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  • Journal article
    Kaura A, Panoulas V, Glampson B, Davies J, Mulla A, Woods K, Omigie J, Shah A, Channon K, Weber J, Thursz M, Elliott P, Hemingway H, Williams B, Asselbergs F, OSullivan M, Kharbanda R, Lord G, Melikian N, Patel R, Perera D, Shah A, Francis D, Mayet Jet al., 2019,

    Association of troponin level and age with mortality in 250 000 patients: cohort study across five UK acute care centres

    , BMJ-British Medical Journal, Vol: 367, ISSN: 1756-1833

    ObjectiveTo determine the relation between age and troponinlevel and its prognostic implication.DesignRetrospective cohort study.SettingFive cardiovascular centres in the UK National Institutefor Health Research Health Informatics Collaborative(UK-NIHR HIC).Participants257948 consecutive patients undergoing troponintesting for any clinical reason between 2010 and2017.Main outcome measureAll cause mortality.Results257948 patients had troponin measured during thestudy period. Analyses on troponin were performedusing the peak troponin level, which was the highesttroponin level measured during the patient’s hospitalstay. Troponin levels were standardised as a multipleof each laboratory’s 99th centile of the upper limitof normal (ULN). During a median follow-up of 1198days (interquartile range 514-1866 days), 55850(21.7%) deaths occurred. A positive troponin result(that is, higher than the upper limit of normal)signified an overall 3.2-fold higher mortality hazard(95% confidence interval 3.1-fold to 3.2-fold) overthree years. The mortality hazard varied markedly withage, from 10.6-fold (8.5-fold to 13.3-fold) in 18-29year olds to 1.5 (1.4 to 1.6) in those older than 90.A positive troponin result was associated with anapproximately 15 percentage points higher absolutethree year mortality across all age groups. The excessmortality with a positive troponin result was heavilyconcentrated in the first few weeks. Results wereanalysed using multivariable adjusted restrictedcubic spline Cox regression. A direct relation wasseen between troponin level and mortality in patientswithout acute coronary syndrome (ACS, n=120049),whereas an inverted U shaped relation was foundin patients with ACS (n=14468), with a paradoxicaldecline in mortality at peak troponin levels >70xULN.In the group with ACS, the inverted U shaped relationpersisted after multivariable adjustment in those whowere managed invasively; however, a direct positiverelation was found between troponin level

  • Journal article
    Al-Lamee R, Shun-Shin M, Howard J, Nowbar A, Rajkumar C, Thompson D, Sen S, Nijjer S, Petraco R, Davies J, Keeble T, Tang K, Malik I, Bual N, Cook C, Ahmad Y, Seligman H, Sharp A, Gerber R, Talwar S, Assomull R, Cole G, Keenan N, Kanaganayagam G, Sehmi J, Wensel R, Harrell Jr F, Mayet J, Thom S, Davies J, Francis Det al., 2019,

    Dobutamine stress echocardiography ischemia as a predictor of the placebo-controlled efficacy of percutaneous coronary intervention in stable coronary artery disease: the stress echo-stratified analysis of ORBITA

