MAGNETIC THERAPY FOR THE MANAGEMENT OF SOMATIC PAIN By Dan E. Briggs, RN, BSN Submitted in Partial Fulfillment of the Requirements for the Master of Science in Nursing Degree Edinboro University of Pennsylvania Magnetic therapy for the management of somatic pain by Dan E. Briggs. Thesis Nurs. 2001 B854m c. 2 Approved by: Xidith Schilling, CRNP, PliDj/^ ^Committee Chairperson /&/ Alice Conway, CRNP, - Committee Member ate Pdul Kollut, DO Committee Member Date 0 o Abstract Magnetic Therapy for the Management of Somatic Pain Throughout history, humankind has experienced the unpleasant sensation of pain. Pursuant to this, relief from the discomfort of pain has been sought through whatever means conceivable including the use of magnets. This study was done to help provide a basis for the decision as to weather or not health care providers should advocate the use of static magnets in pain management. The theoretical framework of this study was the Four Conservation Principals by Myra Levine (1969), specifically the conservation of patient energy regarding the inflammatory process. This research studied the effects of commercially available medical magnets, of varying size, on a convenient sample of 10 patients from the northwestern Pennsylvania area having somatic pain for more than one month. The McGill Pain Questionnaire was used at baseline, 24 hours, and 7 days after beginning magnetic therapy. The Student t test revealed a statistically significant improvement after 24 hours, which continued at 1 week, as measured by the three parameters of the McGill Pain Questionnaire that were addressed. To be considered significant the t value had to be greater than 1.833. The three parameters were: The Number of Words Chosen which had a net improvement of t = 3.1058 (p - 0.0009), the Present Pain Index which had a net improvement of t = 6.5000 (p < 0.0001), and the Pain Rating Index which had a net improvement oft = 5.3930 (p < 0.0001). Magnetic therapy continues to be vigorously studied and shows promising results (Whitaker &Adderly, 1998). ii Acknowledgements I would like to take this opportunity to express my thanks and appreciation to those who, through their contributions and support, made this thesis possible. I would first like to thank my wife and children for their patience and understanding. I also wish to express my gratitude to Dr. Robert Melzack for allowing the use of his McGill Pain Questionnaire. Thanks to Dr. Janet Geisel, Dr. Judith Schilling, Dr. Alice Conway, and Dr. Paul Kohut for their input and guidance. My sincere appreciation to each and every participant of the study, and to Sandy Hearn for her invaluable assistance. iii Table of Contents Content Page Abstract ii Acknowledgements iii List of Tables vii Chapter I: Introduction 1 Background of the Problem 1 Problem Statement 3 Theoretical Framework 3 Statement of Purpose 5 Definition of Terms 5 Assumptions 6 Limitations 7 Summary 7 8 Chapter II: Review of Literature 8 Pain Physiology Pharmacologic Interventions 11 Magnetic Theories 13 Magnetic Studies 14 Pulsed Electromagnetic Fields 14 Static Magnetic Fields 19 23 Summary iv Content Page Chapter III: Methodology ,25 Hypothesis 25 Operational Definitions 25 Setting, Sample, and Procedure 26 Informed Consent 27 Instrumentation 27 Data Analysis 28 Summary 28 Chapter IV: Results 29 Demographics 29 Number of Words Chosen (NWC) 29 Present Pain Index (PPI) 31 Pain Rating Index (PRI) 32 Summary, 33 34 Chapter V: Discussion Sample, 34 NWC, PPI, PRI 34 Conclusions 34 Recommendations 36 Summary 36 v Content Page References 38 Appendixes 42 A. Informed Consent 43 B. McGill Pain Questionnaire ,44 C. Permission to Use McGill Pain Questionnaire 48 vi List of Tables Table Page 1. Demographic Information 30 2. Number of Words Chosen 31 3. Present Pain Index 32 4. Pain Rating Index 33 vii 1 Chapter I Introduction This study is intended to help shed some light on the controversy over whether or not to suggest magnetic therapy for patients not responding well to conventional therapies. This chapter provides an overview of pain management involving the use of magnetic therapy. It also discusses the physiology of pain, thereby laying the groundwork for the more in-depth analysis of pain control by means of static magnetic fields. Also addressed in this chapter is the theoretical framework guiding the study, the assumptions and limitations of the study, and definitions of terms used. Background of the Problem “There is nothing in human experience more central than our capacity to feel, and no aspect of this so crucial as our capacity to suffer, perhaps more particularly to suffer from extremes of physical pain” (Petrie, 1967, p. 1). Throughout human history, the experience of physical pain, albeit in varying degrees, has been ubiquitous (Petrie). Pain is the experiencing of an unpleasant emotional or sensory stimulus arising from actual or potential tissue damage (Thomas, 1997). In the United States each year 155 million people experience a minimum of at least one episode of acute pain, one-third of which is reported as severe, causing an estimated 700 million workdays to be lost, at a cost of $60 billion annually (Thomas). The experience of pain is modified, or amplified, by a number of dynamic and ever-changing interactions of emotional, mental, biochemical, physiological, social, psychological, cultural, and physical factors. Thus, pain experienced at one time may be perceived as severe, and at another time perceived as minimal, though all outward parameters appear equal or unchanged. 