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Query: UMLS:C0184567 (acute pain)
 3,962 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Patients suffering from vascular disease are often a challenge for the acute pain service. Ischaemia, impaired wound healing, stump and phantom limb pain often require a complex analgesic regimen. Invasive measures such as spinal or epidural catheters can be very helpful but carry the risk of infection, as shown by this case report. A 53-year-old woman with a ten-year history of diabetes developed arterial vascular disease. Her right lower leg had been amputated two years previously. She was now admitted with necroses of the left forefoot. A bypass operation was performed under general anaesthesia. Because of intractable ischaemic pain, she was provided with an epidural catheter by the acute pain service. The bypass occluded, however, and a few days later her left lower leg also had to be amputated, this operation being performed under epidural anaesthesia with bupivacaine. The catheter was subsequently used for postoperative pain control and as a means to prevent phantom limb pain. When signs of superficial catheter infection were noticed days later, the catheter was immediately removed. Intractable pain then developed in the left leg which could not be sufficiently controlled with opioids and NSAIDs, and so a second epidural catheter was inserted one segment rostrally. Several days later the infected vascular prosthesis had to be removed followed by amputation of the thigh, this operation also being performed in epidural anaesthesia. Eleven days after insertion of the first epidural catheter, the patient complained of low back pain and headache. Examination by a neurologist revealed no signs of intraspinal infection. The second epidural catheter dislocated at this point in time and it was decided to introduce a third one, this being the only means to treat the otherwise intractable stump pain. Ten days later meningism, Kernig's sign and leucocytosis developed. NMR tomography detected intraspinal fluid in the epidural space at the dorsal border of the spinal canal. A hemilaminectomy was performed. The spinal epidural space showed signs of inflammation of the adipose tissue, but no pus. A little necrotic material and residues of an old haematoma were removed and the epidural space was lavaged. Specimens taken from the epidural material revealed colonisation with staphylococcus epidermidis, which was sensitive to the broad spectrum antibiotics formerly given to the patient to treat the infection in the left stump. By the next day, all signs of epiduritis had disappeared and the patient recovered completely.
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PMID:[Epiduritis after long-term pain therapy with an epidural catheter--review of the literature with a current case report]. 932 67

This review highlights the advantages of regional anaesthesia techniques, especially of epidural analgesia, for the management of postoperative and posttraumatic pain: excellent pain relief and a high degree of patient satisfaction, even compared to the gold standard of acute pain therapy, i.v. PCA with opioids. Further advantages of epidural analgesia (EA) are discussed, such as early recovery of gastrointestinal function, reduction of postoperative respiratory complications, lower incidence of myocardial ischema, better mobilisation, reduced risk of thromboembolism, lower incidence of chronic pain problems (such as phantom limb pain) etc. Nevertheless, many studies failed to show significant effects on outcome (e.g. mortality). Weighing the risks, costs and benefits of EA, this technique is indicated in case of significant postoperative pain, especially in case of painful mobilisation, in patients with significant pulmonary risk factors (ASA 3 or IV), in patients where an improved perfusion or gastrointestinal motility is deemed essential, and if chronic pain syndromes are common problems that should be prevented (e.g., amputation). For the praxis of epidural analgesia it is emphasised to place the catheter in an appropriate segment to obtain sufficient analgesia without side effects. Organisational structures (such as an acute pain service) and appropriate monitoring allow to continue EA with local anaesthetics and/or opioids on surgical wards. Recommendations are given for the monitoring of EA on surgical wards. Clear cut agreements should define the role of anaesthesiologists, surgeons and nurses in the management of patients treated with postoperative EA on surgical wards.
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PMID:[Epidural analgesia in postoperative pain therapy. A review]. 967 10

In this prospective clinical study we examined the intravenous application of salmon-calcitonin in eight patients with severe phantom limb pain (Visual Analogue Scale = 50-100). The patients presented at the Acute Pain Service (APS) section of the Second Department of Surgery, University of Cologne. Six of eight patients (75%) had no phantom limb pain after 10 days of intravenous treatment with salmon-calcitonin (maximum of five cycles of calcitonin infusion). Systematic follow-up examinations after 3, 6 and 12 months showed long-term success. Patient satisfaction was examined with a numeric rating scale (NRS 1-6) between the single infusion cycles. When patient satisfaction was low, the physician modified the time period or drug dosage between infusions. This study shows good or excellent results in patient satisfaction for six of eight patients (75%). A prospective randomized trial is required to verify the excellent results of intravenous salmon-calcitonin in a larger population. Alternative pharmacological and operative treatments of phantom limb pain are critically reviewed and assessed.
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PMID:[Therapy of phantom pain with salmon calcitonin and effect on postoperative patient satisfaction]. 1042 54

