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https://www.readbyqxmd.com/read/29774743/chiral-cryptates-derived-from-a-hexa-azamacrocycle
#1
Aleksandra Gerus, Katarzyna Ślepokura, Jarosław Panek, Aleksandra Turek, Jerzy Lisowski
The reactions of hexaazamacrocycle 1 with 2,6-bis(bromomethyl)pyridine or 2,6-bis[(tosyloxy)methyl)]pyridine in the presence of appropriate carbonates result in the formation of derivatives of cryptand 6 - enantiopure azacryptates of sodium and potassium. Crystal structures of these compounds indicate interaction of a metal ion with four pyridine nitrogen atoms and four tertiary amine atoms. The competition reactions monitored by NMR spectroscopy indicate preferential binding of Na+ over K+ as well as higher affinity of 6 for Na+ in comparison with the [2...
May 18, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29770643/use-of-the-bispectral-index-to-predict-eye-position-of-children-during-general-anesthesia
#2
Koung Hoon Kook, Seung Ah Chung, Suyoun Park, Dae Hee Kim
PURPOSE: To assess the relationship between eye position and anesthesia depth using the bispectral index (BIS) value, a parameter derived from electroencephalography data. METHODS: We investigated the relationship between BIS value and eye position in 32 children who underwent surgery for epiblepharon under general anesthesia. BIS values were recorded continuously throughout the procedure (from induction to awakening). Eye positions were video-recorded and analyzed after surgery...
May 15, 2018: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/29761891/processed-electroencephalogram-and-evoked-potential-techniques-for-amelioration-of-postoperative-delirium-and-cognitive-dysfunction-following-non-cardiac-and-non-neurosurgical-procedures-in-adults
#3
REVIEW
Yodying Punjasawadwong, Waraporn Chau-In, Malinee Laopaiboon, Sirivimol Punjasawadwong, Pathomporn Pin-On
BACKGROUND: Postoperative delirium (POD) and postoperative cognitive dysfunction (POCD) may complicate a patient's postoperative recovery in several ways. Monitoring of processed electroencephalogram (EEG) or evoked potential (EP) indices may prevent or minimize POD and POCD, probably through optimization of anaesthetic doses. OBJECTIVES: To assess whether the use of processed EEG or auditory evoked potential (AEP) indices (bispectral index (BIS), narcotrend index, cerebral state index, state entropy and response entropy, patient state index, index of consciousness, A-line autoregressive index, and auditory evoked potentials (AEP index)) as guides to anaesthetic delivery can reduce the risk of POD and POCD in non-cardiac surgical or non-neurosurgical adult patients undergoing general anaesthesia compared with standard practice where only clinical signs are used...
May 15, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29761180/covalent-switching-involving-divinylbenzene-ligands-within-3d-coordination-polymers-indicated-by-changes-in-fluorescence
#4
Ni-Ya Li, Dong Liu, Brendan F Abrahams, Jian-Ping Lang
Reversible cycloaddition reactions between 1,4-bis[2-(3-pyridyl)ethenyl]benzene and its photodimers were performed within a pair of three-dimensional coordination polymers with retention of single crystal character. In each case, switching between two crystalline forms could be followed by monitoring the flourescence behaviour.
May 15, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29755997/bispectral-index-in-poisoning-cases-with-multi-drug-ingestion-a-predictable-role-for-early-endotracheal-intubation
#5
Nastaran Eizadi-Mood, Leila Halakoei, Ahmad Yaraghi, Mitra Jabalameli, Rihanak Talakoub, Ali Mohammad Sabzghabaee
Objective: Bispectral index (BIS) is one of the several methods used to monitor the depth of anesthesia. Poisoning with ingestion of different drugs is one of the most common poisonings that have different clinical signs from drowsiness to coma. This study was performed to compare the BIS index number in poisoned patients with multi drugs ingestion with or without the need for endotracheal intubation. Methods: This cross-sectional study was performed on poisoned patients with ingestion of different drugs referring to Clinical Toxicology Department of Noor University Hospital, Isfahan, Iran...
