61 results
Causes of Hypokalemia
Transcellular Shifts:
 - Alkalosis, Increased plasma insulin (treatment of diabetic ketoacidosis), ß-Adrenergic agonists, Hypokalemic
diuretics, and ... thiazide-like diuretics ... Postobstructive diuresis ... diuretic use), ... #Causes #differential
Diuretics - Pharmacology

Thiazides diuretics:
 • Inhibit Na+ Cl- cotransporter in distal tubule
 • Chlorothiazide, Chlorthalidone, Indapamide,
Diuretics - Pharmacology ... Thiazides diuretics ... diuretics: • ... Piretanide Potassium ... Pharmacology #nephrology #conversion
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Syndrome • HTN, High ... • HTN Absent: Loop ... and thiazide diuretics ... #causes #potassium
Diuresis in Critical Care - Achieving a Negative Fluid Balance
Advantages Of A Negative Fluid Balance:
 •
Diuresis in Critical ... • Start with LOOP ... DIURETICS which ... , address diuretic ... ) to normalize Potassium
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
with hypokalemia ... Urine Cl - Loop ... diuretics, Thiazide ... diuretics, Mg2+ ... #differential #
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Medications - Loop ... and thiazide diuretics ... - Osmotic diuresis ... Post-obstructive diuresis ... Hypomagnesemia #Differential
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
- Differential ... Diagnosis Algorithm ... Clinicians should also look ... Post-hypercapnia • Diuretics ... causes #nephrology #potassium
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Hypokalemia Differential ... Diagnosis Algorithm ... >20 mEq/24 h - Diuretics ... #Differential # ... #causes #low #potassium
Hyperkalemia Treatment Options
Stabilize cardiac membrane:
 • IV Calcium (peaks 5-10 minutes)
Decrease potassium concentration:
 • IV Fluids
Shift
Hyperkalemia Treatment ... Fluids Shift potassium ... renal function) - Loop ... diuretic (often ... LouLectures #Hyperkalemia
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
Hyperkalemia: Diagnostic ... algorithm Decreased ... • Drugs • Diabetic ... Normal, Renin High ... #differential