Stem: A 66-year-old man with a history of coronary artery di…

Stem: A 66-year-old man with a history of coronary artery disease develops chest pain during exertion. Laboratory tests reveal elevated troponin levels. His condition is attributed to myocardial ischemia. Which of the following is the earliest and most critical consequence of cellular hypoxia in this scenario?

A 25-year-old female comes to you with a 4-months history of…

A 25-year-old female comes to you with a 4-months history of fatigue. Her history is unremarkable; she had no major medical illness. She has noticed that during the past 12 months her menstrual periods have become heavier and longer for 7 to 9 days with very heavy flow. On examination, the patient appear pale , BP 100/70 mmHg. Blood smear is shown below. Her Hb is 9.5 g/dl. What is the most likely cause of her disease?  

A 27-year-old man presents to the emergency department with…

A 27-year-old man presents to the emergency department with weakness and a fever for the past week. The patient is homeless and has a past medical history of alcohol and IV drug abuse. His temperature is 102°F (38.9°C), blood pressure is 107/68 mmHg, pulse is 120/min, respirations are 17/min, and oxygen saturation is 98% on room air. Physical exam is notable for a tremulous patient with track marks in from of elbow and a murmur over the left lower sternal border. Painful nodules are seen in his hands. Blood cultures are drawn and the patient is started on vancomycin and ceftriaxone and is admitted to the ICU. The patient’s fever and symptoms do not improve despite antibiotic therapy for which the initial identified organism is susceptible. Cultures currently reveal MRSA as one of the infective organisms. Which of the following is the best next step in management?