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https://www.readbyqxmd.com/read/28219811/stress-echocardiography-in-patients-who-experienced-mechanical-ventilation-weaning-failure
#1
Manuel Ruiz-Bailén, Jesús Cobo-Molinos, Ana Castillo-Rivera, María Dolores Pola-Gallego-de-Guzmán, Antonio Cárdenas-Cruz, Antonio Martínez-Amat, María Sevilla-Martínez, Clara Hernández-Caballero
INTRODUCTION: Critically ill patients may suffer varying degrees of temporary myocardial dysfunction during respiratory weaning that could play an important role in weaning failure. OBJECTIVES: In this study, we tried to assess the existence of temporary diastolic dysfunction during respiratory weaning. METHODS: Inclusion period is from 2006 to 2015. In this study, we included 181 ventilated patients with cardiogenic shock that were being weaned from mechanical ventilation...
January 18, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28203025/-trigemino-cardiac-reflex-in-skull-base-surgery
#2
H Z Duan, Y Zhang, L Li, J Y Zhang, Z Q Yi, S D Bao
OBJECTIVE: To explore the mechanism, clinical features, and prognosis of Trigemino-cardiac reflex (TCR) during skull base operations. METHODS: A retrospective analysis was performed on 291 patients with skull base disease from Jan. 2009 to Oct. 2015 in Peking University First Hospital. By reviewing the patients' operative data and anaesthetic electrical record, and we picked out all the patients who suffered from TCR during the operation and analyzed their surgical procedures, clinical features, influence factors, and prognosis...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28164084/comparison-of-phenylephrine-and-ephedrine-in-treatment-of-spinal-induced-hypotension-in-high-risk-pregnancies-a-narrative-review
#3
REVIEW
Sasima Dusitkasem, Blair H Herndon, Monsicha Somjit, David L Stahl, Emily Bitticker, John C Coffman
PURPOSE: To compare maternal and fetal effects of intravenous phenylephrine and ephedrine administration during spinal anesthesia for cesarean delivery in high-risk pregnancies. SOURCE: An extensive literature search was conducted using the US National Library of Medicine, MEDLINE search engine, Cochrane review, and Google Scholar using search terms "ephedrine and phenylephrine," "preterm and term and spinal hypotension," "preeclampsia and healthy parturients," or "multiple and singleton gestation and vasopressor...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28157413/exploring-the-new-phenomena-of-home-made-extraction-and-injection-of-ephedra-plant-product-in-georgia
#4
David Otiashvili, Irma Kirtadze, Dessa Bergen-Cico
BACKGROUND: Since the end of 2015, reports by service providers have indicated a new trend in kitchen (homemade) production of an injection drug prepared from an ephedrine-containing conifer bush that is indigenous to the region. OBJECTIVE: The aim of this report is to describe an emerging new homemade psychoactive drug synthesized from the ephedra plant, and the drug consumption methods associated with its' use in the Eurasia. METHODS: Focus groups conducted with 16 people, self-identified as injection drug users (IDU's) who reported at least one incidence of ephedra preparation injection during the previous 30-days...
