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Pain physiology

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https://www.readbyqxmd.com/read/27913981/the-challenges-of-anaesthesia-and-pain-relief-in-hip-fracture-care
#1
Rachel Cowan, Jun Hao Lim, Terence Ong, Ashok Kumar, Opinder Sahota
The care of the older person with hip fracture is complicated by their comorbid condition, limited physiological reserve, cognitive impairment and frailty. Two aspects of hip fracture management that have received considerable attention are how best to manage the pain associated with it and the ideal mode of anaesthesia. Existing literature has reported on the suboptimal treatment of pain in this orthogeriatric cohort. With recent advancements in medical care, a number of options have emerged as alternatives to conservative systemic analgesia...
December 3, 2016: Drugs & Aging
https://www.readbyqxmd.com/read/27912032/pain-input-impairs-recovery-after-spinal-cord-injury-treatment-with-lidocaine
#2
Joel D Turtle, Misty M Strain, Miriam Aceves, Yung-Jen Huang, Joshua A Reynolds, Michelle A Hook, James W Grau
More than 90% of spinal cord injuries are caused by traumatic accidents and are often associated with other tissue damage (polytrauma) that can provide a source of continued pain input during recovery. In a clinically relevant spinal cord contusion injury model, prior work has shown that noxious stimulation at an intensity that engages pain (C) fibers soon after injury augments secondary injury and impairs functional recovery. Noxious input increases the expression of pro-inflammatory cytokines (interleukin 1β and 18), cellular signals associated with cell death (caspase 3 and 8), and physiological signs of hemorrhage...
December 2, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27910248/use-of-heart-rate-variability-and-photoplethysmograph-derived-parameters-as-assessment-signals-of-radiofrequency-therapy-efficacy-for-chronic-pain
#3
Jing-Jhao Ye, Chiung-Cheng Chuang, Yu-Ting Tai, Kuan-Ting Lee, Kuo-Sheng Hung
BACKGROUND: Radiofrequency therapy (RFT) generates molecular motion, and produces heat and electromagnetic effects on tissues, which attenuate pain sensation and thereby relieve pain. This study was to observe the altering trend of physiological parameters after RFT for chronic cervical or lumbar pain. METHODS: This study recruited 66 patients with chronic cervical or lumbar pain, and recorded their physiological parameters before and after RFT by using heart rate variability (HRV) and photoplethysmography (PPG) to explore the feasibility of RFT efficacy assessment...
December 2, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27910097/chronic-migraine-an-update-on-physiology-imaging-and-the-mechanism-of-action-of-two-available-pharmacologic-therapies
#4
Sheena K Aurora, Mitchell F Brin
Several lines of research support the hypothesis that migraine is a spectrum of illness, with clinical symptoms that vary along a continuum from episodic migraine to chronic migraine. Physiologic changes may result in episodic migraine evolving into chronic migraine over months to years in susceptible individuals. With chronification, headache frequency increases, becoming more disabling and less responsive to therapy. Neurophysiologic and functional imaging research has reported that chronic migraine may be associated with severity-specific metabolic, functional, and structural abnormalities in the brainstem...
