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Sustained Clonus in Serotonin Syndrome

- Dr. David Juurlink @DavidJuurlink

#Clonus #serotonin #syndrome #PhysicalExam #Clinical #Video #Knee #Reflexes
Sustained Clonus ... in Serotonin Syndrome ... DavidJuurlink #Clonus ... #serotonin #syndrome
ECMO Troubleshooting - OnePager Summary
ECMO Emergency Protocol - Team should train/practice & have necessary supplies at
CIRCUIT THROMBOSIS - Clots ... Clots in oxygenator ... POST-CANNULATION SYNDROME ... problems #diagnosis #differential ... #management #criticalcare
Serotonin Syndrome
 - Rapid onset 
 - Combination of 2+ serotonin agonists 
Mental status changes:
Serotonin Syndrome ... abnormalities: - Clonus ... #Serotonin #Syndrome ... #Diagnosis #Management
Clinical Manifestations of Serotonin Syndrome
 • Ophthalmologic: Mydriasis, Ocular clonus (slow horizontal movements)
 • Gastrointestinal: Diarrhea,
Manifestations of Serotonin Syndrome ... Mydriasis, Ocular clonus ... agitated), Tremor, Clonus ... (sustained), Clonus ... ucsdim #Serotonin #Syndrome
Algorithm for the Diagnosis of Serotonin Syndrome
 - Serotonin syndrome is thought to be caused by
- Serotonin syndrome ... hyperreflexia, inducible clonus ... myoclonus, ocular clonus ... , spontaneous clonus ... Hyperreflexia, clonus
Selective Serotonin Reuptake Inhibitors: Mechanisms and Side Effects
 • Serotonin Syndrome:
   - Autonomic Hyperactivity:
• Serotonin Syndrome ... Abnormalities: Ocular Clonus ... Hyperreflexia, Muscle clonus ... SSRI Withdrawal Syndrome
Serotonin-Norepinephrine Reuptake Inhibitors(SNRIs): Mechanisms and Side Effects

Withdrawal: Dizziness, Diarrhea, Insomnia, Nausea, Vomiting
Serotonin Syndrome - Potentially Life
Vomiting Serotonin Syndrome ... Abnormalities: Ocular Clonus ... Hyperreflexia, Muscle clonus
Causes of Seizures - Differential Diagnosis Algorithm
Unprovoked - Epilepsy:
 • Focal: Simple, Complex
 • Generalized: Absence,
of Seizures - Differential ... Myoclonic, Tonic, Clonic ... Atonic, Tonic-clonic ... vasoconstriction syndrome ... Prophyria #Seizures #Differential
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Skin Ulcers - Differential ... ) • Behcet's syndrome ... Erosive lichen planus ... #dermatology #Differential
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Genital Lesions - Differential ... ) • Reiter's syndrome ... ) • Behcet's syndrome ... Erosive Lichen Planus ... #dermatology #Differential