Tag Archives: pain relief

Total Hip Replacement Can Be Safely Performed with Minimal Opioids for Pain Relief

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MedicalResearch.com Interview with:
Andrew Wickline MD FAAOS
New Hartford, NY 13413

MedicalResearch.com:  What is the background for this study?  What are the main findings?

Response: Joint replacement has long been synonymous with pain relief–but not until 6-12 weeks after surgery.  Many patients put off joint replacement due to fear and anxiety–particularly about the possible pain after surgery often seen in the first several months.  Opioids have long been the mainstay of controlling pain after surgery but are associated with significant side effects and risk for addiction and injury. 

Our study shows that with our comprehensive protocol, 97% of patients can have successful surgical recovery with little to no opioids being necessary to stay comfortable.  Additionally, it shows that 94% of patients can go home within 24 hours and 95% will likely need no post-operative therapy to recover.

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What is the Biological Basis of Acupuncture for Systemic Inflammation Modulation?

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PainRelief.com Interview with:
QIUFU MA, PhD
Professor, Neurobiology, Cancer Biology
Harvard Medical School
Dana-Farber Cancer Institute

PainRelief.com:  What is the background for this study?  What are the main findings?

Response: This study aimed to understand the biological basis behind acupuncture practice. Modern randomized clinical trials have demonstrated the efficacy of acupuncture practice in treating certain human diseases, such as gastrointestinal disorders and chronic pain, but the underlying biological basis still poorly understood.

Our hypothesis is that acupuncture can drive the somatosensory autonomic pathways to modulate body physiology. A key innovation of this study is the development of new genetic tools to manipulate different autonomic nervous pathways, and we then used the severe systemic inflammation (cytokine storms) induced by bacterial endotoxins as the experimental model.

We found that electroacupuncture stimulation (ES) can drive distinct autonomic pathways in acupoint- and stimulation-intensity-dependent manners. Low intensity ES at hindlimb regions drives the vagal-adrenal axis, producing anti-inflammatory effects that depend on adrenal chromaffin cells. High intensity ES at the abdomen activates splenic noradrenergic neurons via the spinal-sympathetic axis, and this activation produces either anti- or pro-inflammatory effects, dependent on adrenergic receptor profiles under different diseases states

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Business Model Can Help With Pain Relief Decisions After Surgery

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Dr. Schug

PainRelief.com Interview with:
Professor Stephan A Schug MD FANZCA FFPMANZCA EDPZ 
Emeritus Professor and Honorary Senior Research Fellow
Anaesthesiology and Pain Medicine
Medical School  University of Western Australia

PainRelief.com:  What is the background for this study?

Response: This paper is the result of applying a widely used tool in operations research, Multi-Criteria Decision Analysis (MCDA), to a medical problem, namely the use of parenteral analgesics in postoperative pain management. MCDA is a modelling approach which is aimed at achieving evidence-based decisions in settings of multiple conflicting criteria. It is commonly applied to decisions in politics and business; one of our co-authors is Lawrence D Phillips from the London School of Economics and Political Sciences, where he uses this methodology in these settings. However, there is increasing use of this methodology in medicine now, in particular in assessment of medicines with obviously conflicting criteria such as efficacy, adverse effects, safety and even price. The methodology has been applied to a number of medicine (eg psychoactive drugs) and considered by the European Medicines Agency (EMA).

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ACP Recommends Non-Pharmacologic Treatments for Pain Relief From Acute Non–Low Back, Musculoskeletal Injuries

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PainRelief.com Interview with:
Timothy Wilt, MD, MPH
Chair ACP Clinical Guidelines Committee
Professor of Medicine
Minneapolis VA Center for Care Delivery and Outcomes Research.

PainRelief.com:  What is the background for this study?  What are the main findings?

Response: Acute non-low back musculoskeletal pain is common, disabling and costly. Most are treated in outpatient settings. Numerous pharmacologic and nonpharmacologic treatment options exist but there is uncertainty of their benefits, harms and costs. Additionally, opioid prescriptions are common for acute musculoskeletal injuries but have harms and can lead to chronic opioid use including dependence and overdose. ACP and AAFP developed these evidence based guidelines to assist clinicians in providing the highest quality care to their patients by considering information on benefits, harms and costs alongside patient values and preferences. Our main recommendations are as follows:

1)      ACP and AAFP recommend that clinicians treat patients with acute pain from non–low back, musculoskeletal injuries with topical nonsteroidal anti-inflammatory drugs (NSAIDs) with or without menthol gel as first-line therapy to reduce or relieve symptoms, including pain; improve physical function; and improve the patient’s treatment satisfaction.

