be awake but does not follow directions or respond to questions. She is able to speak and produces a fluent string of nonsensical words and sounds. She does not appear to be bo... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-year-old Hispanic male was admitted to the hospital for pain in his left thigh that has increased in severity over the past several months to the point that he can no longer walk. His mother explained that he had the pain about a year ago that resolved spontaneously. She also explained that he has had... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 72-year-old woman comes to the physician for follow-up care. One year ago, she was diagnosed with a 3.8-cm infrarenal aortic aneurysm found incidentally on abdominal ultrasound. She has no complaints. She has hypertension, type 2 diabetes mellitus, and COPD. Current medications include hydrochlorothiazi... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 59-year-old man presents to his family practitioner with his wife. He has fallen several times over the past 3 months. Standing up from a seated position is especially difficult for him. He also complains of intermittent dizziness, excessive sweating, constipation, and difficulty performing activities o... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old G4P4031 Caucasian woman presents to the emergency department approx. 10–12 hours after home delivery of a 2.8 kg (6.3 lb) boy. Her last menstrual period is estimated to be around 8 months ago. She had no prenatal care but is well-known to the obstetrics department for multiple miscarriages o... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 58-year-old man presents to the clinic concerned about his health after his elder brother recently became bed-bound due to a brain condition. He has also brought a head CT scan of his brother to reference, as shown in the picture. The patient has type 2 diabetes mellitus, hypertension, osteoarthritis, a... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 45-year-old man comes to the physician for his routine health maintenance examination. He was diagnosed with diabetes mellitus 4 years ago. His medical history is otherwise unremarkable. He takes no medications other than daily metformin. He has consumed a can of beer every night for the past 10 years. ... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 31-year-old man presents for his annual physical exam. The physician fails to palpate a ductus deferens on the left side. An ultrasound confirms absence of the left ductus deferens and further reveals absence of the left epididymis, seminal vesicle, and kidney. Spermogram and reproductive hormones panel... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A researcher is investigating compounds that modulate the cell cycle as possible chemotherapeutic agents against peripheral T-cell lymphoma. The researcher discovers a group of natural compounds with inhibitory activity against histone deacetylases, a class of enzymes that remove acetyl groups from the ly... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 25-year-old man presents to his primary care provider complaining of scrotal swelling. He is a college student and plays basketball with his friends regularly. Two days ago, he sustained an injury close to his thigh. He does not have any significant past medical history. Today, his vitals are normal. A ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 7-year-old boy presents to his primary care physician for a general checkup. The patient has been feeling poorly for the past several weeks and has been losing weight. He states that he often feels weak and too tired to play with his friends. He is no longer interested in many recreational activities he... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 27-year-old woman is admitted to the emergency room with dyspnea which began after swimming and progressed gradually over the last 3 days. She denies cough, chest pain, or other respiratory symptoms. She reports that for the past 4 months, she has had several dyspneic episodes that occurred after the ex... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 47-year-old woman presents to her primary care physician because of pain on urination, urinary urgency, and urinary frequency for 4 days. This is the third time for her to have these symptoms over the past 7 months. She was recently treated for candidal intertrigo. Vital signs reveal a temperature of 36... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-year-old boy presents to the pediatrician with his parents. He fully vaccinated and met most developmental milestones. His fine motor milestones are delayed; at present, he cannot eat by himself and has difficulty in self-dressing. His intelligence quotient (IQ) is 65. He listens quietly while spoken ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 37-year-old woman presents to the Emergency Department after 8 hours of left sided flank pain that radiates to her groin and pelvic pain while urinating. Her medical history is relevant for multiple episodes of urinary tract infections, some requiring hospitalization, and intravenous antibiotics. In the... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 50-year-old man from India visits his physician complaining of worsening respiratory symptoms. He states that he was diagnosed with emphysema 4 years ago and that, over the past several months, he has developed a chronic productive cough, dyspnea, fatigue, unexplained weight loss, and night sweats. He n... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 45-year-old African American woman presents to her primary care physician for not feeling well. She states she has had a cough for the past week. In addition, she also has abdominal pain and trouble focusing that has been worsening. She states that she has also lost 5 pounds recently and that her gastro... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-month-old boy is brought to the emergency department because of fever, fast breathing, and difficulty feeding for 2 days. His mother reports that he has had recurrent pneumonia and has been hospitalized for severe dehydration secondary to acute gastroenteritis caused by rotavirus infection three times... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 67-year-old woman who was diagnosed with cancer 2 months ago presents to her oncologist with a 6-day history of numbness and tingling in her hands and feet. She is concerned that these symptoms may be related to progression of her cancer even though she has been faithfully following her chemotherapy reg... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old female comes to the physician because of flu-like symptoms and a new rash for 2 days. She denies contacts with sick individuals or recent travel abroad, but recently went camping in Vermont. Vital signs are within normal limits. Examination of the lateral right thigh shows a circular red rin... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 32-year-old female presents to her gynecologist complaining of heavy and irregular vaginal bleeding. One month ago, she underwent a dilation and curettage procedure to remove a hydatidiform mole. On examination, her uterus appears enlarged. Serum ß-hCG is highly elevated. Biopsy of her uterus reveals av... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A day after percutaneous coronary intervention for stable angina, a 63-year-old woman develops severe pain in her right small toe. She has no history of a similar episode. She has had diabetes mellitus for 16 years. After the procedure, her blood pressure is 145/90 mm Hg, the pulse is 65/min, the respirat... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 31-year-old female with a bacterial infection is prescribed a drug that binds the dipeptide D-Ala-D-Ala. Which of the following drugs was this patient prescribed? ---- <<Choices:>> A) Penicillin B) Chloramphenicol C) Vancomycin D) Polymyxin B ---- <<Answer:>> | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 40-year-old male with a history of chronic alcoholism recently received a liver transplant. Two weeks following the transplant, the patient presents with a skin rash and frequent episodes of bloody diarrhea. A colonoscopy is performed and biopsy reveals apoptosis of colonic epithelial cells. What is mos... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 78-year-old woman presents to the ophthalmologist with complaints of painless, blurry vision that has worsened in the past year. She says that she sees halos around lights, and that she particularly has trouble driving at night because of the glare from headlights. On physical exam, the patient has an a... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 48-year-old man comes to the emergency room for a persistent painful erection for the last 4 hours. Three weeks ago, he had a deep vein thrombosis following a 13-hour flight. He also has a history of sickle cell trait, gastroesophageal reflux disease, major depressive disorder, and hypertension. He has ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A microbiology student was given a swab containing an unknown bacteria taken from the wound of a soldier and asked to identify the causative agent. She determined that the bacteria was a gram-positive, spore-forming bacili, but had difficulty narrowing it down to the specific bacteria. The next test she p... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 28-year-old male presents to trauma surgery clinic after undergoing an exploratory laparotomy, femoral intramedullary nail, and femoral artery vascular repair 3 months ago. He suffered multiple gunshot wounds as a victim of a drive-by shooting. He is progressing well with well-healed surgical incisions ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> You are conducting a study comparing the efficacy of two different statin medications. Two groups are placed on different statin medications, statin A and statin B. Baseline LDL levels are drawn for each group and are subsequently measured every 3 months for 1 year. Average baseline LDL levels for each gr... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 33-year-old woman is brought to the the ED via ambulance for sudden onset of blindness. Her past medical history is significant only for smoking, and her only home medication is oral contraception pills. The patient is remarkably calm. On exam, her temperature is 98.2 deg F (36.8 deg C), and pulse is 95... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 53-year-old diabetic man with cellulitis of the right lower limb presents to the emergency department because of symptoms of fever and chills. His pulse is 122/min, the blood pressure is 76/50 mm Hg, the respirations are 26/min, and the temperature is 40.0°C (104.0°F). His urine output is < 0.5mL/kg/h. ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 69-year-old man with hypertension and congestive heart failure is brought to the emergency department because of a 9-day history of worsening shortness of breath and swelling of his legs. His respirations are 25/min, and blood pressure is 160/98 mm Hg. Pulse oximetry on 5 L O2 via nasal cannula shows an... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 29-year-old man presents for the evaluation of infertility. He has a history of recurrent lower respiratory tract infections, productive cough, abdominal pain, and diarrhea. Physical examination reveals clubbing and bilateral crackles on chest auscultation. Chest X-ray reveals increased pulmonary markin... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 3-week-old male infant is brought to the physician for evaluation of poor feeding and recurrent episodes of facial grimacing. He was delivered at term after an uncomplicated pregnancy. He is at the 3rd percentile for length and 5th percentile for weight. Physical examination shows yellow discoloration o... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 24-year-old woman presents to her primary care physician with a 3 day history of pain with urination. She says that this pain has been accompanied by abdominal pain as well as a feeling like she always needs to use the restroom. She has no past medical history and no family history that she can recall. ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 3-year-old girl is brought to the physician for a well-child examination. She was born at term and has been healthy since. She can climb up and down the stairs and can pedal a tricycle. She has difficulty using a spoon to feed herself but can copy a line. She speaks in 2- to 3-word sentences that can be... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 22-year-old woman presents to the emergency department with a 3-day history of fever and abdominal pain. She says that the pain is located in the left lower quadrant of the abdomen and feels crampy in nature. The pain has been associated with bloody diarrhea and joint tenderness. She has no past medical... