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[Microvascular Decompression to Treat Abducens Nerve Paralysis Caused by Compression of the Anterior Inferior Cerebellar Artery:A Case Report].

Microvascular decompression(MVD)is an effective treatment for hemifacial spasm and trigeminal neuralgia. However, there are few reports regarding its use with abducens nerve palsy. Here, we report the case of a 77-year-old male who presented with diplopia and was admitted to our facility for right abducens nerve palsy. MRI constructive interference in steady-state(CISS)showed that the right anterior inferior cerebellar artery(AICA)was curved in a posterior-superior direction at the beginning of the region of origin, causing compression of the root exit zone of the right abducens nerve. In addition, MRI showed an unruptured fusiform aneurysm(5.3mm×7.1mm)of the vertebral artery(VA)involving the posterior inferior cerebellar artery(PICA). However it was not related to abducens nerve paralysis. The aneurysm was successfully treated with an occipital artery-posterior inferior cerebellar artery(OA-PICA)bypass and clipping of the proximal VA and PICA origin. The position of the offending artery was moved using a Teflon<sup>®</sup> felt fibrin glue and the retrosigmoid transcondylar fossa approach. The patient recovered from abducens nerve paralysis with no new neurological deficit. We emphasize the importance of choosing an appropriate approach as this increases the possibility of treating abducens nerve paralysis in a timely manner.

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Efficacy of acupressure for chronic low back pain: A systematic review.

Establish the utility of acupressure for chronic low back pain (CLBP).

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The effect of ultrasound-guided erector spinae plane block on postsurgical pain: a meta-analysis of randomized controlled trials.

The effect of erector spinae plane block has been evaluated by clinical trials leading to a diversity of results. The main objective of the current investigation is to compare the analgesic efficacy of erector spinae plane block to no block intervention in patients undergoing surgical procedures.

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Methiopropamine and its acute behavioral effects in mice: is there a gray zone in new psychoactive substances users?

Methiopropamine is a structural analog of methamphetamine that is categorized as a novel psychoactive substance. It primarily acts as a norepinephrine-dopamine reuptake inhibitor and, secondarily, as a serotonin reuptake inhibitor. In humans, methiopropamine induces stimulation and alertness and increases focus and energy. However, significant side effects are reported, such as tachycardia, anxiety, panic attacks, perspiration, headache, and difficulty in breathing. To date, little data is available regarding its pharmacodynamic effects, thereby we aimed to investigate the acute in vivo effects induced by this drug on sensorimotor responses, body temperature, pain thresholds, motor activity, and cardiovascular and respiratory systems in CD-1 male mice. We selected a range of doses that correspond to the whole range of human reported use, in order to evaluate the threshold of adverse effects presentation. This study demonstrates that methiopropamine acts as a dopaminergic and noradrenergic stimulating drug and that the highest doses (10-30 mg/kg) impair the visual placing response, facilitate the acoustic and tactile response, induce hypothermia, increase mechanical and thermal analgesia, stimulate locomotor activity, induce motor stereotypies, and strongly affected cardiovascular and respiratory parameters, increasing heart rate, breath rate, and blood pressure but reducing oxygen saturation. On the contrary, lower doses do not show any of those effects. We hypothesize that there is a range of doses that do enhance performance but do not seem hazardous to users: this gap could induce the perception of safety and increase the abuser population.

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Detection and Pharmacokinetics of Etoricoxib in Thoroughbred Horses.

Etoricoxib, a selective inhibitor of cyclooxygenase-2, is used in the treatment of many inflammatory diseases and dental pain in humans. The aim of this study was to determine the pharmacokinetics and metabolism of etoricoxib in horses. Six horses weighing an average of 475 ± 25 kg were administered a single oral dose of etoricoxib at 1 mg/kg body weight. The results show that the drug reached a maximum concentration of 505.2 ± 67.8 ng/mL in 48 minutes after administration. The elimination half-life was calculated to be 10.20 ± 1.30 hours. Mass spectrometric analysis confirmed that etoricoxib is metabolized in horses via the oxidation of its 6'-methyl group to form a hydroxyl methyl etoricoxib which can further be oxidized to form either an acid or be glucuronidated. In addition, the 1'-N terminal of 6'-hydroxymethyl metabolite is oxidized to form the corresponding 1'-N oxide metabolite. The present results have clearly demonstrated that etoricoxib is mainly excreted in urine as metabolites. From these data, it is also possible to postulate a detection time for the metabolites which in turn can assist in the control of illegal use of the drug in horse racing.