    , Circulation, Vol: 140, Pages: 1971-1980, ISSN: 0009-7322

    BackgroundDobutamine stress echocardiography (DSE) is widely used to test for ischemia in patients with stable coronary artery disease (CAD). In this analysis we studied the ability of pre-randomization stress echo score to predict the placebo-controlled efficacy of percutaneous coronary intervention (PCI) within the ORBITA trial. MethodsOne hundred and eighty-three patients underwent DSE before randomization. The stress echo score is broadly the number of segments abnormal at peak stress, with akinetic segments counting double and dyskinetic segments counting triple. The ability of pre-randomization stress echo to predict the placebo-controlled effect of PCI on response variables was tested using regression modelling.ResultsAt pre-randomization, the stress echo score was 1.561.77 in the PCI arm (n=98) and 1.611.73 in the placebo arm (n=85). There was a detectable interaction between pre-randomization stress echo score and the effect of PCI on angina frequency score with a larger placebo-controlled effect in patients with the highest stress echo score (pinteraction=0.031). With our sample size we were unable to detect an interaction between stress echo score and any other patient-reported response variables: freedom from angina (pinteraction=0.116), physical limitation (pinteraction=0.461), quality of life (pinteraction=0.689), EQ-5D-5L quality of life score (pinteraction=0.789) or between stress echo score and physician-assessed Canadian Cardiovascular Society angina class (pinteraction=0.693), and treadmill exercise time (pinteraction=0.426). ConclusionsThe degree of ischemia assessed by DSE predicts the placebo-controlled efficacy of PCI on patient-reported angina frequency. The greater the downstream stress echo abnormality caused by a stenosis, the greater the reduction in symptoms from PCI.

  • Journal article
    ShunShin MJ, Miyazawa AA, Keene D, Sterliński M, Sokal A, Heuverswyn F, Rinaldi CA, Cornelussen R, Stegemann B, Francis DP, Whinnett Zet al., 2019,

    How to deliver personalized Cardiac Resynchronization Therapy through the precise measurement of the acute hemodynamic response: insights from the iSpot trial

    , Journal of Cardiovascular Electrophysiology, Vol: 30, Pages: 1610-1619, ISSN: 1045-3873

    IntroductionNew pacing technologies offer greater choice of left ventricular pacing sites and greater personalization of cardiac resynchronization therapy (CRT). The effects on cardiac function of novel pacing configurations are often compared using multi‐beat averages of acute hemodynamic measurements. In this analysis of the iSpot trial we explore whether this is sufficient.MethodsThe iSpot trial was an international, prospective, acute hemodynamic trial that assessed seven CRT configurations: Standard CRT, Multispot (posterolateral vein), and Multivein (anterior and posterior vein) pacing. Invasive and non‐invasive blood pressure, and LV dP/dtmax were recorded. Eight beats were recorded before and after an alternation from AAI to the tested pacing configuration and vice‐versa. Eight alternations were performed for each configuration at each of the 5 AV delays.Results25 patients underwent the full protocol of 8 alternations. Only 4 (16%) patients had a statistically significant >3mmHg improvement over conventional CRT configuration (posterolateral vein, distal electrode). However, if only one alternation was analyzed (standard multi‐beat averaging protocol), 15 (60%) patients falsely appeared to have a superior non‐conventional configuration. Responses to pacing were significantly correlated between the different hemodynamic measures: invasive SBP versus non‐invasive SBP r=0.82 (p<0.001); invasive SBP versus LV dP/dt r=0.57, r2=0.32 (p<0.001).ConclusionsCurrent standard multi‐beat acquisition protocols are unfortunately unable to prevent false impressions of optimality arising in individual patients. Personalization processes need to include distinct repeated transitions to the tested pacing configuration in addition to averaging multiple beats. The need is not only during research stages, but also during clinical implementation.

  • Journal article
    Whinnett Z, Sohaib SMA, Mason M, Duncan E, Tanner M, Lefroy D, Al-Obaidi M, Ellery S, Leyva-Leon F, Betts T, Dayer M, Foley P, Swinburn J, Thomas M, Khiani R, Wong T, Yousef Z, Rogers D, Kalra P, Dhileepan V, March K, Howard J, Kyriacou A, Mayet J, Kanagaratnam P, Frenneaux M, Hughes A, Francis Det al., 2019,

    Multicenter randomized controlled crossover trial comparing hemodynamic optimization against echocardiographic optimization of AV and VV delay of Cardiac Resynchronization Therapy: The BRAVO Trial

