[Cost-effectiveness analysis of apixaban versus acetylsalicylic acid in the prevention of stroke in patients with non-valvular atrial fibrillation in Spain]. / Análisis coste-utilidad de apixabán frente al ácido acetilsalicílico en la prevención del ictus en pacientes con fibrilación auricular no valvular en España.

OBJECTIVE: To assess the cost-effectiveness of apixaban versus acetylsalicylic acid (ASA) in stroke prevention in patients with non-valvular atrial fibrillation (NVAF) with contraindications of vitamin K antagonists in Spain. METHODS: A Markov model was adapted, simulating the patient's lifetime. The safety and efficacy of the drugs were obtained from AVERROES clinical trial. The analysis was done from the Spanish National Health System (NHS) and societal perspective. The cost of drugs was calculated according to the recommended doses. The cost of NVAF complications and disease management was obtained from Spanish sources. RESULTS: In a cohort of 1,000 patients with NVAF, during their lifetime numerous complications could be avoided with apixaban versus ASA (48 ischemic strokes, 10 systemic embolism and 53 related deaths). In each patient treated with apixaban more life-years (0.303 LYG) and more quality-adjusted life-years (0.277 QALYs) could be gained. Apixaban would generate more costs per patient for the NHS (€1,742 per patient) but savings would result from the social perspective (€2,887 saved per patient). The cost per LYG and QALY gained would be of €5,749 and €6,289 for the NHS. Apixaban would be dominant (more effective with less costs than ASA) from the societal perspective. The results were stable in both deterministic and probabilistic sensitivity analyses. CONCLUSIONS: According to this model, when costs and estimated lifetime outcomes achieved with apixaban are compared with those of ASA, apixaban was assessed to be a cost-effective treatment for the prevention of stroke in patients with NVAF in Spain.

Care Indicators in Patients With Atrial Fibrillation: Assessment of Sex Differences and Management of Clinical Problems.

INTRODUCTION AND OBJECTIVES: To assess sex differences and the management of clinical problems in patients with atrial fibrillation through the use of care indicators. METHODS: Over a 5-month period, the study included all consecutive patients attended in the cardiology outpatient clinics of 2 tertiary hospitals with an atrial fibrillation episode or a clinical process due to atrial fibrillation. RESULTS: A total of 533 patients were included (56.5% women; mean age, 70.5 ± 12.2 years), of whom 24.3% were younger than 65 years. Women had significantly more clinical problems and a higher stroke risk: CHADS2 (congestive heart failure, hypertension, age, diabetes, stroke [doubled]) (1.8 ± 1.2 vs 1.5 ± 1.1; P = .001) and CHA2DS2-VASc (congestive heart failure, hypertension, age ≥ 75 [doubled], diabetes, stroke [doubled]-vascular disease and sex category [female]) (3.7 ± 1.4 vs 2.2 ± 1.4; P = .0001). Referrals to the cardiology department were appropriate in 94% of the patients, the referral source was primary care or other hospital services in 53.8%, and echocardiography was performed or recommended in 93.4%. Treatment (antiarrhythmics and anticoagulants) was administered according to guideline recommendations. In the previous 3 months, the Rosendaal index was 48.4 ± 37.4. CONCLUSIONS: One in every 4 patients seeking care for problems associated with atrial fibrillation are young; women have more clinical problems and seek care more frequently than men. Patients are correctly referred to the cardiology department and most are not referred from the emergency department. Echocardiography and antiarrhythmic and anticoagulant therapy were provided according to the recommendations of clinical practice guidelines. Vitamin K antagonists for anticoagulation therapy are underused.

Cost-effectiveness Analysis Comparing Apixaban and Acenocoumarol in the Prevention of Stroke in Patients With Nonvalvular Atrial Fibrillation in Spain.

