Medicine-Renal Flashcards
Classic Presentation for [Renal Cell Carcinoma] (4)
RCC looks like HAWF!
[Hematuria PAINLESS (most common)] / [Abd palpable Mass] / [Wt loss] / [Flank Pain]
Scrotal varicoceles are in 10% of pts
L RCC in image
Normal range for PCO2
33 - 44 (40 = standard)
List the indications for HemoDialysis - 5
AEIOU
Acidosis (HCO3 <10, pH<7.1)
Electrolytes (⇪K>6.5 / Mg / P) or (⬇︎ Ca+)
Intoxication (Alcohols/ASA/Lithium/Anticonvulsants)
Overloaded BADLY with Fluid
Uremia (⇪ NH3-BUN)
What causes Sundowning?-3
Describe Sundowning
Tx?
[Alzheimers vs. EtOH withdrawal vs. Delirium] –> Circadian Rhythm dysfunction –> [⬆︎confusion & agitation at Sundown]
Tx = Melatonin
It takes Lungs minutes to compensate for acidosis/alkalosis
How long does it take Kidneys to compensate for respiratory acid-base
2 days
What are the 2 main electrolyte SE of Furosemide? ; how do they affect the heart?
- hypOkalemia which can –>VTach!
- hypOmagnesemia which can –>VTach!
High doses of Loop diuretics also cause reversible or permanent hearing loss and/or tinnitus
ADPKD - [Autosomal Dominant Polycystic Kidney Dz]
Describe the Disease - 7
ADPKD
Aneurysm (Berry)
Doomed [HTN and MVP]
[PrOteinuria AND Hematuria]
Kidney Failure (Early vs. Late onset) - Hepatomegaly occurs if cystic involvement
Differentation problem = Etx
Image: Renal Ultrasound which = Dx
BUN Normal range
7- 18
5 main serum electrolyte changes due to Chronic Kidney Dz
- ⬆︎ K+
- ⬆︎Phosphate
- ⬆︎H+
- ⬆︎ Mg
- DEC Ca+
How does Ethylene Glycol affect Kidneys?
EG is converted into oxalate by liver –> binds to Ca+ = retangular envelope shaped Ca+Oxalate crystals –> Tubular damage
Fomepizole MOA and indication
Inhibits [Hepatic Alcohol Dehydrogenase] from converting Ethylene Glycol into oxalate ; EG poisoning
What agents induce Renal dysfunction via Afferent Arteriole vasoconstriction-5
- NSAIDs
- Amphotericin B
- Cyclosporine
- Tacrolimus
- Radiocontrast (also causes oxidant injury)
Identify the type of cast and associated Disease
Muddy Brown Granular Cast = Acute Tubular Necrosis
Identify the type of cast and associated Disease
RBC Cast = Acute Glomerulonephritis
Identify the type of cast ; what 2 Disease is it associated with?
WBC Cast = ATiiN (Acute Tubular interstitial nephritis) or Pyelonephritis
Name 4 classes of drugs to cause Fever
- Anticonvulsants (via Hypersensitivity syndrome)
- Abx
- Anticholinergics
- Sympathomimetic
Hepatorenal syndrome Etx
Portal HTN from liver failure –> MASSIVE Splenic ARTERIAL Vasodilation –> ⬇︎BP –> PreRenal AKI that’s NOT RESPONSIVE TO IVF
Type 1 = Rapid / Type 2 = slow
General beta blockers (propranolol) is used to tx what complication of cirrhosis?
⬇︎ GastroEsophageal variceal bleeding
List Causes of Anion Gap Metabolic Acidosis-9
List Causes of NORMAL-Anion Gap Metabolic Acidosis (NAHA)-7
BUN/Cr Ratio values in
Pre
Intrinsic
Post Renal Failure
UNa values in
Pre
Intrinsic
Post Renal Failure
In a pt w/hematuria, what also in the urine would indicate Glomerular etx specifically?
Protein (On Urine Dipstick)
How is Uremia associated w/GI px?
Uremia can –> Glanzmann Thromboasthenia (dysfunction of Platelet 2b3a Fibrinogen binding R) –> Bleeding! GI px and ASA avoidance is necessary to prevent GI bleeds
Dx = ⬆︎Bleeding Time // Tx = DDaVP (⬆︎release of vWF)
List Risk Factors for Contrast induced nephropathy; What are the 2 most important?
