Chapter 21 Notes Flashcards
Is it an unpleasant sensation caused by noxiousness?
(injurious to physical health) stimulation of the sensory nerve endings
Definitions of Pain?
Is an unpleasant sensory and emotional experience associated with actual or protein tissue damage or describe in terms damage
Referred pain?
Is felt a site other than the injury or disease organ or part of the body
Acute Pain ?
is intense and of short duration usually lasting less than 6 months
Chronic Pain ?
Generally is characterized as pain lasting longer than 6 months
Fatigue,sleep disturbance and depression may act in this type of ?
Synergistic relationship in which actions of two or more substance or organs achieve an effect that cannot be achieved by individual substance or organ
The gate control theory ?
of pain suggests that pain impulses are regulated and even blocked by gating mechanism locate along the central nervous system
The body produces morphine-like substance called ?
Endorphins potent polypeptides composed of many amino acid found in the pituitary gland and other area of CNS
Transcutaneous electric nerve stimulation?
A special pain relief system (TENS ),
-entails the use of a pocket -sized , battery
- operated device that provides a continuous , mild electric current to the skin via electrodes attached to a stimulator by flexible wires
-invasive means that enters the body
Nonopioid analgesics ?
Acetaminophen and nonsteroidal antiinflammatory drugs (NSAIDs ) the nonopioid analgesics are the most widely available and frequently used analgesic group
-available without any prescription such aspirin and ibuprofen
Opioid analgesics ?
-such morphine ,meperidine
-act on higher centers of the brain to modify perception and reaction to pain
-Opioids decrease the perception of pain by binding to pain receptor sites in the CNS.
-Tolerance and addiction opioid tolerance and physiological dependence are usually short terms
-preventing and managing opioid -induced constipations
Adminstrains routes for analgesics ?
-The IV route is best for administration of opioid analgesics after major surgery.
-This route provides a rapid onset of pain relief and best manages escalating pain.
-Intramuscular administration of opioids is associate wife fluctuations absorption
Patient-controlled analgesia?
A drug delivery system called patient-controlled analgesia (PCA) allows patients to self-administer analgesics whenever needed.
Epidural analgesia?
-Another method of delivery of analgesia is the insertion of an epidural catheter and the infusion of opiates into the epidural space .
-Contain is a “ potential “ space ( there is no free - flowing fluid in ing blood vessels , fat , and nerves , the epidural space it ) between the walls of the vertebral canal and the dura mater of the spinal cord
-diffuse slowly
There are three methods of administering epidural analgesia?
by bolus doses , by continuous infusion , and by patient - controlled epidural analgesia
With the visual analog scale ?
the patient marks a spot on a horizontal line to indicate pain intensity (intensity increases as the line moves from left to right)
Drugs used for epidural analgesia are?
Morphine,fentanyl and hydromorphone
-side effect including urinary retention postural hypotension,pruritus ,nausesa ,vomiting and respiratory depression
-controlling acute pain during labor and for relieving chronic pain,such as patients with advanced cancer
Elastomeric pumps ?
-pains balls are used to administer local anesthetic medications
-medication inside the balls -administered through small catheter that has been placed beneath the skin during a surgical procedure
-average time single pump to be used 2 to 5 days -removed easily patient and caregiver
With the visual analog scale ?
the patient marks a spot on a horizontal line to indicate pain intensity (intensity increases as the line moves from left to right)
Objective sign of pain physiologic signs ?
Pulse: Increased rate
Respirations: Increased depth and frequency Blood pressure: Increased systolic and diastolic The body seeks equilibrium. In an hour or less, vital signs usually return to what they were previously , even if the patient is still in severe pain .
Continuous severe pain sometimes causes vital signs to increase again from time to time, but they rarely remain elevated . Diaphoresis , pallor Dilated pupils Muscle tension (face , body) Nausea and vomiting (if pain is severe)