January 2018: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/29746721/melatonin-for-the-promotion-of-sleep-in-adults-in-the-intensive-care-unit
#6
REVIEW
Sharon R Lewis, Michael W Pritchard, Oliver J Schofield-Robinson, Phil Alderson, Andrew F Smith
BACKGROUND: Patients in the intensive care unit (ICU) experience sleep deprivation caused by environmental disruption, such as high noise levels and 24-hour lighting, as well as increased patient care activities and invasive monitoring as part of their care. Sleep deprivation affects physical and psychological health, and patients perceive the quality of their sleep to be poor whilst in the ICU. Artificial lighting during night-time hours in the ICU may contribute to reduced production of melatonin in critically ill patients...
May 10, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29739183/comparison-between-cerebral-state-index-and-bispectral-index-during-desflurane-anesthesia
#7
Sang-Hyeon Cho, Sung-Su Kim, Dong-Min Hyun, Hyeong-Suk Yoon, JungWoo Han, Jin Sun Kim
Background: Cerebral state index (CSI) is an anesthesia depth monitor alternative to bispectral index (BIS). Published comparative studies have used propofol or sevoflurane. However, studies using desflurane have not been reported yet. Different volatile anesthetics have different EEG signatures. The performance of CSI may be different in desflurane anesthesia. Therefore, the objective of this study was to compare CSI and BIS during desflurane anesthesia. Methods: Thirty-three patients were recruited...
May 9, 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29736298/quantitative-determination-of-erlotinib-in-human-serum-using-competitive-enzyme-linked-immunosorbent-assay
#8
Yuta Yamamoto, Tetsuya Saita, Yutaro Yamamoto, Masashi Shin
A selective and sensitive competitive enzyme-linked immunosorbent assay (ELISA) method was developed and validated for the quantification of erlotinib in 50 µL of samples of human serum. Anti-erlotinib serum was obtained by immunizing mice with an antigen conjugated with bovine serum albumin and 3,4-bis(2-methoxyethoxy)benzoic acid using the N -succinimidyl ester method. Enzyme labeling of erlotinib with horseradish peroxidase was similarly performed using 3,4-bis(2-methoxyethoxy)benzoic acid. A simple competitive ELISA for erlotinib was developed using the principle of direct competition between erlotinib and the enzyme marker for anti-erlotinib antibody, which had been immobilized on the plastic surface of a microtiter plate...
April 2018: Journal of Pharmaceutical Analysis
https://www.readbyqxmd.com/read/29733884/probabilistic-dietary-risk-assessment-of-triazole-and-dithiocarbamate-fungicides-for-the-brazilian-population
#9
Andreia Nunes Oliveira Jardim, Denise Carvalho Mello, Alessandra Page Brito, Hilko van der Voet, Polly E Boon, Eloisa Dutra Caldas
Residue data for triazoles (TR) and dithiocarbamates (DT) in 30,786 samples of 30 foods were obtained from mainly two national monitoring programs, and consumption data from a national survey conducted among persons aged 10 years or older About 16% of the samples contained TR, mainly grape (53.5%), and 16.2% contained DT, mainly apple (59.3%). Flusilazole was the index compound for the acute effects of TR for women of child-bearing-age (cranium-facial malformation and skeletal variation), cyproconazole for the chronic effects of TR (hepatoxicity), and ethylene-bis-dithitiocarbamates (EBDC) for DT (thyroid toxicity)...
May 4, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29731820/multimodal-monitoring-combined-with-hypothermia-for-the-management-of-severe-traumatic-brain-injury-a-case-report
#10
Jun-Hui Chen, Yi-Nong Xu, Meng Ji, Pei-Pei Li, Li-Kun Yang, Yu-Hai Wang
Traumatic brain injury (TBI) is a prominent public health issue that has a significant negative impact on patients and their family members. It is the leading cause of mortality and disability among young (below 50 years old) individuals. Intracranial hypertension (ICH) remains the single most difficult therapeutic challenge for the management of severe TBI. Therapeutic hypothermia may reduce intracranial hypertension and improve patient outcomes; however, the use of hypothermia is controversial. It has been reported that therapeutic hypothermia elicits no therapeutic benefit for patients with TBI...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29719961/an-x-ray-and-neutron-reflectometry-study-of-iron-corrosion-in-seawater
#11
Mary H Wood, Thomas J Wood, Rebecca J L Welbourn, Jeffrey Poon, David C Madden, Stuart M Clarke
The corrosive breakdown of thin iron films supported on silicon substrates under a number of conditions is presented-in particular to understand better how iron, and hence ferritic steel, behaves in a salty water environment. A combination of X-ray and neutron reflectometry was used to monitor the structures of both the metal and oxide surface layers and also organic corrosion inhibitors adsorbed at the iron/aqueous interface. A range of behaviour in seawater was observed, including complete dissolution and void formation under the metal surface...
