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Cox S, Gwynne S, Staffurth J, Crosby T. OC-0416 Assessing the quality of oesophageal cancer target volume delineation in the SCOPE1 trial. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30836-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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52
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Hawkins SJ, Cox S, Yaw TJ, Sladky K. Pharmacokinetics of subcutaneously administered hydromorphone in bearded dragons (Pogona vitticeps) and red-eared slider turtles (Trachemys scripta elegans). Vet Anaesth Analg 2019; 46:352-359. [PMID: 30827804 DOI: 10.1016/j.vaa.2018.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 12/29/2018] [Accepted: 12/30/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To determine pharmacokinetic dosing strategy in bearded dragons (Pogona vitticeps) and red-eared sliders (Trachemys scripta elegans) based on two subcutaneously (SC) administered doses of hydromorphone (0.5 and 1.0 mg kg-1). STUDY DESIGN Randomized crossover study. ANIMALS Six healthy adult bearded dragons, seven healthy adult red-eared slider turtles. METHODS Hydromorphone (0.5 and 1.0 mg kg-1; 2 mg mL-1) was administered SC dorsolateral to the scapulae in the bearded dragons and between the head and thoracic limb of the red-eared slider turtles. Blood was collected for hydromorphone plasma concentration analysis from the ventral tail vein in bearded dragons and subcarapacial sinus in turtles before (time 0) hydromorphone administration and at 0.5, 1, 6, 12 and 24 hours. RESULTS The half-life of hydromorphone administered at 0.5 and 1.0 mg kg-1 was 2.54 and 3.05 hours in bearded dragons and 2.67 and 2.01 hours in red-eared sliders, respectively. The maximum plasma concentrations for 0.5 and 1.0 mg kg-1 were 142 and 369 ng mL-1 in bearded dragons and 1610 and 5142 ng mL-1 in red-eared sliders, respectively. Peak plasma concentrations were detected at 30 minutes for both species. Hydromorphone administered at both dosages provided plasma concentrations of 13-14 ng mL-1 for at least 24 hours in bearded dragons and of 5-6 ng mL-1 for at least 12 hours in red-eared sliders. Clinical sedation was observed for up to 1 hour posthydromorphone (1.0 mg kg-1) administration for five of six bearded dragons characterized by low body carriage and decreased response to stimuli. No evidence of clinical sedation was observed in red-eared sliders at either dose. CONCLUSIONS AND CLINICAL RELEVANCE Recommended dosing strategy for hydromorphone is 0.5 mg kg-1 administered SC every 24 hours in bearded dragons and every 12-24 hours in red-eared sliders.
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Bailey A, Fryer M, Hall K, Hogg E, Levy E, Cox S. Activated Clotting Time Does Not Predict Radial Access Bleeding Complications. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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54
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O'sullivan P, Cole C, Mundy J, Lo W, Garrahy P, Cox S, Sudhir W, Chong A, Cox S, Korver K, Camuglia A. In-practice Hybrid Heart Team Co-proceduralist TAVR Model is Associated with Low Procedural Complication Rates and Good Patient Outcomes: The Princess Alexandra Hospital Hybrid Heart Team Approach. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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55
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Bennett K, Seddighi R, Moorhead K, Messenger K, Cox S, Sun X, Pasloske K, Doherty T. Effect of fentanyl on the induction dose and minimum infusion rate of alfaxalone preventing movement in female dogs. Vet Anaesth Analg 2018. [DOI: 10.1016/j.vaa.2018.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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56
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Cox S, Bergman J, Hawkins S, Sladky K. Development of a method for the determination of hydromorphone in plasma by LC-MS. Biomed Chromatogr 2018; 32:e4357. [DOI: 10.1002/bmc.4357] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/20/2018] [Accepted: 07/24/2018] [Indexed: 11/08/2022]
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57
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Ahmad F, Cox S, Chan ST, Abdul Rahman E, Zainal Abidin I, Sadiq MA. P3525Our 20 years experience with complicated infective endocarditis in intensive care unit: early vs late surgery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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58
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Ahmad F, Cox S, Chan ST, Abdul Rahman E, Zainal Abidin I, Sadiq MA. P3543Role of echocardiography in reducing mortality and morbidity in infective endocarditis; a 20 years retrospective study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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59
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Tapley P, Cox S, Williams R. Are anaesthetists resistant to change? Br J Anaesth 2018; 121:105-106. [PMID: 29935557 DOI: 10.1016/j.bja.2018.03.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 03/30/2018] [Accepted: 04/01/2018] [Indexed: 11/17/2022] Open
