You just finish solving a problem calculating the speed of a…

You just finish solving a problem calculating the speed of a car after it accelerated out of a stop and ended up resulting in a speeding ticket. The speed limit was 55 mph. You calculate that the car’s final maximum speed was 35 m/s. Assess the value of our calculation. Is it reasonable in the context of the problem? Was the speeding ticket deserved?

A 38 year old woman with a history of rheumatoid arthritis (…

A 38 year old woman with a history of rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) is being seen for a routine follow-up visit. The results of her CBC are as follows: hemoglobin 11.0mg/dl, hematocrit 34%, and MCV 85fl. The serum ferritin and total iron binding capacity (TIBC) are within normal range. Which of the following types of anemia is most likely? 

A 48-year-old woman calls 911 and is brought to the emergenc…

A 48-year-old woman calls 911 and is brought to the emergency room complaining of a sudden onset of dyspnea. She reports she was standing in the kitchen making dinner, when she suddenly felt as if she could not get enough air, her heart started racing, she became lightheaded and felt as if she would faint. She denied chest pain or cough. Her medical history is significant for gallstones, for which she underwent a cholecystectomy 2 weeks ago. The procedure was complicated by a wound infection, requiring her to stay in the hospital for 8 days. She takes no medications regularly, only acetaminophen as needed for pain at her abdominal incision site. On examination, she is tachypneic with a respiratory rate of 28 breaths per minute, oxygen saturation is 84% on room air, heart rate 124, and blood pressure 118/89 mm Hg. She appears uncomfortable, diaphoretic, and frightened. Her oral mucosa is slightly cyanotic, her jugular venous pressure is elevated, and her chest is clear to auscultation. Her apical heart rhythm is tachycardic but regular rhythm with a loud S2 in the pulmonic area, no gallop or murmur. Her abdominal examination is benign. Incision site is normal without signs of infection. Her right leg is moderately swollen from mid-thigh to her feet, and her thigh and calf are mildly tender to palpation. Laboratory studies including cardiac enzymes are normal, her electrocardiogram (ECG) reveals sinus tachycardia, and her chest X-ray is interpreted as normal.  Which physical exam findings support your previous diagnosis? 

A 52-year-old man presents to your office for an acute visit…

A 52-year-old man presents to your office for an acute visit because of coughing and shortness of breath. He is well known to you because of multiple office visits in the past few years for similar reasons. He has a chronic “smoker’s cough,” but reports that in the past 2 days his cough has increased, his sputum has changed from white to green in color, and he has had to increase the frequency with which he uses his albuterol inhaler. He denies having a fever, chest pain, peripheral edema, or other symptoms. His medical history is significant for hypertension, peripheral vascular disease, and two hospitalizations for pneumonia in the past 5 years. He has a 60-pack-year history of smoking and continues to smoke two packs of cigarettes a day.On examination, he is in moderate respiratory distress. His temperature is 98.4°F, his blood pressure is 152/95 mm Hg, his pulse is 98 beats/min, his respiratory rate is 24 breaths/min, and he has an oxygen saturation of 94% on room air. His lung examination is significant for diffuse expiratory wheezing and a prolonged expiratory phase of respiration. There are no signs of cyanosis.   What diagnostic test would your order next? 

A 46-year-old man complains of having a morning cough for th…

A 46-year-old man complains of having a morning cough for the past 5 years. He has smoked 1 pack per day for 30 years and has recently noticed wheezing. He has also experienced dyspnea for several months. On physical exam his BMI is 31, HEENT: flushed face, Lungs: scattered rhonchi, slight wheeze, normal AP diameter, CXR shows rounded hemi-diaphragms. What is the most likely diagnosis?