2 Pain is one of the most common reasons patients consult a physician, yet it is often inadequately treated” (Fingerhood, 1999, p. 284). One reason that pain is not adequately treated is an alleged obsession by healthcare providers with the possibility of causing drug addiction, even though studies have reported that physical dependence on something such as an opioid requires routine therapeutic dosing, four to six times a day, for 6 weeks (Thomas, 1997). Fingerhood wrote that treatment of pain should be based on the clinician’s findings and evaluation of the causative agent. This treatment should include consideration of not only pharmacologic agents, but also nonpharmacologic therapies, and should be prescribed, as appropriate. There are many nonpharmacologic therapies for pain such as relaxation, meditation, and imagery. One such nonpharmacologic therapy may be the use and manipulation of magnetic fields. Scientists are still at a loss to define and quantify magnetism, but do agree that it is one of the primary forces in the universe (Whitaker & Adderly, 1998). Magnetic fields exist not only in magnets, both electromagnets and permanent magnates, but also within biologic organisms including human beings (Whitaker & Adderly). The existence of magnetic fields generated within the cells of our bodies is evidenced by the use of a major diagnostic tool known as magnetic resonance imaging (MRI) (Rosenfeld, 1996). The MRI machine interprets the magnetic fields produced by the various tissues of our bodies to help guide diagnosis and treatment of disease. Historically, natural magnetic rocks known as lodestone where used by ancient cultures to treat everything from gout to baldness with varying degrees of success, much of which was later attributed to the placebo effect. However, in recent years an increasing 3 number of studies have shown that there may, indeed, be some truth to the supposition that magnets do exhibit healing properties (Whitaker & Adderly). Problem Statement Throughout history, ill or injured patients generally have tried to find ways of alleviating their discomfort by whatever means they deemed reasonable including not only allopathic treatment, but also treatments involving “alternative medicine.” Magnetic therapy is not currently a widely accepted and taught treatment for the management of pain, resulting in the potential for the patient to loose out on this form of possible pain relief. Nurse practitioners have a responsibility to help educate, guide, and advocate those treatments that may prove beneficial to the patient, while protecting patients from further harm or exacerbation of illness. To this end, the nurse practitioner needs to have a good working knowledge and understanding not only of standard medical management of various ailments, but also of many alternative medical practices and treatments. This kind of information is often not part of current nurse practitioner education on a regular basis. Gaining such knowledge will help nurse practitioners to remain open minded to their patients’ needs and desires to attain and maintain an optimal level of health and functioning. Theoretical Framework The energy field theory of Myra Levine (1969), known as the Four Conservation Principles, was selected as the theoretical framework for this study. This framework deals with the patient as a whole, and addresses the inflammatory response specifically as a subgroup in the conservation of patient energy principle. Levine’s theory directs the nurse, or in this case the nurse practitioner, to assist the patient in conservation of energy 4 and integrity through therapy or support (Meleis, 1997). The Four Conservation Principles are as follows: 1. The principle of the conservation of patient energy. 2. The principle of the conservation of structural integrity. 3. The principle of the conservation of personal integrity. 4. The principle of conservation of social integrity. One of the major concepts of the principle of conservation of patient energy is the organismic response, which is the individual’s ability to adapt to environmental changes, both internal and external (Marriner, 1986). Part of this organismic response is the inflammatory response that, if unchecked, can become a serious drain on an individual’s energy reserves. The inflammatory response is a defense mechanism to remove or keep out unwanted irritants or pathogens, and is a way of healing (Marriner, 1986). A goal of the nurse is to assist the patient in management of the balance between maintaining sufficient energy and processes, such as healing and aging, that drain energy (Levine, 1969). Conservation of structural integrity is another major concept in the theory, which states that healing is restorative to structural integrity and that the nurse should attempt to limit the amount of tissue involved in the disease process (Marriner, 1986). Respecting the patient’s wishes, supporting his or her defenses, and providing education fall under the principle of conservation of personal integrity (Marriner, 1986). Conservation of social integrity is the fourth and final principal which states that life and health in general are given meaning through the quality and quantity of social interactions with those around us (Levine, 1969). 5 W hen the patient is experiencing pain, either long-term or short-term, an impact is exerted on the four principles: (a) energy, (b) structural integrity, (c) personal integrity, and (d) social integrity. The nurse practitioner, treating the patient as a whole, can exert an effect on all four principles by assisting the patient with the management and control of the pain. This can be accomplished by several means including prescription of pharmacological agents, teaching of relaxation techniques, manipulation therapy, and the use of alternative medicine techniques such as magnetic therapy, which was the focus of this study. The nurse practitioner, therefore, is to draw on a knowledge base from the sciences to create an atmosphere within the patient’s environment favorable for healing and restoration of energy (Meleis, 1997). Statement of Purpose The study examined the results of magnetic therapy for the control and alleviation of pain. The information obtained through this study may be used to help determine if magnetic therapy should or should not be advocated by the nurse practitioner. Definition of Terms Several terms used in this study are defined in order to assure a proper frame of reference, and to avoid misconception. 1. Pain refers to the experience of unpleasant stimuli of either acute or chronic nature (Tortora & Anagnostakos, 1984). 