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Morrison J, Greenacre CB, George R, Cox S, Martín-Jiménez T. Pharmacokinetics of a Single Dose of Oral and Intramuscular Meloxicam in African Penguins (Spheniscus demersus). J Avian Med Surg 2018; 32:102-108. [DOI: 10.1647/2017-281] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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61
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Cox S, Jones G, Radhakrishna G, Mukherjee S, Hawkins M, Crosby T, Gwynne S. PO-1080: 4DCT oesophageal tumour delineation in SCOPE2 – how is radiotherapy quality assurance beneficial? Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31390-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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62
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Chong A, Mallouhi M, Camuglia A, Cole C, Cox S, Korver K, Wahi S. Acute Afterload Reduction Post–Transcatheter Aortic Valve Replacement: Early Mechanistic Insights into Improved Left Ventricular Performance. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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63
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Bailey A, Cox S, O’Brien L. A Regional Primary Reperfusion Pathway: Increased Use of Thrombolysis is Both Safe and Effective. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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64
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Nondela B, Arnold M, Cox S. Novel technique for endoscopic retrieval of a ring-shaped gastric foreign body. S AFR J SURG 2018. [DOI: 10.17159/2078-5151/2018/v56n3a2390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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65
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Nam M, Meneses A, Anstey C, Askew C, Hickman I, Bailey T, Quah J, Senior R, Cox S, Poulter R, Butterly S, Fryer M, Russell A, Stanton T, Greaves K. An Experimental Series Investigating the Effects of Euglycaemic Hyperinsulinaemia on Myocardial Blood Flow Reserve in Healthy Individuals and Perfusion Defect Size in Patients Presenting With Acute Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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66
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Smith C, Seddighi R, Cox S, Sun X, Knych H, Doherty T. Effect of dexmedetomidine on the minimum infusion rate of propofol preventing movement in dogs. Vet Anaesth Analg 2017. [DOI: 10.1016/j.vaa.2017.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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67
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Yeo T, Papadakis M, Sharma S, Cox S, Sheppard M, Behr E. P2527Young sudden cardiac death in England and Wales: a decade of change. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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68
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Hilling-Smith R, Chong A, Cox S. Mitral paravalvular leak closure by antegrade percutaneous approach using amplatzer PFO closure device. Catheter Cardiovasc Interv 2017; 90:E62-E67. [PMID: 27084789 DOI: 10.1002/ccd.26417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 10/23/2015] [Accepted: 12/26/2015] [Indexed: 11/07/2022]
Abstract
Percutaneous closure of paravalvular leaks is becoming a more widely practiced technique. We describe the technique we used to deploy an Amplatzer PFO closure device to treat a prosthetic mitral paravalvular leak. The procedure was performed under real time 3D trans-oesophageal echo and fluoroscopic guidance requiring a trans-septal puncture and utilising an 035″ Safari wire which was developed for TAVR implantation. An excellent result was achieved acutely and at 4 month follow-up. © 2016 Wiley Periodicals, Inc.
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Gardhouse S, Guzman DSM, Cox S, Kass PH, Drazenovich TL, Byrne BA, Hawkins MG. Pharmacokinetics and safety of ceftiofur crystalline free acid in New Zealand White rabbits (Oryctolagus cuniculus). Am J Vet Res 2017. [DOI: 10.2460/ajvr.78.7.796] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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70
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Cox S, Bailey J, White M, Gordon K, Souza M. Determination of Meloxicam in Egg Whites and Yolks Using Reverse Phase Chromatography. J Chromatogr Sci 2017; 55:610-616. [PMID: 28334796 DOI: 10.1093/chromsci/bmx014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 02/15/2017] [Indexed: 11/14/2022]
Abstract
A new method of analysis has been developed and validated for the determination of meloxicam in egg whites and yolks. Following a liquid extraction for the whites and a solid phase extraction for the yolks, samples were separated on an XBridge C18 column and quantified using ultraviolet detection at 360 nm. The mobile phase was a mixture of water with glacial acetic acid and acetonitrile, with a flow rate of 1 mL/min. The procedure produced a linear graph over the concentration range 5-1500 ng/mL with a lower limit of quantification of 5 ng/mL. Intra- and inter-assay variability was 10% or less for both the whites and yolks. The average recovery for whites was 96% and the average recovery in yolks was 97%.
