Understanding Pain Management and Assessment

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Questions and Answers

The historical aim of pain management was to reduce pain perception.

False (B)

Psychological intervention forms are a second-level approach in acute pain management.

True (A)

Chronic pain can be influenced by interactions within the social environment.

True (A)

The five D's of chronic pain management do not include drug misuse.

<p>False (B)</p> Signup and view all the answers

Distraction and relaxation are coping skills taught in pain management.

<p>True (A)</p> Signup and view all the answers

Chronic throbbing pain is mediated by A beta fibres.

<p>False (B)</p> Signup and view all the answers

Gate Control Theory of Pain suggests that psychological influences affect pain perception.

<p>True (A)</p> Signup and view all the answers

Anxiety and depression can increase pain tolerance.

<p>False (B)</p> Signup and view all the answers

Focusing on pain can reduce the overall pain experience.

<p>False (B)</p> Signup and view all the answers

Expectations of relief from pain may lead to the placebo effect.

<p>True (A)</p> Signup and view all the answers

A-beta fibres are involved in transmitting information about physical damage.

<p>False (B)</p> Signup and view all the answers

Cognitions related to pain can influence how pain is experienced.

<p>True (A)</p> Signup and view all the answers

The gate control mechanism operates only through physical signals without psychological influence.

<p>False (B)</p> Signup and view all the answers

Long-term drug use tends to open the pain gate.

<p>True (A)</p> Signup and view all the answers

Massage is a factor that tends to close the pain gate.

<p>True (A)</p> Signup and view all the answers

Engaging in enjoyable activities can open the pain gate.

<p>False (B)</p> Signup and view all the answers

Anxiety and depression are factors that can close the pain gate.

<p>False (B)</p> Signup and view all the answers

Pain assessment is subjective and relies on patient reporting.

<p>True (A)</p> Signup and view all the answers

Distraction techniques can help close the pain gate.

<p>True (A)</p> Signup and view all the answers

Poor sleep hygiene tends to close the pain gate.

<p>False (B)</p> Signup and view all the answers

Optimism can be a factor that helps close the pain gate.

<p>True (A)</p> Signup and view all the answers

Cognitive strategies are focused on altering beliefs about the unmanageability of pain.

<p>True (A)</p> Signup and view all the answers

Withdrawal of attention to pain behaviours is a reinforcement strategy.

<p>False (B)</p> Signup and view all the answers

Providing analgesic medication in response to pain behaviours is a common strategy in pain management programmes.

<p>False (B)</p> Signup and view all the answers

Multidisciplinary teams for pain management may include psychologists and counsellors.

<p>True (A)</p> Signup and view all the answers

Relaxation techniques are intended to target mental stress rather than physical pain.

<p>False (B)</p> Signup and view all the answers

The prevalence of chronic pain in Ireland is 35.5%.

<p>True (A)</p> Signup and view all the answers

Chronic pain is defined as pain that lasts for at least three months.

<p>False (B)</p> Signup and view all the answers

The costs of pain in Europe amount to €200 billion annually.

<p>True (A)</p> Signup and view all the answers

Pain is solely a physical sensation and does not involve emotional factors.

<p>False (B)</p> Signup and view all the answers

Acute pain is typically a long-lasting response to injury.

<p>False (B)</p> Signup and view all the answers

A delta fibres transmit information about dull, throbbing pain.

<p>False (B)</p> Signup and view all the answers

The gate-control theory is one approach to understanding pain.

<p>True (A)</p> Signup and view all the answers

The gate control theory of pain was proposed by Ron Melzack and Pat Wall.

<p>True (A)</p> Signup and view all the answers

Lisa experienced pain in her left knee after a successful hip surgery.

<p>True (A)</p> Signup and view all the answers

C polymodal fibres are responsible for transmitting sharp pain.

<p>False (B)</p> Signup and view all the answers

The majority of doctor consultations in the US are unrelated to pain.

