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CURRICULUM VITAE
Name : Dr. Arie Utariani, dr. SpAn. KAPDosen/Staff Pengajar Anestesiologi Fakultas Kedokteran
Universitas Airlangga
Posisi / Jabatan :•Ketua Program Studi Anestesiologi & Terapi Intensif
Fakultas Kedokteran Universitas Airlangga
•Ketua Program Studi Anestesi Pediatrik Fakultas
Kedokteran Universitas Airlangga
POSTOPERATIVE PAIN MANAGEMENT FOR PEDIATRIC
PATIENT
Arie UtarianiDept. of Anaesthesiology & Reanimation
Dr. Soetomo Hospital – University of Airlangga Surabaya
The aim of effective post-operative pain management is to:
•Improve the comfort and satisfaction of the patient •Facilitate recovery and functional ability •Reduce morbidity •Promote rapid discharge from hospital
Recommendation
Post-operative pain should be treated adequately, to avoid post-operative complications and the development of chronic pain (Grade of Recommendation: B)
Clinical definition of pain
“An unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage...
1. IASP Pain Terminology. In Merskey H & Bogduk N eds. Classification of Chronic Pain, Second Edition, IASP Task Force on Taxonomy. IASP Press, Seattle 1994:209-14.
Pain Pathway
Pain: Clinical Types Nociceptive pain
Transient pain in response to noxious stimuli
Inflammatory pain Spontaneous pain and hypersensitivity to pain in response to tissue damage and inflammation
Neuropathic painSpontaneous pain and hypersensitivity to pain in association with damage to or a lesion of the nervous system
Functional pain spontaneous pain results from a dysfunction in central processing of
pain in dorsal horn or other regions of the spinal cord.
Woolf. Ann Intern Med. 2004;140:441-451.
Postoperative pain is nociceptive
Transmission
Transduction
Reuben et al. J Bone Joint Surg. 2000;82:1754-1766.
Key sites of developmental transition in infant pain pathways
Nature Clinical Practice Neurology (2009) 5, 35-50doi:10.1038/ncpneuro0984
(1) Peripheral innervation is vulnerable and sensitive to tissue injury. (2) Dorsal horn sensory pathways undergo considerable postnatal reorganization. (3) Nociceptive reflex pathways are diffuse and poorly tuned. (4) Primary hyperalgesia develops before secondary hyperalgesia. (5) Endogenous descending controls via the brainstem are unbalanced. (6) Extensive cortical development begins postnatally, but little is known of the development of intracortical network connections in infancy. (7) The somatosensory cortex is activated by noxious stimulation from an early age, but little is known of activation in other cortical regions.
Fitzgerald M. The birth of pain. MRC News (London) 1998; Summer: 20-23.
Fitzgerald M. The birth of pain. MRC News (London) 1998; Summer: 20-23.
Fitzgerald M. The birth of pain. MRC News (London) 1998; Summer: 20-23.
Lingering pain: For weeks after injury at birth damaged skin can stay more touch sensitive than uninjured skin.
Fitzgerald M. The birth of pain. MRC News (London) 1998; Summer: 20-23.
0 1 2 3
normal
neonatally injured area
Postnatal age in weeks
Touc
h th
resh
old
Fitzgerald M and Walker SM (2008) Infant pain management: a developmental neurobiological approachNat Clin Pract Neurol doi:10.1038/ncpneuro0984
Methods of assessing infant pain
•The neurophysiological techniques EMG, EEG and NIRS are not used for routine
pain assessment but are increasingly being used in research studies of infant pain.
•Abbreviations: EMG, electromyogram; NIRS, near-infrared spectroscopy; pO2,
partial pressure of oxygen.
Pain Mechanisms in Newborns Complete myelination of nerve pathways not required for
pain transmission
Pain impulse transmission in neonates Occur along nonmyelinated C-fibers
C-fibers are unmyelinated and A-delta fibers are thinly myelinated
Incomplete myelination results in slower conduction velocity but offset by shorter distances
Complete myelination of pain pathways to brainstem and thalamus by 30 weeks gestation; thalamus to cortex by 37 weeks
Nociceptive nerve endings in cutaneous and mucous surfaces by 20 weeks of gestation
Inhibitory pathways do not develop until after birth
Threshold for responding to cutaneous stimulation is lowest in youngest neonates
Pain Mechanisms in Newborns,cont.
What does it mean ?
