66 results
Drugs affecting the cardiac action potential. The sharp rise in voltage ("0") corresponds to the influx
to the sodium-channel ... voltage-sensitive calcium channels ... #Pathophys #Pharmacology ... Antiarrhythmics #Classes ... #Effect #ActionPotentials
Brugada syndrome with non-sustained VT; sodium channel blocking drugs (e.g. amio, procainamide) can be dangerous here!

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Brugada syndrome ... non-sustained VT; sodium channel ... amalmattu #Brugada #syndrome ... #Electrocardiogram
Hypercalcemia - EKG Findings
Causes of Hypercalcemia 
• Malignancy 
• Milk-alkali syndrome 
• Vitamin D toxicity 
•
EKG Findings Causes ... • Milk-alkali syndrome ... Hypercalcemia #EKG #ECG #Electrocardiogram ... #Differential #Causes
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... Depolarization: • Na+ channels ... Phase • Ca++ channels ... Antiarrhythmics #Pharmacology ... Classification #Classes
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
CLASS 1 - Sodium Channel ... Block fast Na+ channels ... 3 - Potassium Channel ... Vaughan #Williams #Pharmacology ... Classification #Classes
Selective Serotonin Reuptake Inhibitors: Mechanisms and Side Effects
 • Serotonin Syndrome:
   - Autonomic Hyperactivity:
• Serotonin Syndrome ... - Cognitive Changes ... SSRI Withdrawal Syndrome ... Dizziness - Nausea ... Pathophysiology #Pharmacology
Serotonin-Norepinephrine Reuptake Inhibitors(SNRIs): Mechanisms and Side Effects

Withdrawal: Dizziness, Diarrhea, Insomnia, Nausea, Vomiting
Serotonin Syndrome - Potentially Life
Diarrhea, Insomnia, Nausea ... Vomiting Serotonin Syndrome ... - Cognitive Changes ... gain Incr NE: Nausea ... Pathophysiology #Pharmacology
Alice in Wonderland Syndrome
What? Metamorphophsia - Distortions of the visual perceptions with changes in size (micro
in Wonderland Syndrome ... perceptions with changes ... (Many causes!) ... * (most common cause ... Alice #Wonderland #Syndrome
Common sodium channel blockers which cause QRS widening.

Anticonvulsants: 
 - Carbamazepine 
Antidysrhythmics:  
 - Group
Common sodium channel ... blockers which cause ... widening #ECG #EKG #Pharmacology ... Differential #Drugs #Classes
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Diagnosis Algorithm Syndrome ... • Nephrotic syndrome ... /CRF Hormonal changes ... Diagnosis #Algorithm #Causes