17 results
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Algorithm UOsm ... EABV) - Consider: Hypovolemia ... , Heart failure, ... Primary polydipsia, Low ... #causes #nephrology
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Algorithm Hypertonic ... ON (UNa < 30): Hypovolemia ... , Heart failure, ... Primary polydipsia, Low ... #sodium #nephrology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Once pseudohypokalemia is ruled out, causes of hypokalemia can be
Differential Diagnosis Algorithm ... discrete buckets: 1. ... filling of bucket (low ... transcellular shift) 3. ... Causes #workup #nephrology
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... Diagnosis Algorithm ... water retention 1) ... Urine Osmolarity 3) ... #nephrology #sodium
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Diagnosis Workup Algorithm ... 1) Check Urine ... • Euvolemic (Low ... insipidus (central or nephrogenic ... #nephrology #sodium
Hypokalemia Diagnostic Algorithm
To assess potassium excretion: perform 24-hour urine collection or alternatively obtain potassium-to-creatinine ratio on
Hypokalemia Diagnostic ... Algorithm To assess ... TTKG should be <3; ... #Algorithm #TTKG ... #nephrology #low
Heat Illnesses and Heat Stroke - Differential Diagnosis Framework

Heat Cramps:
 • Muscle pain or spasm -
Loss of sodium/Potassium ... conditions - Neurogenic ... illness → Hypernatremia ... Multi-system illness: 1. ... , ARDS, DIC) 3.
Rhabdomyolysis - Differential Diagnosis Framework and Management Summary

Causes of Rhabdomyolysis:
 • Trauma:
	- Immobilization
	- Crush injury
	- Compartment
Hyperuricemia • Hyponatremia ... obstruction 3. ... output: 200 ml/hr 3. ... Monitor potassium ... causes #treatment #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... +K / serum Na >1 ... can be high or low ... Present (Uosm ≥100): Hypovolemia ... renal perfusion (Heart
Causes of Hypokalemia
I. Decreased intake
   A. Starvation
   B. Clay ingestion
II. Redistribution into
Causes of Hypokalemia ... post-myocardial infarction, head ... Increased secretion of potassium ... Differential #Diagnosis #Low ... #Potassium #Classification