Contemporary data on low-density lipoprotein cholesterol target value attainment and distance to target in a cohort of 57,885 statin-treated patients by country and region across the world.

Data presented here refer to 57,885 patients on lipid-lowering statin therapy from the Dyslipidaemia International Study (DYSIS) registry. Subjects were divided into 3 discrete subsets: those at very high-risk, high-risk, and non-high-risk for cardiovascular events, with assigned low density lipoprotein cholesterol (LDL-C) targets of 70 mg/dl, 100 mg/dl and 115 mg/dl, respectively. Overall, the highest proportion of patients meeting their LDL-C target was seen in the UAE and Kuwait (49.5%), while the lowest was seen in Germany (14.3%). The smallest median distance to target was documented in Canada (18.8 mg/dl), and the largest in the Baltics (42.1 mg/dl). Interpretation and discussion of this data can be found in the manuscript entitled "Low-density lipoprotein cholesterol in a global cohort of 57,885 statin-treated patients" (Gitt et al., 2016) [1].

Low-density lipoprotein cholesterol in a global cohort of 57,885 statin-treated patients.

BACKGROUND AND AIMS: There is an inconsistency between international guidelines on lipid-lowering treatment regarding whether to pursue LDL-C treatment targets or to focus on the intensity of treatment. While either approach is attractive, there is no recent global data on actual LDL-C values, treatment targets attained, and the intensity of treatment in statin-treated patients. We aimed to determine and compare the extent of treatment target attainment globally using standardized data collection. METHODS: Analyses were based on the Dyslipidemia International Study (DYSIS), a cross-sectional study documenting statin-treated outpatients throughout 30 countries worldwide (across Europe, the Middle East, Canada, Africa, and Asia). Patients were classified as being at very high, high, or non-high cardiovascular risk based on the 2011 European Society of Cardiology (ESC)/European Atherosclerosis Society (EAS) guidelines. RESULTS: Data were available for a total of 57,885 patients with a median LDL-C value of 98.2 mg/dl (IQR: 76.6, 125.7 mg/dl). Overall, only 26.8% of patients were documented to have attained their risk-based target LDL-C level. Of the 76% of patients who were classified as being at very high risk, only 21.7% attained their LDL-C goal. Globally, the median distance to target was 33.0 mg/dl, ranging from 18.8 to 42.1 mg/dl across countries. We calculated that a further LDL-C reduction of just 10 mg/dl would result in an 11% increase in the proportion of very-high-risk and high-risk patients attaining their target level (9% for non-high risk patients). CONCLUSIONS: In spite of statin therapy, LDL-C values were high, with a substantial distance to target that was even more pronounced in (very) high risk patients. These results call for the optimization of existing treatment strategies and a collaborative effort to improve the impact of treatment guidance on clinical practice.

Contemporary real life cardioversion of atrial fibrillation: Results from the multinational RHYTHM-AF study.

AIMS: Electrical and pharmacological cardioversion (ECV, PCV) are important treatment options for symptomatic patients with recent onset atrial fibrillation (AF). RHYTHM-AF is an international registry of present-day cardioversion providing information that is not currently available on country differences and acute and long-term arrhythmia outcomes of ECV and PCV. METHODS AND RESULTS: 3940 patients were enrolled, of whom 75% underwent CV. All patients were followed for 2 months. There were large variations concerning mode of CV used, ECV being heterogeneous. A choice of PCV drug depended on the clinical patient profile. Sinus rhythm was restored in 89.7% of patients by ECV and in 69.1% after PCV. Among patients not undergoing CV during admission, 34% spontaneously converted to sinus rhythm within 24h. ECV was most successful in patients pretreated with antiarrhythmic drugs (mostly amiodarone). PCV was enhanced by class Ic antiarrhythmic drugs; conversion rate on amiodarone was similar to that seen with rate control drugs. Female patients and those with paroxysmal and first detected AF as well as those without previous ECV responded well to PCV. The median duration of hospital stay was 16.2 and 24.0 h for ECV and PCV patients, respectively. There were very few CV-related complications regardless of mode of CV. Chronic maintenance of sinus rhythm was enhanced in patients on chronic antiarrhythmic drugs, beta-blockers or inhibitors of the renin-angiotensin system. CONCLUSIONS: Mode of CV varied significantly, but both PCV and ECV were safe and effective. Class Ic drugs were most effective conversion drugs, but amiodarone is used most frequently despite providing merely rate control rather than shorten time to conversion.

