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https://www.readbyqxmd.com/read/29345612/fit-characteristics-of-n95-filtering-facepiece-respirators-and-the-accuracy-of-the-user-seal-check-among-koreans
#1
Yu Jung Huh, Hye Min Jeong, Juhye Lim, Ha Yan Park, Min Young Kim, Hong Sang Oh, Kyungmin Huh
Adequate facepiece fit of N95 filtering facepiece respirators (FFRs) is crucial for optimal protection against airborne pathogens. The quantitative fit test (QNFT) pass rates of the 4 N95 FFR models commonly used in Korea were below 50%. Male sex was identified as a single independent predictive factor for QNFT pass. Infect Control Hosp Epidemiol 2018;39:104-107.
January 2018: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29343675/diagnostic-accuracy-of-quantitative-flow-ratio-for-assessing-myocardial-ischemia-in-prior-myocardial-infarction
#2
Hiroki Emori, Takashi Kubo, Takeyoshi Kameyama, Yasushi Ino, Yoshiki Matsuo, Hironori Kitabata, Kosei Terada, Yosuke Katayama, Hiroshi Aoki, Akira Taruya, Kunihiro Shimamura, Shingo Ota, Atsushi Tanaka, Takeshi Hozumi, Takashi Akasaka
BACKGROUND: A novel index of the functional severity of coronary stenosis, quantitative flow ratio (QFR), may not consider the amount of viable myocardium in prior myocardial infarction (MI) because QFR is calculated from 3D quantitative coronary angiography.Methods and Results:We analyzed QFR (fixed-flow QFR [fQFR] and contrast-flow QFR [cQFR]) and fractional flow reserve (FFR) in prior-MI-related coronary arteries (n=75) and non-prior-MI-related coronary arteries (n=75). Both fQFR and cQFR directly correlated with FFR in the prior-MI-related coronary arteries (fQFR: r=0...
January 16, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29336308/clinical-significance-of-concordance-or-discordance-between-fractional-flow-reserve-and-coronary-flow-reserve-for-coronary-physiological-indices-microvascular-resistance-and-prognosis-after-elective-percutaneous-coronary-intervention
#3
Eisuke Usui, Tadashi Murai, Yoshihisa Kanaji, Masahiro Hoshino, Masao Yamaguchi, Masahiro Hada, Rikuta Hamaya, Yoshinori Kanno, Tetsumin Lee, Taishi Yonetsu, Tsunekazu Kakuta
AIMS: We aimed to investigate the impact of concordance or discordance of fractional flow reserve (FFR) and coronary flow reserve (CFR) on coronary flow profiles and microvascular resistance after percutaneous coronary intervention (PCI), and the prognostic impact of the periprocedural physiological indices. METHODS AND RESULTS: Totally, 249 de novo physiologically significant coronary lesions from 231 patients who underwent FFR, CFR, and index of microcirculatory resistance (IMR) examinations before and after PCI were included...
January 16, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29326150/diagnostic-performance-of-the-instantaneous-wave-free-ratio-comparison-with-fractional-flow-reserve
#4
Salvatore De Rosa, Alberto Polimeni, Ricardo Petraco, Justin E Davies, Ciro Indolfi
BACKGROUND: Aim of the present study was to perform a meta-analysis of all available studies comparing the instantaneous wave-free ratio (iFR) with fractional flow reserve (FFR). METHODS AND RESULTS: Published trials comparing the iFR with FFR were searched for in PubMed, Google Scholar, and Scopus electronic databases. A total of 23 studies were available for the analysis, including 6381 stenoses. First, a meta-analysis of all studies was performed exploring the correlation between FFR and iFR...
January 2018: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29324384/flame-retardants-in-uk-furniture-increase-smoke-toxicity-more-than-they-reduce-fire-growth-rate
#5
Sean T McKenna, Robert Birtles, Kathryn Dickens, Richard G Walker, Michael J Spearpoint, Anna A Stec, T Richard Hull
This paper uses fire statistics to show the importance of fire toxicity on fire deaths and injuries, and the importance of upholstered furniture and bedding on fatalities from unwanted fires. The aim was to compare the fire hazards (fire growth and smoke toxicity) using different upholstery materials. Four compositions of sofa-bed were compared: three meeting UK Furniture Flammability Regulations (FFR), and one using materials without flame retardants intended for the mainland European market. Two of the UK sofa-beds relied on chemical flame retardants to meet the FFR, the third used natural materials and a technical weave in order to pass the test...
