Guillian Barre syndrome scores
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Guillain Barre syndrome clinical scores EGRIS IGOS disability scale 2024
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I now have comprehensive data from authoritative textbooks and guidelines. Here is a complete summary of all scoring systems used in Guillain-Barré Syndrome.
Guillain-Barré Syndrome (GBS) - Clinical Scoring Systems
1. Hughes Disability Scale (GBS Disability Score)
The most widely used scale for assessing functional status in GBS. Originally described by Hughes et al. (1978); the van Koningsveld 2007 adaptation is now standard.
| Score | Description |
|---|---|
| 0 | Healthy state |
| 1 | Minor symptoms; able to run |
| 2 | Able to walk 10 m without assistance; unable to run |
| 3 | Able to walk 10 m with help (across open space) |
| 4 | Bedridden or chairbound |
| 5 | Requires assisted ventilation for at least part of the day |
| 6 | Death |
Used in treatment trials, admission assessment, and as an input variable in EGOS scoring.
2. MRC Sum Score (Medical Research Council Sum Score)
A muscle strength score totaling the MRC grade (0-5) across 6 paired muscle groups bilaterally:
- Shoulder abduction
- Elbow flexion
- Wrist extension
- Hip flexion
- Knee extension
- Ankle dorsiflexion
Total range: 0-60 (higher = stronger; 60 = normal strength)
Used as a core input in both EGRIS and mEGOS. Nadir MRC values help define severity and guide ICU monitoring.
3. EGRIS - Erasmus GBS Respiratory Insufficiency Score
Purpose: Predicts probability of requiring mechanical ventilation within 1 week of hospital admission.
| Measure | Category | Score |
|---|---|---|
| Days from onset of weakness to hospitalization | >7 days | 0 |
| 4-7 days | 1 | |
| ≤3 days | 2 | |
| Facial and/or bulbar weakness at admission | Absent | 0 |
| Present | 1 | |
| MRC sum score at admission | 60-51 | 0 |
| 50-41 | 1 | |
| 40-31 | 2 | |
| 30-21 | 3 | |
| ≤20 | 4 |
Total score: 0-7
| EGRIS | Risk of intubation |
|---|---|
| 0-2 (Low) | ~4% |
| 3-4 (Intermediate) | ~24% |
| 5-7 (High) | ~65% |
Source: Fishman's Pulmonary Diseases, p. 1506; validated in 397 patients from an RCT and the IGOS cohort of 1,023 patients. Online calculator: gbstools.erasmusmc.nl
4. mEGRIS - Modified EGRIS
An updated version that can predict respiratory failure at any point during the first 2 months from disease onset (not just the first week). Higher risk is indicated by:
- Rapid disease progression in the first 4 weeks
- Bulbar palsy
- Neck flexion weakness
- Hip flexion weakness
Patients with mEGRIS ≥3 should be closely monitored with low threshold for ICU admission.
5. EGOS - Erasmus GBS Outcome Score
Purpose: Predicts inability to walk independently at 6 months. Performed at 14 days after admission.
Three variables:
- Age at onset (categorized)
- Preceding diarrhea (yes/no - marker for C. jejuni, axonal damage, poor prognosis)
- GBS Disability Score at 14 days (Hughes scale)
Total score: 1-7
Developed and validated in 374 patients from two RCTs and a pilot study; further validated in 379 patients from another RCT.
6. mEGOS - Modified EGOS
An updated version of EGOS that:
- Uses MRC sum score instead of the GBS disability score (more granular)
- Can be applied earlier - at 1 week of admission (vs. 14 days for EGOS)
- Still uses age at onset and preceding diarrhea
Rosen's Emergency Medicine: "A modified EGOS (mEGOS) utilizes MRC score instead of the GBS disability score and can be used earlier, at one week of admission."
7. ODSS / ONLS - Overall Disability Sum Score / Overall Neuropathy Limitation Scale
- ODSS: Assesses upper and lower limb function limitations; designed for immune-mediated peripheral neuropathies (GBS, CIDP, paraprotein-associated neuropathy). Checklist-based interview.
- ONLS (Overall Neuropathy Limitation Scale): A modification of ODSS that adds stair-climbing and running to reduce ceiling effects.
Both are used for long-term follow-up and outcome assessment in trials.
8. Criteria for Intubation (20-30 Rule / "20-30-40" Rule)
Not a score per se, but standard clinical thresholds for respiratory monitoring:
| Parameter | Threshold for Intubation |
|---|---|
| Forced Vital Capacity (FVC) | <15-20 mL/kg |
| Negative Inspiratory Force (NIF) | <-30 cm H₂O |
| PaCO₂ (major criterion) | ≥48 mmHg |
| PaO₂ (major criterion) | ≤56 mmHg |
| Ineffective cough, impaired swallowing, atelectasis | Minor criteria (2 = intubate) |
Intubation is indicated when 1 major or 2 minor criteria are present. Fishman's Pulmonary, p. 1506.
Summary Table: Score by Clinical Purpose
| Score | When Used | What It Predicts |
|---|---|---|
| Hughes / GBS Disability | Admission, serial | Functional disability (0-6) |
| MRC Sum Score | Admission, serial, nadir | Muscle strength (0-60) |
| EGRIS | Admission | MV within 1 week (low/intermediate/high) |
| mEGRIS | Any point in first 2 months | MV risk - broader window |
| EGOS | Day 14 | Unable to walk at 6 months |
| mEGOS | Day 7 | Unable to walk at 6 months (earlier) |
| ODSS / ONLS | Follow-up | Long-term functional limitation |
Key clinical pearls:
- Patients with EGRIS ≥5 have ~65% chance of needing mechanical ventilation - admit to ICU
- Preceding diarrhea (proxy for C. jejuni) is a consistent poor prognostic marker in both EGOS and mEGOS
- Rapid onset (≤3 days to hospitalization) is the highest-risk EGRIS time category
- The International GBS Outcome Study (IGOS) online tools calculate both mEGRIS and mEGOS automatically
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