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Nitroglycerin

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https://www.readbyqxmd.com/read/29148139/nitroglycerin-an-unusual-solution-to-intraoperative-hypothermia-in-a-4-year-old-burn-patient
#1
Eduardo J Goenaga Díaz, Jeffrey E Carter, T Wesley Templeton
We describe the case of a 4-year-old child undergoing extensive burn surgery with refractory intraoperative hypothermia. A low-dose nitroglycerin infusion was initiated to reverse vasoconstriction and improve heat absorption, after which the child's temperature steadily improved. In hypothermic burn patients, topical vasoconstrictors may hinder surface warming efforts. A vasodilator infusion may aid in warming the pediatric patient undergoing extensive excision and grafting.
November 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29147842/tetrandrine-alleviates-nociception-in-a-rat-model-of-migraine-via-suppressing-s100b-and-p-erk-activation-in-satellite-glial-cells-of-the-trigeminal-ganglia
#2
Guangcheng Qin, Bei Gui, Jingmei Xie, Lixue Chen, Lianlian Chen, Zhiwei Cui, Jiying Zhou, Ge Tan
Sensitization and activation of the trigeminal ganglia have been implicated in the pathology of migraine. Satellite glial cells (SGCs), a specialized type of glial cells that ensheathe trigeminal neurons, may be critical for peripheral nociceptive sensitization. Tetrandrine (TET), an alkaloid extracted from a traditional Chinese herb, exerts an inhibitory effect on glial activation in vitro and has been used in various neurologic diseases. The current study investigated the effect of TET on nitroglycerin (NTG)-induced trigeminal sensitization and examined potential signaling pathways related to SGC activation in the model of migraine...
November 16, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29147480/a-rare-case-of-late-onset-saphenous-vein-graft-spasm
#3
Nirmal Guragai, Upamanyu Rampal, Rahul Vasudev, Hiten Patel, Meherwan B Joshi, Fayez Shamoon
Spasm following coronary artery bypass graft surgery has been well established in arterial grafts, especially in grafts utilizing the internal mammary. Venous graft spasms are uncommon and are only observed in vein grafts during or soon after the coronary artery bypass surgery. It is exceedingly rare to see spasm of venous graft beyond one year of surgery. We report a 72-year-old female who had coronary artery bypass graft three years ago and presented with new onset chest pain for one month. The coronary angiogram revealed severe spasm of the proximal aspect of a patent saphenous venous graft which was relieved by intracoronary nitroglycerine...
2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29139092/effects-of-allopurinol-on-endothelial-function-a-systematic-review-and-meta-analysis-of-randomized-placebo-controlled-trials
#4
REVIEW
Arrigo F G Cicero, Matteo Pirro, Gerald F Watts, Dimitri P Mikhailidis, Maciej Banach, Amirhossein Sahebkar
INTRODUCTION: Uric acid (UA), the final product of purine catabolism, may be associated with an increased risk of cardiovascular disease. AIM: The aim of this meta-analysis of randomized placebo-controlled trials was to evaluate whether lowering serum UA (SUA) levels with allopurinol is associated with improved flow-mediated dilation (FMD), a validated marker of early vascular damage. METHODS: A literature search was carried out from inception until 20 June 2017...
November 14, 2017: Drugs
https://www.readbyqxmd.com/read/29121466/reaching-a-vapor-sensitivity-of-0-01-parts-per-quadrillion-in-the-screening-of-large-volume-freight
#5
Daoiz Zamora, Mario Amo-Gonzalez, Marta Lanza, Gonzalo Fernandez De La Mora, Juan Fernandez de la Mora
The feasibility of detecting explosives in the atmosphere at concentrations as low as 0.01 ppq hinges on the poorly known question of what interfering species exist at these or higher concentrations. To clarify the issue, hundreds of samples of ambient air, either clean or loaded with explosives (from lightly contaminated environments) have been collected in fiberglass/stainless steel filters coated with Tenax-GR, thermally desorbed at variable temperature, and ionized with Cl- via secondary electrospray (SESI)...