2)      ACP and AAFP suggest that clinicians treat patients with acute pain from non–low back, musculoskeletal injuries with oral NSAIDs to reduce or relieve symptoms, including pain, and to improve physical function, or with oral acetaminophen to reduce pain.

3)      ACP and AAFP suggest that clinicians treat patients with acute pain from non–low back, musculoskeletal injuries with specific acupressure to reduce pain and improve physical function, or with transcutaneous electrical nerve stimulation to reduce pain.

4)      ACP and AAFP suggest against clinicians treating patients with acute pain from non–low back, musculoskeletal injuries with opioids, including tramadol.

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Green Light Exposure May Provide Pain Relief and Reduce Need for Opioids

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PainRelief.com Interview with:

Padma Gulur MD
Professor of Anesthesiology and Population Health
Executive Vice Chair, Duke Anesthesiology 
Director, Pain Management Strategy and Opioid Surveillance
Duke University Health System

Padma Gulur MD Professor of Anesthesiology and Population Health Executive Vice Chair, Duke Anesthesiology Director, Pain Management Strategy and Opioid Surveillance Duke University Health System

PainRelief.com:  What is the background for this study?  How is the light administered? Might your findings help explain why green is widely considered a ‘calming’ color?

Response: Pain management continues to be challenging given the limited options for pain relief and the significant continued reliance on opioid medications as a primary mode of pain relief which has lead to the prescription opioid epidemic facing the country. Opioid exposure during clinical care is a key risk factor for subsequent misuse, and the probability of prolonged use scales with both dose and duration of opioid exposure. Minimizing opioid exposures reduces misuse risk. To do so while still effectively treating pain relies on opioid sparing multimodal pain relief strategies. In practice, this manifests as polypharmacy or the use of multiple medication classes. However most medications come with a significant side effect burden. Non-pharmacological options remain limited in efficacy or are difficult to integrate into clinical care. Recent pre-clinical findings have demonstrated robust pain relief in response to exposure to green light. These effects occurred both through the addition of green illuminating light in the environment and through green-biased filtration of visualized ambient light. 

We are conducting a pilot trial of exposure to green light for pain relief in paients that have recently undergone surgery to understand its effect on acute pain and to study its effect on chronic pain we are conducting the study in fibromyalgia patients. Our goal is to evaluate the feasibility and efficacy of eyeglasses-based colored light therapy. Recruitment for the acute arm of the study is complete. The chronic arm of the study is currently recruiting.

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Selenium Level Can Affect Liver Toxicity When Acetaminophen is Used for Pain Relief

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PainRelief.com Interview with:

Dr Charareh Pourzand PhD/DSc, FHEA, FRSB
Reader in Biopharmaceutics
Medicines Design Theme Leader
Head of UVA Photobiology, Iron & Oxidative stress group
Department of Pharmacy & Pharmacology
Centre for Therapeutic Innovation
University of Bath, Bath, United Kingdom



PainRelief.com:  What is the background for this study?  What are the main findings?

Response: It is recognized that acetaminophen (also known as paracetamol), a medication that is globally used for fever and pain, can cause acute liver damage when taken at higher level than the recommended dose.

This study demonstrated that acetaminophen can decrease the mouse liver’s antioxidant capacity by decreasing both the level of thioredoxin reductase (a selenoprotein and antioxidant enzyme) activity and glutathione (GSH, an antioxidant molecule) content in a dose- and time-dependent manner. These decreases also correlated with the extent of the liver damage exerted by acetaminophen. In addition, both mild-deprivations in selenium or excess selenium supplementation diets increased the extent of liver injury compared with mice with normal dietary selenium levels.  

In acetaminophen-treated mice, animals reared on selenium-deficient and excess selenium-supplemented diets also exhibited an increase in the oxidation state of the thioredoxin reductase-mediated system in subcellular compartments of the hepatocytes, notably in mitochondria which is the energy factory of the organism.

These observations revealed how the alteration of the function of the main antioxidant thioredoxin and GSH systems by acetaminophen is linked to hepatotoxicity.  Moreover it became apparent that the maintenance of the redox environment by thiols is a crucial determinant for the extent of acetaminophen-induced liver toxicity. Finally our study revealed the importance of dietary selenium level and the selenoproteins activity in protecting mice against the liver failure that can occur in acetaminophen overdose.