<p>False (B)</p> Signup and view all the answers

Peter Gøtzsche states that prescription drugs are the leading cause of death.

<p>False (B)</p> Signup and view all the answers

A beta fibres inhibit the perception of pain when activated.

<p>True (A)</p> Signup and view all the answers

An injury can occur without the experience of pain.

<p>True (A)</p> Signup and view all the answers

Approximately 20% of the adult population in Europe is affected by pain.

<p>True (A)</p> Signup and view all the answers

Pain is only experienced during the healing process.

<p>False (B)</p> Signup and view all the answers

Pain management programmes often rely exclusively on pharmacological interventions.

<p>False (B)</p> Signup and view all the answers

Cognitive strategies in pain management focus on changing unhelpful thought patterns related to pain.

<p>True (A)</p> Signup and view all the answers

Reinforcement of adaptive behaviours includes encouraging patients to ignore pain sensations.

<p>True (A)</p> Signup and view all the answers

Multidisciplinary teams in pain management consist solely of medical doctors.

<p>False (B)</p> Signup and view all the answers

Distraction techniques are not typically used in pain management strategies.

<p>False (B)</p> Signup and view all the answers

The modern aim of pain management includes decreasing drug reliance.

<p>True (A)</p> Signup and view all the answers

Teaching coping skills is considered a primary strategy for managing chronic pain.

<p>False (B)</p> Signup and view all the answers

In chronic pain management, tertiary gain refers to the expressions of sympathy received from others.

<p>False (B)</p> Signup and view all the answers

Patient controlled analgesia (PCA) is an example of increasing patient control in pain management.

<p>True (A)</p> Signup and view all the answers

The five D's of chronic pain management do not include dependency on others.

<p>False (B)</p> Signup and view all the answers

Appropriate medication tends to open the pain gate.

<p>False (B)</p> Signup and view all the answers

Inactivity and poor physical fitness can lead to the opening of the pain gate.

<p>True (A)</p> Signup and view all the answers

Engaging in enjoyable activities tends to close the pain gate.

<p>True (A)</p> Signup and view all the answers

Long-term alcohol use is a factor that tends to close the pain gate.

<p>False (B)</p> Signup and view all the answers

Laughter and humor can help close the pain gate.

<p>True (A)</p> Signup and view all the answers

Stress and anxiety are considered cognitive factors that open the pain gate.

<p>False (B)</p> Signup and view all the answers

Cognitive strategies in pain management aim to alter perceptions about pain.

<p>True (A)</p> Signup and view all the answers

A patient's understanding of pain primarily depends on biological factors alone.

<p>False (B)</p> Signup and view all the answers

Cognitive-behavioural principles can be used to provide education on pain self-management.

<p>True (A)</p> Signup and view all the answers

Multidisciplinary perspectives are unnecessary for the management of chronic pain.

<p>False (B)</p> Signup and view all the answers

Pain assessment tools are objective and do not rely on the patient's own perception.

<p>False (B)</p> Signup and view all the answers

Education and skills training are key components provided to patients in pain management programs.

<p>True (A)</p> Signup and view all the answers

Anti-pain fibres are known as C polymodal fibres.

<p>False (B)</p> Signup and view all the answers

The cost of pain in Europe is estimated to be around €200 billion annually.

<p>True (A)</p> Signup and view all the answers

Acute pain is a maladaptive response to injury or disease.

<p>False (B)</p> Signup and view all the answers

C polymodal fibres conduct information about sharp pain quickly.

<p>False (B)</p> Signup and view all the answers

Engaging in activities that promote relaxation can help inhibit the experience of pain.

<p>True (A)</p> Signup and view all the answers

The gate control theory suggests that pain perception can be influenced by both physical and psychological factors.

<p>True (A)</p> Signup and view all the answers

Pain is solely a psychological phenomenon and does not involve biological factors.

<p>False (B)</p> Signup and view all the answers

Phantom limb pain is a type of pain that occurs after healing from an injury.