December 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/29317987/delineation-of-epicardial-stenosis-in-patients-with-microvascular-disease-using-pressure-drop-coefficient-a-pilot-outcome-study
#6
Ullhas Udaya Hebbar, Mohamed A Effat, Srikara V Peelukhana, Imran Arif, Rupak K Banerjee
AIM: To investigate the patient-outcomes of newly developed pressure drop coefficient (CDP) in diagnosing epicardial stenosis (ES) in the presence of concomitant microvascular disease (MVD). METHODS: Patients from our clinical trial were divided into two subgroups with: (1) cut-off of coronary flow reserve (CFR) < 2.0; and (2) diabetes. First, correlations were performed for both subgroups between CDP and hyperemic microvascular resistance (HMR), a diagnostic parameter for assessing the severity of MVD...
December 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/29311033/lesion-specific-and-vessel-related-determinants-of-fractional-flow-reserve-beyond-coronary-artery-stenosis
#7
Amir Ahmadi, Jonathon Leipsic, Kristian A Øvrehus, Sara Gaur, Emilia Bagiella, Brian Ko, Damini Dey, Gina LaRocca, Jesper M Jensen, Hans Erik Bøtker, Stephan Achenbach, Bernard De Bruyne, Bjarne L Nørgaard, Jagat Narula
OBJECTIVES: The aims of the present study were: 1) to investigate the contribution of the extent of luminal stenosis and other lesion composition-related factors in predicting invasive fractional flow reserve (FFR); and 2) to explore the distribution of various combinations of morphological characteristics and the severity of stenosis among lesions demonstrating normal and abnormal FFR. BACKGROUND: In patients with stable ischemic heart disease, FFR-guided revascularization, as compared with medical therapy alone, is reported to improve outcomes...
January 2, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29306985/children-with-autism-spectrum-disorder-have-unstable-neural-responses-to-sound
#8
Sebastian Otto-Meyer, Jennifer Krizman, Travis White-Schwoch, Nina Kraus
Autism spectrum disorder (ASD) is diverse, manifesting in a wide array of phenotypes. However, a consistent theme is reduced communicative and social abilities. Auditory processing deficits have been shown in individuals with ASD-these deficits may play a role in the communication difficulties ASD individuals experience. Specifically, children with ASD have delayed neural timing and poorer tracking of a changing pitch relative to their typically developing peers. Given that accurate processing of sound requires highly coordinated and consistent neural activity, we hypothesized that these auditory processing deficits stem from a failure to respond to sound in a consistent manner...
January 6, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29306471/correlation-between-frequency-domain-optical-coherence-tomography-and-fractional-flow-reserve-in-angiographically-intermediate-coronary-lesions
#9
Francesco Burzotta, Roberto Nerla, Jonathan Hill, Lazzaro Paraggio, Antonio Maria Leone, Jonathan Byrne, Italo Porto, Giampaolo Niccoli, Cristina Aurigemma, Carlo Trani, Philip MacCarthy, Filippo Crea
BACKGROUND: The decision-making process of patients with angiographically-intermediate coronary lesions (ICL) is clinically challenging and may benefit from adjunctive invasive techniques. Fractional-flow-reserve (FFR) represents the gold standard to evaluate ICL but frequency-domain optical-coherence-tomography (OCT) is a novel, promising, high resolution coronary imaging technique, which allows physiopathologic assessment of coronary plaque. We investigated the possible relation between OCT and FFR in selected ICL patients...
February 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29298341/3d-reconstruction-of-coronary-arteries-from-2d-angiographic-projections-using-non-uniform-rational-basis-splines-nurbs-for-accurate-modelling-of-coronary-stenoses
#10
Francesca Galassi, Mohammad Alkhalil, Regent Lee, Philip Martindale, Rajesh K Kharbanda, Keith M Channon, Vicente Grau, Robin P Choudhury
OBJECTIVE: Assessment of coronary stenosis severity is crucial in clinical practice. This study proposes a novel method to generate 3D models of stenotic coronary arteries, directly from 2D coronary images, and suitable for immediate assessment of the stenosis severity. METHODS: From multiple 2D X-ray coronary arteriogram projections, 2D vessels were extracted. A 3D centreline was reconstructed as intersection of surfaces from corresponding branches. Next, 3D luminal contours were generated in a two-step process: first, a Non-Uniform Rational B-Spline (NURBS) circular contour was designed and, second, its control points were adjusted to interpolate computed 3D boundary points...