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Causes of Death in Patients with Acute and Chronic Myocardial Injury.

Information about causes of death in patients with myocardial injury is limited. The purpose of this study was to explore causes of death in patients with myocardial injury.

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Brachiocephalic vein compression caused by a mediastinal cystic tumor presenting with rapidly progressive upper limb swelling and pain in a patient on hemodialysis with a newly created arteriovenous graft.

A 61-year-old man was hospitalized for creating vascular access for maintenance hemodialysis. Chronic interstitial nephritis was the cause of his end-stage kidney disease. An arteriovenous graft (AVG) was selected because superficial veins in his bilateral upper limbs were not suitable for arteriovenous fistula (AVF). Venography did not show any stenotic lesions in the drainage veins bilaterally. Soon after creation of the AVG, his left arm began to swell. Obstruction of the drainage vessels downstream of the AVG was highly suspected. Magnetic resonance imaging disclosed that the left brachiocephalic vein was compressed at the junction of the superior vena cava by a mediastinal cystic tumor. This tumor was 15 mm in diameter and was tentatively diagnosed as a bronchogenic cyst. While initiating hemodialysis using the AVG, the patient's body weight was decreased by the extracorporeal ultrafiltration method, followed by amelioration of swelling in the left arm. Because the swelling and pain of his left upper limb gradually subsided, we finally decided not to close the AVG and continued hemodialysis using the left AVG. He is currently on maintenance hemodialysis for 3 months with a slightly swollen left upper limb. Central venous obstruction or compression is one of the major causes of ipsilateral limb swelling in patients on hemodialysis. Central venous stenosis caused by previous central catheter insertion is often involved. Our case emphasizes the importance of searching for potential anatomical obstruction of drainage vessels by mediastinal tumors as a potential cause of venous hypertension in hemodialysis patients.

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A Prospective Observational Study of High-Dose Intrathecal Diamorphine in Laparoscopic Bariatric Surgery: a Single-Centre Experience.

Post-operative pain management following laparoscopic bariatric surgery can be challenging. There are concerns regarding the use of opioids. The rate of cardiorespiratory problems following neuraxial opioids is unclear. There is little published data on their use in bariatric surgery. This study aimed to assess technique feasibility, pain outcomes, patient acceptability, and the side effects and complications of a 'high-dose' (1.0 mg) intrathecal diamorphine technique for patients undergoing primary laparoscopic bariatric surgery.

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Are workers on board vessels involved with chemicals from treated ballast water sufficiently protected? – A decadal perspective and risk assessment.

Ballast Water Managements Systems (BWMS) installed on vessels may use Active Substances (AS) to inactivate organisms. This paper provides new insights in the global issue of noxious Disinfection By-Products (DBP) produced with primarily oxidant-based BWMS, and the risk assessment for workers, including port State control officers, while performing tasks on a vessel that involve exposure to treated ballast water. The Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection – Ballast Water Working Group (GESAMP-BWWG) plays a role in the certification process of BWMS that make use of AS evaluating potential negative effects. All BWMS that passed GESAMP-BWWG Final Approval until mid 2019 were analyzed providing an overview of chemicals in the treated ballast water before and after neutralization. The ballast tank cleaning scenario, the sampling scenario, and the ballast tank inspection scenario all showed elevated human health risks using the Derived Minimal Effect Levels approach. The most critical exposure occurs in the ballast tank cleaning scenario through the inhalation of volatile DBP, such as tribromomethane. This substance may cause acute effects such as headache, dizziness and also has carcinogenic properties. The two risk reducing options available in the GESAMP-BWWG Tier 2 calculations were compared, one being mitigation measures such as protective gloves and coveralls, the other option is taking into account a time correction factor. The results showed that the trihalomethanes in air are most problematic, however, there is a possibility that the calculated values may be overestimated as generally worst case assumptions were used.

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Do Longitudinally-Collected Symptom Scores Predict Time to Death in Advanced Breast Cancer: A Joint Modelling Analysis.

Advanced breast cancer patients have low rates of survival that can be associated with symptom burden.

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