Revision sheet

Blunt renal trauma: AAST grades

6 steps, each one the authored title and caption from the interactive animation, with the frame captured from that step. Read it before the case, or print it and work through the steps in order.

Teaching only, not for diagnosis or treatment decisions. The text on this sheet is the animation's own step copy, reproduced verbatim.

Open the animation All revision sheets Download the PDF

UrOops3D · UroRef · © Nity G

  1. 01

    The kidney in situ

    Blunt renal trauma: AAST grades. Step 1: The kidney in situ. Captured frame from the interactive animation.
    • The right kidney and its zones: cortex, medulla, collecting system, hilar pedicle.
    • The AAST grade is decided by how deep the injury runs and whether the collecting system or pedicle is involved.
  2. 02

    Grade I-II: contusion / subcapsular haematoma

    Blunt renal trauma: AAST grades. Step 2: Grade I-II: contusion / subcapsular haematoma. Captured frame from the interactive animation.
    • Grade I: contusion or a subcapsular haematoma without a laceration.
    • Grade II: a perirenal haematoma, or a cortical tear less than 1 cm deep without urinary extravasation.
    • Management is guided by clinical stability.
  3. 03

    Grade III: cortical laceration

    Blunt renal trauma: AAST grades. Step 3: Grade III: cortical laceration. Captured frame from the interactive animation.
    • A cortical laceration more than 1 cm deep, without rupture into the collecting system or urinary extravasation.
    • The injury depth and clinical stability guide assessment and monitoring.
  4. 04

    Grade IV: collecting system / segmental vessel

    Blunt renal trauma: AAST grades. Step 4: Grade IV: collecting system / segmental vessel. Captured frame from the interactive animation.
    • The tear now reaches a calyx: urine extravasates with haematuria, and segmental-vessel injury bleeds: a pseudoaneurysm can declare itself days later.
  5. 05

    Grade V: shattered kidney / hilar avulsion

    Blunt renal trauma: AAST grades. Step 5: Grade V: shattered kidney / hilar avulsion. Captured frame from the interactive animation.
    • The kidney is shattered into devitalised fragments or the hilum is avulsed: no enhancement, no control.
    • Instability explores, and exploration in shock usually means nephrectomy; a stable grade V may still be managed without surgery in selected centres.
  6. 06

    Management: embolise or explore

    Blunt renal trauma: AAST grades. Step 6: Management: embolise or explore. Captured frame from the interactive animation.
    • Stable with a blush: angiography and selective embolisation from femoral access, nephron-sparing.
    • Failing resuscitation: explore with proximal control first, accepting that renal exploration in shock usually becomes nephrectomy.

Derived from RenalTraumaScene.tsx at build time: every step title and caption above is the authored ProcedureDef text, reproduced verbatim, and this page shares its readable-points renderer with the animation itself. 6 of 6 steps have a captured frame.

Text fingerprint 25f1a6f3e5f3264c. A caption edit without a re-capture fails the production check, so the sheet and the animation cannot drift apart silently.