Define Spasticity. 5 Marks ππ EXAM
Lance in 1980
Define rigidity, list the types.ππ EXAM
Rigidity
Resistance to passive movement that is not velocity dependent
Types
Co-contraction. Why patient develop co-contractions in stroke? π
For i.e. Knee Extension
Voluntary muscles are excited (quadriceps) while antagonist (hamstrings) are inhibited.
But after stroke, during voluntary agonist effort, abnormal antagonist contraction occurs.
Motor units are not appropriately recruited during recovery, yielding the simultaneous co- contraction of agonist and antagonist muscles.
Stroke Rehabilitation Clinician Handbook 2020 Model 4 pg49
List 5 Major causes of spasticity
Just asking about UMN syndromes:
List 6 Triggers of spasticity. ππ
Scenario: SCI/Stroke patient c/o exaggerated spasticity in legs after he came from home
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6788672/pdf/0650697.pdf
List 4 Benefits of Spasticity ππ
Cuccurollo 4th Edition Chapter 12 Spasticity pg856
List 6 Complications of Spasticity ππ
Cuccurollo 4th Edition Chapter 12 Spasticity
60-year-old male patient with h/o CVA (left hemiparesis) 3 weeks ago
Clinically, the left lower limb tone is increased with increase in ankle and knee tendon reflex (+3) with flexor synergy.
What is the Brunnstrom stage of the left lower limb? ππ
Stage 2
Spasticity appears, and weak basic flexor and extensor synergies are present.
PM&R, Board Review, Chapter- Stroke, page 26
Modified Ashworth Scale ππ
Brunnstrom stages of motor recovery ππ EXAM
1- Flaccidity (immediately after the onset)
No βvoluntaryβ movements on the affected side can be initiated.
2- Spasticity appears
Basic synergy patterns appear
Minimal voluntary movements may be present.
3- Spasticity is prominent
Voluntary control with synergies.
4- Decrease in spasticity
Voluntary control outside the flexor and extensor synergies.
5- Further decrease in spasticity
Selective muscle activation independently from synergies.
6- Disappearance or minimal spasticity
Isolated movements are performed in a smooth, phasic, well-coordinated manner.
Braddom 5th ed Chapter 23 Spasticity
Cuccurollo 4th Edition Chapter 1 Stroke pg28
DeLisa 5th Edition Chapter 23 Stroke Rehabilitation pg565 Table 23.9
Three features found in spastic hemiplegic limb π Dr. Salem
π‘ From itβs name spastic-hemiplegia
1- Muscle overactivity (Hypertonia)
2- Contracture
Shortening of soft tissue and limiting joint ROM. Starts after 6hr immobilization, 2 days later fiber type 2 starts rearrangement.
3- Paresis
Reduced motor recruitment
List 3 types of muscle overactivity seen in spastic hemiparesis π Dr. Salem
What are the benefits or goals for treatment of spasticity? ππ Dr. Salem
TECHNICAL
FUNCTIONAL
PREVENTIVE
Ref: txtbook, rehab of people with TBI.
Non-Pharmacological Interventions for Spasticity in SCI π
π‘ Active exercise interventions such as hydrotherapy, FES-assisted cycling and walking and robot-assisted exercise may produce short-term reductions in spasticity.
https://scireproject.com/wp-content/uploads/spasticity-following-a-SCI-version-6.0.compressed.pdf
To simplify physiotherapy plan of thoughts
List 2 modalities shows to be beneficial in spasticity management in stroke patient. ππ
Stroke Rehabilitation Clinician Handbook 2020 Model 3 pg52
What are absolute contra-indications to serial casting? ππ Dr. Maitha
CONTRAINDICATIONS FOR SERIAL CASTING
METHOD
Dr. Maitha Spasticity Clinic
List 2 Indications and 2 contraindications for casting in spasticity management.ππ
Indications
Contraindication
ERABI Module 6 pg25
List 8 approaches in treatment of spasticity ππ (OSCE, Teaching, Lecture by Dr. Maitha)
Mention 4 drugs (different classes) treating spasticity and what is the maximum dose per day.ππ EXAM
EDUCATION
NON-PHARMACOLOGICAL
SYSTEMIC - ORAL MEDICATIONS
1- Baclofen
GABA-B agonist, starting 5mg three times daily up to 80-100mg/day
S/E fatigue and drowsiness
2- Tizanidine (Sirdalud)
Ξ±2-adrenergic agonist
12-14 mg up to 36mg
S/E hypotension, contraindicated in peripheral vascular disease
3- Clonidine (Catapres)
Ξ±2-adrenergic agonist, 0.02 mg/day
Increased to an optimal level (0.05-0.25 mg/day).