Young infants may perceive pain more intensively than older children or adults because their descending control mechanisms are immature
This limits their ability to modulate the pain experience
Physiologic Response to pain
Stress Responses to Postoperative Pain in Neonate
Biochemical Changes: stress hormones corticosterone adrenaline, noradrenaline glucagon aldosterone
metabolites glucose lactate pyruvate
Pain Responses•Tachycardia•Tchypnea•Increase blood pressure
•Tissue trauma results in release of mediators of inflammation and stress hormons•Activation of this stress response leads to:
-Retention of water and sodium-Increase in metabolic rate
Complications•Respiretory•Cardiovascular •Thromboembolic •Gastrointestinal•Musculoskeletal•Psychological
Post-operative pain management. In: Guidelines on pain management. Arnhem, The Netherlands: European Association of Urology (EAU); 2009 Mar. p. 62-82. [79 references]
Facts about Pain in Infants and Children
Infants, regardless of age, feel pain.
The youngest premature infant has the anatomic and physiologic components to perceive pain or “nociception” and demonstrates a severe stress response to painful stimuli.
Unrelieved pain in infants can permanently change their nervous system and may “prime” them for having chronic pain.
Postoperative pain can be divided into acute pain and chronic pain:
Acute pain is experienced immediately after
surgery (up to 7 days)
Pain which lasts more than 3 months after the injury is considered tobe chronic pain
Pain evaluation & assessment
Pain Assessment•Careful pain assessment by the anesthetist, surgeon or the acute pain team can lead to more efficient pain control, adequate doses of the correct drugs, and diminished morbidity and mortality (Level of evidence: 2a). •Pain should be assessed before and after treatment.
•In the post-anaesthesia care unit (PACU), pain should be evaluated, treated and re-evaluated initially every 15 minutes and then every 1-2 hours.
• After discharge from the PACU to the surgical ward, pain should be assessed every 4-8 hours before and after treatment.
RecommendationAdequate post-operative pain assessment can lead to more effective pain control and fewer post-operative complications (Grade of recommendation: B).Guidelines on pain management. Arnhem, The Netherlands: European Association of Urology (EAU); 2009 Mar. p. 62-82. [79 references]
Q – Question the childU – Use pain rating scalesE – Evaluate child’s behaviorS – Secure parent’s involvementT – Take cause of pain into accountT – Take earliest action
QUESTT(One such standard approach of
assessment of pain) QUEST principles of pain assessment
Baker, Wong. Orthop Nurs 6,1987;11-21
PHYSIOLOGICVital signO2 ChangesHormonal changesSweating Palmar
VOCALSpecific : Self reportNon specifik : Cry, Scream, groan
BEHAVIORFacial ExpressionPosturActivityBehavior stateResponse to intervention
PAIN ASSESSMEN
T
QU
E E
ST
CONTEXTUALPain Stimulus / HistoryTemperamentAge, SexCulturSignificant Other input
Multidimensional Model of Pain AssessmentPAIN ASSESSMENT
PAIN SCALESINFANTS TODDLERS
AND PRESCHOOLER
S
SCHOOL AGE AND
ADOLESCENTS
CRIES CHEOPS
FLACC FLACC FACES
NIPS OUCHER SCALE NUMERIC
SUNCRIES : Crying, Require s O2 for saturation > 95%, Increased VS, Expression, Sleeplessness.FLACC : Faces, Legs, Activity, Cry, ConsolabilityNIPS : Neonatal Infant Pain ScaleSUN : Scale for Use in NewbornsCHEOPS : Children’s Hospital of Eastern Ontario Pain ScoreOUCHER SCALE : Combaines pictures with a Visual Analog Scale (VAS)
CRIES scales(Crying, Require s O2 for saturation > 95%, Increased VS, Expression, Sleeplessness.)
ITEM Score 0 Score 1 Score 2Crying No Higgh Pitched InconsolableRequires O2For saturation > 95%
No < 30% O2 > 30% O2
Increased Vital signs
HR and BP= or < preop
Increase in HR or BP< 20% preop
Increase in HR or BP> 20% preop
Expression None Grimace Grimace / Grunt
Sleepless No Wakes atfrequent
Constantlyawake
Preop= Preoperative
PARAMETER FINDING : characteristic
POINTS
Cry 4 8Facial 3 3Child verbal 3 6Torse 6 11Touch 5 9
Legs 5 9
Children's Hospital of Eastern Ontario Pain Scale (CHEOPS) in Young Children
The initial study was done on children 1 to 5 years of age. According to Mitchell (1999) it is intended for ages 0-4. Interpretation: minimum score: 4 maximum score: 13
FLACC Behavior Pain Assessment
Children and Infants Postoperative Pain Scale (ChIPPS)
Item Score 0 Score 1
Score 2
Crying None Moaning ScreamingFacial expression
Relaxed smiling Wry mouth Grimacing
Posture of the trunk Neutral Variable Rear up
Posture of the legs Neutral Kicking Tightened
Motor restlessness None Moderate RestlessTotal score indicates how the baby should be managed according to the scale
•0 - 3 No requirement for treating pain,•4 – 10 Progressively greater need for analgesia.
