Background: The administration of epidural and spinal clonidine has demonstrated an antinociceptive effect in animals and humans. For that reason, its spinal administration has been proposed as an adjuvant in chronic pain management. However, there is limited information about its possible neurotoxic effect after its continuous neuraxial administration.
Last. M. Backonja(UW: University of Wisconsin-Madison)H-Index: 16
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: Intraspinal clonidine is an effective adjunct to intrathecal/epidural opioid administration. We report a case of neuropathic pain treated with intraspinal analgesics in which depression, insomnia, and night terrors developed in association with intraspinal clonidine.
Neuraxial administration of nonsteroid antiinflammatory drugs has been suggested as an alternative in the management of intractable pain, but there is little evidence that the neurotoxic effects of indomethacin by this route of administration have been evaluated. In this study, we evaluated histological neurotoxicity of indomethacin after its subarachnoid administration in guinea pigs. The hypothesis tested was “Does subarachnoid administration of indomethacin produce damage in the spinal cord o...
#2Marie T. Aouad(AUB: American University of Beirut)H-Index: 25
Last. Anis Baraka(AUB: American University of Beirut)H-Index: 46
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Background: The purpose of this study was to compare the onset and duration of sensory and motor block, as well as the hemodynamic changes and level of sedation, following intrathecal bupivacaine supplemented with either dexmedetomidine or clonidine. Methods: In a prospective, double-blind study, 60 patients undergoing transurethral resection of prostate or bladder tumor under spinal anesthesia were randomly allocated to one of three groups. Group B received 12 mg of hyperbaric bupivacaine, grou...
: A substantial number of patients with cancer suffer considerable pain at some point during their disease, and approximately 25% of cancer patients die in pain. Providing effective pain management for patients with severe pain that impacts quality of life can present the oncologist or palliative care specialist with complex clinical challenges that often require multifaceted therapeutic measures. This paper presents multidisciplinary consensus-based recommendations for the treatment of intracta...
Aim of study: To evaluate the effects of different doses of clonidine administered systemically or spinally in combination with local anaesthetics on sensory and motor block intraoperatively, on pain relief postoperatively, and on the incidence of postoperative alcohol withdrawal syndrome (AWS) in alcohol abusers.Patients and methods: A total 285 patients were included in five studies. In two studies, oral clonidine (150 and 300 µg) or intrathecal clonidine (100 and 150 µg) was combined with loc...
Background:Spinally administered clonidine produces analgesia via α2-adrenergic receptors. The analgesic potency of clonidine and its dependency on muscarinic acetylcholine receptors increase in rats after nerve injury. The authors hypothesized that these changes reflect greater acetylcholine releas
Preservative-free 2-chloroprocaine (2-CP) is being investigated for short-acting spinal anesthesia. Clonidine improves the quality of spinal bupivacaine and ropivacaine, but in traditional doses (1-2 μg/kg) it produces systemic side effects. It has not been studied in combination with 2-CP. In this double-blind, randomized crossover study, we compared spinal 2-CP (30 mg) with and without clonidine (15 μg) in eight volunteers. Pinprick anesthesia, motor strength, tolerance to electrical stimulati...
BACKGROUND: The chronic pain relieving effects following spinal administration of clonidine are probably connected to alpha2-adrenoreceptor-induced augmented synthesis of nitric oxide (NO) in the spinal cord. In contrast, when acute pain is considered, the possible role of NO is still speculative. The aim of the present study was to explore the role of NO in acute pain relief following intraspinal administration of clonidine. METHODS: We used the mouse tail-flick model of acute pain. Spinal inje...
Abstract Clonidine is frequently added to opioids in implantable intrathecal pumps for the management of chronic pain. In such devices, a small non-retrievable volume is always present in the reservoir, and its effect on drug stability is unknown. Furthermore, stability of clonidine, when mixed with hydromorphone, has not been previously determined. This study examined the stability of clonidine when co-administered with hydromorphone in implanted intrathecal pumps. Samples of hydromorphone-clon...
Intrathecal infusion is often performed using drug combinations. This study was conducted to evaluate the stability of the admixture of morphine sulfate, bupivacaine hydrochloride, and clonidine hydrochloride when used in an implantable pump under simulated clinical use conditions. SynchroMed implantable pumps were filled with an admixture and incubated at 37°C for a period of 90 days. Drug admixture stored in glass vials at 4°C and at 37°C served as controls. Samples which included pump reservo...