The somatosensory system is capable of functional reorganization following peripheral denervation or training. Studies on human amputees with phantom limb pain provided evidence that these reorganizational changes are modulated through nociceptive input. In the present study we used magnetoencephalographic recordings of six healthy volunteers to assess whether acute pain by itself causes a reorganization of the primary somatosensory cortex. After the induction of an intense experimental pain at the thenar of the left hand by intradermal injection of capsaicin, the extent of the cortical hand representation and the distance between the hand representation and the localization of the lip decreased. A likely mechanism for this acute reorganization is that pain induced hyperresponsiveness of the left thenar to tactile input from neighboring body sites.
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PMID:Functional reorganization of the human primary somatosensory cortex after acute pain demonstrated by magnetoencephalography. 1116 40

The belief that pain is a direct result of tissue damage has dominated medical thinking since the mid 20th Century. Several schools of psychological thought proffered linear causal models to explain non-physical pain observations such as phantom limb pain and the effects of placebo interventions. Psychological research has focused on identifying those people with acute pain who are at risk of transitioning into chronic and disabling pain, in the hope of producing better outcomes.Several multicausal Cognitive Behavioural models dominate the research landscape in this area. They are gaining wider acceptance and some aspects are being integrated and implemented into a number of health care systems. The most notable of these is the concept of Yellow Flags. The research to validate the veracity of such programs has not yet been established.In this paper I seek to briefly summarize the development of psychological thought, both past and present, then review current cognitive-behavioural models and the available supporting evidence. I conclude by discussing these factors and identifying those that have been shown to be reliable predictors of chronicity and those that may hold promise for the future.
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PMID:Psychosocial factors and their role in chronic pain: A brief review of development and current status. 1596 55

Docking the tails of dairy cattle causes mild to moderate behavior changes and physiological indicators of acute pain, but no studies have investigated the possibility that tail docking may lead to chronic pain. In human amputees, an incidence of increased limb surface temperature is associated with phantom limb pain, a central nervous system representation that survives peripheral loss. The objectives of this study were to assess indicators of sensitivity or chronic pain in heifers by using behavioral indicators and thermography. We tested 14 Holstein heifers, 7 docked and 7 intact, from a previous neonatal tail-docking experiment. All 14 animals were videotaped during a test sequence of alternating cold (-9 degrees C), hot (54 degrees C), and neutral packs applied to the underside of the tail. Packs were placed approximately 30.5 cm from the tail head on all animals. A thermal image of the tail was taken using infrared imagery prior to and after temperature sensitivity testing. Docked heifers tended to have greater changes in surface temperatures following the test sequence than did nondocked heifers. In docked heifers, temperatures on the underside of the tail were higher than those at the tip of the tail, both prior to and following the test sequence. Docked heifers also showed substantially higher stomping activity following application of the cold pack. Shifting increased in intact heifers after application of the hot pack, but shifting of the docked heifers did not change. Greater changes were observed in the tail surface temperatures of the docked heifers following temperature manipulation, similar to human amputees who are experiencing phantom limb pain, indicating that similar mechanisms are present in the stump of the docked tail. The behaviors of docked heifers indicated changes in their sensitivity to heat and cold.
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PMID:Short communication: behavioral and physiological indicators of sensitivity or chronic pain following tail docking. 1684 Jun 21

The development of chronic pain after surgery is not an uncommon event. Despite increased attention devoted to this topic in the recent medical literature, little is known about the underlying mechanisms, natural history, and response to therapy of each syndrome. Central nervous system plasticity that occurs in response to tissue injury may contribute to the development of persistent postsurgical pain. As evidence continues to accumulate concerning the role of central sensitization in the prolongation of postoperative pain, many researchers have focused on methods to prevent central neuroplastic changes from occurring through the use of preemptive or preventative analgesic techniques. Effective preventative analgesic techniques may be useful in reducing not only acute pain but also chronic postsurgical pain and disability. This review examines the efficacy of using a variety of analgesic techniques aimed at preventing or reducing chronic pain after surgery. Specific chronic postsurgical pain syndromes evaluated include complex regional pain syndrome, phantom limb pain, chronic donor site pain, post-thoracotomy pain syndrome, and postmastectomy pain syndrome.
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PMID:Chronic pain after surgery: what can we do to prevent it. 1721 15