2018: PloS One
https://www.readbyqxmd.com/read/29273569/forensic-face-recognition-as-a-means-to-determine-strength-of-evidence-a-survey
#11
REVIEW
C G Zeinstra, D Meuwly, A Cc Ruifrok, R Nj Veldhuis, L J Spreeuwers
This paper surveys the literature on forensic face recognition (FFR), with a particular focus on the strength of evidence as used in a court of law. FFR is the use of biometric face recognition for several applications in forensic science. It includes scenarios of ID verification and open-set identification, investigation and intelligence, and evaluation of the strength of evidence. We present FFR from operational, tactical, and strategic perspectives. We discuss criticism of FFR and we provide an overview of research efforts from multiple perspectives that relate to the domain of FFR...
January 2018: Forensic Science Review
https://www.readbyqxmd.com/read/29249439/ffr-guided-multivessel-stenting-reduces-urgent-revascularization-compared-with-infarct-related-artery-only-stenting-in-st-elevation-myocardial-infarction-a-meta-analysis-of-randomized-controlled-trials
#12
Ankur Gupta, Navkaranbir S Bajaj, Pankaj Arora, Garima Arora, Arman Qamar, Deepak L Bhatt
BACKGROUND: Randomized controlled trials (RCTs) have shown fractional flow reserve-guided (FFR) multivessel stenting to be superior to infarct-related artery (IRA) only stenting in patients with ST-elevation myocardial infarction (STEMI) and multivessel disease. This effect was mainly driven by a reduction in overall repeat revascularization. However, the ability to assess the effect of this strategy on urgent revascularization or reinfarction was underpowered in individual trials. METHODS: We searched Pubmed, EMBASE, Cochrane CENTRAL, and Web of Science for RCTs of FFR-guided multivessel stenting versus IRA-only stenting in STEMI with multivessel disease...
February 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29248645/diagnostic-value-of-transluminal-attenuation-gradient-for-the-presence-of-ischemia-as-defined-by-fractional-flow-reserve-and-quantitative-positron-emission-tomography
#13
Michiel J Bom, Roel S Driessen, Wynand J Stuijfzand, Pieter G Raijmakers, Cornelis C Van Kuijk, Adriaan A Lammertsma, Albert C van Rossum, Niels van Royen, Juhani Knuuti, Maija Mäki, Koen Nieman, James K Min, Jonathon A Leipsic, Ibrahim Danad, Paul Knaapen
OBJECTIVES: The aim of this study was to investigate the incremental diagnostic value of transluminal attenuation gradient (TAG), TAG with corrected contrast opacification (TAG-CCO), and transluminal diameter gradient (TDG) over coronary computed tomography angiography (CTA)-derived diameter stenosis alone for the identification of ischemia as defined by both the invasive reference standard fractional flow reserve (FFR) and the noninvasive reference standard quantitative positron emission tomography (PET)...
December 8, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29246917/acist-ffr-study-assessment-of-catheter-based-interrogation-and-standard-techniques-for-fractional-flow-reserve-measurement
#14
William F Fearon, Jeffrey W Chambers, Arnold H Seto, Ian J Sarembock, Ganesh Raveendran, Charlotte Sakarovitch, Lingyao Yang, Manisha Desai, Allen Jeremias, Matthew J Price
BACKGROUND: Measurement of fractional flow reserve (FFR) to guide coronary revascularization lags despite robust supportive data, partly because of the handling characteristics of traditional coronary pressure wires. An optical pressure-monitoring microcatheter, which can be advanced over a traditional coronary guidewire, facilitates FFR assessment but may underestimate pressure wire-derived FFR. METHODS AND RESULTS: In this prospective, multicenter trial, 169 patients underwent FFR assessment with a pressure wire alone and with a pressure microcatheter over the pressure wire...