February 3, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28154331/clinical-research-testing-the-usefulness-of-ephedrine-alkaloids-free-ephedra-herb-extract
#5
Hiroshi Odaguchi
 We aimed to test the clinical usefulness of ephedrine alkaloids-free Ephedra Herb extract (EFE), which has been proven to be effective and safe in animal studies. First, we performed a safety trial with 7 healthy volunteers, and increased white blood cell counts were observed in 2. However, it was unknown whether this observation was a result of EFE administration. Then, we implemented a controlled, double-blind, randomized crossover trial as the second safety trial for EFE. The trial was conducted under strict conditions, and the participants were managed in the hospital and monitored using an increased number of endpoints...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28154330/analgesic-effects-and-side-effects-of-ephedra-herb-extract-and-ephedrine-alkaloids-free-ephedra-herb-extract
#6
Yoshinori Kobayashi
 Ephedra Herb is classified "pungent, slightly bitter, and warm" in tastes and natures, and is used to provide warmth to the body, dispel coldness, remove dampness, and reduce pain. Similar herbs are "pungent and hot" chili peppers, "pungent and hot" evodia fruit," "pungent and warm" ginger, "pungent and hot" processed ginger, "pungent and hot" Zanthoxylum fruit, etc. These herbs are prescribed to provide heat to the outer or inner body. Some pungent components such as capsaicin, evodiamine, gingerol, and shogaol are known to be activators of transient receptor potential vanilloid 1 (TRPV1)...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28154329/the-pharmacological-actions-of-ephedrine-alkaloids-free-ephreda-herb-extract-and-preparation-for-clinical-application
#7
Sumiko Hyuga
 Ephedra Herb is defined in the 17th edition of the Japanese Pharmacopoeia as the terrestrial stem of Ephedra sinica STAPF., Ephedra intermedia SCHRENK et C.A. MEYER, or Ephedra equisetina BUNGE (Ephedraceae) which contains more than 0.7% ephedrine alkaloids (ephedrine and pseudoephedrine). The primary effects and adverse effects of Ephedra Herb are traditionally believed to be mediated by ephedrine alkaloids. We recently reported that Ephedra Herb extract (EHE) exhibits antimetastatic and antitumor effects by suppressing the hepatocyte growth factor-c-Met signaling pathway through the inhibition of c-Met tyrosine kinase activity...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28154328/efficient-preparation-of-ephedrine-alkaloids-free-ephedra-herb-extract-and-its-antitumor-effect-and-putative-marker-compound
#8
Naohiro Oshima
 Ephedra Herb is a crude drug for the treatment of headache, bronchial asthma, nasal inflammation, and the common cold. Although it has been considered that ephedrine alkaloids (EAs) are the principal active ingredients of Ephedra Herb, EAs are known to induce palpitations, hypertension, insomnia, and dysuria as major side effects. Therefore, the administration of EAs-containing drugs to patients with cardiovascular-related diseases is strongly contraindicated. Previously, we isolated herbacetin 7-O-neohesperidoside from Ephedra Herb...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28154327/characterization-of-phenolic-constituents-from-ephedra-herb-extract
#9
Yoshiaki Amakura
 Ephedra Herb (Japanese name: mao) is defined as the terrestrial stem of Ephedra species. It is one of the most important crude drugs in Kampo prescriptions such as maoto, kakkonto, and shoseiryuto. The traditional biological properties of Ephedra Herb are mainly attributable to ephedrine alkaloids. Recently, our research group has found that Ephedra Herb extract also shows alkaloid-independent pharmacological action; therefore, we focused on polyphenols, other active ingredients of Ephedra Herb extract. Reports on the constituents of the extract other than ephedrine alkaloids are limited, although condensed tannins of procyanidin A-type have been found in some Ephedra species...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28154325/our-approaches-to-the-new-drug-application-of-ephedrine-alkaloids-free-ephedra-herb-extract-efe-toward-breakthrough-in-natural-medicines-in-japan
#10
Yukihiro Goda
No abstract text is available yet for this article.
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28139893/chemometrics-assisted-chromatographic-fingerprinting-an-illicit-methamphetamine-case-study
#11
Nafiseh Shekari, Maryam Vosough, Kourosh Tabar Heidar
The volatile chemical constituents in complex mixtures can be analyzed using gas chromatography with mass spectrometry. This analysis allows the tentative identification of diverse impurities of an illicit methamphetamine sample. The acquired two-dimensional data of liquid-liquid extraction was resolved by multivariate curve resolution-alternating curve resolution to elucidate the embedded peaks effectively. This is the first report on the application of a curve resolution approach for chromatogram fingerprinting to identify particularly the embedded impurities of a drug of abuse...