November 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29101903/contamination-with-explosives-in-analytical-laboratory-procedure
#6
Wojciech Pawłowski, Łukasz Matyjasek, Katarzyna Cieślak, Monika Karpińska
The philosophy underlying the procedure with the trace from the moment of the securing of the evidence up to its ultimate inspection is of significance for the result achieved. Hands of the people who conduct investigative action or of the experts involved in examinations contaminated with explosives may adversely affect results of the analyses. The contamination effect is one of the most dangerous consequences of non-observance of the strict rules in handling the traces secured on the crime scene. The aim of this research work was to examine whether at all, and if so, with what an ease and at which stage of the analytical procedure there occurs a likely contamination of the evidence material with explosives such as TNT, RDX, PETN, NG...
October 18, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29096811/the-role-of-nitroglycerin-and-other-nitrogen-oxides-in-cardiovascular-therapeutics
#7
REVIEW
Sanjay Divakaran, Joseph Loscalzo
The use of nitroglycerin in the treatment of angina pectoris began not long after its original synthesis in 1847. Since then, the discovery of nitric oxide as a biological effector and better understanding of its roles in vasodilation, cell permeability, platelet function, inflammation, and other vascular processes have advanced our knowledge of the hemodynamic (mostly mediated through vasodilation of capacitance and conductance arteries) and nonhemodynamic effects of organic nitrate therapy, via both nitric oxide-dependent and -independent mechanisms...
November 7, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29093410/coronary-artery-spasm-during-cryoballoon-ablation-in-a-patient-with-atrial-fibrillation
#8
Kazuhiro Yajima, Yuichiro Yamase, Hideo Oishi, Noriyuki Ikehara, Yasushi Asai
The patient was a 63-year-old man with drug-resistant atrial fibrillation who developed coronary spasm during cryoballoon ablation (CBA). CBA was started from the left inferior pulmonary vein. ST elevations in II, III, and aVf, with reciprocal ST depressions in V2-5, occurred in association with chest pain just after balloon rewarming and deflation, and the patient's blood pressure fell to 50 mmHg. Coronary angiography revealed 90% diffuse stenosis from the orifice of segment 1 to segment 4 in the right coronary artery...
November 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29091804/sorption-and-desorption-kinetics-of-nitroglycerin-and-2-4-dinitrotoluene-in-nitrocellulose-and-implications-for-residue-bound-energetic-materials
#9
Dave T F Kuo, Michael Simini, Herbert E Allen
Energetic materials (EMs) bound to propellant residues can contribute to environmental risk and public health concerns. This work investigated how nitrocellulose, a common binding material in propellants, may control the release dynamics of nitroglycerin (NG) and 2,4-dinitrotoluene (2,4-DNT) from propellant residues. Batch adsorption/desorption experiments on nitrocellulose and re-interpretation on results from past leaching studies involving propellant-bound EMs were conducted. Mechanistic modeling of adsorption/desorption kinetics based on intra-particle diffusion (IPD) predicted aqueous intrinsic diffusivities (Diw) to within a factor of 2 of expected values...
October 29, 2017: Water Research
https://www.readbyqxmd.com/read/29084192/transient-left-ventricular-dysfunction-due-to-coronary-spasm-after-spinal-anesthesia-with-bupivacaine-a-case-report
#10
Waldemar Elikowski, Małgorzata Małek-Elikowska, Marek Słomczyński, Karolina Horbacka, Jarosław Bartkowski, Bartosz Kalawski
Bupivacaine is a long-acting local anesthetic (LA) used for cutaneous infiltration, peripheral nerve blocks, epidural and spinal anesthesia. However, its application may result in cardiovascular complications such as: hypotension, bradycardia, cardiac arrest and toxic myocardial injury. The authors describe a 53-year-old male with a history of cigarette smoking, admitted for an elective inguinal hernia surgery. Before surgery, the patient received subarachnoid injection of bupivacaine (20 mg). After the operation, he developed transient hypotension...
