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Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
Mydriasis and Miosis ... • Unilateral Miosis ... syndrome, Posterior Synechiae ... • Bilateral Miosis ... #Mydriasis #Miosis
Horner's Syndrome
 • Anhidrosis: Diminished sweating of ipsilateral face and neck
 • Miosis: Loss of sympathetic
face and neck • Miosis ... impaired dilation) • Ptosis ... Müller's muscle - Ptosis
Miosis Causes - 4 P's Mnemonic
Constricted: pupils < 2mm, Pinpoint: pupils < 1mm
 • Pain Killer:
Miosis Causes - ... Pilocarpine: Eye drops #Miosis
Myasthenia Gravis - Ptosis, Diplopia, Blurred Vision

Acute Myasthenic Crisis 
• Triggered by infection, medication 
• Respiratory
Myasthenia Gravis - Ptosis ... Gravis #Diagnosis #Pathophysiology
Spermatogenesis
 - Timing and location Begins at puberty with spermatogonia. Full development takes 2 months. Occurs
Undergoes meiosis ... Undergoes meiosis ... #Pathophysiology
SIGNS OF CHOLINERGIC CRISIS: DUMBELLS
-Diarrhea
-Urination
-Miosis
-Bradycardia
-Bronchospasm
-Emesis
-Lacrimation
-Lethargy
-Salivation

#Diagnosis #Toxicology #Muscarinic #Cholinergic #Toxidrome #Poisoning #DUMBELLS #DUMBBELLS #Mnemonic
Diarrhea -Urination -Miosis
Cardiac Myocyte Contractile cycle
 - Ca2+ binds to TnC → TnI is inhibited → conformational change
between actin and myosin ... - Myosin heads ... boat, to “row” myosin ... itself, allowing myosin ... #Pathophysiology
All About Horner's Syndrome

Horner's syndrome, known as 
"oculosympathetic paresis" by people 
who don't have friends, is
classically results in ptosis ... droop eyelid), miosis
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Ptosis - Differential ... Diagnosis Framework Ptosis ... associated with ptosis ... Neurogenic Ptosis ... Congenital Ptosis
Diabetes Pathophysiology and Medication Targets

The ominous octet is one concept that summarizes the different pathophysiologic pathways
Diabetes Pathophysiology ... the different pathophysiologic ... #Diabetes #Pathophysiology