<p>True (A)</p> Signup and view all the answers

The success of multimodal treatments for pain indicates that a singular approach is generally sufficient.

<p>False (B)</p> Signup and view all the answers

Lisa experienced pain in her left knee prior to her hip surgery.

<p>False (B)</p> Signup and view all the answers

Peter Gøtzsche has indicated that prescription drugs are a leading cause of death.

<p>True (A)</p> Signup and view all the answers

The adult population in Europe affected by pain is approximately 50%.

<p>False (B)</p> Signup and view all the answers

Acute pain is a long-lasting response to injury.

<p>False (B)</p> Signup and view all the answers

Chronic pain can exist without any current tissue damage.

<p>True (A)</p> Signup and view all the answers

The modern aim of pain management is to eliminate pain completely.

<p>False (B)</p> Signup and view all the answers

In pain management, hypnosis is categorized as a primary intervention technique.

<p>False (B)</p> Signup and view all the answers

Secondary gain in chronic pain refers to the cessation of aversive consequences.

<p>False (B)</p> Signup and view all the answers

The term 'five D's' includes dependency on medication as one of its components.

<p>False (B)</p> Signup and view all the answers

Pain management decisions should respect a patient's attempts at self-management.

<p>True (A)</p> Signup and view all the answers

A delta fibres are slow conducting and are responsible for transmitting sharp pain.

<p>False (B)</p> Signup and view all the answers

The gate-control theory suggests that pain perception is regulated solely by physiological mechanisms.

<p>False (B)</p> Signup and view all the answers

A beta fibres are responsible for transmitting dull, throbbing pain sensations.

<p>False (B)</p> Signup and view all the answers

The economic cost of chronic pain in Europe is estimated at approximately €200 billion annually.

<p>True (A)</p> Signup and view all the answers

Pain is only experienced as a direct response to physical injury or disease.

<p>False (B)</p> Signup and view all the answers

Chronic pain often leads to increased use of social welfare benefits.

<p>True (A)</p> Signup and view all the answers

Acute pain is usually maladaptive and lasts for extended periods.

<p>False (B)</p> Signup and view all the answers

Anxiety and stress can open the pain gate.

<p>True (A)</p> Signup and view all the answers

Long-term drug use is a factor that tends to close the pain gate.

<p>False (B)</p> Signup and view all the answers

Relaxation training is considered a physical factor that closes the pain gate.

<p>False (B)</p> Signup and view all the answers

Engaging in activities that promote laughter and humor can help close the pain gate.

<p>True (A)</p> Signup and view all the answers

Poor sleep is a factor that tends to close the pain gate.

<p>False (B)</p> Signup and view all the answers

Distraction is a cognitive strategy that can help close the pain gate.

<p>True (A)</p> Signup and view all the answers

Excessive pacing of activities tends to close the pain gate.

<p>False (B)</p> Signup and view all the answers

Chronic throbbing pain is mediated by C polymodal fibres.

<p>True (A)</p> Signup and view all the answers

A beta fibres are primarily responsible for transmitting sharp pain sensations.

<p>False (B)</p> Signup and view all the answers

Psychological influences can enhance the experience of pain according to the Gate Control Theory.

<p>True (A)</p> Signup and view all the answers

Cognitions such as beliefs about pain tolerance can have no effect on pain perception.

<p>False (B)</p> Signup and view all the answers

The gate control mechanism involves only physical damage signals without any cognitive or emotional components.

<p>False (B)</p> Signup and view all the answers

Expectations of relief from pain can create a self-fulfilling prophecy.

<p>True (A)</p> Signup and view all the answers

A-beta fibres are always present in pain transmission pathways.

<p>False (B)</p> Signup and view all the answers

Anxiety and depression are factors that can enhance pain tolerance.

<p>False (B)</p> Signup and view all the answers

Pain management programs only focus on physical aspects and do not consider psychological factors.

<p>False (B)</p> Signup and view all the answers

Education on pain physiology is an essential component of cognitive-behavioral therapy for managing pain.

