Pain management Flashcards
it is an unpleasant, subjective sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage.
Pain
What are the Theories of Pain?
1) Pattern Theory
2) Specificity Theory
3) Gate Control Theory
4) Affect Theory
5) Parallel Processing Model
It states that there are
specific nerve receptors for
particular stimuli.
Specificity Theory
It states that pain is
perceived whenever the
stimulus is intense enough
Pattern Theory
It conceptualizes that there is a gate
in the spinal cord called substantia
gelatinosa cells in the dorsal horn
Gate Control Theory
In Gate Control Theory, what stimulate
impulses in large nerves which in
turn close the gate to back pain?
Back massage
It avers that the pain
is emotional
Affect Theory
it believes that the
physiologic or
neurologic deciphering
of the pain sensation
and the cognitive
emotional properties
occur along different
nerve fibers
Parallel Processing Model
What is the physiology of pain?
1) Transduction
2) Transmission
3) Perception
4) Modulation
What type of Nerve fiber that has the characteristics below:
- Conduct impulses rapidly
- Sharp, pricking pain
- Superficial, somatic pain
A-Delta Fibers
(Large, Myelinated)
What type of Nerve fiber that has the characteristics below:
- Conduct impulses slowly
- Dull, aching, burning sensation
- Deep somatic and visceral pain
C Fibers
(Small, Unmyelinated)
What is the gate in the spinal cord that is also in the dorsal horn?
substantia
gelatinosa cells
What are the Pain-producing stimuli?
Thermal,
Chemical or,
Mechanical stimuli
causes cellular damage
leading to a release of
neurotransmitters
Stimuli
determines the pain
intensity and location
Somatosensory cortex
determines how the person perceives pain
Association cortex (mainly the limbic system)
Are released the moment pain is perceived by the brain
Neuromodulators
deliver sensory impulses to the spinal cord, where they synapse with spinal
motor neurons
Delta A fibers
What are the types of Neurotransmitters (Excitatory)?
- PROSTAGLANDINS
- BRADYKININ
- SUBSTANCE P
- HISTAMINE
- SEROTONIN
- Released from plasma that escapes from neighboring blood vessels at the location of tissue
damage - Attaches to receptors on peripheral nerves, amplifying sensations of pain
- Attaches to cells that initiate the cascade leading to the production of prostaglandins
BRADYKININ
- Produced through the breakdown of phospholipids found in cellular membranes
- Increase pain sensitivity
PROSTAGLANDINS
- Discovered within the pain neurons of the dorsal horn (excitatory peptide)
- Required for the transmission of pain signals from the periphery to higher centers in the
brain - Induces vasodilation and edema
SUBSTANCE P
- Released from both the brainstem and dorsal horn to suppress pain transmission
SEROTONIN
- Generated by mast cells, leading to
capillary dilation and increase in capillary permeability
HISTAMINE
- Naturally occurring sources of
morphine-like substances within the
body - Triggered by stress and pain
- Found in the brain, spinal cord, and
gastrointestinal tract - Induce analgesia when they fasten to
opiate receptors in the brain - Found in increased levels in people
with less pain than others with the
same injury
NEUROMODULATORS (Inhibitory)
Low to moderate intensity pain or
superficial pain
- Trigger the fight or flight response
- Stimulate the sympathetic nervous
system
Severe , deep, or continuous pain
- Activate the parasympathetic
nervous system
What are the signs of pain?
- Teeth clenching
- Holding the affected area
- Adopting a hunched posture
- Grimace
What are the types of pain in terms of location?
- SUPERFICIAL OR CUTANEOUS
PAIN - DEEP OR VISCERAL
- REFERRED
- RADIATING
- Results from stimulation of the
skin - Short duration and localized
- Sharp sensation
- Examples: small cuts, insect bites
SUPERFICIAL OR CUTANEOUS
PAIN
- Perception of pain in non-affected
regions - Pain is experienced in a body part
that is separate from the actual
source of pain, and it can take on
various characteristics
REFERRED
- Results from stimulation of internal
organs - Spreads out and radiates in multiple
directions - Lasts longer than superficial pain
- Sharp, dull, or distinct to the organ
involved
DEEP or VISCERAL
crushing or
squeezing chest
pain
Myocardial
Infarction
severe and persistent
abdominal pain
Appendicitis
Intense pain
in the upper abdomen
Pancreatitis
chest pain or discomfort
that may radiate to
the left arm or jaw
Angina
pain radiating from the lower
back to the groin area
Kidney stones
originates in the
lower back or
buttock and
radiates down the
back of the leg,
often caused by
compression or
irritation of the
sciatic nerve
Sciatica
radiates from one side of the head and
may extend to the forehead, temples, or back of the head
Migraine Headache
- The feeling of pain spreading from
the original injury site to a different
area of the body - The sensation of pain moving or
coursing along a specific body part - Intermittent or constant
RADIATING
What are the types of pain in terms of duration?
- ACUTE / TRANSIENT PAIN
- CHRONIC / PERSISTENT NON-
CANCER PAIN - CHRONIC EPISODIC PAIN
- Protective
- Has a known cause
- Short duration, less than 3 months
- Reduced damage to tissues
- Eventually resolves, whether or not
medical intervention is provided, once the affected area is healed
ACUTE / TRANSIENT PAIN
What is the Primary Nursing Goal in relieving Acute/Transient Pain?
Provide pain relief
- Not protective
- No purpose
- Lasts longer than 6 months
- Constant or recurring with mild to severe
intensity - No known cause
CHRONIC / PERSISTENT NON-
CANCER PAIN
- Occurs sporadically over extended periods of time
- May lasts for hours, days or weeks
- Example: migraine headaches, pain
associated with sickle cell disease
CHRONIC EPISODIC PAIN
How do you measure the intensity of pain?
By using pain assessment scales
What are the types of pain assessment scales?
- Numerical Rating Scale
- Verbal Rating Scale
- Visual Analog Scale
- Face Scale
What are the types of Pain in terms of Etiology/Pathology?
- CANCER PAIN
- PAIN BY INFERRED PATHOLOGICAL
PROCESSES
is experienced when an
intact, properly functioning nervous system sends signals that tissues are damaged, requiring attention and proper care.
Nociceptive pain
pain arises from the bone, joint, muscle, skin or connective tissue; typically characterized by a dull or pulsating sensation and highly localized
Somatic (musculoskeletal)
pain that originates from internal organs like the gastrointestinal tract and pancreas.
Visceral (internal organ)
What are the types of Centrally Generated Pain?
- Differentiated pain
- Sympathetically Maintained Pain
damage to either the peripheral or central nervous system
Differentiated pain
injury to the central nervous system
Burning pain below the level of spinal cord
injury to the peripheral nervous system
Phantom pain