#2Jianguo Cheng(Cleveland Clinic Lerner Research Institute)
Interventional therapies are critical and integral parts of a multipronged strategy for pain relief and rehabilitation in patients with complex regional pain syndrome (CRPS). These therapies include intravenous drug infusion to a specific limb or as a systemic drug delivery route, sympathetic blocks, and neuromodulation modalities, such as peripheral nerve stimulation, dorsal root ganglion stimulation, spinal cord stimulation, and intrathecal drug delivery. This chapter focuses on the clinical e...
BACKGROUND Intrathecal fentanyl in spinal anesthesia improves intra- and postoperative analgesia. Dexmedetomidine is a fascinating adjuvant with regards to neuraxial anesthesia in children experiencing surgery for abdominal malignancy. PATIENTS AND METHODS After endorsement by the institutional reviewing board (IRB) and guardians' written informed consent, this research was carried out on 60 pediatric malignancy patients scheduled for major abdominal surgery. Children were randomly distributed i...
Background: Spinal administration of dexmedetomidine has been proposed as an adjuvant in spinal anesthesia. However, there is limited information about its possible neurotoxic effect after its neuraxial administration. Potential spinal neurotoxicity should be investigated in animals before administering drugs through the spinal cord. Our aim was to investigate the neurotoxic effects of intrathecal dexmedetomidine in rats. Methods: Two groups were performed: the dexmedetomidine (D) group (n = 10)...
Introduction Pain treatment is best performed when a patient-centric, safety-based philosophy is used to determine an algorithmic process to guide care. Since 2007, the International Neuromodulation Society has organized a group of experts to evaluate evidence and create a Polyanalgesic Consensus Conference (PACC) to guide practice. Methods The current PACC update was designed to address the deficiencies and innovations emerging since the previous PACC publication of 2012. An extensive literatur...
Summary Epidural blood patch is the gold standard treatment for post-dural puncture headache, although hydroxyethyl starch may be a useful alternative to blood if the latter is contraindicated. The aim of this experimental study was to assess whether hydroxyethyl starch given via an indwelling intrathecal catheter resulted in clinical or histopathological changes suggestive of neurotoxicity. The study was conducted in rats that were randomly allocated to receive three 10-μl injections on consecu...
#2Hans A. Aukes(Albert Schweitzer Hospital)H-Index: 4
Last. Ismail Gültuna(Albert Schweitzer Hospital)H-Index: 7
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Objective The objective of this study is to investigate the efficacy of long-term follow-up of subcutaneous stimulation (SubQ) as an additional therapy for patients with failed back surgery syndrome (FBSS) with chronic refractory pain, for whom spinal cord stimulation (SCS) alone was unsuccessful in treating low back pain. Study Design Prospective case series. Materials and Methods FBSS patients with leg and/or low back pain whose conventional therapies had failed, received a combination of SCS ...
Outpatient and short-stay plastic surgery procedures have increased recently up to 457% [1] due to lower prices, global availability of plastic surgeons, better and safer anaesthetic techniques. This exponential growth has been increased by greater information in the media, most notably by means of the enlightenment shown in the internet. Every day more complex patients force anaesthesiologists to develop better techniques using multimodal approaches before, during and after anaesthesia. Nowaday...
Clonidine was synthesized in 1962 as nasal decongestant, and marketed as antihypertensive in 1972. Bloor and Flacke in 1982 [1] demonstrated in mongrel dogs that intravenous clonidine 5 and 20 μg/kg decreased halothane MAC by 42% and 48% respectively. Since then, clonidine has been used by anaesthesiologists as an anaesthetic adjunct to provide increased perioper‐ ative cardiovascular and sympathoadrenal stability, to enhance general and regional anaes‐ thesia, as well as sedation and analgesia....
Objectives. To compare the analgesic efficacy of intrathecal clonidine and fentanyl added to bupivacaine after cesarean section. Methods. Ninety patients scheduled for cesarean section under spinal anesthesia were randomly allocated to one of the three following groups to receive bupivacaine 10 mg combined with 75 µg clonidine (group C), bupivacaine 10 mg combined with 0.5 mL fentanyl (group F), and bupivacaine 10 mg combined with 0.5 mL distilled water (group P), intrathecally. The time to firs...
Introduction: The use of intrathecal (IT) infusion of analgesic medications to treat patients with chronic refractory pain has increased since its inception in the 1980s, and the need for clinical research in IT therapy is ongoing. The Polyanalgesic Consensus Conference (PACC) panel of experts convened in 2000, 2003, and 2007 to make recommendations on the rational use of IT analgesics based on preclinical and clinical literature and clinical experiences. Methods: The PACC panel convened again i...