i. a primer in paediatric pain management ii. providing a specialist service sachin rastogi...
TRANSCRIPT
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i. A Primer in Paediatric Pain Management ii. Providing a Specialist Service
Sachin RastogiConsultant in Pain Medicine and Anaesthesia, RVI October 2014
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Contents
• Introduction to Paediatric (chronic) pain
• 2 case vignettes
• Specialist commissioning guidelines
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Myths that have complicated the management of pain in children
• Infants have immature nervous systems and do not feel pain
• Untreated acute pain has no long-term adverse effects
• Children are at a higher risk of drug addiction when they receive opioids for pain control
• Health professionals cannot accurately measure pain in children
• Children do not suffer from chronic pain
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Development of pain systems
• The pain systems develop and function by 23rd week of gestation
• The ‘loudest’ part of pain networks (A-∂ fibres) develops first
• The descending mechanisms to modulate that pain appear last
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How does children’s pain experience differ from those of adults?
• Children’s nociceptive system has increased plasticity
• Their pain perception depends on developmental level and previous pain experiences
• They report stronger pain for stimuli that evoke moderate tissue damage in comparison to adults
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Chronic Pain in Children - Significance
• An estimated 25% of children and adolescents suffer with recurrent or chronic pain, 5-8% develop pain-related disability, girls > boys
• Impact on all aspects of child’s life – mood, sleep, school attendance, grades, participation in sports, socialisation
• Often under recognized and undertreated by clinicians
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Chronic pain conditions in children
• Headache• Abdominal pain• Musculoskeletal pain• Complex regional pain syndrome• Phantom limb pain • Cancer pain • Sickle cell pain• Cerebral palsy related pain• Chronic post-surgical pain
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Biopsychosocial model of Pain
Nociception
Pain
Suffering
PainBehaviour
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Management
• No single discipline has the expertise to assess and manage chronic pain independently
• Flexible, child-centred programme
• Multidisciplinary team: 3P approach Pharmacology / Physical / Psychological
• “Embarrassing lack of data” (Ecclestone, BMJ 2003)
• Controlled trials are urgently needed
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Case #1: History
• 10 year old female• Left ankle pain• Fall playing with dog 3
months ago• Swelling, no #• On crutches• Protective of foot
• Pain– Sharp– ‘knife-like’– Tingling– Sensitive+++– Score 10/10– Worse with movement /
touch– No alleviating factors
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Backstory• Mood – hopeless, tearful• Sleep – keeps foot in a box at
night• School – intelligent, high
achieving, bullying• FH – mental illness in family
(ADHD, depression)
• Meds – NSAIDs, paracetamol unhelpful
• Beliefs - Accused of ‘faking it’ by teachers and pupils
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Examination• Mildly swollen, red left ankle
• Temperature L=22.5, R=34.5oC
• Severe allodynia, exam aborted due to extreme distress after light touch
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• Diagnosis?CRPS Type 1
• Neuropathic pain
• Treatment–Gabapentin 300mg tds–Physio: desensitisation and strength–Psych: to address stress and fear avoidance
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Follow up : 2 months later
• Pain score 0/10• Physical function: active, karate, running• Mood: happy, positive
• Gabapentin weaned, no F/U
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Case #2:“MY LEGS DON’T WORK”
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14 year old female
Presenting complaint
• Lower back pain / spasm• Lower limb paralysis• ‘Piercing’ pain lower back• 7-10/10• Acute onset overnight• No trigger
Past medical history
• Right lung agenesis• Dextrocardia• Scoliosis fusion 2001• Back brace worn till 2011• Back pain ‘all life’
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• Examination– Afebrile– Normal upper limbs– No movement proximal
legs, knees, ankles, only toes
– No light touch to waist– Normal proprioception,
vibration, reflexes to lower limbs
• Investigations– Bloods– MRI lower back– SSEPs– EMG– NCS
• Services involved– Paeds / Ortho / Neuro /
APS / Chronic pain / Neurosurg / Psych
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Yellow flags
• IVF baby, only child• Born 32 weeks ECS• NICU 1 month• Over solicitous parents• Separation anxiety• No friends at school• Bullying
• Health anxiety• Fear avoidance• Hurt=harm beliefs• Seeking ‘medical or surgical’
answer / diagnosis
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• Diagnosis?
– Idiopathic acute onset paraplegia– Mechanical lower back pain compounded by
significant anxiety and fear avoidance– Medically unexplained pain / symptoms– Conversion disorder
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Management
• Simple analgesics• Daily physio – very slow progress• Refused psych meds• Required intensive daily physio / psych• Pain management programme for children• Bath
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Paediatric Chronic Pain- Management and referral from Primary Care in North West England
Anaesthesia 2012 67(S1): 36
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Chronic pain services for children
• Gold standard: interdisciplinary team comprising:– Physician– Physical therapist– Psychologist– Specialist nurse– (Occupational therapist)