Pain and Comfort Study Notes
Pain and Comfort Overview
Jen Brearley, MSN, BSN, RN
Pain Intensity Levels
Low
Moderate
High
Statistics on Pain
1 in 4 Americans experience significant pain.
1 in 3 older adults report pain that interrupts normal functioning.
More than half of hospitalized patients die in moderate to severe pain.
Most commonly reported types of pain:
Headache
Low back pain (LBP)
Joint pain
Neck pain
Understanding Pain
Definition of Pain: "Pain is whatever the patient says it is, and is wherever they say it is."
Unpleasant sensory/emotional experience.
Can have destructive effects.
Protective mechanism, warning of potential injury.
Multidimensional experience, often referred to as the 5th vital sign.
The Pain Cycle
Cycle of Pain Elements:
Reduced social interaction/isolation
Anger, anxiety, fear, and panic
Activity avoidance leading to deconditioning
Physical pain often worsened by decreased activity
Increased perception of pain and lowered pain threshold.
Poor mood and possible depression
Lack of sleep contributing to the cycle.
Factors Affecting Sensory Function
Key Influencing Factors:
Age
Culture
Disease process
Medications
Stress
Personality and lifestyle
Physiological Factors:
Chronic inflammation
Stress leading to maladaptive neuroplasticity
Neuroendocrine dysfunction
Cognitive and Behavioral Factors:
Pain anticipation, hypervigilance, and rumination
Cognitive distortions like pain catastrophizing
Environmental Factors:
Stressors from surroundings
Lifestyle habits and behaviors
Social support or isolation
Classification of Pain
By Origin:
Cutaneous/Superficial: Localized pain (e.g., minor burn, cut).
Deep Somatic: Pain from muscles, bones, joints (typically poorly localized).
Visceral: Pain from internal organs (heart, lungs, bladder).
Radiating/Referred: Pain that travels from one area to another.
Phantom: Pain felt in a limb that has been amputated.
Psychogenic: Pain influenced by psychological factors.
Common Areas of Referred Pain
List of Referred Pain Locations:
Liver and gallbladder
Lung and diaphragm
Heart
Stomach
Pancreas
Small intestine
Ovaries
Colon
Appendix
Kidney
Ureter
Urinary bladder
Prevalent Forms of Neuropathic Pain
Common Types:
Diabetic Peripheral Neuropathy (DPN)
Postherpetic Neuralgia (PHN)
Trigeminal Neuralgia
HIV-associated Pain
Post-stroke Pain
Phantom Limb Pain
Multiple Sclerosis
Reflex Sympathetic Dystrophy
Spinal Cord Injury Pain
Cancer-related Pain
Typical Peripheral Neuropathy Symptoms
Symptoms Include:
Loss of sensation (numbness)
Freezing sensations
Hyper Sensitivity
Sharp jabbing pain
Burning sensations
Tingling
Further Pain Classification
By Cause:
Nociceptive Pain: Includes visceral and somatic types.
Neuropathic Pain: Caused by nerve damage or dysfunction.
By Duration:
Acute Pain: Lasts up to 6 months.
Chronic Pain: Lasts longer than 6 months.
Intractable Pain: Chronic pain that is resistant to treatment.
Nociceptive Pain
Types:
Somatic Pain: Originates from the musculoskeletal system, typically well localized.
Examples: Gout, osteoarthritis, trauma-induced pain.
Visceral Pain: Originates from internal organs, often referred.
Examples: Dysmenorrhea, gastritis, appendicitis.
Nociceptive vs. Neuropathic Pain
Nociceptive Pain: Involves special nerve endings called nociceptors that send pain signals to the central nervous system.
Neuropathic Pain: Results from dysfunction in the nervous system or direct nerve damage.
PQRST Pain Description Model
Components:
P: Provocation - Triggers or alleviates pain?
Q: Quality - What does the pain feel like? (e.g., sharp, dull)
R: Region - Where is the pain? Does it radiate?
S: Severity - Intensity on a scale of 0-10?