Overtreatment and undertreatment with anticoagulation in relation to cardioversion of atrial fibrillation (the RHYTHM-AF study).

Antithrombotic therapy is central to the management of atrial fibrillation. This analysis from the RHYTHM-atrial fibrillation (RHYTHM-AF) registry explored the appropriateness of antithrombotic therapy in relation to stroke risk and atrial fibrillation duration in patients with atrial fibrillation. RHYTHM-AF, a prospective multinational registry, enrolled consecutive adult patients with atrial fibrillation considered for cardioversion. We compared the type of antithrombotic therapy administered at the time of cardioversion and at discharge with stroke risk ("high stroke risk" defined by CHA2DS2-VASc >1) and duration of atrial fibrillation (≤48 vs >48 hours or unknown duration). Of 2,972 patients who were cardioverted (34.5% through pharmacologic cardioversion [PCV] and 65.5% through electrical cardioversion [ECV]), 65% were at high risk of stroke and 30% presented with atrial fibrillation of >48-hour or unknown duration. At the time of PCV and ECV, 36% (n = 242) and 84% (n = 1,075) of high-risk patients, respectively, were taking vitamin K antagonists or heparin. At discharge, these rates increased to 62% (n = 414) and 93% (n = 1,191), respectively. Of all low-stroke risk patients with short-duration atrial fibrillation undergoing PCV (n = 260) and ECV (n = 111), 7% (n = 17) and 30% (n = 33), respectively, were taking vitamin K antagonists or heparin at the time of cardioversion. At discharge, these rates increased to 19% (n = 50) and 40% (n = 44), respectively. In conclusion, ECV was frequently performed under appropriate antithrombotic therapy for most high-risk patients with atrial fibrillation, whereas PCV was frequently performed without appropriate antithrombotic therapy. To enhance pericardioversion stroke prevention, cardioversion algorithms should focus less on the type of conversion and more on stroke risk factors and atrial fibrillation duration.

Total lipid management and cardiovascular disease in the dyslipidemia international study.

OBJECTIVES: Despite statin use, many patients with cardiovascular disease (CVD) are not achieving treatment goals. An international observational study was performed to estimate the prevalence of residual lipid abnormalities in statin-treated patients with CVD to assess whether lipid management requires improvement. METHODS: Fasting plasma concentrations of low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) and triglycerides were recorded in 11,104 patients with atherosclerotic CVD and ≥3 months of statin therapy. RESULTS: LDL-C and total cholesterol were not at goal levels in 41 and 46% of all patients, respectively; for patients with peripheral artery disease (PAD) only, 59 and 65%, respectively, were not at goal, and in those with coronary heart disease only, 38 and 42%, respectively, were not at goal. Patients with cerebrovascular disease only were least frequently observed to have low HDL-C (24%) and elevated triglycerides (36%). Overall, elevated LDL-C was the most frequent lipid anomaly observed, and preexisting heart failure was strongly and positively associated with dyslipidemia. CONCLUSIONS: Approximately two fifths of statin-treated patients with CVD are not reaching lipid goals or have abnormal lipid levels, while patients with PAD could particularly benefit from improved lipid management. In addition to targeting LDL-C, new evidence-based approaches are needed to target low HDL-C and elevated triglycerides.

RHYTHM-AF: design of an international registry on cardioversion of atrial fibrillation and characteristics of participating centers.

BACKGROUND: Atrial fibrillation is a serious public health problem posing a considerable burden to not only patients, but the healthcare environment due to high rates of morbidity, mortality, and medical resource utilization. There are limited data on the variation in treatment practice patterns across different countries, healthcare settings and the associated health outcomes. METHODS/DESIGN: RHYTHM-AF was a prospective observational multinational study of management of recent onset atrial fibrillation patients considered for cardioversion designed to collect data on international treatment patterns and short term outcomes related to cardioversion. We present data collected in 10 countries between May 2010 and June 2011. Enrollment was ongoing in Italy and Brazil at the time of data analysis. Data were collected at the time of atrial fibrillation episode in all countries (Australia, Brazil, France, Germany, Italy, Netherlands, Poland, Spain, Sweden, United Kingdom), and cumulative follow-up data were collected at day 60 (±10) in all but Spain. Information on center characteristics, enrollment data, patient demographics, detail of atrial fibrillation episode, medical history, diagnostic procedures, acute treatment of atrial fibrillation, discharge information and the follow-up data on major events and rehospitalizations up to day 60 were collected. DISCUSSION: A total of 3940 patients were enrolled from 175 acute care centers. 70.5% of the centers were either academic (44%) or teaching (26%) hospitals with an overall median capacity of 510 beds. The sites were mostly specialized with anticoagulation clinics (65.9%), heart failure (75.1%) and hypertension clinics (60.1%) available. The RHYTHM-AF registry will provide insight into regional variability of antiarrhythmic and antithrombotic treatment of atrial fibrillation, the appropriateness of such treatments with respect to outcomes, and their cost-efficacy. Observations will help inform strategies to improve cardiovascular outcomes in patients with atrial fibrillation. TRIAL REGISTRATION: Clinical trials NCT01119716.