December 2, 2016: Headache
https://www.readbyqxmd.com/read/27907960/multimodality-monitoring-illuminating-the-comatose-human-brain
#5
Charles L Francoeur, Margaret Pain, Stephan A Mayer
The field of neurocritical care has evolved tremendously in recent years, a development explained vastly by the advent of neurophysiological monitoring. From basic intracranial pressure measurements to brain tissue oxygenation, microdialysis, cerebral blood flow (CBF), and surface and intracortical electroencephalography (EEG), our ability to detect and control physiologic endpoints of brain function in comatose patients has grown substantially. The integration of these data gave birth to the concept of multimodality monitoring (MMM)...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27900193/exertional-rhabdomyolysis-physiological-response-or-manifestation-of-an-underlying-myopathy
#6
Renata S Scalco, Marc Snoeck, Ros Quinlivan, Susan Treves, Pascal Laforét, Heinz Jungbluth, Nicol C Voermans
Exertional rhabdomyolysis is characterised by muscle breakdown associated with strenuous exercise or normal exercise under extreme circumstances. Key features are severe muscle pain and sudden transient elevation of serum creatine kinase (CK) levels with or without associated myoglobinuria. Mild cases may remain unnoticed or undiagnosed. Exertional rhabdomyolysis is well described among athletes and military personnel, but may occur in anybody exposed to unaccustomed exercise. In contrast, exertional rhabdomyolysis may be the first manifestation of a genetic muscle disease that lowers the exercise threshold for developing muscle breakdown...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27899527/biased-agonists-of-the-kappa-opioid-receptor-suppress-pain-and-itch-without-causing-sedation-or-dysphoria
#7
Tarsis F Brust, Jenny Morgenweck, Susy A Kim, Jamie H Rose, Jason L Locke, Cullen L Schmid, Lei Zhou, Edward L Stahl, Michael D Cameron, Sarah M Scarry, Jeffrey Aubé, Sara R Jones, Thomas J Martin, Laura M Bohn
Agonists targeting the kappa opioid receptor (KOR) have been promising therapeutic candidates because of their efficacy for treating intractable itch and relieving pain. Unlike typical opioid narcotics, KOR agonists do not produce euphoria or lead to respiratory suppression or overdose. However, they do produce dysphoria and sedation, side effects that have precluded their clinical development as therapeutics. KOR signaling can be fine-tuned to preferentially activate certain pathways over others, such that agonists can bias signaling so that the receptor signals through G proteins rather than other effectors such as βarrestin2...
November 29, 2016: Science Signaling
https://www.readbyqxmd.com/read/27898457/ethnicity-cortisol-and-experimental-pain-responses-among-persons-with-symptomatic-knee-osteoarthritis
#8
Matthew S Herbert, Burel R Goodin, Hailey W Bulls, Adriana Sotolongo, Megan E Petrov, Jeffrey C Edberg, Laurence A Bradley, Roger B Fillingim
OBJECTIVES: While several factors are known to contribute to ethnic differences in pain, relatively little attention has been devoted to physiological factors. Our first aim was to examine the relationship between cortisol and pain responses during a cold-pressor task (CPT) among African American (AA) and non-Hispanic White (NHW) adults with knee osteoarthritis (OA). Our second aim was to assess the relationship between perceived racial discrimination and cortisol among AA participants...
November 28, 2016: Clinical Journal of Pain
https://www.readbyqxmd.com/read/27885658/early-skin-to-skin-contact-for-mothers-and-their-healthy-newborn-infants
#9
REVIEW
Elizabeth R Moore, Nils Bergman, Gene C Anderson, Nancy Medley
BACKGROUND: Mother-infant separation post birth is common. In standard hospital care, newborn infants are held wrapped or dressed in their mother's arms, placed in open cribs or under radiant warmers. Skin-to-skin contact (SSC) begins ideally at birth and should last continually until the end of the first breastfeeding. SSC involves placing the dried, naked baby prone on the mother's bare chest, often covered with a warm blanket. According to mammalian neuroscience, the intimate contact inherent in this place (habitat) evokes neuro-behaviors ensuring fulfillment of basic biological needs...
November 25, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27884758/magnesium-enhances-opioid-induced-analgesia-what-we-have-learnt-in-the-past-decades
#10
REVIEW
Magdalena Bujalska-Zadrożny, Jan Tatarkiewicz, Kamila Kulik, Małgorzata Filip, Marek Naruszewicz
Opioids are increasingly used in alleviating pain, including cancer-related pain and postoperative pain. Unfortunately, the development of tolerance, the resistance of neuropathic pain on opioid analgesia or other undesirable effects may limit their utility. In order to reduce opioid doses, and thereby to avoid the risk of side effects and sudden deaths due to overdosing, attempts have been made to introduce co-analgesics. Due to an increasing amount of data concerning a potential enhance of opioid analgesia by the physiological antagonist of N-methyl-d-aspartate receptors, magnesium ions (Mg(2+)), a concomitant use of such a combination seems to be interesting from a clinical point of view...
