As physicians, we need to know some definitions in Genetics, which are related directly to our practice and guide us to diagnose and treat many genetic disorders. These items include genome, genotype, phenotype, genetic code, gene expression, etc. Which one of the following choices describes the definition of a phenotype? A- Genetic constitution of an […]
Repeated USMLE Questions Step 2 CK- 420
A 74-year-old woman visits her physician complaining of a new onset of fatigue and temporal headache. She lost about 5-7 pounds over the last year. She also has morning stiffness for one hour accompanied by aching in the shoulders and hips. He noticed that his vision was deteriorating during the last year. Physical examination is […]
Repeated USMLE Questions Step 2 CK- 419
A 62-year-old woman visits her physician for a routine physical examination. She has a long history of lower back pain and she takes ibuprofen as needed. She also takes levothyroxine for hypothyroidism. She exercises daily for 30 minutes and follows a regular diet. On examination, her pulse is 45/min. Holter monitor reveals a regular pulse […]
Repeated USMLE Questions Step 2 CK- 418
A 37-year-old woman presents to the office for a consultation about family planning. She is married for 11 years and she has never had any extra-marital relationships. They have been tested negative for HIV infection. She hopes to become pregnant and to stop using condoms. She had normal Pap smears for the past 18 years. […]
Repeated USMLE Questions Step 1- 264
A 43-year-old man presents to your clinic for a follow up after colon biopsy taken last week. He has a history of constipation and blood in stools for 6 months. Biopsy reveals colon cancer. After you told him the bad news, he looked down and told you that constipation was not that bad. He seeks […]
Repeated USMLE Questions Step 1- 263
A 48-year old man presents to the emergency room with severe headache and blurred vision. His blood pressure is 230/140. Ophthalmologic examination reveals blurred optic discs with indistinct margins. An intravenous drip of nitroprusside is started. What is the mechanism of action of this medication? A- Alpha adrenergic antagonist B- Beta adrenergic antagonist C- Ganglion […]
Repeated USMLE Questions Step 2 CK- 417
A 37-year-old woman presents to the emergency room complaining of general tingling sensation all over her body and spasm of her right hand for 1 hour. Her spasm is worsening and she feels as her body becomes more rigid. She had undergone subtotal thyroidectomy 2 weeks ago and the incision is healed and clean. Blood […]
Repeated USMLE Questions Step 1- 262
A 73-year-old man with a history of benign prostatic hyperplasia (BPH) presents to the emergency room complaining of repeated falls. His wife admits that during the past 3 weeks he has had unsteady gait, urinary incontinence and memory disturbances. His medical, surgical and family histories are unremarkable. He has never smoked or taken any recreational […]
Medical Question of the Day- 32
A 57-year-old man with a history of bleeding per rectum visits his physician to discuss the results of his recent CT colpography test. The test was positive for the presence of a colorectal polyp. The sensitivity and specificity of this test to detect a colorectal polyp is 75% and 90% respectively. What is the probability […]
Repeated USMLE Questions Step 2 CK- 416
A 25-year-old man presents to his physician for his first annual physical examination. He moved to the city for a new job and he got health insurance so, he decided to do regular annual checks. His past medical, surgical and family histories are unremarkable. He does not smoke or drink alcohol. He does not take […]