55 results
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... Differential Diagnosis Algorithm ... starts by measuring urinary ... Clinicians should also look ... Post-hypercapnia • Diuretics
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Diagnosis Algorithm ... secreting tumor, Primary ... • HTN Absent: Loop ... and thiazide diuretics ... #causes #potassium
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
inhibitors - Primary ... Medications - Loop ... - Hypokalemia ... Differential #Diagnosis #Low ... Classification #Causes
Causes of Hypokalemia
Transcellular Shifts:
 - Alkalosis, Increased plasma insulin (treatment of diabetic ketoacidosis), ß-Adrenergic agonists, Hypokalemic
Causes of Hypokalemia ... anhydrase inhibitors, loop ... syndrome (mimics loop ... or induced) #Hypokalemia ... #Causes #differential
Increased Urination - Differential Diagnosis Framework - Increased Volume / Frequency
 • Increased osmotic load (Increased
urine (usually low ... kidney disease, Loop ... phase of ATN, Hypercalcemia ... Increased intake (low ... /Inflammation: Urinary
Metabolic Alkalosis - Differential Diagnosis Algorithm - Urinary Chloride
 • Cl- responsive metabolic alkalosis
Differential Diagnosis Algorithm ... - Urinary Chloride ... Remote use of loop ... - Normal/low ... #causes #urinary
The Diagnostic Approach to Hyperkalemia
Drugs
 - Amiloride
 - Spironolactone
 - Triamterene
 - Trimethoprim
 - Pentamidine
 -
Diagnostic Approach to Hyperkalemia ... inhibitors Other causes ... Ketoconazole Low ... #Algorithm #diagnosis ... #differential #causes
Hyperkalemia Treatment Options
Stabilize cardiac membrane:
 • IV Calcium (peaks 5-10 minutes)
Decrease potassium concentration:
 • IV Fluids
Shift
Hyperkalemia Treatment ... 90 minutes) • Sodium ... excretion: • Urinary ... renal function) - Loop ... diuretic (often
Diuretics - Pharmacology

Thiazides diuretics:
 • Inhibit Na+ Cl- cotransporter in distal tubule
 • Chlorothiazide, Chlorthalidone, Indapamide,
Metolazone Loop ... as no effect on sodium ... Pharmacology #nephrology #conversion ... #loop #thiazide ... #classes
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Causes of Hypomagnesemia ... Differential Diagnosis Algorithm ... Urine Mg > 10g • Loop ... DiureticsHypercalcemia-PTH ... Hypomagnesemia #Magnesium #Low