Dysphagia Knowledge Hub — 吞嚥困難知識庫
Royal Adelaide Prognostic Index for Dysphagia Stroke (RAPIDS)
Overview
The Royal Adelaide Prognostic Index for Dysphagia Stroke (RAPIDS) was developed at the Royal Adelaide Hospital by Broadley et al. to predict which stroke patients with acute dysphagia will have persistent swallowing difficulty at 6 months. Unlike bedside screening tools that measure current swallowing function, RAPIDS is a prognostic instrument — it informs clinical teams and patients about the likely trajectory of recovery.
Understanding prognosis early allows:
- Appropriate rehabilitation intensity planning
- Earlier decision-making about enteral nutrition
- Realistic patient and family counselling
- Resource allocation in stroke units
Background and Validation
Broadley et al. (2003) prospectively followed 121 stroke patients with acute dysphagia to identify predictors of persistent dysphagia at 6 months. Logistic regression identified 5 independent predictors that were combined into the RAPIDS scoring system.
PMID: 12648959
RAPIDS Scoring Variables
| Variable | Score |
|---|---|
| Age ≥70 years | +1 |
| Brainstem or bilateral hemisphere lesion (vs. unilateral) | +1 |
| NIH Stroke Scale (NIHSS) ≥13 | +1 |
| Pre-stroke dysphagia present | +1 |
| Gag reflex absent on admission | +1 |
| Maximum score | 5 |
Interpretation
| RAPIDS Score | Predicted probability of persistent dysphagia at 6 months |
|---|---|
| 0 | ~8% |
| 1 | ~20% |
| 2 | ~40% |
| 3 | ~65% |
| 4 | ~85% |
| 5 | ~97% |
Higher RAPIDS scores warrant earlier enteral nutrition planning, intensive SLT rehabilitation, and more frequent swallowing reassessment.
Clinical Application
Counselling: RAPIDS provides a probabilistic framework for explaining to patients and families that dysphagia recovery is uncertain and variable, but can be quantified to some degree. A score of 4–5 warrants honest discussion about the likelihood of long-term tube feeding.
Rehabilitation planning: Patients with RAPIDS 3+ should be prioritised for intensive dysphagia rehabilitation during the acute phase, as early intervention improves outcomes in neuroplastic recovery.
Enteral nutrition: When RAPIDS ≥3 and dysphagia is severe (e.g., GUSS <10), early insertion of nasogastric tube with a formal plan for PEG assessment at 4 weeks is clinically reasonable.
Limitations:
- RAPIDS was validated in a single centre; external validation is limited.
- The gag reflex item has poor inter-rater reliability and limited predictive value in isolation.
- RAPIDS does not account for dysphagia rehabilitation quality or intensity.
- It does not replace clinical swallowing assessment; it supplements it.
Integration with Other Tools
RAPIDS is most useful when combined with:
- GUSS or WST (current functional swallowing capacity)
- FOIS (baseline and discharge oral intake level)
- MNA-SF (nutritional status)
A stroke patient with RAPIDS 4, GUSS 6, FOIS Level 1, and MNA-SF 6 has a very high probability of requiring long-term enteral nutrition and should be referred for PEG assessment discussion before day 14.
References
- Broadley S, et al. (2003). Predictors of prolonged dysphagia following acute stroke. J Clin Neurosci, 10(3):300–5. PMID: 12748046
- Arnold M, et al. (2016). Dysphagia in acute stroke: incidence, burden and impact on clinical outcome. PLoS ONE, 11(2):e0148424. DOI: 10.1371/journal.pone.0148424
- Martino R, et al. (2005). Dysphagia after stroke: incidence, diagnosis, and pulmonary complications. Stroke, 36(12):2756–63. DOI: 10.1161/01.STR.0000190056.76543.eb