Blood pressure control in anticoagulated patients with hypertension and atrial fibrillation.

OBJECTIVE: To determine the clinical profile and blood pressure (BP) control rates of anticoagulated patients with hypertension and atrial fibrillation (AF). METHODS: The PAULA study was a multicenter cross-sectional/retrospective observational study conducted throughout Spain. The study included patients with nonvalvular AF who were receiving vitamin K antagonist therapy during the past year and were attended at primary care setting. Adequate BP control was defined according to 2013 ESC/ESH guidelines. RESULTS: A total of 1,222 hypertensive patients were included (mean age 77.9 ± 8.3 years; 51.2% women; CHADS2 2.5 ± 1.1; CHA2DS2-VASc 4.2 ± 1.4; HAS-BLED 1.6 ± 0.9). 33.5% of patients had diabetes, 24.9% heart failure and 14.0% prior stroke/transient ischemic attack. Mean BP was 131.4 ± 14.5/74.9 ± 9.8 mm Hg. With regard to antihypertensive treatment, most of patients were on combined therapy (67.9%). The commonest prescribed antihypertensive drugs were diuretics (64.4%), followed by angiotensin receptor blockers (30.1%), and beta blockers (29.4%). 75.2% of hypertensive patients achieved BP control targets; 86.6% of patients ≥80 years and 67.6% of diabetics. CONCLUSIONS: More than 75% of hypertensive patients with AF achieved BP goals, and this rate was higher in elderly. More than 2 thirds of patients were on combined therapy. BP control appears to be better in AF patients than in general hypertensive population.

Evaluation of SAMe-TT2R2 score and other clinical factors influencing the quality of anticoagulation therapy in non-valvular atrial fibrillation: a nationwide study in Spain.

OBJECTIVE: To assess the major clinical factors affecting the quality of anticoagulation and evaluate the predictive value of the SAMe-TT2R2 score to identify patients who will achieve a high average time in therapeutic range (T.T.R.) with vitamin K antagonist (V.K.A.) treatment. RESEARCH DESIGN AND METHODS: This observational, cross-sectional, retrospective and nationwide multicenter study included 1524 patients from the primary care setting with non-valvular atrial fibrillation receiving V.K.A. (≥12 months). We performed a bivariate analysis to identify factors individually associated with the T.T.R. and a multiple regression analysis to identify the independent predictive factors. For the validation of the SAMe-TT2R2 score, the receiver operating characteristic (R.O.C.) curve was calculated and the Hosmer-Lemeshow test was used to test calibration. RESULTS: A total of 94.8% of patients received acenocumarol (4.8% warfarin). A progressive decrease in mean T.T.R. was found when the SAMe-TT2R2 score increased from 0 points (72.1 ± 17.1%) to 4 points (64.1 ± 23.2%), p < 0.001. Other risk scores (CHADS2 and CHA2DS2-VASc, HAS-BLED) were also associated with the mean T.T.R. We found a significant association between low T.T.R. and the following clinical factors: female sex, three or more comorbidities, amiodarone treatment, dietary habits, bleeding history and the intake of ≥7 tablets per day besides V.K.A. (p < 0.01). Regarding SAMe-TT2R2 score validation, the R.O.C. curve showed significant capability, although not high, of discriminating good anticoagulation control (T.T.R. ≥65%) with an area under the curve of 0.562 (95% C.I. 0.533-0.592, p < 0.001) which increased, remaining modest, to 0.594 (95% C.I. 0.564-0.624, p < 0.001) when the factors not included in SAMe-TT2R2 score were added. CONCLUSION: In this cohort, the SAMe-TT2R2 score had a significant, although modest, ability to assess the likelihood of good international normalized ration (I.N.R.) control, and its predictive value might slightly improve by adding other simple clinical factors. Further research is needed to refine the predictive scales.