Persistent lipid abnormalities in statin-treated patients and predictors of LDL-cholesterol goal achievement in clinical practice in Europe and Canada.

BACKGROUND: The prevalence of persistent lipid abnormalities in patients receiving statins in primary and secondary care is needed to formulate recommendations for future treatment. Studies associating cardiovascular risk factors with lipid target goal achievement are lacking. DESIGN: A cross-sectional, observational study that assessed the prevalence of persistent dyslipidemia in patients treated with statins and analyzed predictors of lipid target achievement. METHODS: Serum lipid values of 22,063 statin-treated patients were studied in the context of their cardiovascular risk factors, and the potency and composition of their lipid-lowering treatment. European Society of Cardiology recommendations were used to classify patient risk, and to define LDL-cholesterol goal and normal levels for HDL-cholesterol and triglycerides. RESULTS: Overall, 48.2% of patients did not achieve the therapeutic goal for LDL-cholesterol, either as a single lipid anomaly or associated with low HDL-cholesterol, elevated triglycerides, or both. Lack of goal achievement was more prevalent among low-risk patients (55.8%) than high-risk patients (46.8%). Serum LDL-cholesterol levels were lower in high-risk patients. Predictors associated with LDL-cholesterol goal achievement were higher statin dose (odds ratio (OR): 0.35), specialist treatment (OR: 0.74), or combined lipid-lowering therapy (OR: 0.80). CONCLUSIONS: Nearly half of statin-treated patients missed their therapeutic LDL-cholesterol goal, highlighting a gap between recommendations and clinical practice. Better achievement of LDL-cholesterol therapeutic goal was found among patients at high cardiovascular risk, those on high statin doses or using combination therapy, and patients managed by specialists. Results suggest that residual dyslipidemia in statin-treated patients at low cardiovascular risk may be reduced by increasing statin dose.

Persistent dyslipidemia in Austrian patients treated with statins for primary and secondary prevention of atherosclerotic events - Results of the DYSlipidemia International Study (DYSIS).

BACKGROUND: Statins reduce cardiovascular events by about one third; thus two out of three events occurring without any lipid lowering treatment still might happen under statin treatment. One reason may be that lipid targets are not met. The DYSlipidemia International Study (DYSIS) was performed to determine the prevalence of persistent dyslipidemia despite statin treatment in Austria. PATIENTS AND METHODS: Between April 2008 and February 2009, 910 outpatients on current statin treatment and aged ≥ 45 years were recruited by general practitioners, cardiologists, endocrinologists, and internists. A clinical examination was performed and lipid values were obtained under stable statin therapy. The ESC guidelines version 2007 served as criteria to judge the attainment of treatment targets for LDL cholesterol and to reach normal HDL cholesterol and triglyceride levels. In 765 patients a full lipid profile including fasting cholesterol, fasting triglycerides, HDL-cholesterol, and LDL-cholesterol could be obtained. RESULTS: Of our patients, 74.5% had at least one lipid parameter not at target. Specifically, 52.3% did not reach the LDL-cholesterol target as according to the ESC guidelines 2007 - and 56.4% as according to the Austrian lipid consensus 2010 -, 59.1% had above-target total cholesterol levels and 42.5% had elevated triglyceride levels. In 23% of the patients the HDL cholesterol was below levels associated with increased cardiovascular risk. In patients with only one single value beyond normal or targeted level, LDL cholesterol had a prevalence of 24.3%, HDL of 11.9% and triglycerides of 24.5%. In 8.4% of patients, all 3 parameters, LDL-cholesterol, HDL-cholesterol and triglycerides, were out of range. CONCLUSIONS: About three quarters of the Austrian patients under chronic statin therapy in routine clinical practice failed to meet lipid values as set by international and Austrian guidelines. There is an urgent need for more effective strategies to better control dyslipidemia in statin treated patients with the aim of further reducing cardiovascular events.