Postoperative Urologic Complications
Postoperative problems after urological surgery follow predictable patterns — fever, bleeding, urine leak, obstruction, ileus, sepsis and DVT/PE — and a structured, timeline-based approach (not a reflex 'it's a UTI') gets the diagnosis right.
The big picture
After urological surgery, complications cluster into recognisable categories: fever (by timeline: early atelectasis/inflammation, then UTI/wound, later DVT/PE or anastomotic leak/collection), bleeding (primary, reactionary, secondary), urine leak from an anastomosis, obstruction (clot, oedema, stent issues), ileus, sepsis, and venous thromboembolism. A drain that suddenly produces high-creatinine fluid signals a urine leak.
Use a structured, timeline-based hunt — postoperative fever is not always a UTI; send drain fluid creatinine for suspected leaks and image for collections/obstruction.
Red flags
Work up by timeline — consider collection, leak, DVT/PE, chest before anchoring on UTI.
It's urine — there is an anastomotic/urinary leak; image and manage.
Consider pulmonary embolism — investigate, do not dismiss as infection.
Symptom sorter
Day of onset narrows the cause.
Diagnostic algorithm
Each step answers one question. Tap to expand.
Treatment ladder
Diagnose the specific complication and treat it directly — source control for sepsis/collections, haemostasis for bleeding, drainage/diversion for leaks, and prophylaxis/treatment for VTE.
Complications
- Haemorrhage, sepsis, anastomotic leak/fistula, obstruction, VTE, ileus
- Re-operation risks, drain/catheter complications, anticoagulation bleeding
- Prophylaxis (VTE, antibiotics), meticulous technique, structured postop monitoring
- Targeted source control and therapy for the identified complication
Summary tables
Postoperative complications — quick map
| Problem | Clue / test | Action |
|---|---|---|
| Fever | Timeline of onset | Targeted work-up (not reflex UTI) |
| Urine leak | Drain creatinine >> serum | Drainage/stent/diversion |
| Bleeding | Haemodynamics + timing | Resuscitate; source control |
| Obstruction | Catheter/stent + imaging | Restore drainage |
| VTE | Calf/chest signs | Imaging + anticoagulation |
Memory hooks
Postop fever ≠ automatic UTI — use the timeline.
High drain creatinine = urine leak.
Bleeding: primary / reactionary / secondary.
Resuscitate → investigate → source control.
Don't forget DVT/PE.
Board traps
Postop fever — the answer depends on the day, not 'always UTI'.
High drain creatinine misread as serous fluid.
Low-grade fever with breathlessness dismissed instead of investigated for PE.
Clinical cases
Three days after a radical cystectomy with ileal conduit, a patient has rising drain output, low-grade fever and a creeping creatinine. Someone suggests starting antibiotics for a presumed UTI.
What should be done to clarify the diagnosis?