Pain 46 Flashcards
Referred pain
Appear in different areas
Visceral pain
Pain arising from organs
Types of pain
Location
Duration
Intensity
Etiology
Chronic pain
Three months or longer
Mild pain
1-3
Moderate pain
4-6
Severe pain
7-10
Nociceptive
Intact nervous system says tissues are damaged
Somatic pain
Skin, muscles, bone or connective tissue nociceptive pain
Subcategories of nociceptive pain
Somatic and visceral
Neuropathic pain
Damaged nerves due to illness, injury, or unknown
Subtypes of neuropathic pain
Peripheral neuropathic pain and central neuropathic pain
Peripheral neuropathic pain
Phantom limb pain, carpal tunnel syndrome
Central neuropathic pain
MS, spinal cord, post stroke
Sympathetically maintained pain
Occasional abnormal connections between pain fibers in sympathetic nerves.
Edema, temperature, blood flow
Pain threshold
Least amount of stimuli that is needed for a person to label pain
Pain tolerance
Maximum amount of painful stimuli that a person is willing to withstand without seeking avoidance of pain or relief
Hyperalgesia and hyperpathia
Heighten responses to painful stimuli
Allodynia
Non painful stimuli that produces pain. Light touch, linen, water, wind
Dysesthesia
Unpleasant abnormal sensation. Mimics central neuropathic pain
Windup
Progressive increase in excitability and sensitivity of spinal cord neurons
Nociception
Physiological processes related to pain perception.
Transduction, transmission, perception, modulation
Nociceptors
Pain receptors excited by mechanical, thermal, chemical stimuli
Mechanical stimuli
Trauma, edema, blockage of duct, tumor, muscle spasm
Thermal stimuli
Heat/ cold
Chemical stimuli
Tissue ischemia
Muscle spasm
Modulation
Natural opioids in defending system
Fifth vital sign
Pain
Factors that effect pain experience
Culture Developmental stage Environmental/ support Previous experiences Reason/ meaning
Wong-baker faces
Impaired adults
Language barrier
FLACC
2 months- 7 years Face Leg Activity Cry Consolability
PAINAD
Dementia pain scale Breathing Vocalization Face Body Consolability
Pain pattern
Onset, duration, recurrence
Precipitating factors
Activities that precede pain
Tolerance
Clients opioids dose, over time leads to decreased sensitivity
Physical dependence
Expected physical response when long term options treatment is withdrawn
Addiction
Chronic, relapsing treatable disease influenced by genetic, psychosocial factors, environment
Four Cs of addiction
Craving
Lack of control
Compulsive
Continued despite harm
Pseudoaddiction
Condition that results from understatement of pain, client focused on finding pain relief
Analgesic administration
Clients unlikely to become addicted when used for pain
Preemptive anagesia
Administration of analgesics before surgery to decrease or relieve pain after surgery
WHO step 1
Mild pain
Nonopiod analgesics
With or without coanalgesic
WHO step 2
Opioids for moderate pain
Combination
WHO step 3
Severe pain after full doses of step 2
Opioids titrated in ACT scheduled doses
Nonopiods
Nonsteroidal anti inflammatory drugs NSAID
Aspirin
Three primary types of opioids
Full agonists
Mixed agonist/antagonist
Partial agonists
Full agonists
Pure opioid, bind tightly to mu receptors, maximum pain inhibition
Mixed agonists-antagonist
Can act like opioids when pure opioids have not been taken or
Block and inactivate pure opioids
Limited dose
Partial agonists
Ceiling effect
Block mu receptors but bind at kappa receptors
Coanalgesic
Not a pain medication, but can relieve symptoms
Antidepressants
Side effects
Sleep
Transnasal
Vascular nasal mucosa
Transdermal
Binds to subcutaneous fat
Transmucosal
Oral mucosa
Subcutaneous
Paraenternal
Catheters
Infusion pumps
Intraspinal analgesia routes
Volume
Continuous infusion via pump
Both
Contra lateral stimulation
Stimulating skin in area opposite to painful area
Transcutaneous electrical nerve stimulation
Electrical stimulation over painful area or nerve closest to pain
Causes modulation
Nerve block
Chemical interruption of a nerve pathway via local anesthetic
Dental work
Pain
Unpleasant sensory and emotional experience associated with actual or potential tissue damage
Max dose Tylenol
3000 mg
Effects liver
Ibuprofen max dose
3200 mg
Kidneys
Ulcer
Thin blood
Aspirin max dose
4000 mg
Thin blood
Irritate GI
Ceiling effect
More drug does not work
Narrow therapeutic index
Not a lot of room between therapy and toxic dose
Transient
Pain goes away
Persistent
Never completely goes away
Examples of opioids
Hydromorphone Oxymorphone Codeine Hydrocodone Fentanyl Tramadol
Coanalgesics examples
Antidepressant Anticonvulsants Local antic ethics Sedatives Antispasmodic
Equianalgesia
Refers to relative potency of various opioid analgesics compared to parenteral
Intramuscular
Variable absorption rates
Unpredictable onset and peak
Intravenous administration
Rapid effect
Side effect
Epidural administration
Sterile
No preservative
SUPERIOR pain relief
Much less medication