17 results
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Diagnosis Algorithm ... Low intake ... Transcellular shift ... #Differential #Diagnosis ... #Algorithm #Causes
Causes of Hypokalemia - Differential Diagnosis Algorithm
Once pseudohypokalemia is ruled out, causes of hypokalemia can be
Causes of Hypokalemia ... filling of bucket (low ... (transcellular shift ... #Algorithm #Causes ... #workup #nephrology
Adrenal Insufficiency Differential Diagnosis Algorithm
Clinical suspicion: Weakness, fatigue, nausea, musculoskeletal pain, dizziness, volume depletion, abdominal pain,
Algorithm Clinical ... Weakness, fatigue, nausea ... , hypotension, hyponatremia ... , hyperkalemia, ... ACTH) stimulation test
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Hyponatremia Diagnosis ... EABV) - Consider: Hypovolemia ... Primary polydipsia, Low ... solute intake, Renal ... #algorithm #causes
Hypokalemia Differential Algorithm
Acidosis
 - RTA
 - Diarrhea
pH Normal 
 1. Decreased Mg 
 2. Intracellular Shift
Algorithm Acidosis ... Intracellular Shift ... Renal artery stenosis ... #Diagnosis #Causes ... #Workup #Nephrology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Causes of Hypokalemia ... Algorithm Decreased ... Transcellular shift ... aldosterone • Renal ... #Algorithm #Causes
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Algorithm Isotonic ... : • Hypovolemia ... MH/CCF/CWRU EM ... #diagnosis #causes ... nephrology #sodium #low
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... normal volume-based algorithm ... Hypothyroidism, Adrenal ... Present (Uosm ≥100): Hypovolemia ... #differential #diagnosis
Adrenal Insufficiency - Diagnosis and Management Summary
Primary Adrenal Insufficiency:
Most Common Cause in the US: Autoimmune Adrenalitis
Other
secondary AI, hyponatremia ... Hyperkalemia is ... Hyperpigmentation is absent (low ... A STIM test can ... ACTH STIM TEST:
Rhabdomyolysis - Differential Diagnosis Framework and Management Summary

Causes of Rhabdomyolysis:
 • Trauma:
	- Immobilization
	- Crush injury
	- Compartment
- Differential Diagnosis ... Management Summary Causes ... Hyperuricemia • Hyponatremia ... Shift of extracellular ... #Management #causes