Locked-in syndrome revisited

Area of Science:

• Neurology
• Neuroscience
• Rehabilitation Medicine

Background:

• Locked-in syndrome (LiS) presents as quadriplegia with intact consciousness and cognition, distinguished by preserved vertical eye movements.
• Understanding the anatomical basis in the pons, mesencephalon, and thalamus is crucial for differentiating LiS subtypes and related conditions.
• Differential diagnoses include cognitive motor dissociation and akinetic mutism, complicating clinical assessment.

Purpose of the Study:

• To review the subcategorization, etiologies, and anatomical underpinnings of Locked-in syndrome.
• To discuss current treatment strategies, emphasizing early, interdisciplinary, and aggressive rehabilitation.
• To explore the quality of life and ethical considerations for LiS patients, contrasting patient perspectives with those of healthcare professionals.

Main Methods:

• Literature review of LiS subcategorization, etiologies, and neuroanatomical correlates.
• Analysis of treatment options, rehabilitation goals, and communication strategies.
• Examination of quality of life reports and ethical implications, including patient-reported outcomes and professional perceptions.

Main Results:

• LiS is categorized into classical, complete, incomplete, and locked-in plus syndromes based on neuroanatomical damage.
• An early, interdisciplinary approach focusing on communication and psychological support is recommended for rehabilitation.
• A significant disparity exists between LiS patients' high self-reported quality of life and the generally pessimistic views of medical professionals and caregivers.

Conclusions:

• Prioritizing patient autonomy and dignity is essential, challenging negative perceptions of life with LiS.
• Disseminating knowledge, accelerating diagnostics, and promoting technical support are vital for improving care.
• Further research and increased awareness are necessary to ensure a fulfilling life for individuals with LiS.