| Objective: To study the effects of dehydration, by using the indices of prerenal azotemia and orthostasis, on the rehabilitation outcomes of elderly orthopedic patients. |
| Medical textbooks provide urine biochemistry profiles to differentiate prerenal causes from intra renal causes of AKI in oliguric patients. |
| The trial also included patients with reversible prerenal acute kidney injury based on biomarkers of injury alone. |
| The exclusion or identification and separate treatment of patients with prerenal AKI may reduce their confounding effect on results. |
| Conditions that place patients at risk for this condition include untreated prerenal azotemia and the use of nephrotoxic drugs or exposure to other nephrotoxins. |
| In addition, patients with raised urea and creatinine levels, which subsequently improved without any specific intervention, were defined as having prerenal azotemia. |