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Cox S, Bailey J, Okafor C, Seddighi R, Doherty T. The influence of storage time and temperature on propofol concentrations in canine blood and plasma. PeerJ 2017; 5:e3476. [PMID: 28674652 PMCID: PMC5494168 DOI: 10.7717/peerj.3476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/30/2017] [Indexed: 11/29/2022] Open
Abstract
Propofol is an intravenous anesthetic commonly used due to its favorable pharmacokinetic and pharmacodynamic profile. There are discrepancies in the literature about the most appropriate sample for determining propofol concentrations. Although plasma has been used for determining propofol concentrations, whole blood has been the preferred sample. There is also a lack of consistency in the literature on the effect of storage time and temperature on propofol concentrations and this may lead to errors in the design of pharmacokinetic/pharmacodynamics studies. The purpose of this study was to determine the difference in propofol concentrations in whole blood versus plasma and to evaluate the influence of storage time (56 days) and temperature (4 °C, −20 °C, −80 °C) on the stability of propofol concentrations in blood and plasma samples. Results from the study indicate that whole blood and plasma samples containing propofol stored at −80 °C have concentrations as high as or higher than those stored at 4 °C or −20 °C for 56 days; thus, −80 °C is an appropriate temperature for propofol sample storage. Plasma propofol concentrations were consistently higher than whole blood for all three storage temperatures. Consequently, plasma is the most appropriate sample for propofol analysis due to its consistent determinations.
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Kane LP, Allender MC, Archer G, Leister K, Rzadkowska M, Boers K, Souza M, Cox S. Pharmacokinetics of nebulized and subcutaneously implanted terbinafine in cottonmouths (Agkistrodon piscivorus
). J Vet Pharmacol Ther 2017; 40:575-579. [DOI: 10.1111/jvp.12406] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 02/23/2017] [Indexed: 11/30/2022]
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Maharjan P, Cox S, Gadde U, Clark FD, Bramwell K, Watkins SE. Evaluation of chlorine dioxide based product as a hatchery sanitizer. Poult Sci 2017; 96:560-565. [PMID: 27920190 DOI: 10.3382/ps/pew418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 10/23/2016] [Indexed: 11/20/2022] Open
Abstract
Formaldehyde is commonly used to overcome contaminants introduced by hatching eggs or water supply in the hatcher cabinets. However, health risks associated with its use make economical alternatives important. This project evaluated a chlorine dioxide based product (CDBP) (0.3% concentrate) as a hatchery sanitizer in decontaminating microbial populations on the shell surface of hatching eggs (>18 d old), as well as its impact on hatchability and chick performance. Hatchers (0.20 m2) designed to hold approximately 50 eggs and equipped with circulation fans, heaters, and thermostats were used for the evaluation. For each of the 2 trials conducted, 450 hatching eggs were obtained and incubated in a common setter. Eggs used in trial 1 were floor eggs whereas in trial 2 nest eggs were used. On d 18 of incubation, eggs were removed from the setter, and viable eggs were randomly allocated to 9 hatchers. Pre-treatment egg rinse samples (10 eggs per hatcher) were collected for initial microbial analysis. Three hatchers were treated with CDBP and 3 hatchers with a formaldehyde based product (FBP). Three untreated hatchers served as control (C). Prior to hatch, 10 eggs/incubator, not previously rinsed, were used for post treatment microbial counts. The hatched chicks were reared until d 21 in floor pens with a common starter diet. For the CDBP treated eggs, hatchability and chick performance (weight gains, mortality, and FCR on d 7 and d 21) were similar to the other treatments. The application rate of CDBP evaluated in this study was not an effective antimicrobial alternative to formaldehyde for sanitizing hatching eggs in hatcher cabinets prior to hatch.
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Davis C, Seddighi R, Cox S, Sun X, Egger C, Doherty T. Effect of fentanyl on the minimum infusion rate of propofol preventing movement in dogs. Vet Anaesth Analg 2017. [DOI: 10.1016/j.vaa.2016.12.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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75
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Newsom-Davis T, Simmons J, Bower M, Cox S, Gill A, Hennah L, Robinson A, Richmond K, Sharkey R. Acute diagnostic oncology clinic: tackling emergency presentations of cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw387.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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