May 2, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29702470/fabrication-of-a-promising-immobilization-platform-based-on-electrochemical-synthesis-of-a-conjugated-polymer
#12
Ece Buber, Saniye Soylemez, Yasemin A Udum, Levent Toppare
Since conjugated polymers are an important class of materials with remarkable properties in biosensor applications, in this study, a novel glucose biosensor based on a conjugated polymer was fabricated via the electropolymerization of the monomer 10,13-bis(4-hexylthiophen-2-yl)dipyridol[3,2-a:2',3'-c]phenazine onto a graphite electrode surface. Glucose oxidase (GOx) was used as the model biological recognition element. As a result of the enzymatic reaction between GOx and glucose, the glucose amount was determined by monitoring the change in the oxygen level associated with substrate concentration via the amperometric detection technique...
April 22, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29687116/pulsed-laser-induced-heat-transfer-from-a-phthalocyanine-based-thin-film-to-a-bi-al-substituted-dyig-substrate-photothermal-demagnetization-observed-by-magnetic-circular-dichroism-and-numerical-analysis
#13
Masanobu Karasawa, Kazuyuki Ishii
We have investigated the demagnetization of a ferrimagnetic substrate, Bi, Al-substituted dysprosium iron garnet (Bi0.8Dy2.2Fe4.3Al0.7O12), based on selective pulsed laser irradiation of a molecular thin film consisting of μ-oxo-bis[hydroxyl{2,9(or 10),16(or 17),23(or 24)-tetra-tert-butylphthalocyanato}silicon] ((SiPc)2) and poly(vinylidene fluoride), and succeeded in reproducing photothermal energy transfer from a molecular thin film to an inorganic magnetic substrate in a submicrometer-order and a submicrosecond time scale using numerical analysis...
April 24, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29684988/influence-of-electrocautery-induced-electromagnetic-interference-on-quantitative-electroencephalographic-monitoring-of-hypnosis-during-general-anesthesia-comparison-between-the-adms%C3%A2-and-the-bis-vistatm
#14
Dae-Hee Kim, Ji-Young Yoo, Jong-Yeop Kim, Soo-Hwan Ahn, Seongsu Kim, Sang-Kee Min
Background: Hypnosis monitors analyze small-amplitude electrical signals transmitted from the brain that could be exposed to the electromagnetic field that occurs around the body during electrocautery (ECT). We investigated the influence of ECT on hypnosis monitoring during anesthesia. Methods: We simultaneously monitored BIS and uCON during 50 gynecologic oncology surgeries. During the episodes of ECT, we compared the absolute difference (a-Diff) between the baseline index and the most deviated index after ECT over either 30-60 s (ECT30-60) or more than 60 s (ECT > 60) between the monitors...
April 24, 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29682675/novel-zinc-ii-bis-dipyrromethenate-doped-ethyl-cellulose-sensors-for-acetone-vapor-fluorescence-detection
#15
Alexander A Ksenofontov, Galina B Guseva, Svetlana A Stupikova, Elena V Antina
In this paper, we report on the results of spectrofluorimetric study of new fluorescent sensor based on [Zn2 L2 ] doped in ethyl cellulose. The sensor optical signal is based on the rapid fluorescence quenching in the presence of acetone vapor. The acetone vapor detection limit in a gas mixture by means of sensor based on [Zn2 L2 ] doped in ethyl cellulose is 1.68 ppb. Being highly sensitive to the acetone acetone presence, instant in response and easy to use, the sensor can find an application for the noninvasive diagnostics of diabetes as well as for the monitoring of the content of acetone acetone in the air at industrial and laboratory facilities...
