Pain Flashcards
Pain: 3 important principles
Patient is always believed- pain is real even if the cause is unknown.
A nurse who Suspects pain when a patient denies it must explore the concern with the client.
Perception is reality
Chronic pain
Usually persists at least six months (not a hard and fast rule)
Constantly or intermittently over a period of time
Assessing for pain
Location intensity quality pattern precipitating factors alleviating factors associated symptoms
Nocicepters
Transmit pain
Bradykinin
One of a group of endogenous (produced by body)proteins that act on nociceptor nerve endings. directly activates the nociceptors and causes the release of inflammatory chemicals, such as histamine.
Causes vasodilation and increases capillary permeability resulting in redness and tender tissues
Substance P
Chemical that increases the inflammatory response and acts on blood vessels in the damaged area to release chemicals that contribute to the conduction of nociception.
Breakthrough pain
Pain that occurs beyond the chronic pain already being treated by appropriate analgesics
Difference between:
neuropathic pain and
somatic pain
neuropathic pain- caused by damage to peripheral nerves or to CNS
somatic pain- pain that is localized and arises from bone,joint, muscle or connective tissue
What could explain why people feel different amounts of pain for similar pain stimuli?
The presence of enkephalins and endorphins.
Anxiety can affect levels.
How is absorption and metabolism of medications altered in Elderly?
Decreased liver, kidney and GI function.
Watch for toxicity.
Metabolism is slowed and elderly may obtain more pain relief for a longer period of time.
Smaller doses are required.
What does a nurse do if pain scale number reported is not matching the external appearance of pain?
Example patient says pain is 10 but is smiling and moving easily. OR patient says 2 and is crying and guarding.
Educate patient on pain scale system.
What other problem should be assessed for in chronic pain patients?
Depression
What is the rationale for a TENS?
Block painful stimuli traveling over small nerve fibers.
How is pain determined in a Patient?
McCaffery’s definition
“Pain is whatever the person says it is.”
What is extended gate theory?
Theory proposes that Information is processed in neuromatrix from which a pattern emerges called a neurosignature. The pattern changes when a limb is removed and then is interpreted as a painful limb.