Pain Flashcards

1
Q

what is the new definition of pain

A

an unplainsant sensory and emotional experience associated with or resembling that associated with actual or potential tissue damage

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2
Q

what are the 6 carasterics of definition of pain

A
  • pain is always a personal experience that is influence by biological, psychological and social factors
  • pain and nociceptor are different phenomena. pain cannot be inferred solely from activity in sensory neuron
  • through their life experience, indivdual learn the concept of pain
    -a person’s report of an experience as pain should be respect
  • verbal description is only one of several behaviors to express pain: inability to communicate does not negate the possibility that a human experience pain
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3
Q

pain is a

A

subjective sensation and composed of a variety of human discomforts

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4
Q

perfeception of pain is modified how

A

by past experience and expectations

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5
Q

slection of a therapeutic agent should be based on

A

a sound understanding of its physical properties and physiologic effects

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6
Q

what is acute pain

A

pain of suddent onset

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7
Q

what is chronic pain

A

pain lastinf for mnore than 6 month

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8
Q

what is refered pain

A

pain that is perceived to be in an area that seems to have little relation to the existing pathology
Kehr’s Sign
Myofascial trigger points

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9
Q

what is nociceptive pain

A

Pain that arises from actual or threatened damage to non-neural tissue and is due to the activation of nociceptors.

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10
Q

what is neuropathic pain

A

Pain caused by a lesion or disease of the somatosensory nervous system.

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11
Q

what is nociplastic pain

A

Pain that arises from altered nociception despite no clear evidence of actual or threatened tissue damage

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12
Q

what nociplastic pain cause

A

Causing the activation of peripheral nociceptors or evidence for disease or lesion of the somatosensory system causing the pain.

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13
Q

what is a noxious stimulus

A

A stimulus that is damaging or threatens damage to normal tissues.

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14
Q

what is pain threshold

A

The minimum intensity of a stimulus that is perceived as painful.

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15
Q

what is the pain tolerance level

A

The maximum intensity of a pain-producing stimulus that a subject is willing to accept in a given situation.

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16
Q

what are the 2 type of pain

A

radiating and sclerotmic pain

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17
Q

what is sclerotomic pain

A

associated with a segment of bone innervated by a spinal segment that is a
deep somatic pain

gnawing, aching, sharp

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18
Q

after common cold what is the most common reason for health care visit

A

pain

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19
Q

provenance of chronic pain range from

A

8% to 60%

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20
Q

pain can be measure how

A

by asking if the pain change, interfere, increase, decrease with the following
Pain intensity
Pain quality
Pain location
Pain behaviour
Pain interference
Depression
Sleep quality
Alcohol and drug use

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21
Q

what is pain intensity and how can it be describe

A

Is the magnitude or severity of perceived pain
Current versus usual pain
by using visual analogue scale, 1-10 scale

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22
Q

what does the scale does best for describing the pain

A

indicate the change in pain
30% change is meaningful (2 points or more on scale)

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23
Q

what to do when we do a pain profile

A

Pain profiles
Identify type of pain
Quantify intensity of pain
Evaluate the effect of the pain experience on patients’ level of function
Assess the psychosocial impact of pain

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24
Q

utility of pain chart

A

establish spatial properties of pain
Patient colors pictures in areas that correspond to pain
(blue = aching pain, yellow =numbness or tingling, red = burning pain, green =cramping pain)

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25
which questionnaire can be use to represent dimension of the pain experience
Mcgill pain questionnaire
26
what can be used to asses functional impairment associated with pain
self-reported tool
27
what does the self-reported tool do
Measures the frequency of certain behaviors such as housework, recreation and social activities that produce pain
28
what is the most common acute pain profil used in sport medicine clinic
numeric pain scale
29
goal in managing pain
To control / manage acute pain and protect patient from further injury while encouraging progressive exercise in a supervised environment. Reducing pain is an essential part of treatmen t Encourage body to heal through exercise designed to progressively increase functional capacity and to return the patient to work, recreational and other activities as swiftly and safely as possible
30
afferent nerve fiver transmit impulse where
from sensory receptor toward the brain
31
efferent nerve fiber transmit impulse where
motor neuron transmit impulse from the brain toward periphery
32
what pain accomodation means
Decline in generator potential and the reduction of frequency that occur with prolonged stimulus or with frequently repeated stimuli
33
what are the 4 type of first order neutrons
A-alpha, A-beta, A-S, C
34
which first order neutron has large diameter and which one have small diameter
large: A-alpha and A-beta small: A-s, C
35
wide dynamic range second order afferent neutron receive input from
A-beta, A-s, C
36
nociceptive specific second order afferent response only to what and receive input only from
noxious stimulation and only from a-s, C
37
for information to pass between neutron what need to happen
, a transmitter substance must be released from one neuron terminal - enter the synaptic cleft - and attach to a receptor site on the next neuron This was thought to occur due to chemicals called neurotransmitters
38
norepinephrine inhibit pain where
between 1st and 2nd order neutron
39
serotin is active where
in descending pathway
40
substance P is secrete from
small-diameter primary afferent neutron
41
enkephalin is active where
oppose active in descending pathway
42
b-endorphin is active where
opiod endogenous to CNS
43
what transmit pain signal
nociceptive neuron
44
injury to cell cause release of
substance P and prostaglandi
45
role of nociception
Sensitize the nociceptors in and around the area of injury by lowering their depolarization threshold Enhancing pain response
46
substance P is a transmitter substance btw
1st and 2nd order afferent fibers
47
what is primary hyperalgesia
when threshold is lowered and pain increase
48
what is secondary hyperalgesia
Over several hours if there is continual dispersal of chemicals there is an increase of size of the painful area
49
which fibre transmit sensation of pain and temperature
As, C
50
which fiber transmit acute pain and why
As neurons originate from receptors located in skin and transmit “fast pain”
51
which fiber transmit chronic pain
C neurons originate from both superficial tissue (skin) and deeper tissue (ligaments and muscle) and transmit “slow pain”
52
which fiber transmit chronic pain
C neurons originate from both superficial tissue (skin) and deeper tissue (ligaments and muscle) and transmit “slow pain”
53
what are the mechanism of pain
gate control theory descending mechanism release of endogenous opioid (B-endorphin)
54
explain the gate control theory
Information from ascending Ab afferents and (pain messages) carried along As and C afferent fibers enter the dorsal horn Impulses stimulate the substantia gelatinosa at dorsal horn of the spinal cord inhibiting synaptic transmission in As & C fiber afferent pathways Sensory information coming from Ab fibers is transmitted to higher centers in brain Pain message" carried along As & C fibers is not transmitted to second-order neurons and never reaches sensory centers
55
explain descending pain control mechanism
see schema
56
interneront in descending pain control release what
enkephalin into dorsal horn which inhibit the synaptic transmission of impulse to second order afferent neutron
57
what is release from hypothalamus from stimulation of As and C afferent
B-endorphin
58
what is release from periaqueductal grey from stimulation of As and C afferent
dynorphin
59
therapeutic modalities can be used to
Stimulate release of endogenous opioids through prolonged small diameter fiber stimulation with TENS
60
what is the placebo
Medically inactive substance that delivers desired response Placebo effect – observable, measureable improvement of health not attributable to treatment