Ctx: SCr > 1.5 or GFR <60
How do you address Contrast induced neprhopathy At-Risk pts, who needs contrast imaging?-4
- avoid high-concentraton radiocontrast
- DC NSAIDs
- [0.9% NS IVF] prior to imaging
- NAC (N-AcetylCysteine) prior to imaging
MAJOR signs/symptoms of Uremia -6
- AMS (FATIGUE)
- Pericardial Rub
- Pruritus
- Nausea
- Hiccups
- Asterixis
List causes of PseudohypOnatremia -2
- ⬆︎ Lipids (TAG/Chylomicrons)
- ⬆︎ Ig
Major causes of [HypOtonic Euvolemic hypOnatremia] -7
- SIADH (SOLC, Brain CA, Pancreatic CA, Drugs)
- Psychogenic
- PostOp
- hypOthyroid
- sick cell reset osmostat (occurs near death)
- Beer Potomania (Beer is low in Na, high in free water)
- Tea & Toast syndrome
How should you evaluate hypOnatremia?
How should you evaluate HYPERNatremia?
Normal GFR range
90 - 120 mL/min but most labs report > 60
Normal Creatinine Clearance for Men vs Women
Men = 97-137
Women = 88-128
Describe the 2 types of Hepatorenal syndrome
Type 1: Rapid & Fatal Renal failure triggered by Spontaneous bacterial peritonitis = poor pgn
Type 2:slow renal decline see in refractory ascities
Hepatorenal Syndrome tx -4
⬆︎volume to kidneys
1st: Stop Diuretics (Spironolactone, Lasix)
2nd: IV Albumin
3rd: Alternative: Add Octreotide to vasoconstrict splanchnics
4th: Liver transplant
What are the 2 most common causes of Chronic Kidney Disease
DM and HTN
Why is a Lipid Panel ordered in CKD pts?
Prevent Cardio dz by controlling lipids since CV dz is most common cause of Death in CKD pts
Because of this, also order EKG
What is the significance of Proteinuria in CKD -2
- Protein filtration worsens Kidney dz
- Proteinuria is an indicator of early heart dz in CKD pts
Why is it important to prevent Hyperphosphatemia in CKD pts
Elevated Phosphate 2/2 CKD –> ⬆︎ PTH release (2° HyperParathyroid) –> [Renal Osteodystrophy] and Mortality
List causes of Hypertonic hypOnatremia -3
Too much OSMOTICALLY ACTIVE substances in extracellular fluid
- ⬆︎ Glucose
- ⬆︎ Glycerol
- Mannitol
Wilms tumor etx
proliferation of metanephric blastema –>
HAWF (Hematuria painless/HTN, Abd mass, Wt loss, Fever, Flank Pain)
What are the renal complications of sickle cell TRAIT - 5
- Painless Hematuria 2/2 papillary necrosis
- Inability to concentrate urine (due to vasa recta damage)
- Distal Renal Tubular Acidosis
- UTI
- Renal Medullary CA
Sickle cell trait is a benign condition with Hgb AS that can cause fleeting papillary necrosis
UA for Acute Tubular Necrosis - 3
- Granular cast
- Hematuria
- Tubular epithelial cells
UA for Acute interstitial nephritis
MANY Eosinophilic WBC Cast!
UA for Acute Glomerulonephritis
- RBC cast with dysmorphic RBCs
- Proteinuria
These pts will also have HTN
What is the earliest renal abnormality in pts diagnosed with DM?
Glomerular Hyperfiltration
- this is also the major pathophys mechanism for gluemrular injury in DM. Hint the reason ACE inhibitors help*
- Glomerular Hyperfiltration–>Basement membrane thickening –>mesangial expansion –> Kimmelsteil Wilson nodular sclerosis*
⬆︎ urine microalbumin:creatinine is the earliest sign of NEPHROPATHY
What are the 5 different types of renal stones
- Ca+ stones (oxalate or phosphate)
- Uric acid radiolucent stone
- Xanthine radiolucent stone
- Ammonium Mg phosphate struvite
- Cystine hexagonal stones - inherited