INTRODUCTION AND OBJECTIVES: Cost-effectiveness analysis of apixaban (5 mg twice daily) vs acenocoumarol (5mg/day) in the prevention of stroke in patients with nonvalvular atrial fibrillation in Spain. METHODS: Markov model covering the patient's entire lifespan with 10 health states. Data on the efficacy and safety of the drugs were provided by the ARISTOTLE trial. Warfarin and acenocoumarol were assumed to have therapeutic equivalence. PERSPECTIVES: The Spanish National Health System and society. Information on the cost of the drugs, complications, and the management of the disease was obtained from Spanish sources. RESULTS: In a cohort of 1000 patients with nonvalvular atrial fibrillation, administration of apixaban rather than acenocoumarol would avoid 18 strokes, 71 hemorrhages (28 intracranial or major), 2 myocardial infarctions, 1 systemic embolism, and 23 related deaths. Apixaban would prolong life (by 0.187 years) and result in more quality-adjusted life years (by 0.194 years) per patient. With apixaban, the incremental costs for the Spanish National Health System and for society would be € 2,488 and € 1,826 per patient, respectively. Consequently, the costs per life year gained would be € 13,305 and € 9,765 and the costs per quality-adjusted life year gained would be € 12,825 and € 9,412 for the Spanish National Health System and for society, respectively. The stability of the baseline case was confirmed by sensitivity analyses. CONCLUSIONS: According to this analysis, apixaban may be cost-effective in the prevention of stroke in patients with nonvalvular atrial fibrillation compared with acenocoumarol.

[Patients' characteristics and clinical management of atrial fibrillation in primary healthcare in Spain: FIATE Study]. / Características de los pacientes y abordaje terapéutico de la fibrilación auricular en atención primaria en España: Estudio FIATE.

BACKGROUND AND OBJECTIVES: The main therapeutic objective in atrial fibrillation (AF) patients is stroke prevention. This study is aimed to determine whether the anticoagulant therapy may be appropriate regarding to the Guidelines and patients' profile in primary healthcare in Spain. PATIENTS AND METHODS: A national, multicenter, cross-sectional study of AF patients attended in primary healthcare in Spain has been conducted. The study involved 185 family physicians whose patients were randomized. RESULTS: A total of 3,759 AF patients were randomized from the clinical records, and 2,070 were included in the study, at an average age of 74 (11) years old (50.7% female). Most of them (78%) had permanent AF and high comorbidity rates (hypertension 75%, obesity 30%, diabetes 27%, heart failure 20%, coronary heart disease 17%, and social risk 15%). Patients diagnosed in primary healthcare were more frequently asymptomatic than in hospital setting (36%; P<.001). The therapeutic strategy was based on the heart rate control in 4 out of 5 patients. Anticoagulation therapy was widely used (84%), more frequently in patients with permanent vs. non-permanent AF (91 vs. 60%, P<.001). Follow-up and monitoring was mainly performed in primary care (72%). The anticoagulation control was suboptimal, with a 66% of the international normalized ratio (INR) in therapeutic range, dropping to 33% when the last 3 available INR were included (P<.001). CONCLUSIONS: A high rate of patients with anticoagulant therapy in primary healthcare has been found in this research. INR control, however, remains suboptimal. Heart rate control is the most commonly used strategy. The decision about the anticoagulation should be based on the thromboembolic risk rather than in the arrhytmia type.

Cost of diagnosis and treatment of syncope in patients admitted to a cardiology unit.

AIMS: Despite the large number of hospital admissions due to syncope, information on the in-hospital cost of management of these patients remains incomplete. METHODS AND RESULTS: In order to assess such cost, we analysed the clinical histories of the patients suffering from syncope who were admitted to our Unit of Cardiology in 2003. We determined the length of stay (in days) for each inpatient, the number of diagnostic tests performed, and the various therapeutic procedures undertaken. Two hundred and three patients (mean age 68 +/- 14, 49% female) were admitted because of syncope. Final diagnoses on discharge were drug-induced syncope in 10 patients, vasovagal syncope in 11, syncope secondary to cardiac ischaemia in 18, valvular disease in 4, rapid supraventricular arrhythmia in 20, ventricular arrhythmia in 19, atrioventricular block in 90, and unexplained syncope in 31 patients. Of these 203 patients, 70 (34.5%) had a previous history of cardiac disease. The global cost for all 203 patients was 2,264,979 Euros. The overall cost per patient was 11,158 Euros (range: 1651-31,762) including stay, diagnosis, and treatment. The overall cost of hospital stay per patient was 3718 Euros (range: 1436-5679). The overall cost per diagnosis of the 203 patients was 1141 Euros (range: 155-3577), and the cost of the therapeutic procedures required was 6299 Euros (range: 0-23 115). The most expensive were those cases of syncope secondary to ventricular arrhythmia, the cost of which is 20 times that of drug-induced syncope. CONCLUSION: The cost per diagnosis and treatment of a patient admitted because of syncope varies widely with important differences depending on the specific cause.