4cb08cae-c10f-4727-95c2-55fe38988f9b.jpg
What is that diagram showing
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"Guillain-Barre Syndrome"[MeSH Terms] AND "plasma exchange"
It isn't a diagram. It's a handwritten clinical history note, and the case it describes looks like Guillain-Barré syndrome (GBS). The automated image reader failed, so I read the handwriting myself. A few words are hard to make out.
What the note says
History: A 45-year-old man was brought to casualty by relatives with:
- weakness of both lower limbs
- weakness of the distal parts of both upper limbs
- symptoms for 3 days
He was first taken to a private hospital, where CSF studies showed albuminocytological dissociation. He was also found to have newly detected diabetes mellitus.
Examination: Vitals were within normal limits. The small grids are the neurological findings:
| Finding | What the grid shows |
|---|---|
| Power | Roughly 3/5 in the top row (probably upper limbs) and 1/5 in the bottom row (probably lower limbs), the same on both sides. This is hard to read. |
| Tone | Normal in the top row, reduced (↓) in the bottom row. |
| Reflexes | "Mute" in all four limbs, meaning absent or unelicitable. |
| Plantar | "Mute" on both sides. |
MRI of the lumbosacral spine (done outside, dated 8/10):
- Disc protrusion at L3-L4.
- A disc-osteophyte complex compressing the existing left L4 nerve root.
Treatment: Plasma exchange was started, and the note says "prophylactically". The patient has had 4 cycles so far.
Why this fits GBS
- Acute, rapidly progressive, symmetric limb weakness.
- Areflexia in all four limbs.
- CSF with high protein and a normal cell count (albuminocytological dissociation).
- Treatment with plasma exchange.
The MRI finding is probably a coincidence. A single compressed L4 root would not cause symmetric weakness of all four limbs with absent reflexes. This is the likely reason the note describes the compression as "existing".
The newly detected diabetes is also worth keeping in mind. It can add its own neuropathy and affects glucose control during illness.
Plasma exchange in GBS
- Textbooks describe plasma exchange as standard treatment for GBS. In the multicenter trial described in Fishman's Pulmonary Diseases and Disorders (Guillain-Barré Syndrome section), 4 treatments, using albumin or fresh frozen plasma as replacement fluid, gave earlier motor recovery, earlier walking and fewer patients needing ventilation.
- The French Cooperative Group data in Brenner and Rector's The Kidney (Guillain-Barré Syndrome section) support 2 sessions for mild disability and 4 sessions for more severe disease. Four cycles therefore fits a patient who is significantly weak.
I also ran a quick PubMed check for recent systematic reviews and found nothing that changes this. The recent reviews are on rehabilitation and on newer agents such as efgartigimod (PMID 42847734).
I can't confirm the diagnosis from the note alone. If you want a specific part explained, such as the power grid, the differential diagnosis, or monitoring during plasma exchange, tell me which.
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