pathophysiology of paediatric pain€¦ · paediatric pain maarten o. mensink, md princess máxima...

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Pathophysiology of paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands [email protected]

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Page 1: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pathophysiology of

paediatric pain

Maarten O. Mensink, MD

Princess Máxima Centre, Utrecht, The Netherlands

[email protected]

Page 2: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

case

Patient A. female

14 years

JIA

Affected joints: knees/ankles

℞ methotrexate

Page 3: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

case

decursus Good inflammatory respons

No signs of inflammation

High pain scores (NRS 6-8)

Mother: “Usually doesn't complain about pain,

so yes, I'm verry worried.”

Page 4: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

keywords:

brain

spinal cord

Nerve

Soma

Page 5: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

Page 6: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

axon typeDiameter (μm)Speed (m/s)

Aα13-20

80-120

Aβ6-1235-75

Aδ1-5

5-35

C0.2-1.50.5-2

Page 7: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

Page 8: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

C

Aβ – Aδ

Page 9: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

Page 10: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

Page 11: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain anatomy

Page 12: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain in action

Wei F, Zhuo M. J Physiol, 2001

Page 13: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

pain in action

Page 14: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pain chronification

keywords:

glutamate

NMDA-receptor

Long Term Potentiation (LTP)

Wide Dynamic Range neuron (WDR)

Central sensitisation

Page 15: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pain chronification

Wei F, Zhuo M. J Physiol, 2001

Page 16: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pain chronification

Page 17: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Chronificatie pijn

Page 18: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pain chronification

Page 19: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pain chronification

Central sensitisation:

Restructuring of synapses

learning:

– memory

– anticipation

Page 20: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Pain chronification

Page 21: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Diagnosing pain

pain-history:

pain-nature

pain-luxerative factors

pain-time factors

pain-related factors

Page 22: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

diagnosing pain

pain-physical examination:

inspection

palpate

neurological examination

Page 23: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

diagnosing pain

integration with system

fear/vigilance

cognition

Parent-child system

contributing somatic factors

Page 24: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

treatment

pharmacological

tissue damage

inflammation

neuropathy

Page 25: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

treatment

psychological

CBT

EMDR

mindfullness

system therapy

Page 26: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

treatment

fysiotherapeutical

musculoskeletal evaluation

muscular training

Page 27: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

Thank you

Maarten O. Mensink, MD

Princess Máxima Centre, Utrecht, The Netherlands

[email protected]

Page 28: Pathophysiology of paediatric pain€¦ · paediatric pain Maarten O. Mensink, MD Princess Máxima Centre, Utrecht, The Netherlands m.o.mensink-4@prinsesmaximacentrum.nl. case Patient

6th of february 2020

#beppa@BBeppa