S/E hypotension, contraindicated in peripheral vascular disease
4- Dantrolene (Dantrium)
Peripheral inhibition of Ca+ release
100-200 mg up to 300mg
Liver toxicity, muscle weakness
5- Benzodiazepines
GABA-A agonist
10 mg PO q6-8hr PRN
S/E Sedating and impaired memory & recovery
FOCAL - INJECTABLE MEDICATIONS
1- Intrahtecal Baclofen (ITB) Pump
100mcg/daily up to 1000mcg/daily max dose
Used in paraplegic SCI
2- Botulinum toxin type-A (BTX-A): BOTOX & Dysport
Seven main types of botulinum toxin are named types A to G
A, B, C1, C2, D, E , F and G, each has its own dose and effect
SURGICAL
Stroke Rehabilitation Clinician Handbook 2020 Model 3 pg52
https://scireproject.com/wp-content/uploads/spasticity-following-a-SCI-version-6.0.compressed.pdf
Baclofen MOA, Dose & Side effects ππ
Baclofen
GABA-B receptors agonist
Dose
Max of 80mg in three devided doses (i.e. 25-25-25mg)
Side effects
List 8 Signs of baclofen overdose ππ EXAM
SIGNS/SYMPTOMS OF BACLOFEN OVERDOSE
π‘ The anticholinesterase physostigmine (2 mg intravenous [IV]) may be given to reverse the respiratory depression caused by baclofen overdose.
Cuccurollo 4th Edition Chapter 12 Spasticity pg864
List 6 Signs of baclofen underdose - withdrawal ππ (OSCE & EXAM)
List 4 consequences of abruptly stopping baclofen.
SIGNS/SYMPTOMS OF BACLOFEN WITHDRAWAL
Cuccurollo 4th Edition Chapter 12 Spasticity pg865
Explain ITB Pump. List 4 Contraindication. ππ (OSCE Dr. Maitha)
Mechanism of work
Device is made up from pump and reservoir, which are implanted subcutaneously in the abdominal wall, and a catheter, which is surgically placed into the intrathecal space delivering baclofen into CSF fluid. There have been reports of effective catheter placement as high as C4. Works as infusion system with a programmable battery-powered pump.
Filling & Battery
ITB pumps are refilled via transcutaneous injection every 2-3 month.
Pump will emit an audible tone prior to the reservoir running out of medication.
Currently, battery life 7 years.
ITB Pump Trail
The recommended intrathecal bolus dose of baclofen during a screening trial is 50 ΞΌg.
If ineffective, the option is to try higher doses sequentially: 75 and 100 ΞΌg.
Some patients may experience exaggeration of the underlying weakness immediately after a screening trial, thus if spasticity was functional for them, ITB is better discontinued.
Starting daily dose
Optimal dose can be determined only by titrating the dose upward until a side effect occurs (e.g., excessive weakness, bladder retention, constipation), and then decreased to a level that does not cause the adverse event.
Benefit
The ratio of baclofen concentration at the level of the spinal cord for intrathecally administered baclofen compared to orally administered baclofen is approximately 100:1.
Precaution
Contraindication
You’ve seen a SCI patient complaining of increased spasticity
List 6 possible causes. ππ (OSCE)
List 6 causes of ITB pump failure & how to manage it ππ (OSCE)
RULE OUT TRIGGERS OF SPASTICITY
CAUSES OF ITB FAILURE
MANAGEMENT
Cuccurollo 4th Edition Chapter 12 Spasticity pg865
Braddom 5th Edition Chapter 23 Spasticity
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6788672/pdf/0650697.pdf
List 2 advantages and 2 risks of intrathecal baclofen.
ADVANTAGES:
DISADVANTAGES:
D Hill Classification of ITB complications:
Ref: Canadian Journal of Neurological Sciences 1995; 22:208-217.