January 31, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28132112/combining-mosced-with-molecular-simulation-free-energy-calculations-or-electronic-structure-calculations-to-develop-an-efficient-tool-for-solvent-formulation-and-selection
#12
Courtney E Cox, Jeremy R Phifer, Larissa Ferreira da Silva, Gabriel Gonçalves Nogueira, Ryan T Ley, Elizabeth J O'Loughlin, Ana Karolyne Pereira Barbosa, Brett T Rygelski, Andrew S Paluch
Solubility parameter based methods have long been a valuable tool for solvent formulation and selection. Of these methods, the MOdified Separation of Cohesive Energy Density (MOSCED) has recently been shown to correlate well the equilibrium solubility of multifunctional non-electrolyte solids. However, before it can be applied to a novel solute, a limited amount of reference solubility data is required to regress the necessary MOSCED parameters. Here we demonstrate for the solutes methylparaben, ethylparaben, propylparaben, butylparaben, lidocaine and ephedrine how conventional molecular simulation free energy calculations or electronic structure calculations in a continuum solvent, here the SMD or SM8 solvation model, can instead be used to generate the necessary reference data, resulting in a predictive flavor of MOSCED...
January 28, 2017: Journal of Computer-aided Molecular Design
https://www.readbyqxmd.com/read/28130905/characterization-of-complexes-between-phenethylamine-enantiomers-and-%C3%AE-cyclodextrin-derivatives-by-capillary-electrophoresis-determination-of-binding-constants-and-complex-mobilities
#13
Joachim Wahl, Takayuki Furuishi, Etsuo Yonemochi, Lorenz Meinel, Ulrike Holzgrabe
To optimize chiral separation conditions and to improve the knowledge of enantioseparation it is important to know the binding constants K between analytes and cyclodextrins and the electrophoretic mobilities of the temporarily formed analyte-cyclodextrin-complexes. K values for complexes between 8 phenethylamine enantiomers, namely ephedrine, pseudoephedrine, methylephedrine and norephedrine, and 4 different β-cyclodextrin derivatives were determined by affinity capillary electrophoresis. The binding constants were calculated from the electrophoretic mobility values of the phenethylamine enantiomers at increasing concentrations of cyclodextrins in running buffer...
January 28, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28128660/cardiac-failure-in-a-trisomy-9-patient-undergoing-anesthesia-a-case-report
#14
Cara J Riley, Timothy Moore, Lauren Eagelston, Dale Burkett, Scott Auerbach, Richard J Ing
A 27-year-old female with Trisomy 9 mosaicism presented to Children's Hospital Colorado for outpatient dental surgery under general anesthesia. The patient's past medical history was also significant for premature birth, gastroesophageal reflux, scoliosis and kyphosis, obesity, and developmental delay. Per her mother's report, the patient had no cardiac issues. She had undergone multiple previous general anesthetics, some of which documented respiratory complications such as laryngospasm, bronchospasm, and possible aspiration...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/28049947/stabilization-of-ephedrine-alkaloid-content-in-ephedra-sinica-by-selective-breeding-and-stolon-propagation
#15
Hajime Hiyama, Aya Ozawa, Hiroaki Kumazawa, Osami Takeda
The Ephedra herb, which has been used in Kampo medicines, originates from terrestrial stems of Ephedra species. It is important to establish cultivation methods and cultivars to secure a stable supply of the Ephedra herb that would meet the quality standards for the ephedrine alkaloids content. In this study, we first grew Ephedra sinica plants derived from seeds in the field for 5 years. Then, for selective breeding of cultivars that could meet the quality standards for the ephedrine alkaloids content, we measured the content of total alkaloids (TAs), ephedrine (Eph), and pseudoephedrine (PEph) in individual plants derived from seedlings and grown for 4 years in the field...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28040125/preoperative-measurement-of-maternal-abdominal-circumference-relates-the-initial-sensory-block-level-of-spinal-anesthesia-for-cesarean-section-an-observational-study
