19 results
Causes of Stroke - Ischemic, Hemorrhagic, Subarachnoid - Differential Diagnosis Algorithm
 • Ischemic
 • Intracerebral Hemorrhage
Causes of Stroke ... - Ischemic, Hemorrhagic ... Intracerebral Hemorrhage ... • Subarachnoid Hemorrhage ... #Stroke #CVA
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... PhaseCa++ channels ... Classification: CLASS ... 1C: Strong Blockade ... Antiarrhythmics #Pharmacology
How do you work up an ischemic CVA?
A) Initial Evaluation
 • ABCs
 • IV access, monitor
up an ischemic CVA ... NCCT) head (r/o hemorrhage ... sn/sp) or • CTA ... Ruled out other causes ... #stroke #workup
ACA infarcts are rare because of the collateral circulation provided by the anterior communicating artery. ACA infarct
cerebral artery strokes ... These are uncommon causes ... about 0.3%-4.4% of stroke ... cases in series ... anteriorcerebralartery #cva
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
• ↓ slope of phase ... 1C: Strong Blockade ... • ↓ slope of phase ... ↑ duration of phase ... Vaughan #Williams #Pharmacology
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
MDMA (Ecstacy), TCA ... Hypothermia Causes ... Nicotine, Heat Stroke ... Neuro: Pontine hemorrhage ... , Pontine CVA, Syphilis
Causes of Subarachnoid Hemorrhage - Differential Diagnosis Algorithm
Vessel Disease
 • Aneurysm
 • Vascular Malformation
Other
 • Bleeding
Causes of Subarachnoid ... Hemorrhage - Differential ... #Subarachnoid #Hemorrhage ... #SAH #Stroke #CVA ... Diagnosis #Algorithm #Causes
Causes of Intracerebral Hemorrhage (ICH) - Differential Diagnosis Algorithm
Hypertension:
 • Essential Hypertension (Aneurysm)
 • Drugs (Cocaine,
Causes of Intracerebral ... Hemorrhage (ICH ... diathesis • Hemorrhage ... #ICH #Stroke #CVA ... Diagnosis #Algorithm #Causes
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
association with CTD ... Unknown • 6-7 cases ... zone, GGO, small modular ... strep, HIV • CTD
Digoxin Pharmacology and Pathophysiology
1) Na/K ATPase Pump - Digoxin works by directly binding to and inhibiting
Digoxin Pharmacology ... intracellular calcium causes ... rate (lengthens phase ... 4 and phase O of ... CaitEKulig #Digoxin #Pharmacology