T: Timing - When does it occur? Duration?
Physiology of Pain Transduction
Process of Pain Transduction:
Transduction: Activation of nociceptors via:
Mechanical stimuli
Thermal stimuli
Chemical stimuli (e.g., heart attack-ischemic pain)
Transmission: Pain signal travels through the spinal cord to the brain.
Modulation: Neurons release neurotransmitters to modify pain sensation.
Physiology of Pain Transmission
Transmission Pathways:
Involves different fibers:
A-Delta fibers: Responsible for fast, sharp pain.
C fibers: Responsible for slow, aching pain.
Pain Perception and Modulation
Pain Perception: Recognizing pain through the brain, involves:
Pain threshold
Pain tolerance
Hyperalgesia (increased pain sensitivity)
Pain Modulation: Adjusting pain perception through:
Endogenous analgesia system
Endogenous opioids
Gate Control Theory
Factors Influencing Pain Response
Physical Factors:
Emotions
Past pain experiences
Developmental stage
Communication skills
Cognitive impairments
Psychological Factors:
Pain perception and coping skills
Catastrophizing and fear avoidance
Depression
Biological Factors:
Pain intensity and physical health
Sleep disturbances and medication interactions
Social Factors:
Work, economic implications, and cultural context.
Nonverbal Pain Cues
Examples of Nonverbal Cues:
Decreased activity
Crying
Grimacing
Frowning
Moaning
Irritability
Pain Scales
Types of Pain Scales:
Subjective Pain Scale (0-10 scale)
Visual Analogue Scale (VAS)
Numeric Rating Scale (0-10 scale)
Wong-Baker FACES Pain Rating Scale
Simple Descriptive Pain Scale
Comfort Scale
Used to assess pain in non-communicative patients (including infants and children).
Measurements: Includes alertness, calmness, respiratory response, and degree of movement (scored 9-45).
Limitations of Pain Scales
Fluctuating subjectivity and reliability
Lack of standardization across different scales
Cultural and communication barriers
Difficulty in interpreting different pain types.
Pain Assessment Tools
Key Assessment Models:
SOCRATES: Onset, Character, Radiation, Alleviation, Timing, Severity.
OLDCARTS: Onset, Location, Duration, Character, Aggravating/Alleviating, Radiation, Timing, Severity.
Body System Reactions to Pain
Effects of Unrelieved Pain:
Impacts on cardiovascular, respiratory, gastrointestinal, endocrine, musculoskeletal, and psychological systems.
Can lead to elevated blood pressure, increased heart rate, impaired wound healing, and anxiety.
Psychophysiological Responses to Pain
Sympathetic Responses:
Increased alertness, elevated hr/bp, dilated pupils for heightened sensory perception, and blood redistribution away from the digestive system.
Parasympathetic Responses:
Slow breathing, decreased heart rate, and withdrawal from stimuli during deep/prolonged pain.
Psychological Responses to Pain
Common Responses:
Anger, anxiety, depression, exhaustion, fear, hopelessness, irritability.
Cognitive Factors: Influence perception of pain including attention, distraction, coping mechanisms, and social support.
Pain Clinics and Management Interventions
Medications:
Non-opioid analgesics like NSAIDs and acetaminophen.
Narcotics such as morphine, hydrocodone, oxycodone for breakthrough pain.
Adjuvant analgesics employed for neuropathic pain.
Interventions:
Psychological therapy: Cognitive behavioral therapy, biofeedback, support groups.
Physical Therapy and Non-Western approaches like acupuncture.
Nursing Interventions for Pain Management
Pain Management Strategies:
Prioritize effective, least invasive methods.
Utilize both non-pharmaceutical and pharmaceutical interventions.
Involve patient and family in care plan.
Special Considerations for Patients:
Special attention required for those with cognitive impairments or advanced dementia (using scales like PAINAD).
Conclusion
Effective pain management is multifaceted, hinging on accurate assessment, understanding physiological responses, psychological support, and multi-modal treatment approaches.