ECG qtc table diagnosis causes nephrology classification pharmacology hyperkalemia low changes

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Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
- At

Hyperkalemia shortens ... prolonged PR and QT ... #Diagnosis #Hyperkalemia ... #EKG #ECG #Changes ... #Progression #Table

Hypokalemia - Differential Diagnosis
Poor Intake
- Starvation
- Anorexia
GI Losses
- Vomiting / NG

Hypokalemia - Differential ... Diagnosis Poor ... #Low #Potassium ... #Table #Classification ... #Causes

Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake
- Poor dietary intake (particularly common in alcoholics)

- Hypokalemia ... #Differential #Diagnosis ... #Low #Magnesium ... #Table #Classification ... #Causes #Workup

Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
• Slows depolarization

Vaughan Williams Classification ... potential • Prolongs QT ... VaughanWilliams #Classification ... #Classes #cardiology ... #pharmacology

Classification of Diabetes Insipidus

Central or neurogenic diabetes insipidus:
- Congenital - Structural malformations affecting the hypothalamus

Classification of ... uropathy, Metabolic causes ... (e.g., hypokalemia ... #Types #Nephrology ... #Diagnosis #Differential

Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
• MOA: Block fast Na+ channels

Vaughan Williams Classification ... Duration) - ↑ QT ... Vaughan #Williams #Pharmacology ... #Classification ... #Classes #pathophysiology

Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia:
• Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,

Reflex Testing - Causes ... Hyporeflexia: • Hypercalcemia ... polyneuropathy (e.g ... #differential #diagnosis ... #table #neurology

Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
• Na+ channels open leading to a

Antiarrhythmics Pharmacology ... Vaughan Williams Classification ... Duration) - ↑ QT ... Antiarrhythmics #Pharmacology ... #Classification

Causes of Hyperkalemia - Reduced Excretion - Differential Diagnosis Algorithm

Reduced flow through distal nephron - TTKG

Causes of Hyperkalemia ... - Differential Diagnosis ... EABV (e.g., CHF ... IntercellularShift #Nephrology ... #Algorithm #Causes

Glomerular Diseases - Nephritic and Nephrotic Syndromes

Nephritic syndrome—due to GBM disruption.
Hypertension. t BUN and creatinine.

disruption —+ charge ... May be 10 (eg direct ... Nephrotic #Syndromes #Classification ... #Proteinuria #Nephrology ... #Diagnosis

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