October 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29079674/myocardial-bridge-bridging-the-differential-diagnosis
#11
Mayur Patel, Brenen Swofford, Edward Distler
A 50-year-old man with a history of vasospastic angina diagnosed 3 months prior presented with recurrent episodes of substernal chest pain. His chest pain was characterised as 'squeezing', lasting 10 min and typically occurred on awakening. Medications included isosorbide, nitroglycerin and ranolazine; however, due to lack of insurance he was unable to obtain these medications. On admission, patient was given a full-dose aspirin and nitroglycerin, which acutely worsened his chest pain. ECG did not reveal ischaemic changes and initial troponin was negative...
October 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29074411/a-protective-role-of-g%C3%AE-q-rgs2-loop-activator-on-streptozotocin-induced-diabetic-complications-in-rats-an-independent-on-elevated-serum-glucose-level-modulation
#12
Jayesh V Beladiya, Kiranj Kishor Chaudagar, Anita A Mehta
An overactivation of Gαq dependent signaling pathway is crucial for development of metabolic and vascular abnormalities in diabetes. Therefore, our objective was to study effects of Gαq-RGS2 loop activator (1-(5-chloro-2-hydroxyphenyl)-3-(4-(trifluoromethyl)phenyl)-1H-1,2,4-triazol-5(4H)-one) on STZ induced diabetic complications in rats. Animals were divided into four groups; normal rats, diabetic rats (Streptozotocin, STZ, 60mg/kg, i.p.), Gαq-RGS2 loop activator (1mg/kg/d, i.p., 15 d, at 6 wk after citrate buffer or STZ administration, respectively) treated normal rats and diabetic rats...
October 23, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29073514/propellant-s-differentiation-using-ftir-photoacoustic-detection-for-forensic-studies-of-improvised-explosive-devices
#13
Ángela Álvarez, Jorge Yáñez, David Contreras, Renato Saavedra, Pedro Sáez, Dulasiri Amarasiriwardena
The use of propellant for making improvised explosive devices (IED) is an incipient criminal practice. Propellant can be used as initiator in explosive mixtures along with other components such as coal, ammonium nitrate, sulfur, etc. The identification of the propellant's brand used in homemade explosives can provide additional forensic information of this evidence. In this work, four of the most common propellant brands were characterized by Fourier-transform infrared photoacoustic spectroscopy (FTIR-PAS) which is a non-destructive micro-analytical technique...
October 6, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29069878/the-effect-of-low-dose-nitroglycerin-ointment-on-skin-flap-necrosis-in-breast-reconstruction-after-skin-sparing-or-nipple-sparing-mastectomy
#14
Min Ho Yun, Eul Sik Yoon, Byung-Il Lee, Seung-Ha Park
Background: Skin flap necrosis is a common complication after mastectomy and breast reconstruction. It has been proven that nitroglycerin ointment, as a topical vasodilator, can decrease the rate of skin flap necrosis after mastectomy and breast reconstruction. However, nitroglycerin can cause several side effects, including headache, dizziness, and hypotension. The purpose of this study was to evaluate whether the application of a low dose of nitroglycerin ointment reduced the rate of skin flap necrosis in breast reconstruction after skin-sparing or nipple-sparing mastectomy...
October 26, 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/29064792/anti-inflammatory-and-endothelium-protective-effect-of-long-term-pioglitazone-intake-in-patients-suffering-from-bronchial-asthma-concurrent-with-ischemic-heart-disease
#15
Oksana V Byelan, Tetiana V Mamontova, Liudmyla E Vesnina, Oksana A Borzykh, Igor P Kaidashev
INTRODUCTION: Treatment of co-morbidities, including bronchial asthma (BA) and coronary heart disease (CHD), is a relevant issue of modern therapy. The aim of the research is to study the impact of long-term intake of pioglitazone on the development of inflammation and ED in patients with BA concurrent with CHD. MATERIAL AND METHODS: The clinical study involved 50 people aged 40-75 who suffered from asthma concurrent with CHD. On the first day of the study, blood samples were collected and clinical examinations were performed, after which patients were randomized and divided into the control group who continued to receive only the standard therapy, and the study group, who received pioglitazone (Pioglar, Ranbaxy, India) 15 mg once a day along with comprehensive therapy...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29064536/flow-mediated-dilatation-to-relieve-puncture-induced-radial-artery-spasm-a-pilot-study
#16
Lianghong Ying, Ke Xu, Xiaoxuan Gong, Xiaoyan Liu, Yuansheng Fan, Haiping Zhao, Fei Wang, Mohammad Reeaze Khurwolah, Chunjian Li
BACKGROUND: Puncture-induced radial artery spasm (RAS) may extend the duration of coronary angiography (CAG) or cause transradial access failure. Flow-mediated dilatation (FMD), a widely-used noninvasive approach for assessing endothelial function, was reported to remove the entrapped radial sheath after percutaneous coronary intervention. Herein, the efficacy and safety of FMD in treating puncture-induced RAS before transradial CAG was investigated. METHODS: Ninety patients with puncture-induced RAS were randomized in a 1:1:1 ratio into three groups: FMD group was immediately treated with blockage of brachial artery blood for 5 min using a sphygmomanometric cuff and then rapid relief; NTG group was administered with 0...