November 21, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27883227/preterm-infants-exhibited-less-pain-during-a-heel-stick-when-they-were-played-the-same-music-their-mothers-listened-to-during-pregnancy
#11
Lina Kurdahi Badr, Taline Demerjian, Tania Daaboul, Hanan Abbas, Mirvat Hasan Zeineddine, Lama Charafeddine
AIM: Playing music during painful procedures has shown inconsistent benefits for preterm infants. This study observed preterm infants during a heel stick procedure to assess whether listening to the music their mothers listened to during pregnancy had any impact on their pain, physiological and behavioural parameters. METHODS: We randomly exposed 42 preterm infants, with a mean gestational age of 31.8 ±2.79 weeks, to the music their mothers listened to during pregnancy, recorded lullabies and no music, before, during and after a heel stick...
November 24, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27882767/-traumatic-symphyseal-rupture-by-vaginal-delivery-report-of-a-rare-case
#12
J Hofierková
OBJECTIVE: This case report draw attention symphysis pubic dysfunction and injury pelvic girdle by vaginal delivary (in our case compliated by dystokia shoulders), mainly its diagnostic, prediction and treatment. DESIGN: Case report. SETTING: Department of Obstetrics and Gynecology. Hospital Česká Lípa. CASE REPORT: We report a case of a 31 years old woman, who gave birth for the second time with rupture of symphysis after delivery...
2016: Ceská Gynekologie
https://www.readbyqxmd.com/read/27882766/-rupture-of-focal-nodular-hyperplasia-in-the-37th-week-of-pregnanacy-case-report
#13
M Velíšková, R Vlk, M J Halaška, G Minajev, T Krejčí, L Rob
OBJECTIVE: We describe a case of spontaneous hepatic rupture associated with undiagnosed focal nodular hyperplasia of a patient in the third trimester of pregnancy. Additionally, we provide a brief review of literature. DESIGN: Case report. SETTING: Department of Obstetrics and Gynaecology, 2nd Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague. RESULTS: We report the case of a 29 year old patient with otherwise physiological pregnancy, who was hospitalized with pain in left hypochondrium...
2016: Ceská Gynekologie
https://www.readbyqxmd.com/read/27882659/interventions-for-women-who-have-a-caesarean-birth-to-increase-uptake-and-duration-of-breastfeeding-a-systematic-review
#14
REVIEW
Sarah Beake, Debra Bick, Cath Narracott, Yan-Shing Chang
Rates of breastfeeding uptake are lower after a caesarean birth than vaginal birth, despite caesarean rates increasing globally over the past 30 years, and many high-income countries reporting overall caesarean rates of above 25%. A number of factors are likely to be associated with women's infant feeding decisions following a caesarean birth such as limited postoperative mobility, postoperative pain, and ongoing management of medical complications that may have triggered the need for a caesarean birth. The aim of this systematic review was to evaluate evidence of interventions on the initiation and duration of any and exclusive breastfeeding among women who had a planned or unplanned caesarean birth...
November 24, 2016: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/27882640/physiological-markers-of-exercise-capacity-and-lung-disease-severity-in-cystic-fibrosis
#15
Laurie Smith, Charles C Reilly, Victoria MacBean, Caroline J Jolley, Caroline Elston, John Moxham, Gerrard F Rafferty
BACKGROUND AND OBJECTIVE: Peak aerobic capacity (VO2 peak) is an important outcome measure in cystic fibrosis (CF), but measurement is not widely available and can be influenced by patient motivation, pain and fatigue. Alternative markers of disease severity would be helpful. Neural respiratory drive, measured using parasternal intercostal muscle electromyography (EMGpara), reflects the load to capacity balance of the respiratory system and provides a composite measure of pulmonary function impairment in CF...