    , JACC: Cardiovascular Imaging, Vol: 12, Pages: 1407-1416, ISSN: 1936-878X

    ObjectivesBRAVO (British Randomized Controlled Trial of AV and VV Optimization) is a multicenter, randomized, crossover, noninferiority trial comparing echocardiographic optimization of atrioventricular (AV) and interventricular delay with a noninvasive blood pressure method.BackgroundCardiac resynchronization therapy including AV delay optimization confers clinical benefit, but the optimization requires time and expertise to perform.MethodsThis study randomized patients to echocardiographic optimization or hemodynamic optimization using multiple-replicate beat-by-beat noninvasive blood pressure at baseline; after 6 months, participants were crossed over to the other optimization arm of the trial. The primary outcome was exercise capacity, quantified as peak exercise oxygen uptake. Secondary outcome measures were echocardiographic left ventricular (LV) remodeling, quality-of-life scores, and N-terminal pro–B-type natriuretic peptide.ResultsA total of 401 patients were enrolled, the median age was 69 years, 78% of patients were men, and the New York Heart Association functional class was II in 84% and III in 16%. The primary endpoint, peak oxygen uptake, met the criterion for noninferiority (pnoninferiority = 0.0001), with no significant difference between the hemodynamically optimized arm and echocardiographically optimized arm of the trial (mean difference 0.1 ml/kg/min). Secondary endpoints for noninferiority were also met for symptoms (mean difference in Minnesota score 1; pnoninferiority = 0.002) and hormonal changes (mean change in N-terminal pro–B-type natriuretic peptide -10 pg/ml; pnoninferiority = 0.002). There was no significant difference in LV size (mean change in LV systolic dimension 1 mm; pnoninferiority < 0.001; LV diastolic dimension 0 mm; pnoninferiority <0.001). In 30% of patients the AV delay identified as optimal was more than 20 ms from the nominal setting of 120 ms.ConclusionsOptimization of cardiac resynchronization therapy

  • Journal article
    Mora S, Chang CL, Moorthy MV, Sever PSet al., 2019,

    Association of nonfasting vs fasting lipid levels with risk of major coronary events in the Anglo-Scandinavian cardiac outcomes trial-lipid lowering arm

    , JAMA Internal Medicine, Vol: 179, Pages: 898-905, ISSN: 2168-6114

    Importance: Recent guidelines have recommended nonfasting for routine testing of lipid levels based on comparisons of nonfasting and fasting populations. However, no previous study has examined the association of cardiovascular outcomes with fasting vs nonfasting lipid levels measured in the same individuals. Objective: To compare the association of nonfasting and fasting lipid levels with prospectively ascertained coronary and vascular outcomes and to evaluate whether a strategy of using nonfasting instead of fasting lipid level measurement would result in misclassification of risk for individuals undergoing evaluation for initiation of statin therapy. Design, Setting, and Participants: This post hoc prospective follow-up of a randomized clinical trial included 8270 of 10 305 participants from the Anglo-Scandinavian Cardiac Outcomes Trial-Lipid Lowering Arm (ASCOT-LLA) with nonfasting and fasting lipid levels measured 4 weeks apart (including 6855 participants with no prior vascular disease) (median follow-up, 3.3 years; interquartile range, 2.8-3.6 years). Data were collected from February 1, 1998, to December 31, 2002, and analyzed from February 1, 2016, to November 30, 2018. Multivariable Cox models, adjusted for cardiovascular risk factors, were calculated for 40-mg/dL (1-mmol/L) higher values of nonfasting and fasting lipids. Main Outcomes and Measures: The trial's primary end point consisted of major coronary events (nonfatal myocardial infarction [MI] and fatal coronary heart disease [212 events]). Secondary analyses examined atherosclerotic cardiovascular disease (ASCVD) events (including MI, stroke, and ASCVD death [351 events]). Results: Among the 8270 participants (82.1% male; mean [SD] age, 63.4 [8.5] years), nonfasting samples had modestly higher triglyceride levels and similar cholesterol levels compared to fasting samples. Associations of nonfasting lipid levels with coronary events were similar to those for fasting lipid levels. For example, adjuste

