Nephrostogram

• Can be performed immediately or deferred till the system has been adequately drained or in the presence of infection

• Between 50 and 100 mL of Urograffin 150 is used (but any HOCM or LOCM 150-200-strength media can be employed)

• Any residual contrast should be removed from an obstructed system to minimize risk of a chemical pyelitis

• Simple nephrostogram can be performed as an outpatient procedure, but overnight hospital stay is required if a percutaneous procedure has been performed

The effective radiation dose to the patient varies with the length of fluoroscopic exposure but usually ranges between 1 and 5 mSv.

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