April 23, 2018: Journal of Fluorescence
https://www.readbyqxmd.com/read/29680929/evaluation-of-factors-affecting-time-to-achieve-dry-weight-among-hemodialysis-patients-using-bioimpedance-spectroscopy
#16
Amjad Khan, Amer Hayat Khan, Azreen Syazril Adnan, Syed Azhar Syed Sulaiman, Nafees Ahmad, Siew Hua Gan
BACKGROUND: Achieving and maintaining dry weight appears to be an effective strategy for controlling and maintaining normotension among hypertensive patients on hemodialysis (HD). OBJECTIVE: The present study aimed to determine the time at which the majority of patients achieve postdialysis dry weight using bioimpedance spectroscopy (BIS). METHODS: A total of 220 HD patients were prospectively assessed for fluid overload using the Fresenius body composition monitor (BCM)...
April 22, 2018: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29678142/abnormally-low-bispectral-index-and-severe-hypoglycemia-during-maintenance-of-and-recovery-from-general-anesthesia-in-diabetic-retinopathy-surgery-two-case-reports
#17
Chunhua Xi, Chuxiong Pan, Tianzuo Li
BACKGROUND: Hypoglycemia is one of the most fatal complications during the perioperative period. General anesthesia or sedation can mask a hypoglycemia-altered mental status. Acute hypoglycemia might result in permanent brain injury. There is no way to detect hypoglycemia during general anesthesia, except for intermittent blood glucose monitoring. CASE PRESENTATION: Hypoglycemia is associated with changes in electroencephalogram readings. Here, we report two cases of patients with an abnormally low Bispectral Index (BIS) associated with diabetic retinopathy surgery, one in the recovery stage of general anesthesia and the other in the maintenance of general anesthesia...
April 20, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29673722/density-spectral-array-of-bis-vista%C3%A2-monitoring-system-in-a-functional-hemispherectomy
#18
C Luis, E Vilà, L Moltó, A Pardo, J L Fernández Candila, S Pacreu
We present the case of an adult patient with drug-resistant epilepsy caused by extensive inflammation in the right cerebral hemisphere. She was scheduled to undergo right functional hemispherectomy, which is common in pediatric surgery, but about which few studies have been published with respect to adult patients. During the intraoperative period, the density spectral array of the bilateral bispectral index (BIS) VISTATM monitoring system was used. We observed a power increase in low frequency (0.1-4Hz) and alpha bands (8-12Hz) in the right hemisphere, where the epileptogenic focus was...
April 16, 2018: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/29668462/electrodermal-activity-monitoring-during-endotracheal-suction-in-sedated-adult-intensive-care-unit-patients
#19
Theodoros Aslanidis, Vasilios Grosomanidis, Konstantinos Karakoulas, Athanasios Chatzisotiriou
BACKGROUND: Endotracheal suctioning of respiratory secretions is one of the most common causes of pain and discomfort in Intensive Care Unit environment. The electrical properties of the skin, also known as electrodermal activity (EDA), are considered as an indirect measure of autonomous nervous system. AIM: This study explores EDA changes during endotracheal suction in sedated adult critical care patients; and compares these changes to other monitoring parameters...
March 1, 2018: Folia Medica
https://www.readbyqxmd.com/read/29645363/solvent-mediated-functionalization-of-benzofuroxan-on-electron-rich-ruthenium-complex-platform
#20
Goutam Kumar Lahiri
The present article reveals an unprecedented reactivity profile of biochemically relevant R-benzofuroxan (R=H, Me, Cl) with high structural diversity and molecular complexity on selective {Ru(acac)2} (acac=acetylacetonate) platform in conjugation with EtOH solvent mediation. This led to one-pot development of monomeric [RuIII(acac)2(L1R)] (1a-1c) (L1R = 2-nitrosoanilido derivatives) and dimeric [{RuII(acac)2}2(L2R)] (2a-2b) ((L2R=(1E,2E)-N1,N2-bis(2-nitrosophenyl)ethane-1,2-diimine derivatives) complexes with the change in metal redox...
April 12, 2018: Chemistry, An Asian Journal
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