  • Journal article
    Murphy SA, Pedersen TR, Gaciong ZA, Ceska R, Ezhov MV, Connolly DL, Jukema JW, Toth K, Tikkanen MJ, Im K, Wiviott SD, Kurtz CE, Honarpour N, Giugliano RP, Keech AC, Sever PS, Sabatine MSet al., 2019,

    Effect of the PCSK9 inhibitor evolocumab on total cardiovascular events in patients with cardiovascular disease: A prespecified analysis from the FOURIER Trial

    , JAMA Cardiology, Vol: 4, Pages: 613-619, ISSN: 2380-6583

    Importance: The PCSK9 inhibitor evolocumab reduced low-density lipoprotein cholesterol and first cardiovascular events in the Further Cardiovascular Outcomes Research With PCSK9 Inhibition in Subjects With Elevated Risk (FOURIER) trial, but patients remain at high risk of recurrent cardiovascular events. Objective: To evaluate the effect of evolocumab on total cardiovascular events, given the importance of total number of cardiovascular events to patients, clinicians, and health economists. Design, Setting, and Participants: Secondary analysis of a randomized, double-blind clinical trial. The FOURIER trial compared evolocumab or matching placebo and followed up patients for a median of 2.2 years. The study included 27 564 patients with stable atherosclerotic disease receiving statin therapy. Data were analyzed between May 2017 and February 2019. Main Outcomes and Measures: The primary end point (PEP) was time to first cardiovascular death, myocardial infarction, stroke, hospitalization for unstable angina, or coronary revascularization; the key secondary end point was time to first cardiovascular death, myocardial infarction, or stroke. In a prespecified analysis, total cardiovascular events were evaluated between treatment arms. Results: The mean age of patients was 63 years, 69% of patients were taking high-intensity statin therapy, and the median LDL-C at baseline was 92 mg/dL (to convert to millimoles per liter, multiply by 0.0259). There were 2907 first PEP events and 4906 total PEP events during the trial. Evolocumab reduced total PEP events by 18% (incidence rate ratio [RR], 0.82; 95% CI, 0.75-0.90; P < .001) including both first events (hazard ratio, 0.85; 95% CI, 0.79-0.92; P < .001) and subsequent events (RR, 0.74; 95% CI, 0.65-0.85). There were 2192 total primary events in the evolocumab group and 2714 total events in the placebo group. For every 1000 patients treated for 3 years, evolocumab prevented 22 first PEP events

  • Journal article
    Arnold A, Shun-Shin M, Keene D, Howard J, Sohaib S, wright I, Cole G, Qureshi N, lefroy D, Koa-Wing M, Linton N, Lim P, Peters N, Davies D, muthumala A, Tanner M, ellenbogen K, Kanagaratnam P, Francis D, Whinnett Zet al., 2018,

    His resynchronization versus biventricular pacing in patients with heart failure and left bundle branch block

    , Journal of the American College of Cardiology, Vol: 72, Pages: 3112-3122, ISSN: 0735-1097

