2M RLE Flashcards
are sensory receptors that detect signals from the damaged tissue.
Nociceptors or Pain receptors
sensitive to intense mechanical stimulation. Example: pliers pinching skin
Mechanosensitive nociceptors
sensitive to extreme heat and cold
Thermosensitive nociceptors
sensitive to noxious stimuli of mechanical, thermal, or chemical nature.
Polymodal nociceptors
THREE TYPES of nociceptors
Mechanosensitive nociceptors
Thermosensitive nociceptors
Polymodal nociceptors
Physiologic processes involved in pain
transduction, transmission,
perception, and modulation
mechanical, thermal, or chemical stimulus results in tissue injury or damage stimulating the nociceptors.
TRANSDUCTION
Noxious stimuli initiate a painful stimulus that results in an inflammatory process leading to the release of cytokines and neuropeptides from circulating leukocytes, platelets, vascular endothelial cells, immune cells, and cells from within the peripheral nervous system.
TRANSDUCTION
initiated by this inflammatory process, resulting in the conduction of an impulse in the primary afferent neurons to the dorsal horn of the spinal cord.
TRANSMISSION
neurotransmitters are released and concentrated in the substantia gelatinosa and bind to specific receptors.
TRANSMISSION
emotional status affects directly the level of pain perceived and thus, reported by clients.
PERCEPTION
The hypothalamus and limbic system are responsible for the rational interpretation and response to pain.
PERCEPTION
changes or inhibits the pain message relay in the spinal cord. The descending modular pain pathways either increase or inhibit pain transmission.
MODULATION
unpleasant sensory and emotional experience associated with actual and potential tissue damage, or as explained in terms of such damage or both
Pain
Classifications of pain
CAUSE
DURATION AND ETIOLOGY
LOCATION
CAUSE
Nociceptive pain
Neuropathic pain
Inflammatory pain
a kind of pain brought on by physical tissue injury. It’s a typical sign of an external injury. It is frequently described as a sharp, achy, or sharp discomfort
Ex. stubbing your toe, hitting your elbow, you trip and twisting your ankle, or you scratch up your knee.
Nociceptive pain
is a condition that develops when the neurological system is damaged or dysfunctional as a result of illness or injury. Usually, the pain is described as having a pins-and-needles sensation or as feeling like it burning, shooting, or stabbing.
Ex. diabetes, amputation, stroke
Neuropathic pain
such as migraine, rheumatoid arthritis, fibromyalgia, and back and shoulder pain. Inflammatory pain can intensify the pain experience.
Ex. Heat, Swelling, Tenderness, skin rash
Inflammatory pain
lasts less than 30 days. Anytime the underlying cause is identified and treated, it disappears on its own. When not properly managed, it can affect not just the immune system but also sleep, emotions, oxygen levels, and healing.
Ex. broke bones, childbirth, burns, and cuts
Acute pain
is more time-consuming in comparison to acute pain Persistent nonmalignant pain is pain brought on by an illness or an injury that lasts longer than intended, 3 to 6 months or longer. With the passage of time, the situation frequently worsens and becomes very risky.
Ex. Joint pain, Tumor
Chronic nonmalignant pain
DURATION AND ETIOLOGY
Acute pain
Chronic nonmalignant pain
Cancer pain
Intractable pain