10 results
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
Urine K+ <13 mEq ... creatinine) • Cell shift ... HCO3- • Low Urine ... #algorithm #diagnosis ... #nephrology
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
A urine K/Cr ratio ... urinary losses: • High ... #Hypokalemia #diagnosis ... #potassium #nephrology ... #low
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
water loss, Serum Sodium ... >145 mmol/L High ... mannitol, glucosuria Low ... Hypernatremia #Nephrology ... #Algorithm #Causes
Salicylate Toxicity - Diagnosis and Management

Consider if:
1) Patient is hot and altered
2) You see tachypnea with
no respiratory cause ... Hearing loss, Dizziness ... Lactate, Low Potassium ... Resuscitation 2) Urine ... 4.5 mmol/L 4) K
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
alkalosis • Normal/low ... the indicated causes ... and potassium acid ... #Algorithm #nephrology ... #differential #diagnosis
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... Urine Na+K / serum ... diuresis can be high ... #differential #diagnosis ... #nephrology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Algorithm Decreased ... isolation) GI loss - Urine ... Transcellular shift ... #Hypokalemia #Nephrology ... #Algorithm #Causes
Lactated Ringers (LR) vs Normal Saline (NS) - Comparison

Composition of LR:
 • Sodium 130 mEq/L
 •
130 mEq/L • Potassium ... trial • Minimal K ... transcellular shift ... densa receives high ... Decreased GFR, urine
Pragmatic diagnostic algorithm for hypokalemia. 
***Typical presentations: 
 • Vomiting: urine Na/Cl > 1.6, low urine
Na/Cl > 1.6, low ... Na/Cl < 0.7, high ... K/creatinine (Cr ... correcting serum potassium ... #nephrology
Causes of Hyperkalemia - Differential Diagnosis Framework
 • Cellular Shift:
   - Exercise
Framework • Cellular Shift ... to Aldosterone: K ... distal tubule sodium ... #Causes #potassium ... #high