About Dr. Ray Makar

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So far Dr. Ray Makar has created 191 blog entries.

Repeated USMLE Questions Step 1 (80)

A 27 year-old man presents with a movement disorder characterized by restlessness and a compelling needs to be in a constant motion. He had a diagnosis of psychosis two weeks ago and he started treatment right after his last visit. What is the most likely diagnosis? A- Restless leg syndrome B- Dystonia C- Akathisia D- [...]

By | November 19th, 2016|USMLE Step 1|0 Comments

Repeated USMLE Questions Step 1 (79)

A 54-year-old man complains of sudden onset of severe chest tearing pain. The pain started an hour ago and radiating to his upper back. On physical examination, his pulse is 90/min., his blood pressure in his left arm is 140/90 while it is 110/70 in his right arm. Chest x-ray shows widening of the mediastinum. [...]

By | November 13th, 2016|USMLE Step 1|0 Comments

Repeated USMLE Questions Step 1 (78)

A 13-year-old boy with a history of sickle cell disease complains of severe pain in his right leg. History, physical examination and radiology reveal diagnosis of osteomyelitis. What is the causative organism most likely responsible for this infection? A-Listeria monocytogenes B-Pseudomonas aeruginosa C-Salmonella enteritidis D-Serratia marcescens E-Streptococcus viridans Answer: Salmonella enteritidis is the most likely [...]

By | November 6th, 2016|USMLE Step 1|2 Comments

Repeated USMLE Questions Step 1 (77)

A 42-year-old woman with a history of renal insufficiency visits her physician with a recent respiratory tract infection. Her physician wants to prescribe antibiotic for her infection. Which of these antibiotics does NOT need adjustment because of her renal insufficiency? A-Cefazolin B-Cefoxitin C-Ceftriaxone D-Cephalexin E-Fosfomycin Answer: The only drug of the listed ones that is [...]

By | November 1st, 2016|USMLE Step 1|0 Comments

What is PrEP?

PrEP stands for a drug used in PreExposure Prophylaxis against HIV infection. Each tablet contains TDF (300 mg) and FTC (200 mg). PrEP is used in cases of HIV-negative persons who are at increased risk of acquiring HIV infection such as: 1- Those who have sex with HIV-positive partner. 2- Those who have a recent history [...]

By | October 30th, 2016|USMLE Highlights|0 Comments

Repeated USMLE Questions Step 1 (76)

A 33-year-old man presents to his physician to discuss his plans for treatment of hyperthyroidism. One of the options is potassium perchlorate. What is the mechanism of action of potassium perchlorate as anti-thyroid? A-Blocking of coupling of iodo-tyrosines B-Blocking of peroxidase catalyzed reactions C-Blocking of peripheral deiodination of T3 and T4 D-Competitive inhibition of iodide [...]

By | October 30th, 2016|USMLE Step 1|0 Comments

Repeated USMLE Questions Step 2 CK (76)

A 27- year-old, 27 week-pregnant woman, on her fourth pregnancy was involved in a motor vehicle accident 5 hours ago. She was taken to the emergency room (ER) . After a thorough examination, she was found stable with no complaint. Now, she feels lower abdominal pain and vaginal bleeding. She is dizzy and distressed. She [...]

By | October 26th, 2016|USMLE Step 2 CK|0 Comments

Repeated USMLE Questions Step 1 (75)

Workers in the aniline dye industry are more susceptible to bladder cancer than general population. Studies show that animals, when exposed to beta-naphthylamine develop liver cancer but not bladder cancer. What is the most likely explanation of this finding A-Metabolism of beta-naphthylamine by human cytochrome 450 system in the liver B-Detoxification of beta-naphthylamine by glucuronic [...]

By | October 26th, 2016|USMLE Step 1|0 Comments

Repeated USMLE Questions Step 2 CK (75)

A 37 year-old Congress candidate comes to your clinic for a follow-up visit. She had a seizure last week witnessed by her campaign manager. She had stiffness of her whole body followed by jerking movements by her arms, trunk and legs for 30 seconds and then she fell in a deep sleep. Her campaign manager [...]

By | October 24th, 2016|USMLE Step 2 CK|0 Comments