2. Magnet is a physical object that exerts a constant or static magnetic field (Whitaker & Adderly, 1998). 3. Electromagnet is a device that creates a magnetic field while electricity flows through a coil of conducting wire (Whitaker & Adderly, 1998). 6 4. The nurse practitioner is a primary health care provider who provides health care and education to patients with common acute and stable chronic disease conditions (Sheehy & McCarthy, 1998). 5. A patient is a person who is seeking aid for the treatment of a health-related problem. 6. Alternative medicine is the approach to medical diagnosis and therapy that has not been developed by use of generally accepted scientific methods (Thomas, 1997). 7. Gauss is a unit of measure of magnetic force (Thomas, 1997). Assumptions This study was based on several assumptions: 1. Pain is whatever the patient says it is, and occurs whenever the patient says it does (McCaffery, 1968). 2. Patients experiencing pain find the experience unpleasant and wish to alleviate the pain. 3. Nurse practitioners are motivated to help patients address their medical needs, and help the patient to conserve energy and promote physical, emotional, and social well being. 4. Participants in the study were able to read and understand the survey tool. 5. Participants in the study answered questions honestly. 6. Study participants used the magnets as directed. 7 Limitations There were several limitations inherent in this study: 1. The McGill Pain Questionnaire, utilized in the study, is not individualized to the type and degree of pain experienced by each patient, but incorporates most common pain descriptors. 2. The sample group was small, which may affect the generalizability of the results. 3. The sample group \yas from a population located in northwestern Pennsylvania, which may also affect the generalizability of the results to the greater populous. 4. Pain was assessed via subjective data collection. 5. No scientific definition of the substance of the magnetic field is available by current science. 6. Magnetic therapy was individualized to each patient’s needs. 7. No placebo control group was used. 8. Participants had the foreknowledge that they would receive an active magnet. Summary This chapter has established the framework upon which this study of the effects of magnetic therapy on pain control was based. It addressed the subject of pain, how it is perceived, and the cost of pain in the United States. The Four Principles of Conservation by Myra Levine (1969) was the theoretical framework for this study. Terms used in the study have been defined, and assumptions and limitations acknowledged. 8 Chapter II Review of Literature This chapter reviews the body of knowledge relevant to the question: should magnetic therapy be advocated by the nurse practitioner for the treatment of somatic pain? This review of literature provides a brief description of the physiology of pain and current pharmacologic interventions, and theories as to how magnetic fields alter pain perception. Also presented is an overview of information obtained from studies done in recent years concerning both static and electromagnetic fields for the treatment of pain. Pain Physiology “Pain is whatever the experiencing person says it is, existing whenever he says it does” (McCaffery, 1968). Since each person is different, the perception and interpretation of pain is colored by pervious experiences in life. This gives rise to a constellation of descriptions and beliefs regarding pain as it impacts on the psychosocial and physical functioning of each person. The American Pain Society (APS) defines pain in this maimer: “Pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage” (APS, 1992, p. 2). Although the emotional consequences of pain should not be ignored by the nurse practitioner, for the sake of this study only the physiologic aspects of pain were examined. Pain can be categorized into different forms: (a) somatic or visceral (Tortora & Anagnostakos, 1984), and (b) acute or chronic (Thomas, 1997). Somatic pain can arise from stimulation of receptors located 9 in the skin, fascia, tendons, skeletal muscles, and joints. Visceral pain arises from the internal organs, or viscera. Acute pain is considered to be pain of sudden or slow onset, of any intensity from mild to severe, with an anticipated or predictable duration of less than 6 months. Chronic pain is defined as pain of sudden or slow onset, of any intensity from mild to severe, constant or recurring without an anticipated or piedictable end and a duration greater than 6 months. Pain is the brain’s interpretation of neural impulses received from pain receptors, also known as nociceptors, which are the branched ends of dendrites, found in nearly every tissue of the body (Tortora & Anagnostakos, 1984). For pain to occur, a signal must go through four stages: a) transduction, b) transmission, c) perception, and d) modulation (McCaffery & Pasero, 1999). Noxious stimuli, be they chemical, mechanical, or thermal, cause damage to cells which in turn release substances at the point of contact such as histamine, bradykinin, prostaglandins, serotonin, and substance P. In sufficient quantity, these substances alter the permiability of the nociceptor’s cellular membrane to sodium ions. The sudden influx of sodium ions temporarily changes the polarity of the inside of the cell to a positive charge relative to the outside of the cell. This is called depolarization. Potassium ions are then exchanged with the sodium, returning the cell to its normal state, called repolarization. When depolarization and repolarization occur with sufficient regularity, an action potential is created and the stimulus is converted to an impulse. This occurrence is known as transduction, and transpires in a matter of milliseconds. Transmission now takes place from the point of contact to the dorsal horn of the spinal cord via nociceptor fibers. There are two types of nociceptor 10 fibers responsible for this first leg of transmission: C fib