Abdominal compartment syndrome

In the management of a patient with suspected abdominal compartment syndrome (ACS) following laparotomy, what is the initial step?

1: Administer diuretics to enhance urine output.
2: Perform an immediate decompressive laparotomy.
3: Measure bladder pressure to assess intra-abdominal pressure.
4: Increase IV fluid to boost renal perfusion.