    Background His bundle pacing is a new method for delivering cardiac resynchronization therapy (CRT).Objectives The authors performed a head-to-head, high-precision, acute crossover comparison between His bundle pacing and conventional biventricular CRT, measuring effects on ventricular activation and acute hemodynamic function.Methods Patients with heart failure and left bundle branch block referred for conventional biventricular CRT were recruited. Using noninvasive epicardial electrocardiographic imaging, the authors identified patients in whom His bundle pacing shortened left ventricular activation time. In these patients, the authors compared the hemodynamic effects of His bundle pacing against biventricular pacing using a high-multiple repeated alternation protocol to minimize the effect of noise, as well as comparing effects on ventricular activation.Results In 18 of 23 patients, left ventricular activation time was significantly shortened by His bundle pacing. Seventeen patients had a complete electromechanical dataset. In them, His bundle pacing was more effective at delivering ventricular resynchronization than biventricular pacing: greater reduction in QRS duration (−18.6 ms; 95% confidence interval [CI]: −31.6 to −5.7 ms; p = 0.007), left ventricular activation time (−26 ms; 95% CI: −41 to −21 ms; p = 0.002), and left ventricular dyssynchrony index (−11.2 ms; 95% CI: −16.8 to −5.6 ms; p < 0.001). His bundle pacing also produced a greater acute hemodynamic response (4.6 mm Hg; 95% CI: 0.2 to 9.1 mm Hg; p = 0.04). The incremental activation time reduction with His bundle pacing over biventricular pacing correlated with the incremental hemodynamic improvement with His bundle pacing over biventricular pacing (R = 0.70; p = 0.04).Conclusions His resynchronization delivers better ventricular resynchronization, and greater improvement in hemodynamic parameters, than biventricular pacing.

  • Journal article
    Al-Lamee R, Howard JP, Shun-Shin MJ, Thompson D, Dehbi H-M, Sen S, Nijjer S, Petraco R, Davies J, Keeble T, Tang K, Malik IS, Cook C, Ahmad Y, Sharp ASP, Gerber R, Baker C, Kaprielian R, Talwar S, Assomull R, Cole G, Keenan NG, Kanaganayagam G, Sehmi J, Wensel R, Harrell FE, Mayet J, Thom SA, Davies JE, Francis DPet al., 2018,

    Fractional flow reserve and instantaneous wave-free ratio as predictors of the placebo-controlled response to percutaneous coronary intervention in stable single-vessel coronary artery disease: physiology-stratified analysis of ORBITA

    , Circulation, Vol: 138, Pages: 1780-1792, ISSN: 0009-7322

    BACKGROUND : There are no data on how fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are associated with the placebo-controlled efficacy of percutaneous coronary intervention (PCI) in stable single-vessel coronary artery disease. METHODS : We report the association between prerandomization invasive physiology within ORBITA (Objective Randomised Blinded Investigation With Optimal Medical Therapy of Angioplasty in Stable Angina), a placebo-controlled trial of patients who have stable angina with angiographically severe single-vessel coronary disease clinically eligible for PCI. Patients underwent prerandomization research FFR and iFR assessment. The operator was blinded to these values. Assessment of response variables, treadmill exercise time, stress echocardiography score, symptom frequency, and angina severity were performed at prerandomization and blinded follow-up. Effects were calculated by analysis of covariance. The ability of FFR and iFR to predict placebo-controlled changes in response variables was tested by using regression modeling. RESULTS : Invasive physiology data were available in 196 patients (103 PCI and 93 placebo). At prerandomization, the majority had Canadian Cardiovascular Society class II or III symptoms (150/196, 76.5%). Mean FFR and iFR were 0.69±0.16 and 0.76±0.22, respectively; 97% had ≥1 positive ischemia tests. The estimated effect of PCI on between-arm prerandomization-adjusted total exercise time was 20.7 s (95% confidence interval [CI], -4.0 to 45.5; P=0.100) with no interaction of FFR (Pinteraction=0.318) or iFR (Pinteraction=0.523). PCI improved stress echocardiography score more than placebo (1.07 segment units; 95% CI, 0.70-1.44; P<0.00001). The placebo-controlled effect of PCI on stress echocardiography score increased progressively with decreasing FFR (Pinteraction<0.00001) and

  • Journal article
    Ahmad Y, Howard J, Arnold A, Shun-Shin MJ, Cook C, Petraco R, Demir O, Williams L, Igelsias J, Sutaria N, Malik I, Davies J, Mayet J, Francis D, Sen Set al., 2018,

    Patent foramen ovale closure versus medical therapy for cryptogenic stroke: a meta-analysis of randomised controlled trials