October 24, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/29060958/a-case-of-hypertensive-crisis-without-a-surge-in-adrenal-hormones-after-radiofrequency-ablation-as-a-treatment-for-primary-hepatocellular-carcinoma
#17
Kyung Jin Lee, Soo Hyung Ryu
Radiofrequency ablation (RFA) is a minimally invasive procedure that has been considered as a relatively safe treatment for patients with small hepatocellular carcinoma (HCC). However, RFA has been shown to be associated with complications including mechanical and thermal damage. A 74-year-old man with hepatitis C virus-associated HCC was admitted to our hospital. Abdominal computed tomography revealed two lobulated-HCC in segments 4 and 5. He had no medical history of hypertension and cardiac disease. During RFA, blood pressure was elevated to 200/140 mmHg...
October 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29055803/optimal-blood-pressure-decreases-acute-kidney-injury-after-gastrointestinal-surgery-in-elderly-hypertensive-patients-a-randomized-study-optimal-blood-pressure-reduces-acute-kidney-injury
#18
Xiujuan Wu, Zongming Jiang, Jing Ying, Yangyang Han, Zhonghua Chen
STUDY OBJECTIVE: To determine the appropriate mean arterial pressure (MAP) control level for elderly patients with hypertension during the perioperative period. DESIGN: A prospective, randomized study. SETTING: Three teaching hospitals in China. PATIENTS: Six hundred seventy-eight elderly patients with chronic hypertension undergoing major gastrointestinal surgery. INTERVENTIONS: Patients were randomly allocated to three groups and the target MAP level was strictly controlled to one of three levels: level I (65-79mmHg), level II (80-95mmHg), or level III (96-110mmHg)...
October 18, 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29039159/cortisol-and-migraine-a-systematic-literature-review
#19
Giuseppe Lippi, Camilla Mattiuzzi
Migraine is a highly prevalent and disabling disorder. Because stress appears to be a prominent trigger of this condition and cortisol is a well-established stress hormone, we performed a search on Medline, Scopus, and Web of Science to identify clinical studies that assessed cortisol levels in migraineurs. Four cross-section studies, one observational study, and three both cross-sectional and observational studies were finally included in our analysis. The heterogeneity was modest for the sample size (49.8%) but was remarkably high for a sample matrix (66...
July 2017: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/29036615/monitoring-of-cerebral-oximetry-during-head-up-tilt-test-in-adults-with-history-of-syncope-and-orthostatic-intolerance
#20
E Bachus, H Holm, V Hamrefors, O Melander, R Sutton, M Magnusson, A Fedorowski
Aims: We applied near-infrared-spectroscopy (NIRS) to measure absolute frontal cerebral tissue oxygen saturation (SctO2) during head-up tilt test (HUT) in patients investigated for unexplained syncope. Methods and results: Synchronized non-invasive beat-to-beat haemodynamic monitoring, ECG, SctO2 (NIRS; normal range: 60-80%), and peripheral oxygen saturation (left hand, SpO2) were applied during HUT in a random sample of patients with unexplained syncope. Tracings of 54 patients (mean-age: 55 ± 19 years, 39% male) with negative HUT, vasovagal syncope (VVS), or orthostatic hypotension (OH) were analysed...
September 28, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
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