Nephro & Electrolytes Flashcards
1
Q
What are the pre-renal causes of AKI?
A
- Hypovolemia
- Decreased CO
- Reno-vascular diseases
- Systemic vasodilation (sepsis)
- Cirrhosis (hepato-renal syndrome)
2
Q
What are the causes of renal AKI?
A
- TUBULAR: Acute tubular necrosis, Contrast nephropathy, Aminoglycoside toxicity
- GLOMERULAR: RPGN, post-infectious glomerulonephritis, TTP, Hemolytic-Uremic syndrome (HUS)
- INTERSTITIAL: NSAIDS, infiltrative
3
Q
What are the post-renal causes of AKI?
A
- BPH
- Nephroliathiasis
- Neoplasm
- Retroperitoneal fibrosis
4
Q
What are the indications of acute dialysis?
A
- Acidemia
- Electrolyte imbalance (hyperkalemia)
- Intoxication (NSAID overdose)
- O (volume overload, like severe CHF)
- U (uremia, uremic symptoms)
5
Q
What are the causes of chronic kidney disease?
A
- Diabetes (30%)
- Hypertension (25%)
- Chronic glomerulonephritis (15%)
- Interstitial nephritis, polycystic kidney disease, obstructive uropathy
- Any cause of AKI may lead to CKD if prolonged or if treatment delayed.
6
Q
What are the intrarenal causes of hematuria?
A
- Tumor
- Infection
- Stones
- Trauma
- Glomerular disease (IgA nephropathy)
- Too much exercise
- Polycystic kidney disease
7
Q
What are the extrarenal causes of hematuria?
A
- Tumor
- Trauma
- Stricture
- Systemic diseases (SLE, RA, GPA, HUS, Goodpasture)
- Bleeding disorder
- Medication
8
Q
What are the causes of an anion-gap metaolic acidosis?
A
- Starvation ketoacidosis
- Alcoholic ketoacidosis
- Diabetic ketoacidosis
- Paracetamol
- Increased urea
- Lactic acidosis (starvation, hypovolemia)
- Ethanol, methanol
- Salicylates
9
Q
What are the causes of non anion gap metabolic acidosis?
A
- GI loss: Diarrhea
- Renal loss
10
Q
What are the causes of metabolic alkalosis?
A
- Vomitting
- Diuretics
- Villous adenoma of colon
- Adrenal disorders
- K deficiency
- Cushing
11
Q
What are the causes of respiratory acidosis?
A
- COPD
- Airway obstruction
- NMD
- Brainstem injury
- Drugs: narcotics
- Respiratory muscle fatigue
12
Q
What are the causes of respiratory alkalosis?
A
- Anxiety
- P/E
- Pneumonia
- Asthma
- Sepsis
- Hypoxia (can lead to increased RR)
- Mechanical ventilation
- Pregnancy (increased serum progesterone can causer hyperV)
- Liver disease (cirrhosis)
- Medication (salicylate toxicity)
- Hyperventilation syndrome
13
Q
What are the causes of hypercalcemia?
A
- Hyperparathyroidism
- Renal failure
- Paget disease
- Malignancies
- Vitamin D intoxication
- Thiazide diuretics
- Lithium
- Sarcoidosis
14
Q
How does hypercalcemia present?
A
- Stones (chronic hypercalciuria)
- Bones (aches, pain, osteitis fibrosa cystica)
- Grunts and groans (muscle pain, weakness, pancreatitis, PUD, gout, constipation)
- Psychiatric overtones (depression, fatigue, anorexia, sleep disturbance, anxiety, lethargy)
15
Q
What are the causes of hypocalcemia?
A
- Hypoparathyroidism
- Renal insufficiency: less vitamin D production
- Vitamin D deficiency
- Hyperphosphatemia: calcium phosphate deposition
- Hypomagnesemia
- Acute pancreatitis: calcium deposits
- Blood transfusion w/ citrated blood (calcium binds to citrate)
- Osteoblastic metastases (bones)
- DiGeorge syndrome (chromosome 22 deletion)