<p>True (A)</p> Signup and view all the answers

Cognitive strategies in pain management exclusively focus on physical rehabilitation techniques.

<p>False (B)</p> Signup and view all the answers

Chronic pain is universally defined as pain persisting for at least six months.

<p>False (B)</p> Signup and view all the answers

Analgesic medication is typically administered at unscheduled times in pain management programmes.

<p>False (B)</p> Signup and view all the answers

Pain perception is solely a biological response without influence from social or cultural factors.

<p>False (B)</p> Signup and view all the answers

The Gate Control Theory of Pain suggests that emotional states can modulate pain perception.

<p>True (A)</p> Signup and view all the answers

Withdrawal of attention from pain behaviors can lead to an increase in maladaptive coping strategies.

<p>False (B)</p> Signup and view all the answers

Multidisciplinary teams in pain management can include various professionals such as doctors, psychologists, and occupational therapists.

<p>True (A)</p> Signup and view all the answers

Distraction techniques are primarily utilized to enhance emotional coping rather than reducing the perception of pain.

<p>False (B)</p> Signup and view all the answers

Flashcards

Pain definition

An unpleasant sensory and emotional experience associated with actual or potential tissue damage.

Pain as a complex phenomenon

Pain is influenced by biological, psychological, and social factors.

Pain without injury

Experiencing pain without physical damage to tissues.

Injury without pain

Physical damage to tissues but no pain sensation.

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Gate-Control Theory

Pain signals are modulated by the nervous system, which can either block them or allow them to be felt.

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Pain assessment

Methods used to evaluate pain levels or characteristics.

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Psychological pain management

Using psychological approaches to control or reduce pain.

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Pain's social impact

Pain can affect a person's social life and relationships significantly.

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Chronic Pain Prevalence

Chronic pain affects roughly 35.5% of the Irish population, a significantly higher rate than in the UK (48%).

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Chronic Pain Impact

Chronic pain leads to longer hospital stays, lost work days, and increased reliance on social welfare benefits, causing substantial financial and social burden.

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Acute Pain

A temporary pain response to injury or illness, typically lasting a limited time. It is a useful biological response.

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Chronic Pain

Pain that persists for six months or longer and often doesn't respond to typical treatments, often a maladaptive response.

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Nociceptors

Nerves that transmit pain sensations from the injury site to the spinal cord.

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A delta fibers

Myelinated pain nerves that detect strong, immediate tissue damage, leading to quick sharp pain.

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C fibers

Non-myelinated pain nerves responsible for dull, throbbing pain, experienced for a longer duration.

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Gate Control Theory of Pain

A theory suggesting that the experience of pain is modulated by the interaction of different types of nerve fibers in the spinal cord.

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C-polymodal fibers

Sensory nerve fibers that transmit chronic throbbing pain signals.

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Spinal cord gates

Points in the spinal column where pain signals are regulated.

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Psychological influences on pain perception

Cognitive and emotional factors can significantly impact how a person experiences pain.

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Pain Tolerance

The intensity of pain a person can endure before it becomes overwhelming or unbearable.

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Pain perception

The subjective experience of pain, influenced by physical, emotional, and psychological factors.

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Central nervous system (CNS) nerve fibers

Nerve fibers that transmit information from the brain to the spinal cord, impacting the pain experience.

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Pain Management Aim - Past

Historically, pain management aimed to completely eliminate pain.

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Pain Management Aim - Present

Modern pain management focuses on reducing pain perception, improving coping abilities, increasing functional capacity, minimizing drug dependence, and respecting self-management efforts.

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Acute Pain Management - First Line

Pharmacological interventions are typically the first line of treatment for acute pain.

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Acute Pain Management - Psychological Interventions

Psychological interventions, like distraction, relaxation and hypnosis, are used to manage acute pain alongside medication.

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Chronic Pain - Primary Gain

Primary gain in chronic pain refers to the reduction of aversive consequences (e.g., work, chores) by expressing pain.