    , European Heart Journal, Vol: 39, Pages: 1638-1649, ISSN: 1522-9645

    BackgroundThe efficacy of patent foramen ovale (PFO) closure for cryptogenic stroke has been controversial. We undertook a meta-analysis of randomised controlled trials (RCTs) comparing device closure with medical therapy to prevent recurrent stroke for patients with PFO.Methods and ResultsWe systematically identified all RCTs comparing device closure to medical therapy for cryptogenic stroke in patients with PFO. The primary efficacy endpoint was recurrent stroke, analysed on an intention-to-treat basis. The primary safety endpoint was new onset atrial fibrillation (AF). 5 studies (3440 patients) were included. 1829 patients were randomised to device closure and 1611 to medical therapy. Across all patients, PFO closure was superior to medical therapy for prevention of stroke (HR 0.32, 95% CI 0.13 to 0.82, p=0.018, I2 = 73.4%). The risk of AF was significantly increased with device closure (RR 4.54, 95% CI 2.17 to 9.48, p<0.001, heterogeneity I2 = 22.9%). In patients with large shunts, PFO closure was associated with a significant reduction in stroke (HR 0.33, 95% CI 0.16 to 0.72, p=0.005), whilst there was no significant reduction in stroke in patients with a small shunt (HR 0.90, 95% CI 0.50 to 1.60, p=0.712). There was no effect from the presence or absence of an atrial septal aneurysm on outcomes (p=0.994).ConclusionIn selected patients with cryptogenic stroke, PFO closure is superior to medical therapy for the prevention of further stroke: this is particularly true for patients with moderate-to-large shunts. Guidelines should be updated to reflect this.

  • Journal article
    Al-Lamee R, Thompson D, Dehbi H-M, Sen S, Tang K, Davies J, Keeble T, Mielewczik M, Kaprielian R, Malik IS, Nijjer SS, Petraco R, Cook C, Ahmad Y, Howard J, Baker C, Sharp A, Gerber R, Talwar S, Assomull R, Mayet J, Wensel R, Collier D, Shun-Shin M, Thom SA, Davies JE, Francis DP, ORBITA investigatorset al., 2018,

    Percutaneous coronary intervention in stable angina (ORBITA): a double-blind, randomised controlled trial

    , Lancet, Vol: 391, Pages: 31-40, ISSN: 0140-6736

    BACKGROUND: Symptomatic relief is the primary goal of percutaneous coronary intervention (PCI) in stable angina and is commonly observed clinically. However, there is no evidence from blinded, placebo-controlled randomised trials to show its efficacy. METHODS: ORBITA is a blinded, multicentre randomised trial of PCI versus a placebo procedure for angina relief that was done at five study sites in the UK. We enrolled patients with severe (≥70%) single-vessel stenoses. After enrolment, patients received 6 weeks of medication optimisation. Patients then had pre-randomisation assessments with cardiopulmonary exercise testing, symptom questionnaires, and dobutamine stress echocardiography. Patients were randomised 1:1 to undergo PCI or a placebo procedure by use of an automated online randomisation tool. After 6 weeks of follow-up, the assessments done before randomisation were repeated at the final assessment. The primary endpoint was difference in exercise time increment between groups. All analyses were based on the intention-to-treat principle and the study population contained all participants who underwent randomisation. This study is registered with, number NCT02062593. FINDINGS: ORBITA enrolled 230 patients with ischaemic symptoms. After the medication optimisation phase and between Jan 6, 2014, and Aug 11, 2017, 200 patients underwent randomisation, with 105 patients assigned PCI and 95 assigned the placebo procedure. Lesions had mean area stenosis of 84·4% (SD 10·2), fractional flow reserve of 0·69 (0·16), and instantaneous wave-free ratio of 0·76 (0·22). There was no significant difference in the primary endpoint of exercise time increment between groups (PCI minus placebo 16·6 s, 95% CI -8·9 to 42·0, p=0·200). There were no deaths. Serious adverse events included four pressure-wire related complications in the placebo group, which required PCI, and five major bleeding

