🐸
LEAP YEAR SALE SAVE 25% NOW
Medicine (MD/DO)
/
Courses
/
Pathology
/
Acute & Chronic Kidney Disease
/
Post Renal Acute Kidney Injury (AKI) Diagnosis and Management

Master Post Renal Acute Kidney Injury (AKI) Diagnosis and Management with Picmonic for Medicine

With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing.

DOWNLOAD PDF
Post Renal Acute Kidney Injury (AKI) Diagnosis and Management

Recommended Picmonics

picmonic thumbnail
Prerenal Acute Kidney Injury Pathophysiology and Presentation
picmonic thumbnail
Chronic Kidney Disease Early Symptoms Assessment
picmonic thumbnail
Acute Tubular Necrosis
picmonic thumbnail
Chronic Kidney Disease Late Symptoms Assessment
picmonic thumbnail
Chronic Kidney Disease Interventions

Post Renal Acute Kidney Injury (AKI) Diagnosis and Management

Injured Kidney leaning on a Post with Diagnosis Computer and Manager
CristianCazac
8 KEY FACTS
DIAGNOSIS
Physical Examination
Physical Examination

Physical Examination in a patient with post-renal AKI may reveal a distended bladder and abdominal pain.

BUN:Creatinine ratio of 20:1 in the Initial Stages

Early Bird, Early-sun, Bun with Cr-eam Ratio of (20) Dollar-bill to (1) Wand

The BUN:Cr ratio in the initial stages of post-renal AKI is typically at or above 20:1. This is similar to pre-renal acute kidney injury and can be a source of confusion. As such, the BUN:Cr ratio cannot be used alone to establish a diagnosis of either pre-renal or post-renal AKI. Further diagnostic studies are needed to differentiate between these 2 diseases.

BUN:Creatinine ratio of 10:1 in the late stages
Running late runner, Late-moon Bun with Cr-eam Ratio of (10) Tin to (1) Wand

The BUN:Cr ratio in the late stages of post-renal AKI is typically at or above 10:1. This ratio is similar to that which is seen in intrinsic AKI and can be a source of confusion.

As the obstruction persists for a prolonged period of time and the kidney undergoes permanent damage, more tubular cells die. The increased tubular cell death is similar to that which is seen in acute tubular necrosis, a subtype of intrinsic AKI. Hence, the BUN:Cr creatinine ratio in the late stages of post-renal AKI is similar to that of intrinsic AKI.

The BUN:Cr ratio cannot be used alone to establish a diagnosis of either intrinsic or post-renal AKI. Further diagnostic studies are needed to differentiate between these 2 diseases.

Urine Osmolality <350 mOsm/kg
Urinal Ozzy-mole Less-than 350, 3-tree and 50-cent Rapper

The Urine Osmolality in post renal AKI is typically below 350 mOsm/kg.

Variable Fractional Excretion of Sodium (FENa)
Up and Down Arrow FENA-agent

The FENA is variable and cannot be used to distinguish post-renal AKI from pre-renal or intrinsic AKI.

Ultrasound
Ultrasound

Ultrasound can be used to evaluate the degree of hydronephrosis present in patients with post-renal acute kidney injury.

CT Scan
Cat-scanner

CT scan can be used to diagnose the cause of the post-renal acute kidney injury as well as the degree of hydronephrosis.

MANAGEMENT
Treat Underlying Cause
Treat Underlying Attacker

There are multiple etiologies of post-renal acute kidney injury including: benign prostatic hyperplasia, neoplasms, incomplete bladder emptying due to autoimmune diseases such as multiple sclerosis, and other causes of bilateral kidney outflow obstruction. Severe acute obstructions can cause permanent damage to the kidney. Complete recovery is possible if the obstruction is relieved within 14 days of onset.

DOWNLOAD PDF

Take the Post Renal Acute Kidney Injury (AKI) Diagnosis and Management Quiz

Picmonic's rapid review multiple-choice quiz allows you to assess your knowledge.

It's worth every penny

Our Story Mnemonics Increase Mastery and Retention

Memorize facts with phonetic mnemonics

Unforgettable characters with concise but impactful videos (2-4 min each)

Memorize facts with phonetic mnemonics

Ace Your Medicine (MD/DO) Classes & Exams with Picmonic:

Over 1,860,000 students use Picmonic’s picture mnemonics to improve knowledge, retention, and exam performance.

Choose the #1 Medicine (MD/DO) student study app.

Picmonic for Medicine (MD/DO) covers information that is relevant to your entire Medicine (MD/DO) education. Whether you’re studying for your classes or getting ready to conquer the USMLE Step 1, USMLE Step 2 CK, COMLEX Level 1, or COMLEX Level 2, we’re here to help.

Works better than traditional Medicine (MD/DO) flashcards.

Research shows that students who use Picmonic see a 331% improvement in memory retention and a 50% improvement in test scores.