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Behavioral Strategies for Chronic Pain

These techniques use operant conditioning principles aimed at reinforcing healthy behaviors like exercising and minimizing pain-related behaviors. It involves rewarding positive changes and gradually reducing attention towards pain.

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Cognitive Strategies for Chronic Pain

These strategies target the thoughts and beliefs surrounding pain, aiming to help patients challenge negative thinking patterns like catastrophizing and re-framing unhelpful perspectives on the manageability of pain.

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Multidisciplinary Pain Management Programs (PMPs)

These programs bring together a team of healthcare professionals, including doctors, nurses, physiotherapists, psychologists, and occupational therapists, to address chronic pain in a comprehensive way.

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Information Provision in Pain Management

Providing patients with detailed information about their pain and its management can reduce anxiety and empower them to participate in their recovery.

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Relaxation Techniques for Chronic Pain

Relaxation techniques, including guided imagery and deep breathing exercises, can help reduce muscle tension and anxiety, which can contribute to chronic pain.

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Factors That Open The Pain Gate

These include physical factors like injury, inactivity, and substance use, as well as behavioral factors like poor pacing, lack of sleep, and emotional factors like anxiety and stress.

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Factors That Close The Pain Gate

These include physical factors like medication, heat/cold, and massage; behavioral factors like exercise, relaxation training, and sleep hygiene; and emotional factors like laughter, optimism, and engaging in enjoyable activities.

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Pain: What The Patient Says

The subjective nature of pain is highlighted by the phrase 'pain is what the patient says it is.' Pain experiences are personal and unique.

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Objective vs. Subjective Pain

While pain itself is entirely subjective, clinicians can indirectly measure pain by observing signs like facial expressions, body language, and vital signs.

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Mnemonics for Pain Assessment

Using mnemonic devices can help remember and apply pain assessment tools and techniques. These can simplify complex processes.

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Pain Reporting and Pathology

Patient reports of pain are valuable, but they don't always directly correlate with the severity of underlying pathological processes.

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Pain: Complex Phenomenon

Pain is influenced by biological, psychological, and social factors, making it a complex experience.

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Psychological Approaches to Pain Management

These approaches utilize psychological techniques, such as relaxation, mindfulness, or cognitive behavioral therapy, to manage pain effectively.

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The Cost of Pain

Pain places a considerable burden on individuals and society as a whole, impacting healthcare systems, economy, and social well-being.

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Chronic Pain Costs

Chronic pain is costly in terms of extended hospital stays, lost work days, and increased reliance on social welfare benefits.

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Acute vs. Chronic Pain

Acute pain is a short-term response to injury or disease, while chronic pain persists for six months or longer, and often does not respond well to treatment.

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What are nociceptors?

Nociceptors are nerves that transmit pain signals from the injury site to the spinal cord.

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Gate Control Theory: Periphery

The gate control theory suggests that pain signals are modulated at the spinal cord level, influenced by different types of nerve fibers.

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Gate Control Theory: A Beta Fibers

A beta fibers are mechanically sensitive nerve fibers involved in touch and pressure that can inhibit the perception of pain when activated.

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Subjective Pain

Pain is a personal experience that can only be reported by the individual, as its intensity and qualities vary depending on individual perceptions and factors.

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Objective Signs of Pain

While pain itself is subjective, healthcare professionals can look for objective signs such as facial expressions, posture changes, and vital signs to help understand a patient's pain levels.

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Patient Reporting in Pain Assessment

Patients are the primary source of information on their pain. Their reports are crucial for comprehending the overall pain experience, despite not always directly correlating with the severity of underlying pathology.

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Acute Pain: First Line Treatment

For acute pain, pharmacological interventions (medications) are typically the first line of treatment.

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Chronic Pain: Multifactorial Causes

Chronic pain has complex and multifaceted causes, often influenced by interactions within the social environment.

