@doctymart: Locked-in syndrome typically results from a lesion in the ventral pons (commonly a basilar artery stroke, trauma, or central pontine myelinolysis) that disrupts the corticospinal and corticobulbar tracts. This completely interrupts motor output to the body and lower cranial nerves. ​Clinical Findings: Patients lose voluntary control of all skeletal muscles, resulting in quadriplegia and anarthria (inability to speak). However, the reticular activating system and the pathways controlling vertical eye movement and blinking often remain intact. ​Diagnostic Reality: Diagnosis relies heavily on recognizing that cognitive function and consciousness are entirely preserved despite total physical unresponsiveness. Clinicians establish communication by instructing the patient to execute specific vertical eye movements or purposeful blinks in response to simple commands. Infectious Agent: Leptospira, a pathogenic spirochete. ​Transmission: Humans contract the bacteria through contact with water, soil, or damp environments (such as waterlogged basements or areas populated by rodents) contaminated with infected animal urine. The bacteria enter the body via broken skin (cuts, abrasions) or mucous membranes. ​Systemic Manifestations: While classic presentations include acute flu-like symptoms, severe headache, myalgia (especially in the calves), and conjunctival suffusion, severe or atypical systemic dissemination can lead to multi-organ involvement, including hepatic dysfunction (jaundice/liver failure) and renal impairment (Weil's disease). #doctorslife #doctors #medicine #explore #fyp

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Wednesday 12 August 2026 22:04:07 GMT