Behavior scale and /or Physiological stress parameter
Buttner W, Finke W: Paediatr Anaesth 2000;10(3):303-18.
Faces pain
assessment scale
VRS painassessment scale
NRSassessment scale
VASassessment scale
PatientAble to
Communicate well ?
No
Yes
Choice of assessment tool
Wong-Baker Faces Scale (0-10)
For children over the age of three, for adults who are cognitively or developmentally delayed, and for the use with geriatric patients who are unable to use the numeric scale The care provider is to explain to the patient that the "0" represents "NO PAIN" and "10" represents the "WORST" pain.
How is Your Pain Today?
NoPain
Worst Pain
Numeric Scale = NRS
0 21 43 8 7
5 6 10
9
Moderate pain
No pain Littlepain
Medium pain
Large pain
Worst pain
Verbal Ranting Scale = VRS
No Pain Worst Pain
Pain Intensity Ranting Scales
Visual-Analogue Scale = VAS
Usually 0-10 cm long line.Placed either vertical or horizontal.
VAS or Face scale can be used from 5-6 year of age
INFANTS (gold Standard – FACIAL expression)
•Eyes Forcibly closed•Brows lowered and furrowed•Nasal roots broadened and
bulged•Deepened nasolabial furrow•Square mouth•Cupped tongue
CHILDREN WITH COGNITIVE IMPAIRMENT
VOCAL BEHAVIOR Moaning, crying, screaming
SOCIAL BEHAVIOR Not cooperating, withdrawn,Difficult to distract
FASCIAL EXPRESSION Furrowed brow, changes in eyes,Clenches or grinds teesth, thrusts tongue out
ACTIVITY Not moving, quiet, agitated, fidgety
PHYSICAL SIGNS Changes in color perspiring, sharp intakes of breath, gasping
BODY AND LIMBS Stiff, spastic, tense, rigid
Concept of “Total Pain Management”
Four aspects must be addressed:1. Physical2. Psychological3. Social4. Spiritual
Last 3 can be met only after pain and related symptoms (e.g., N/V, anxiety) are controlled.
Pain management & monitoring
Is responsive to NSAID’s, coxibs, paracetamol and opiates
Postoperative pain is nociceptive
Transmission
Transduction
Reuben et al. J Bone Joint Surg. 2000;82:1754-1766.
Procedure-related pain managementIntervention: The first & most essential intervention:
prepare the child & family for painful procedure parents may benefit from written information
Pharmacologic management: Analgesia Sedation
Nonpharmacologic management: Effective for children Distraction, guided imagery, muscle relaxation
Texas Cancer Council Booklet, 1999
Non-pharmacologic Interventions
Neonate/infant
Toddler Preschooler School Age Adolescent
Sensory Sensory Sensory/Behavior
Sensory/Behavior/ Cognitive
Sensory/Behavior/ Cognitive
•Positioning•Swaddling•Rocking/Cuddling•Touch/massage•Dim
Lighting•Visual Distraction•Sucking•Sucrose/
Water solution on pacifier
•Positioning•Play therapy •Hugging/ Holding•Touch/ massage •Security object (blanket, toy, stuffed animal)•Distraction devices (toys/music/videos)•Heat/cold application•Imagery•Pacifier
•Positioning•Play therapy •Hugging/ Holding•Touch/ massage•Distraction devices (toys/music/videos/ games, books)•Heat/cold application•Imagery
•Positioning•Play therapy •Hugging/ Holding•Touch/ massage•Distraction devices (toys/music/videos/ breathing techniques)•Heat/cold application•Imagery•Humor•Exercise
•Positioning•Heat/cold application•Imagery•Humor•Prayers• breathing techniques•Relaxation techniques•Distraction devices (especially music/videos)
Pharmacologic Interventions Mild Pain :
•Acetaminophen •NSAIDs
Moderate to Severe Pain•Opioid•Non-Opioid•Local/Topical anaesthetics
Analgesic drugs Nonsteroidal Anti-inflammatory Drugs
(acetaminophen, aspirin, ibuprofen, diclofenac sodium, naproxen, cox-2 inhibitor)
Opioids (codein, oxycodone, pethidine, morphine, fentanyl)
Adjuvants (co-analgesic drugs) (amitriptyline, gabapentin, carbamazepine,
lorazepam, diazepam, corticosteroid)
The doses and routes of administration of drugs described above are general examples and each patient should be assessed individually before prescribing.