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Chronic Pain: Five D's

Chronic pain can lead to five detrimental outcomes: Dramatisation of complaints, Disuse through inactivity, Drug misuse through over-medicating, Dependency on others, and Distress associated with constant pain.

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Pain Management: Operant Learning

This approach uses operant conditioning to change pain behaviors. It involves rewarding adaptive behaviors like exercise and ignoring pain behaviors, and withdrawing attention or rewards from pain-related actions.

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Pain Management: Cognitive Strategies

These strategies help patients identify and change their negative thoughts and beliefs about their pain, like catastrophising or feeling helpless.

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Pain Management: Relaxation Techniques

Techniques like guided imagery and deep breathing help reduce muscle tension and anxiety, which often contribute to chronic pain.

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Multidisciplinary Approach

Managing chronic pain requires a team of specialists (doctors, psychologists, therapists) working together to address the physical and psychological aspects of pain.

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Factors Influencing Pain

Physical, emotional, and behavioral factors all impact pain perception.

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Prevalence of Chronic Pain

Chronic pain affects a significant portion of the population, with 35.5% of Irish people experiencing it compared to 48% in the UK.

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Types of Nerve Fibers

A delta fibers transmit sharp, immediate pain, C fibers carry dull, throbbing pain, and A beta fibers can inhibit pain signals.

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Pain: Subjective vs. Objective

While pain is a subjective experience, healthcare professionals can look for objective signs such as facial expressions and body language to assess pain levels indirectly.

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Psychological Influences on Pain

Our thoughts and emotions play an important role in how we experience pain. Anxiety, depression, and negative thoughts can make pain feel worse.

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Multidisciplinary Pain Management

This approach combines expertise from various fields, like medicine, psychology, and physical therapy, to provide comprehensive pain management.

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Factors Influencing Pain Perception

Pain experience is influenced by a combination of physical, emotional, and behavioral factors. These can either increase or decrease pain.

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Pain Management Aim - Modern

Contemporary pain management aims to reduce pain perception, improve coping abilities, increase functional capacity, minimize drug dependence, and respect self-management efforts.

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Chronic Pain - 'Five D's'

Chronic pain can lead to five detrimental outcomes: Dramatisation of complaints, Disuse through inactivity, Drug misuse through over-medicating, Dependency on others, and Distress associated with constant pain.

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Pain Management - Psychological Approaches

These approaches use psychological techniques, like relaxation, mindfulness, or cognitive behavioral therapy, to manage pain effectively.

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Chronic Pain: Behavioral Strategies

These strategies use operant conditioning to change pain behaviors. Techniques include reinforcing healthy behaviors like exercise, and ignoring pain-related actions, while withdrawing attention or rewards from pain behaviors.

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Chronic Pain: Cognitive Strategies

These strategies help patients identify and challenge negative thoughts and beliefs about their pain, like catastrophizing their pain or feeling helpless to manage it. The goal is to restructure unhelpful thought patterns.

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Pain Assessment: "Pain is what the patient says it is"

This means that we have to trust what people tell us about their pain, because it's a subjective experience. We can't always measure it objectively.

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How to Assess Pain?

Doctors look at things like facial expressions, body language, and vital signs to get an idea of how much pain someone is in, even though pain is subjective and can't be directly measured.

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Pain Management: Old vs. New

Traditionally, the goal was to completely eliminate pain. Now, we focus on reducing pain, improving coping skills, and helping people live better lives despite their pain.

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Pain Management: Multidisciplinary Approach

Managing chronic pain often requires a team of health professionals like doctors, nurses, therapists, and psychologists, working together to address the physical and psychological aspects of pain.

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What is the bio-psycho-social model of pain?

This model recognizes that pain is influenced by biological (physical injury or disease), psychological (thoughts, emotions, beliefs), and social (cultural and environmental) factors.

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What are the components of a multidisciplinary pain management program?

These programs typically include a team of professionals such as doctors, nurses, physiotherapists, psychologists, and occupational therapists, each addressing different aspects of pain and recovery.