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 45-year-old man presents with a 2-week history of night sweats, cough, and a fever. Past medical history includes HIV infection diagnosed 10 years ago, managed with HAART. He says he hasn’t been compliant with his HAART therapy as prescribed because it is too expensive and he is currently unemployed wit... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> Research is being conducted on embryoblasts. The exact date of fertilization is unknown. There is the presence of a cytotrophoblast and syncytiotrophoblast, marking the time when implantation into the uterus would normally occur. Within the embryoblast, columnar and cuboidal cells are separated by a membr... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 62-year-old man is brought to the emergency department because of right-sided weakness and subjective decreased sensation that started 30 minutes ago. The patient reports that his symptoms started to ease 5 minutes after onset and have now completely resolved. He has hypertension, hyperlipidemia, and ty... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 6-year-old girl with no significant past medical, surgical, social, or family history presents to urgent care for a new itchy rash on the fingers of her right hand. When questioned, the patient notes that she recently received a pair of beloved silver rings from her aunt as a birthday present. She denie... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> An investigator is studying a drug that acts on the thyroid hormone pathway. Levels of serum free T3 and T4 in healthy participants are measured before and after administration of the drug. After administration, there is a decrease in the average serum free T3 level, while the average serum free T4 level ... | D |
Answer the following medical question with the correct letter choice: | <<Question:>> A 9-year-old girl is brought to the emergency department for sudden-onset slurring of speech and weakness of her right arm and leg. She has a mild intellectual disability. She is at the 10th percentile for weight and at the 85th percentile for height. Physical examination shows bilateral inferonasal sublu... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 23-year-old G1P0 woman presents to the emergency department with regular and painful contractions that occur every 3 minutes. She was at home cooking dinner when she experienced a deluge of clear fluid between her legs followed by painful contractions. The patient has a past medical history of obesity. ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 50-year-old woman presents to the emergency department with mild chest pressure that does not radiate to her left arm or jaw. These episodes have been ongoing several times over the last 24 hours. Her medical history is significant for diabetes mellitus type II and HTN for which she takes metformin and ... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 56-year-old man is brought to the emergency department 25 minutes after the sudden onset of severe pain in the middle of his chest. He describes the pain as tearing in quality; it radiates to his jaw. He has hypertension. He has smoked one pack of cigarettes daily for the 25 years. Current medications i... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A tall, 25-year-old man is brought to the ED by his friend after sudden difficulty breathing while smoking a cigarette. In the trauma bay he is tachypneic, but able to talk to you. Vital signs show that he is afebrile and tachycardic with blood pressure of 115/60. Physical exam reveals hyperresonance and ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 23-year-old woman makes an appointment with a dermatologist for treatment of acne. As a result, she feels uncomfortable in public and feels as though everyone is looking at the pimples on her face. She cleans her face several times a day with face wash and avoids using make-up. She has tried many face c... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A group of environmental health scientists recently performed a nationwide cross-sectional study that investigated the risk of head and neck cancers in patients with a history of cigar and pipe smoking. In collaboration with three teams of epidemiologists that have each conducted similar cross-sectional s... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 2-month-old girl is brought to the physician for a well-child examination. She was born at 32 weeks' gestation and weighed 1616 g (3 lb 9 oz); she currently weighs 2466 g (5 lb 7 oz). She is exclusively breastfed and receives vitamin D supplementation. Physical examination shows no abnormalities apart f... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 3-year-old boy is brought to the physician because of a 3-day history of a pruritic skin rash on his chest. His mother says that he has no history of dermatological problems. He was born at term and has been healthy except for recurrent episodes of otitis media. His immunizations are up-to-date. He appe... | A |
Answer the following medical question with the correct letter choice: | <<Question:>> A 37-year-old woman comes to the physician for a 6-month history of headaches, anorexia, and vomiting. She has had a 10-kg (22-lb) weight loss during this period. She has type 1 diabetes mellitus for which she takes insulin. The patient's mother and sister have hypothyroidism. Her blood pressure is 80/60 ... | C |
Answer the following medical question with the correct letter choice: | <<Question:>> A 2350-g (5-lb 3-oz) male newborn delivered at 28 weeks’ gestation develops rapid breathing, grunting, and subcostal retractions 2 hours after delivery. The mother did not receive prenatal care. His temperature is 36.5°C (97.7°F), pulse is 168/min, respirations are 88/min, and blood pressure is 70/40 mm H... | B |
Answer the following medical question with the correct letter choice: | <<Question:>> A 9-month-old boy is brought to the pediatrician for evaluation of blue discoloration of the fingernails. His parents recently immigrated from Venezuela. No prior medical records are available. His mother states that during breastfeeding, he sweats and his lips turn blue. Recently, he has begun to crawl a... | C |
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