Pain Management Flashcards
What is pain?
- whatever and wherever the pt says it is
- learned through life experiences
- influenced by biological, social, and psychological factors
- expressed in many ways
Gate Control Theory
- describes the transmission of painful stimuli and recognizes a relationship between pain and emotions
- small and large nerve fibers conduct and inhibit pain stimuli toward the brain
- gating mechanism determines the impulses that reach the brain
Small nerve fibers
conduct excitatory pain stimuli toward the brain, exaggerating the effect of arriving stimuli through a positive feedback mechanism
Large nerve fibers
inhibit the transmission of pain impulses from the spinal cord to the brain through a negative feedback system
The pain process
- Transduction
- Transmission
- Perception of pain
- Modulation
Transduction
-activation of pain receptors
- electrical impulse that travels from the periphery to the spinal cord at the dorsal horn from the conversion of painful stimuli into electrical pulses
Transmission
- conduction along pathways (A- delta and C- delta fibers)
- from the site of injury/inflammation conducted to the spinal cord
- the time when you pull back from whatever is causing pain
Perception of Pain
- awareness of the characteristics of pain
- perceived amount of pain differs for each individual
Modulation of pain
- inhibition or modifcation of pain
- neuromodulators are regulated or modified by the sensation of pain
- neuromodulators: endorphins, dynorphins, enkephalins
Acute
duration of pain
- rapid in onset, varies in intensity and duration
- protective in nature
- example: burst appendix
Chronic
duration of pain
- may be limited, intermittent, persistent
- lasts beyond normal healing period
- periods or remission or exacerbation
- example: rheumatoid arthritis
Nociceptive
etiology of pain
- occurs during normal pain process
- nociceptors are activated by actual or threatened damage to nonneural tissue
Neuropathic
etiology of pain
- caused by disease or lesion of the peripheral or central somatosensory nervous system
- burning, electric, tingling, stabbing
- example: diabetic neuropathy
Nociplastic
etiology of pain
- neither nociceptive or neuropathic but is chronic primary pain
- often misdiagnosed
Intractable
etiology of pain
- occurs when there is resistance to interventions or treatment