GBS & MS

Guillain-Barré Syndrome (GBS) and Multiple Sclerosis (MS) are autoimmune disorders where the myelin sheath, responsible for fast nerve impulse transmission, is damaged. This damage slows down impulses, potentially leading to paralysis. Myelin is formed by Schwann cells in the Peripheral Nervous System (PNS) and oligodendrocytes in the Central Nervous System (CNS). GBS affects Schwann cells and the PNS, while MS affects oligodendrocytes and the CNS.

GBS is characterized by ascending paralysis, meaning the paralysis progresses upwards from the lower extremities. Diagnosis involves analyzing cerebrospinal fluid (CSF), which shows increased protein levels due to antibodies, but normal white blood cell counts. Triggering factors, often bacterial or viral infections (like Campylobacter jejuni or COVID-19), occur about six weeks prior, initiating an autoimmune response that damages myelin in the PNS.

Slower impulses in the PNS affect cranial nerves, spinal nerves, and the autonomic nervous system. Cranial nerve IX (glossopharyngeal) involvement leads to dysphagia, requiring thick fluids and neck flexion during swallowing. Spinal nerve damage causes paresthesia (sensory) and ascending flaccid paralysis or hyporeflexia (motor). Autonomic dysfunction impacts heart rate (cardiac dysrhythmias), blood pressure (hypotension/hypertension), peristalsis (constipation), and bladder function (neurogenic bladder, incontinence, dribbling urine), often necessitating an indwelling catheter with infection precautions. Complications include aspiration, breathing problems (pneumonia, atelectasis, respiratory arrest due to diaphragm paralysis), cardiac arrest, and deep vein thrombosis. GBS is usually not permanent, with recovery occurring in 6 months to 2 years, often in a descending pattern.

MS involves slower impulse transmission in the CNS. MRI scans reveal multiple plaques or scarring in the brain. Risk factors include women aged 20-40 years. MS is a lifetime disorder that can lead to depression. Both GBS and MS, being autoimmune, are managed with immunosuppressants like azathioprine, steroids (prednisone), and adalimumab, which reduce antibody production. Close monitoring for infection is crucial due to immunosuppression. MS has periods of remission (free of symptoms) and exacerbation (triggered symptoms), with infection and stress being common triggers. Muscle relaxants like baclofen, dantrolene, and carisoprodol are also prescribed.

MS symptoms affect the brain (CNS) and spinal cord. Cranial nerve II (optic nerve) damage leads to visual disturbances (diplopia, scotoma/blind spots). Cranial nerve IX can cause dysphagia. Cerebellar involvement results in ataxia (lack of coordination), managed by walking with feet wide apart. Charcot's triad—scanning speech, intentional tremors, and nystagmus—is characteristic. Spinal cord issues include numbness (sensory) and bowel/bladder dysfunction, such as constipation (managed with increased fiber and fluids) and neurogenic bladder (managed with catheterization and infection watchouts). Nursing management focuses on avoiding stress and maintaining a stable temperature, as cold can increase spasticity and warmth can worsen fatigue/muscle weakness. MS is chronic, progressive, and irreversible, requiring palliative and supportive care.

MS is characterized by descending paralysis affecting the CNS, while GBS features ascending paralysis affecting the PNS. MS is a chronic, progressive, and irreversible condition with no cure, requiring palliative care. GBS, on the other hand, is generally treatable and reversible. Both conditions require immunosuppressants. For GBS, additional treatments include intravenous immunoglobulins (IVIG) and plasmapheresis, aimed at counteracting the autoimmune attack. IVIG introduces good antibodies to alleviate the autoimmune response.