December 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29246913/postocclusional-hyperemia-for-fractional-flow-reserve-after-percutaneous-coronary-intervention
#15
Yoshiaki Kawase, Hiroyuki Omori, Masanori Kawasaki, Toru Tanigaki, Tetsuo Hirata, Syuuichi Okamoto, Hideaki Ota, Jun Kikuchi, Munenori Okubo, Hiroki Kamiya, Akihiro Hirakawa, Takahiko Suzuki, Hitoshi Matsuo
BACKGROUND: Postocclusional hyperemia caused by balloon occlusion is a potential alternative method of inducing hyperemia for measuring post-percutaneous coronary intervention fractional flow reserve (FFR). The aim of this study was to investigate postocclusional hyperemia as a method of inducing hyperemia. METHODS AND RESULTS: FFR measured by postocclusional hyperemia (FFRoccl) caused by balloon occlusion after percutaneous coronary intervention was compared with FFR measured by drug-induced hyperemia (FFR measured by intravenous ATP; and FFR measured by intracoronary papaverine injection [FFRpap]) in 98 lesions from 98 patients...
December 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29246509/diagnostic-concordance-and-clinical-outcomes-in-patients-undergoing-fractional-flow-reserve-and-stress-echocardiography-for-the-assessment-of-coronary-stenosis-of-intermediate-severity
#16
Sothinathan Gurunathan, Asrar Ahmed, Anastasia Vamvakidou, Ihab S Ramzy, Mohammed Akhtar, Aamir Ali, Nikos Karogiannis, Spiros Zidros, Gothandaraman Balaji, Grace Young, Ahmed Elghamaz, Roxy Senior
BACKGROUND: The ischemic consequences of coronary artery stenosis can be assessed by invasive fractional flow reserve (FFR) or by noninvasive imaging. We sought to determine (1) the concordance between wall thickening assessment during clinically indicated stress echocardiography (SE) and FFR measurements and (2) the factors associated with hard events in these patients. METHODS: Two hundred twenty-three consecutive patients who underwent SE and invasive FFR measurements in close succession were analyzed retrospectively for diagnostic concordance and clinical outcomes...
December 12, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29246484/testing-native-language-neural-commitment-at-the-brainstem-level-a-cross-linguistic-investigation-of-the-association-between-frequency-following-response-and-speech-perception
#17
Luodi Yu, Yang Zhang
A current topic in auditory neurophysiology is how brainstem sensory coding contributes to higher-level perceptual, linguistic and cognitive skills. This cross-language study was designed to compare frequency following responses (FFRs) for lexical tones in tonal (Mandarin Chinese) and non-tonal (English) language users and test the correlational strength between FFRs and behavior as a function of language experience. The behavioral measures were obtained in the Garner paradigm to assess how lexical tones might interfere with vowel category and duration judgement...
December 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29240450/letter-in-response-to-tp-e-interval-and-tp-e-qt-ratio-before-and-after-catheter-ablation-in-patients-with-premature-ventricular-complexes
#18
Ahmet Korkmaz, Deniz Sahin, Umit Guray
AIM: Recently fragmented QRS (fQRS) on ECG has been introduced as a predictor of myocardial scarring and myocardial ischemia in coronary artery disease. OBJECTIVE: The aim of this study was to investigate the relationship between fQRS and fractional flow reserve (FFR) results in patients with the intermediate degree of coronary artery stenosis. METHODS: A total of 301 consecutive patients who underwent coronary angiography and FFR measurement for intermediate coronary artery stenosis were included in the study...
December 14, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/29226818/rate-response-programming-tailored-to%C3%A2-the-force-frequency-relationship-improves-exercise-tolerance-in-chronic-heart-failure
#19
John Gierula, Maria F Paton, Judith E Lowry, Haqeel A Jamil, Rowenna Byrom, Michael Drozd, Jack O Garnham, Richard M Cubbon, David A Cairns, Mark T Kearney, Klaus K Witte
OBJECTIVES: This study sought to examine whether the heart rate (HR) at which the force-frequency relationship (FFR) slope peaks (critical HR) could be used to tailor HR response in chronic heart failure (CHF) patients with cardiac pacemakers and whether this favorably influences exercise capacity. BACKGROUND: CHF secondary to left ventricular (LV) systolic dysfunction is characterized by blunting of the positive relationship between HR and LV contractility known as the FFR...
November 27, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29226576/deferred-lesion-failure-in-diabetes-a-truly-bad-actor
#20
EDITORIAL
Arnold H Seto, Morton J Kern
DM patients with stenoses whose FFR > 0.80 have a relatively high 14% rate of deferred lesion failure (i.e., revascularization or MI). IDDM and prior revascularization were independent predictors of deferred lesion failure FFR predicts outcomes, but is a less effective predictor in diabetics due to diffuse atherosclerosis microvascular disease.
December 1, 2017: Catheterization and Cardiovascular Interventions
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