19 results
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
- Differential Diagnosis ... /Chronic renal failure ... - Adrenal insufficiency ... Interpretation #Diagnosis ... #Summary #Nephrology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
Chronic diarrhea ... • Chronic salicylate ... to diarrhea, a high ... urine #Algorithm #nephrology ... #differential #diagnosis
Renal Tubular Acidosis (RTA) 
Type 1 - Failure of secretion
Type 2 - Bicarbonate wasting
Type 4 -
Renal Tubular Acidosis ... Mixed* - Inherited carbonic ... proximal features and high ... classification #nephrology ... #diagnosis
Causes of High-anion Gap and Non-anion Gap Metabolic Acidosis
Causes of High-anion Gap Acidosis:
 • Lactic acidosis
Causes of High-anion ... Renal acidosis ... insufficiency) ... #differential #diagnosis ... #causes #nephrology
Normal Anion-Gap Acidosis (NAGMA) - Differential Diagnosis Framework and Workup

NAGMA
- Chem, ABG or VBG
- Calculate Anion
- Differential Diagnosis ... - Renal insufficiency ... - Diarrhea - High ... Surgical drains - Chronic ... #Workup #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
- Differential Diagnosis ... tubal acidosis ... and metabolic alkalosis ... : • Acute or chronic ... Algorithm #Causes #nephrology
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
- Differential Diagnosis ... Malabsorption, Chronic ... Glucose, Acute resp. alkalosis ... FEPO4 ≥ 5% - Renal ... Workup #phosphate #nephrology
Causes of Metabolic Alkalosis: Differential Diagnosis
ECF volume contracted: urine chloride concentration <20 meq/L
 • Gastric alkalosis:
: Differential Diagnosis ... acute reversal of chronic ... respiratory acidosis ... diuretics after renal ... #Causes #nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
- Differential Diagnosis ... phlebotomy High ... - Metabolic acidosis ... insufficiency/Failure ... #nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
- Differential Diagnosis ... phlebotomy High ... - Metabolic acidosis ... insufficiency/Failure ... #nephrology