  • Journal article
    Giugliano RP, Pedersen TR, Park J-G, De Ferrari GM, Gaciong ZA, Ceska R, Toth K, Gouni-Berthold I, Lopez-Miranda J, Schiele F, Mach F, Ott BR, Kanevsky E, Pineda AL, Somaratne R, Wasserman SM, Keech AC, Sever PS, Sabatine MS, FOURIER Investigatorset al., 2017,

    Clinical efficacy and safety of achieving very low LDL-cholesterol concentrations with the PCSK9 inhibitor evolocumab: a prespecified secondary analysis of the FOURIER trial

    , Lancet, Vol: 390, Pages: 1962-1971, ISSN: 0140-6736

    BACKGROUND: LDL cholesterol is a well established risk factor for atherosclerotic cardiovascular disease. How much one should or safely can lower this risk factor remains debated. We aimed to explore the relationship between progressively lower LDL-cholesterol concentrations achieved at 4 weeks and clinical efficacy and safety in the FOURIER trial of evolocumab, a monoclonal antibody to proprotein convertase subtilisin-kexin type 9 (PCSK9). METHODS: In this prespecified secondary analysis of 25 982 patients from the randomised FOURIER trial, the relationship between achieved LDL-cholesterol concentration at 4 weeks and subsequent cardiovascular outcomes (primary endpoint was the composite of cardiovascular death, myocardial infarction, stroke, coronary revascularisation, or unstable angina; key secondary endpoint was the composite of cardiovascular death, myocardial infarction, or stroke) and ten prespecified safety events of interest was examined over a median of 2·2 years of follow-up. We used multivariable modelling to adjust for baseline factors associated with achieved LDL cholesterol. This trial is registered with, number NCT01764633. FINDINGS: Between Feb 8, 2013, and June 5, 2015, 27 564 patients were randomly assigned a treatment in the FOURIER study. 1025 (4%) patients did not have an LDL cholesterol measured at 4 weeks and 557 (2%) had already had a primary endpoint event or one of the ten prespecified safety events before the week-4 visit. From the remaining 25 982 patients (94% of those randomly assigned) 13 013 were assigned evolocumab and 12 969 were assigned placebo. 2669 (10%) of 25 982 patients achieved LDL-cholesterol concentrations of less than 0·5 mmol/L, 8003 (31%) patients achieved concentrations between 0·5 and less than 1·3 mmol/L, 3444 (13%) patients achieved concentrations between 1·3 and less than 1·8 mmol/L, 7471 (29%) patients achieved concentrations between 1·8 to less

  • Journal article
    Davies JE, Sen S, Dehbi H-M, Al-Lamee R, Petraco R, Nijjer SS, Bhindi R, Lehman SJ, Walters D, Sapontis J, Janssens L, Vrints CJ, Khashaba A, Laine M, Van Belle E, Krackhardt F, Bojara W, Going O, Harle T, Indolfi C, Niccoli G, Ribichini F, Tanaka N, Yokoi H, Takashima H, Kikuta Y, Erglis A, Vinhas H, Silva PC, Baptista SB, Alghamdi A, Hellig F, Koo B-K, Nam C-W, Shin E-S, Doh J-H, Brugaletta S, Alegria-Barrero E, Meuwissen M, Piek JJ, van Royen N, Sezer M, Di Mario C, Gerber RT, Malik IS, Sharp ASP, Talwar S, Tang K, Samady H, Altman J, Seto AH, Singh J, Jeremias A, Matsuo H, Kharbanda RK, Patel MR, Serruys P, Escaned Jet al., 2017,

    Use of the Instantaneous Wave-free Ratio or Fractional Flow Reserve in PCI

    , NEW ENGLAND JOURNAL OF MEDICINE, Vol: 376, Pages: 1824-1834, ISSN: 0028-4793

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