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Deprescribing Opioids Used For Chronic Non-Cancer Pain Relief

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PainRelief.com Interview with:
Dr Stephanie Mathieson PhD
NHMRC Health Professional Research Early Career Fellow
The University of SydneyFaculty of Medicine and Health, Sydney School of Public Health
Australia

Dr Stephanie Mathieson is a Research Fellow at the Institute for Musculoskeletal Health, The University of Sydney. Her National Health and Medical Research Council (NHMRC) Health Professional Research Early Career Fellow is focused around reducing the opioid epidemic in Australia.

Dr. MATHIESON

PainRelief.com:  What is the background for this study?

Response: This study aimed to review the current evidence of the efficacy of interventions designed to reduce/cease the prescription of, or the use of, opioid analgesics in patients with chronic non-cancer pain.

As clinical practice guidelines now discourage the initial prescription of opioid analgesics for chronic non-cancer pain, clinicians need to know which opioid dose reduction methods are most effective and safe for deprescribing opioid analgesics in their patients.

PainRelief.com:?  What are the main findings?

Response: Our systematic review extended the previous body of literature by incorporating five new randomised trials; however, clinical and statistical heterogeneity prevented meta-analysis. There were ten patient-focused interventions (i.e. aimed at reducing a patient’s opioid dose), and two clinician focused interventions (i.e. aimed at changing the clinician’s behaviour). Overall, our review was unable to recommend any one opioid analgesic deprescribing strategy in patients with chronic pain due to the small number of trials and heterogeneity.

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PET Probe Pinpoints Sites of Pain Generation to Improve Pain Management

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PainRelief.com Interview with:
Sandip Biswal MD
Associate Professor of Radiology
Co-Section Chief, Musculoskeletal Imaging
Director, Musculoskeletal Imaging Fellowship
Member, Molecular Imaging Program at Stanford (MIPS) and Bio-X
Department of Radiology
Stanford University School of Medicine

PainRelief.com:  What is the background for this study?
Response: Our ability to manage patients with chronic pain remains woefully inadequate. Chronic pain patients are faced with limited resources and inadequate care, and as a result, they make up the #1 disease group in the world—numbering more than heart disease, diabetes and cancer combined. Those suffering from low back pain, headache, fibromyalgia, arthritis and many other pain syndromes make up this ever-growing population. A big part of our inability to care for chronic pain patients is due to the fact that our current imaging methods for correctly identifying pain generators remain substantially inaccurate. Our ability to accurately identify the cause of a person’s pain, discomfort, inflammation or other related musculoskeletal symptom(s) using current clinical imaging approaches, such as magnetic resonance imaging (MRI), computed tomography (CT), digital radiography (x-ray) and ultrasound, is quite limited, lacks sensitivity/specificity and can even misguide treatment. As a musculoskeletal radiologist, I witness these shortcomings on a daily basis. I, for example, see firsthand how the lack of reliable diagnostic tools leads to significant misdiagnosis, mismanagement, incorrect use of opioids, unhelpful surgeries and, ultimately, therapeutic failures. We need a much better way to diagnose pain generators. 

Accordingly, our group has been developing new clinical imaging methods that pinpoint the site of pain generation using imaging probes—more specifically, positron-emission tomography (PET) tracers that specifically target “pain receptors” or “pain molecules.” These pain receptors or pain molecules are present in abundance at the site of pain generation. After injecting one of these imaging probes into a patient through the vein, we give the probe a few minutes to circulate around the body and stick to areas that have a high density of pain receptors. We can then take a picture of the patient with a special camera that will show “hot spots” on the image that signify the location of high number of pain receptors, thereby highlighting “painful” pro-inflammatory and/or pro-nociceptive tissues. With this approach, doctors and patients have information with which they can make more objective decisions about the diagnosis and treatment of one’s pain.

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Joint Replacement: Have Opioid Prescription Patterns for Pain Relief Changed?

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PainRelief.com Interview with:
Rahul Shah
Medical Student
The University of Texas Medical Branch

PainRelief.com:  What is the background for this study?

Response: The United States has a unique overreliance on opioids for managing both acute and chronic pain, compared to many other developed nations. Opioid misuse and addiction frequently start with large doses of opioids prescribed after surgical interventions. This overprescribing contributes to the high rates of opioid use disorder and overdose deaths in the United States. There have been myriad interventions to curb opioid overprescribing, ranging from the DEA’s hydrocodone rescheduling law to opioid prescribing guidelines issued by the CDC, states and orthopedics specialty organizations. 

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