Final answer:
Fluid needs in acute renal failure are determined by the severity of the condition, level of renal function, and other factors like body water and electrolyte disturbances.
Step-by-step explanation:
The fluid needs in acute renal failure are determined by several factors. One important factor is the type of renal failure, whether it is acute or chronic. In acute renal failure, fluid needs are determined by the severity of the condition, the level of renal function, and other factors like body water and electrolyte disturbances.
For example, in cases of hypovolemia (decreased blood volume) due to shock or dehydration, fluid needs would be higher to restore blood volume. On the other hand, excessive diuretic use may cause fluid loss, so fluid needs would be higher to compensate for the loss. Additionally, in obstructed urinary catheter cases, the fluid needs would be determined by the cause of the obstruction.