#16
Chi-Hang Kuok, Chung-Hsin Huang, Pei-Shan Tsai, Yuan-Pi Ko, Wei-Shih Lee, Yung-Wei Hsu, Fang-Yu Hung
OBJECTIVE: Lumbosacral cerebrospinal fluid volume is decreased as the enlarging uterus compresses the inferior vena cava during pregnancy. A subsequent greater cephalad spread of sensory blockade is observed. Gravid uterus plays a crucial role in affecting the spinal anesthesia level. We hypothesized that maternal abdominal circumference can reflect compressive effect of the uterus and investigated the relationship between abdominal circumference and the level of sensory blockade, and incidence of hypotension following spinal anesthesia with hyperbaric bupivacaine in term parturients...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28033585/carbon-coated-magnetic-nanoparticles-as-a-novel-magnetic-solid-phase-extraction-adsorbent-for-simultaneous-extraction-of-methamphetamine-and-ephedrine-from-urine-samples
#17
Arezou Taghvimi, Hamed Hamishehkar
This paper develops a highly selective, specific and efficient method for simultaneous determination of ephedrine and methamphetamine by a new carbon coated magnetic nanoparticles (C/MNPs) as a magnetic solid phase extraction (MSPE) adsorbent in biological urine medium. The characterization of synthesized magnetic nano adsorbent was completely carried out by various characterization techniques like Fourier transform infrared (FT-IR) spectroscopy, powder x-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM)...
January 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28007405/ephedrine-treatment-for-autoimmune-myasthenia-gravis
#18
Alexander F Lipka, Charlotte Vrinten, Erik W van Zwet, Kirsten J M Schimmel, Martina C Cornel, Marja R Kuijpers, Yechiel A Hekster, Stephanie S Weinreich, Jan J G M Verschuuren
We studied the effect and safety of ephedrine as add-on treatment for patients with myasthenia gravis with acetylcholine receptor antibodies (AChR MG), who do not sufficiently respond to standard treatment. Four patients with AChR MG were included in a placebo-controlled, double-blind, and randomised, multiple crossover series of n-of-1 trials. Each n-of-1 trial consisted of 3 cycles, in which two 5-day intervention periods were followed by 2 days washout. In each cycle, ephedrine 50 mg daily in 2 doses was compared with placebo in the alternate treatment period...
March 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/27995106/comparing-prophylactic-effect-of-phenylephrine-and-ephedrine-on-hypotension-during-spinal-anesthesia-for-hip-fracture-surgery
#19
Rahman Abbasivash, Shahryar Sane, Mitra Golmohammadi, Shahram Shokuhi, Fereshteh Danaye Toosi
BACKGROUND: Spinal anesthesia is an accepted technique in hip fracture surgery and prevention of this complication by sympathomimetic agents is of potential clinical significance. The aim of this study is to compare the effect of prophylactic phenylephrine versus ephedrine in the prevention of hypotension during spinal anesthesia in hip fracture surgery. MATERIALS AND METHODS: Ninety-two patients undergoing hip fracture surgery with the American Society of Anesthesiologists I and II were randomized to receive prophylaxis with ephedrine or phenylephrine immediately before the spinal anesthesia...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/27992166/identification-of-isomeric-ephedrines-by-cold-ion-uv-spectroscopy-toward-practical-implementation
#20
Vladimir Kopysov, Alexander Makarov, Oleg V Boyarkin
Ephedrine and pseudoephedrine are stimulant drugs whose use is prohibited in athletic competition by the World Anti-Doping Agency (WADA) at very different threshold doping violation concentrations. We use a recently developed universal approach that integrates UV photofragmentation spectroscopy of cold ions with Orbitrap mass spectrometry (MS) for highly selective and highly sensitive identification of these diastereomers. Both species can be selectively detected at a solution concentration of a few tens of ng/mL, which is almost 3 orders of magnitude lower than the threshold concentration required by WADA...
December 21, 2016: Analytical Chemistry
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