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PA: Pain
| Question | Answer |
|---|---|
| What are the best predictors of chronic pain? | Level of happiness at home Level of happiness at work |
| What are the 4 sources of pain? | Peripheral nociceptive Peripheral neurogenic Central Pain Symathetic Nervous System |
| What is peripheral nociceptive pain? | Pain transmitted via A delta and C fibers to dorsal horn and brain |
| What is peripheral neurogenic pain? | Injury to peripheral nervous system or to a nerve |
| What is central pain? | Creates abnormal pain states |
| What is allodynia? | Pain prevoked by stimulus that doesn't typically cause pain |
| What is hyperalgesia? | Hightened response to pain |
| What is chronic pain? | Pain lasting longer than 6 months |
| What type of pain falls under sympathetic nervous system? | Complex Regional Pain Syndrome |
| What did CRPD used to be called? | Reflex Sympathetic Dystrophy Syndrome |
| What is Type I CRPD? | ANYTHING touching them hurts (putting on jeans) |
| What are s/s of chronic pain? | Depressed, can't sleep, fatigued |
| What is Type II CRPD? | Peripheral nerve distribution |
| Which type of fibers are faster and larger? | A delta fibers (they are mylenated) |
| Primarily what kind of nociceptors are A delta fibers? | Mechanical nocicetors |
| What type of sensation would you feel with A delta fibers? | Sharp, pricking sensation for a short duration |
| What type of fibers make up the majority of nociceptors? | C fibers |
| What are C fibers sensitive to? | VERY intense mechanical and temperature |
| What are the 4 types of mechanoreceptors? | Meissner's Corpuscles Pacinian corpuscles Merkel's Discs Ruffini Ending |
| What are meissner's corpuscles sensitive to? | Light touch (unmyelinated) |
| What are pacinian corpuscles sensitive to? | Deep pressure, vibration |
| What are Merkel's discs sensitive to? | Pressure and texture |
| What are ruffini endings sensitive to? | Constant pressure |
| What are krause's end bulbs sensitive to? | Cold temperatures |
| Afferent messages enter the spine via what? | The dorsal portion of the spinal nerve |
| Two point discrimination and proprioception enter via what? | Medial portion of the dorsal root |
| Nociception enters through what? | Lateral portion of the dorsal root |
| What are the 4 parks of the spinothalamic tract? | Discriminative pain Temperature Crude touch Pressure |
| What does discriminative pain tell you? | Type and location of pain |
| What is the primary nociceptive pathway? | Discriminative pain |
| What is the spinothalamic tract part of? | The anterolateral system |
| What two parts of the spinothalamic tract come off the lateral portion of the anterolateral system? | Discriminative pain Temperature |
| What two parts of the spinothalamic tract come off the anterior portion of the anterolateral system? | Crude touch Pressure |
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