Which treatment is commonly recommended for post-renal acute kidney injury caused by obstruction?

In cases of post-renal acute kidney injury, the treatment primarily involves relieving the obstruction that is causing the kidney impairment. A Foley catheter is a specific tool designed to help with this kind of obstruction, particularly when there is urinary retention due to issues such as an enlarged prostate, bladder stones, or strictures.

By using a Foley catheter, healthcare providers can effectively drain urine from the bladder. This process alleviates the pressure buildup resulting from obstruction, which can prevent further kidney damage and allow for the potential recovery of renal function.

The other options, while they may be part of supportive care in kidney injury cases, do not directly address the underlying cause of post-renal acute kidney injury. Administering normal saline or increasing fluid intake might be beneficial in other contexts of kidney injury but would not resolve the obstruction. Medications to promote urination could provide symptomatic relief but wouldn't alleviate the blockage itself, which is the critical issue in post-renal acute kidney injury.