Shock and Resuscitation in Urology
Shock is inadequate tissue perfusion — in urology it is usually haemorrhage or urosepsis, and the life-saving move is resuscitation plus source control (often drainage).
The big picture
Shock means the circulation is failing to perfuse tissues. Sort it into hypovolaemic (bleeding/fluid loss), distributive (septic — the urology classic), and obstructive (e.g. tension/tamponade physiology). The common pathway is falling perfusion, rising lactate, and organ injury unless reversed.
Resuscitate and control the source together — and in the septic, obstructed kidney, urgent drainage is the source control that saves the patient.
Red flags
The bedside signature of shock — act before the blood pressure collapses.
A marker of hypoperfusion and a target for resuscitation.
Urosepsis from an obstructed kidney — drain urgently.
Haemorrhagic shock risk — resuscitate, irrigate, stop the bleeding.
Both a sign of poor perfusion and a resuscitation endpoint to monitor.
Mechanism pathway
Tap any step to see why it happens.
Diagnostic algorithm
Each step answers one question. Tap to expand.
Treatment ladder
Restore perfusion and control the source simultaneously; in urology the decisive source control is often drainage or haemostasis.
Complications
- Multi-organ failure
- Acute kidney injury
- Death if uncorrected
- Over-resuscitation/oedema
- Transfusion reactions
- Post-obstructive diuresis after drainage
- Early recognition and source control
- Endpoint-guided (not excessive) fluids
- Critical care support
- Replace post-obstructive losses
- Definitive treatment of the cause once stable
If treatment fails
If the patient is not improving, ask: is the source actually controlled, or is there undrained pus, ongoing bleeding, or a second source?
Memory hooks
Shock = perfusion failure.
Resuscitate AND control the source.
Fever + obstruction → drain.
Bleeding → blood + stop the bleeding.
Watch lactate and urine output.
Board traps
Septic, obstructed kidney managed with IV antibiotics alone — needs urgent decompression.
Persistent shock despite antibiotics — undrained source.
Heavy haematuria with hypotension — resuscitate with blood and stop the bleeding.
Clinical cases
A patient with an obstructing ureteric stone is febrile, tachycardic and hypotensive with a lactate of 4.5 mmol/L.
What are the two simultaneous priorities?