The spectrum of perioperative pain treatment is discussed in the present review. The analgesic efficacy of various drugs and the dosage methods of administration and side effects reported for them in such reference works as the practical guide on the management of acute pain recently published by the International Association for the Study of Pain (IASP) are described. Effective postoperative analgesia can diminish stress reactions following surgery. Recovery and physical mobilization are improved as the result of adequate treatment. Results obtained in recent studies have demonstrated that primary adaptive hyperalgesia in the peripheral nociceptive area may develop into secondary maladaptive hypersensibility with a high degree of nociceptive excitability and pain. Chronic pain can develop following acute alterations. Increasing nociceptive activity of primary afferents induces alterations in the dorsal horn of the spinal cord. These alterations imply an increase in the excitability of nociceptive neurons, which has been described as neuronal plasticity. Clinical results have demonstrated prevention or delay of acute postoperative pain after injection of local anaesthetics, analgesic premedication or epidural injection of opioids just before the start of surgery. Continuous perioperative spinal analgesia has contributed significantly to the prevention of phantom limb pain in patients undergoing amputation of extremities. The development of pain memory may be prevented as a result of effective acute pain treatment. Several changes to the terminology of acute pain treatment for animal and clinical studies have recently been proposed, including such new terms as preemptive analgesia and pain prevention, which indicate new strategies in the treatment of postoperative pain. The concept of balanced analgesia refers to a strategy for the improvement of analgesic efficacy as a result of a combination of drugs with different local actions on nociception. The combination of systemic analgesics (opioids in low dosages) with nonsteroidal analgesics (e.g. diclofenac or ketorolac) and the combination of regional analgesic procedures with opioids have been shown to be very effective. The peripheral action of morphine offers new options in pain therapy. Different regional analgesic techniques and continuous infusions of local analgesics are described. The synergistic action of low dosages of local anaesthetics (bupivacaine 0.006%) with low dosages of fentanyl 0.0001-0.0002% are of interest for the treatment of obstetric pain and for pain in opioid-tolerant patients. Investigations performed by the author of this review have shown that epidural infusion of highly diluted mixtures of bupivacaine/fentanyl is highly effective in the analgesic treatment of patients undergoing prostatectomy, providing excellent physical mobilization. The potential dangers of drug combinations and contraindications are also discussed. The concept of using balanced analgesia to induce additive or synergistic effects following the administration of analgesic drugs requires further clinical studies.
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PMID:[Perioperative analgesia in adults : The concept of balanced analgesia.]. 1841 99

Phantom limb syndrome (PLS) is a syndrome including stump pain, phantom limb pain and not-painful phantom sensations, which involves a large part of amputee patients and often has devastating effects on their quality of life. The efficacy of standard therapies is very poor. Nerve blocks have been investigated for the treatment and prevention of PLS. Epidural and peripheral blocks limited to the first three postamputation days can only reduce acute pain but cannot prevent the later development of PLS. Recent studies have shown that ambulatory prolonged peripheral nerve block (up to 30 days postamputation) may represent a new possible option to treat phantom pain and prevent the development of PLS and chronic pain.
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PMID:Can neural blocks prevent phantom limb pain? 2530 Mar 83

Acute pain following amputation can be challenging to treat due to multiple underlying mechanisms and variable clinical responses to treatment. Furthermore, poorly controlled preoperative pain is a risk factor for developing chronic pain. Evidence suggests that epidural analgesia and peripheral nerve blockade may decrease the severity of residual limb pain and the prevalence of phantom pain after lower extremity amputation. We present the perioperative analgesic management of a patient with gangrene of the bilateral upper and lower extremities as a result of septic shock and prolonged vasopressor administration who underwent four-limb amputation in a single procedure. A multimodal analgesic regimen was utilized, including titration of preoperative opioid and neuropathic pain agents, perioperative intravenous, epidural and peripheral nerve catheter infusions, and postoperative oral medication titration. More than 8 months postoperatively, the patient has satisfactory pain control with no evidence for phantom limb pain. To our knowledge, there have been no publications to date concerning analgesic regimens in four-limb amputation.
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PMID:Pain Management in Four-Limb Amputation: A Case Report. 2601 96


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