A 37year-old male diagnosed with hypertension has been treated with a low sodium diet and hydrochlorothiazide (HCTZ) 50 mg qd for the past two months. He denies Family history of cardiovascular disease. At today's follow-up visit his BP=150/90 and T=I00 F. Physical examination reveals no bruits, clear chest, no atrial gallop, edema and tenderness of the left ankle, and an intact neurological system. Which laboratory values will provide the most useful follow-up information

Ahealthy 26-year-old woman sustained a significant crush injury to her right upper extremity while on the job at a local construction site. she was brought to the emergency department and subsequently underwent pinning and reconstructive surgery and received perioperative broad-spectrum antibiotics. her blood pressure remained normal throughout her hospital course. on the second hospital day, a medical consultant noted a marked increase in her creatinine, from 0.8 to 1.9 mg/dl. her urine output dropped to 20 ml/h. serum creatine kinase was ordered and reported as 3400 units/l. questions what are the primary causes of this patient’s acute kidney injury? how should her kidney injury be categorized (as prerenal, intrarenal, or postrenal)? how should she be treated?