You are most likely to see Brewer infarcts in a patient with: 

Which of the following should be considered in a 44-year-old male with hematuria and hemoptysis with presence of antineutrophil cytoplasmic antibodies? 

What is the classic histologic finding of rapidly progressive glomerulonephritis? 

A male has noticed blood in his urine for the past few weeks, especially during the morning hours. He also complains of fatigue and dyspnea. What is the most likely diagnosis? 

A 71-year-old is admitted to the hospital with fever, cough and worsening shortness of breath for the last 4 days. He reports 3 pillow orthopnea, waking in the middle of the night gasping for air, and inability to urinate in the last 2 days. The patient is found febrile, tachycardic, with an elevated BP of 186/110. Laboratories show leukocytosis, potassium 6.5, bicarbonate 12, BUN 70, and Creatinine 5.6. Chest x-ray shows cephalization of the vasculature and bilateral pleural effusions. The patient is placed on Non-Invasive Positive Pressure Ventilation and is given IV diuresis, antibiotics, bicarbonate, calcium gluconate, insulin, and dextrose. However, his respiratory status deteriorates and he requires emergent intubation. Which of the following is best recommended for this patient's immediate dialysis?