Texas Cancer Council Booklet, 1999
Drug DoseDiclofenac Oral, Rectal 1 mg/kg/8h
Ibuprofen Oral 10 mg/kg/8h
Ketorolac IV, IM, PODo not use with other NSAIDs
0,5 mg/kg/8h orContinuous infustion
Paracetamol Rectal 40 mg /kg; followed by 30 mg/kg/8h
Oral 20 mg/kg and 30 mg/kg/12h
Newborn, rectal 20 mg/kg and 30 mg/kg/12 jam
Newborn , oral 30 mg/kg and 20 mg/kg/8h
NSAIDs and Paracetamol
Drug DoseMorphin Newborn 0,02 mg/kg/8h
Newborn (for continuous infustion) 5-15 μg/kg/h
Children 0,05-0,1 mg/kg/h
Children (for continuous infustion) 0-30 μg/kg/h
Fentanyl According to surgery 2-10 μg/kg
In ICU 2-5 μg/kg/h
Oral transmucosal FentanylCitrate lollipop
15-20 μg/kg
Remifentanil Surgery 0,5-1 μg/kg/min
In ICU 0,1-0,05 μg/kg/min
Codein Mainly used in combination with Paracetamol (suppositories or syrup)(not recommended for children under < 2 year)
0,5-1 mg /kg/4h
OPIOID
Local Anaesthetic
Caudal block
Lumbarblock
Thoracicblock
Bupivacaine 0,25% 2,5 mg/kg 2 mg/kg 1-1,2 mg/kg
Levobupivacaine 0,2-0,25%
2-2,5 mg/kg 1,4-2 mg/kg 0,8-1 mg/kg
Ropivacaine 0,2% 2 mg/kg 1,4 mg/kg 0,8-1 mg/kg
Examples of local anaesthetics and mean doses for single shot
epidural
Local Anaesthetic
Newborn and Infants (up to 1 year)
Older Children(>1 year)
Bupivacaine 0,125%Levobupivacaine 0,1%Ropivacain 0,1%
0,2 mg/kg/h 0,3-0,4 mg/kg/h
Ropivacaine is not licenced for use in infants under the age of 1 year
Examples of local anaesthetics and mean doses for continuous infusion via catheter
Drug DoseMorphine 0,02-0,05 mg/kg
Fentanyl 1,2 μg/kg or 0,5–1 μg/kg/h
Sufentanyl 0,2-0,3 μg/kg
Clonidine 1-2 μg/kg single shot or 3 μg/kg/24h in epidural infusion
Ketamine 0,5 mg/kg
Adjuvant drugs for epidural use
Local anaesthetic/adjuvant
Newborns and infants (up to 1 year)
Older Children (>1 year)
Ropivacaine 0,2% or Levobupivacaine 0,25%
0,2 mg/kg/h 0,4 mg/kg/h
Clonidine can be added as adjuvant
3 μg/kg/h
Examples of local anaesthetics and mean doses for continuouse peripheral nerve block
in children
Ropivacaine is not licenced for use in infants under the age of 1 year
Multimodal Analgesia Attacks Different Points Along the Pain
Pathway
Analgesic ladder:The plan of anaesthesia should always include postoperative analgesia and should be safe, effective and convenient.This will have been discussed as part of the pre-operative visit.
Each child will return from theatre with an appropriate regime of post-operative analgesia prescribed.Those children who are receiving intravenous opioids will reviewed by the Pain Control Service. They are also available for advice on all apsects of pain management.
Slight Paracetamol
Mild
Paracetamol+
NSID
Moderate Paracetamol
NSID +Weak opioidEq: codeine,
tramadol
Severe Paracetamol
NSID +Poten opioid
Eq: morphine,pehtidine
Increasing pain
Observe for Improvement in Behavior Following an Analgesic
Complication
Positive role of painAcute pain plays a useful "positive" physiological role by:
Providing a warning of tissue damage Inducing immobilisation to allow appropriate healing
Negative effects of painShort term negative effects of acute pain include:
1. Emotional and physical suffering for the patient2. Sleep disturbance3. Cardiovascular side effects4. Increased oxygen consumption5. Impaired bowel6. respiratory function7. Delays mobilisation and promotes thromboembolism
Long term negative effects of acute pain:
Severe acute pain is a risk factor for the development of chronic pain
There is a risk of behavioural changes in children for a prolonged period (up to 1 year) after surgical pain
Conclution
Awareness and assessment of the pain in
postoperative children is important
Remember the different pharmacology in neonates, infants and children
Multi-modal approach to preventing and treating
pain to minimize adverse effects
Regional analgesia must be considered unless
contraindicated
The Golden RuleWhat is painful to an adult is painful to an infant and child
unless proven otherwise.
THANK YOU