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What does the Gate-Control Theory explain?

This theory suggests that pain signals are modulated in the spinal cord, where different nerve fibers 'gate' or block the transmission of these signals.

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What are the five D's of chronic pain?

These are five negative outcomes of chronic pain: Dramatisation of complaints, Disuse through inactivity, Drug misuse through over-medicating, Dependency on others, and Distress associated with constant pain.

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Why is pain a subjective experience?

Because pain is what the patient says it is. It is a unique and personal experience that can vary greatly depending on individual factors and perceptions.

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Study Notes

Learning Outcomes

  • Pain is defined as a complex perceptual phenomenon, influenced by biological, psychological, and social factors.
  • The gate-control theory of pain is described.
  • Approaches to pain assessment are outlined.
  • Major psychological approaches to pain management are identified.

BMF Case (Hip Fracture)

  • Lisa, an 80-year-old woman, has hip surgery for a lower limb injury.
  • Post-surgery, Lisa experiences pain in her left knee and lower back.
  • Joe, Lisa's husband requires end-of-life care and planning.
  • Lisa needs a more sustainable management plan for her health care.

Learning Outcome 1: Defining Pain

  • Pain is a complex sensory and emotional experience associated with actual or potential tissue damage.

What is Pain?

  • Pain is a subjective experience.
  • Images depicting pain and an image of a person using/experiencing fire are included.

The Puzzle of Pain

  • Injury without pain.
  • Pain without injury.
  • Pain disproportionate to injury.
  • Pain after healing (phantom limb pain).
  • Success of multimodal treatments.

Definition of Pain

  • Pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage.
  • Pain is subjective.
  • Pain involves sensation and emotion.
  • Pain can occur without injury.
  • Injury does not always cause pain.

Pain: An Important Social Issue

  • Prescription drugs are a major cause of death.
  • The coming epidemic of arthritis.
  • The Cost of Pain, the third leading cause of death is due to prescription drugs.

The Cost of Pain

  • Approximately 20% of adult Europeans are affected by pain.
  • 80% of all doctor consultations in the U.S. relate to pain.
  • Chronic pain prevalence in Ireland is 35.5%.
  • Chronic pain prevalence in the UK is 48%.
  • The cost of pain in Europe is €200 billion annually.
  • The cost of pain in the U.S is 560−560 - 560−635 billion annually.

Acute vs Chronic Pain

  • Acute pain: A useful biological response to injury or illness, of limited duration.
  • Chronic pain: Pain lasting six months or more, often unresponsive to pharmacological treatment; reactions are often maladaptive.

Learning Outcome 2: Gate Control Theory of Pain

  • Pain sensations are transmitted from the injury site to the spinal gate by nerves known as nociceptors.
  • A delta fibers: Myelinated pain afferents; transmit signals related to potential or actual damage. Experience lasts a short time.
  • C polymodal fibers: Slow-conducting, non-myelinated; transmit information about dull, throbbing pain; experience typically occurs for a longer time.
  • Anti-pain fibers: A beta fibers- Myelinated, mechanically (touch) sensitive afferents. Activate to inhibit pain perception.
  • These fibres transmit information at varying speeds, resulting in varied pain experiences
  • Pain involves the experience of sharp pain at first, then a more chronic throbbing pain later.
  • A beta fiber activation counteracts pain at least partially.

Gate Control Theory of Pain: Periphery

  • There is a transmission of pain from injury to the spinal gate by nerves known as nociceptors, which contain A delta fibers (myelinated and quick acting) and C polymodal fibers (non myelinated and prolonged acting).
  • Anti-pain fibers (A beta fibers) activate to inhibit pain perception.

Gate Control Theory of Pain

  • Information transmission along A and C fibers to the substantia gelatinosa in the spinal cord to the brain.