November 24, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27879508/effect-of-an-annular-closure-device-barricaid-on-same-level-recurrent-disk-herniation-and-disk-height-loss-after-primary-lumbar-discectomy-two-year-results-of-a-multicenter-prospective-cohort-study
#16
Scott L Parker, Gordan Grahovac, Duje Vukas, Milorad Vilendecic, Darko Ledic, Matthew J McGirt, Eugene J Carragee
STUDY DESIGN: A prospective cohort study. OBJECTIVE: To evaluate whether an annular closure device could be implanted safely to reduce same-level recurrent disk herniation, or attenuate disk height loss and improve the outcome after lumbar discectomy. SUMMARY OF BACKGROUND DATA: Same-level recurrent disk herniation, disk height loss, and progressive degeneration are common complications and sequelae after lumbar discectomy. Techniques to reduce these consequences may improve outcomes...
December 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27877065/poor-adhesion-of-fentanyl-transdermal-patches-may-mimic-end-of-dosage-failure-after-48-hours-and-prompt-early-patch-replacement-in-hospitalized-cancer-pain-patients
#17
Isabelle Arnet, Sabrina Schacher, Eva Balmer, Dieter Koeberle, Kurt E Hersberger
CONTEXT: Renewal of fentanyl transdermal patch (transdermal therapeutic system [TTS]) should occur every 3 days (72 hours) according to manufacturer's guidelines. Some studies mentioned patients reporting end-of-dose failure, and thus, some authors recommend shortening the interval of application to 2 days (48 hours). However, reasons for early replacement are mostly unknown. OBJECTIVES: The objectives of this study were to assess the prevalence of early replacement of fentanyl TTS in a cancer center in Basel, Switzerland, and to assess the reasons for early replacement in stationary patients...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/27875056/opioid-nsaid-and-otc-analgesic-medications-for-dental-procedures-pearl-network-findings
#18
Ying Jo Wong, James Keenan, Keith Hudson, Henry Bryan, Frederick Naftolin, Van P Thompson, Ronald G Craig, Don Vena, Damon Collie, Hongyu Wu, Abigail G Matthews, Ashley C Grill, Frederick A Curro
OBJECTIVE: Dental treatment is often categorized as a moderately or severely painful experience; however, no clinical data reported by the patient and dentist currently exists to support this degree of pain. This has contributed possibly to the overprescribing of analgesics, in particular the opioid class of medications. The primary objective of the study was to document the dentists' postprocedural prescriptions and recommendations for analgesic medications and their effectiveness for a 5-day period...
November 2016: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/27874837/effectiveness-of-spiritist-passe-spiritual-healing-on-the-psychophysiological-parameters-in-hospitalized-patients
#19
Élida Mara Carneiro, Giselle Vanessa Moraes, Guilherme Azevedo Terra
Context • The coexistence of affective disorders, especially anxiety and depression, with medical illness is a topic of considerable clinical and research interest. Complementary biofield modalities are therapies that involve touch or placement of the hands in or through biofields. Spiritual healing, or Spiritist passe (SP), is a kind of laying on of hands (LOH), and therefore is a biofield therapy. Objective • The current study intended to evaluate the effects of SP on psychological parameters such as anxiety and depression and on the perceptions of muscle tension and wellness as well as physiological parameters, such as pain intensity, heart rate (HR), and oxygen saturation (SpO2)...
July 2016: Advances in Mind-body Medicine
https://www.readbyqxmd.com/read/27871921/eeg-frequency-tagging-using-ultra-slow-periodic-heat-stimulation-of-the-skin-reveals-cortical-activity-specifically-related-to-c-fiber-thermonociceptors
#20
Elisabeth Colon, Giulia Liberati, André Mouraux
The recording of event-related brain potentials triggered by a transient heat stimulus is used extensively to study nociception and diagnose lesions or dysfunctions of the nociceptive system in humans. However, these responses are related exclusively to the activation of a specific subclass of nociceptive afferents: quickly-adapting thermonociceptors. In fact, except if the activation of Aδ fibers is avoided or if A fibers are blocked, these responses specifically reflect activity triggered by the activation of Type 2 quickly-adapting A fiber mechano-heat nociceptors (AMH-2)...
November 19, 2016: NeuroImage
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