Free Questions and Answers for All Medical Students all over the World
Dr Ray Makar A 56 year old man is taken to the emergency room after having grand mal seizure during a staff meeting. He has no history of seizure but he complains lately of recurrent headaches on the morning and decrease in intensity later in the day. Laboratory investigations and imaging studies are performed. Which of these tests … Read more
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 iodotyrosines B-Blocking of peroxidase catalyzed reactions C-Blocking of peripheral deiodination of T3 and T4 D-Competitive inhibition of iodide … Read more
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 history of an … Read more
A 48 year-old man, who visited his daughter in London last week, complains of sudden severe pain and swelling in his right leg during his flight back to the USA. He is taken to the hospital and ultrasound is performed. It reveals femoral vein thrombosis. What is the most likely contributed to this finding? A-Hypertension … Read more
A 54 year-old man with a history of chronic obstructive pulmonary disease (COPD) presents by his son to the emergency room semi-unconscious with shortness of breath. He has nausea, diarrhea and restlessness for the last four hours. His arterial oxygen saturation is 88% with room air. His ECG shows normal sinus rhythm with non-specific changes … Read more
A 62-year-old man visits his physician with a complaint of a breast lump. On examination, there is no fever and vital signs are within normal limits. There is a hard lump in his right breast and nipple retraction. What is the most appropriate next step of action? A-X-Ray of the chest B-Ultrasound guided biopsy C-Mammography … Read more