Gate Control Theory of Pain: Psychological Influences on Pain Perception: Cognition & Mood

  • Mood: Anxiety and depression can influence pain tolerance and reporting.
  • Cognition: Attention on pain increases pain experience. Expectations on pain increase or decrease pain experience.
  • Thought types: Cause of pain, Ability to tolerate pain, Ability to control pain, Expectations of pain relief (placebo effect).

Combined Gate Control Theory inputs

  • Peripheral pain receptors send information to spinal column 'gates.'
  • At the same time, cognitions and emotions activate CNS fibers, sending info down the spinal column influencing the 'pain gate'.

Gate-control theory

  • The gate-control theory describes how pain signals are transmitted.
  • The brain sending pain signals to the spinal cord, through differing signals (+9, -3, +6, -2) influence the opening and/or closing of the gate.

Factors that Open or Close the Pain Gate

  • Tend to open the gate: Injury, inactivity, poor physical fitness, long-term drug or alcohol use, poor sleep, anxiety, depression, stress, helplessness, focussing on pain, worrying about the pain (cognitive), poor or insufficient pacing of daily activity (behavioral).

  • Tend to close the gate: Appropriate medication use, heat/cold, massage, exercise, relaxation training, sleep hygiene, laughter, humor, optimism, engagement in positive activities (behavioral and emotional).

Learning Outcome 3: Pain Assessment

  • Unidimensional Scales: Verbal rating scales use words ranked in order of severity. Visual analogue scale is an 10cm unmarked line or is coloured for visual aid. Facial expressions act as anchors.
  • Multidimensional Scales: McGill Pain Questionnaire assesses 20 descriptor scales, each with a variable number of words, helping diagnose and identify various pain dimensions such as sensory, affective, and evaluative.
  • Pain is defined as what the patient says it is.

Think, Pair, Share

  • Is it true that pain cannot be objectively measured?
  • Is patient reporting of pain a good indicator of pathological processes?
  • Useful mnemonics for pain assessment?

Learning Outcome 4: Managing Pain

  • Historical aim: Eliminate pain.
  • Modern aim: Reduce pain perception, improve coping ability, increase functional ability, decrease drug reliance, respect attempts at self-management.

Pain management: Acute

  • First line: Pharmacological interventions.
  • Second-level: Psychological interventions, including increasing patient control (e.g., PCA), teaching coping skills, including distraction, relaxation, and hypnosis.
  • This often includes using VR pain management for distraction.

Pain management - Chronic

  • Causes: Complex and multifactorial, including interactions within social environments (gain). This includes primary (intrapersonal) gain, secondary (interpersonal) gain, and tertiary gain.
  • Results: So-called "five D's": Dramatisation, Disuse, Drug misuse, Dependency, Disability.

Pain Management (Chronic)

  • Behavioral Strategies: Based on operant learning (contingency management), reinforcement of adaptive behaviors (e.g., appropriate exercise levels), withdrawal of attention/rewards for pain behaviors, and providing analgesic medication at set times rather than based on pain.
  • Cognitive Strategies: Altering beliefs about pain unmanageability, addressing catastrophising or negatively biased thinking, identifying and challenging distorted thinking, providing information, distraction, anxiety reduction, relaxation, and targeting pain area muscles.

Pain management programmes (PMPs)

  • Multidisciplinary Teams (MDTs): Include doctors, nurses, physiotherapists, psychologists, occupational therapists, and counselors.
  • Principles: CBT (cognitive behavioral therapy) underpinnings, education on pain physiology, psychology, healthy function, and self-management.
  • Delivery: Group format to normalize pain experiences and maximize learning, complete assessment, education, skills training, exercise schedules, relapse prevention, and family involvement.

Summary

  • Pain perception is influenced by biological, psychological, social, and cultural features.
  • The gate-control theory offers a framework for understanding the complexity of pain.
  • Pain is a subjective symptom, and pain assessment relies on patient perception.
  • Effective chronic pain management requires a multifaceted approach addressing physical, psychological, and socioeconomic factors.

Reading

  • Relevant reading materials are listed, including book chapters and YouTube videos on pain and pain management from various authors.

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