Moisés Rodríguez-Mañero1, Estrella López-Pardo2, Alberto Cordero3, Omar Kredieh4, María Pereira-Vazquez5, Jose-Luis Martínez-Sande5, Alvaro Martínez-Gomez5, Carlos Peña-Gil5, José Novo-Platas2, Javier García-Seara5, Pilar Mazón5, Ricardo Laje5, Isabel Moscoso5, Alfonso Varela-Román5, Jose María García-Acuña5, José Ramón González-Juanatey5. 1. Cardiology Department, Complejo Hospital Universitario de Santiago, Santiago de Compostela, IDIS (Instituto para el Desarrollo e Integración de la Salud), CIBERCV (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares), Santiago de Compostela, Spain. Electronic address: moirmanero@gmail.com. 2. Xerencia de Xestión Integrada, Hospital Universitario Santiago de Compostela, Santiago de Compostela, Spain. 3. Hospital Universitario San Juan de Alicante, Spain. 4. University of Miami/JFK Medical Center Palm Beach Regional GME Consortium, Atlantis, FL, United States. 5. Cardiology Department, Complejo Hospital Universitario de Santiago, Santiago de Compostela, IDIS (Instituto para el Desarrollo e Integración de la Salud), CIBERCV (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares), Santiago de Compostela, Spain.
Abstract
BACKGROUND: Age increases risk of stroke and bleeding. Clinical trial data have had relatively low proportions of elderly subjects. We sought to study a Spanish population of octogenarians with atrial fibrillation (AF) by combining different sources of electronic clinical records from an area where all medical centres utilized electronic health record systems. METHODS: Data was derived from the Galician Healthcare Service information system. RESULTS: From 383,000 subjects, AF was coded in 7990 (2.08%), 3640 (45.6%) of whom were ≥80 and 4350 (54.4%)<80. All CHA2DS2-VASc's components were more prevalent in the elderly except for diabetes. Of those ≥80, 2178 (59.8%) were women. Mean CHA2DS2-VASc was 4.2±1.1. Distribution of CHA2DS2-VASc components varied between genders. 2600 (71.4%) were on oral anticoagulant (OA). During a median follow up of 696days (124.23), all-cause mortality was higher in ≥80 (1011/3640 (27.8%) vs 350/4350 (8.05%) (p<0.001). There were differences in rate of thromboembolic (TE) and haemorrhagic events (2.3% vs 0.9%, p<0.01 and 2.5% vs 1.7%, p=0.01 respectively). In octogenarian, differences between genders were observed with regard to TE, but not in haemorrhagic or all-cause mortality rates. Age, heart failure, non-valvular AF, dementia, and OA were independent predictors of all-cause mortality. In regard to TE, female gender, hypertension, previous TE and OA were independent predictive factors. CONCLUSIONS: Octogenarians with AF had very different characteristics and outcomes from their younger counterparts. These results also provide reassurance about the effectiveness of OA in preventing TE events and maintaining a reasonable haemorrhagic event rate in the extremely elderly.
BACKGROUND: Age increases risk of stroke and bleeding. Clinical trial data have had relatively low proportions of elderly subjects. We sought to study a Spanish population of octogenarians with atrial fibrillation (AF) by combining different sources of electronic clinical records from an area where all medical centres utilized electronic health record systems. METHODS: Data was derived from the Galician Healthcare Service information system. RESULTS: From 383,000 subjects, AF was coded in 7990 (2.08%), 3640 (45.6%) of whom were ≥80 and 4350 (54.4%)<80. All CHA2DS2-VASc's components were more prevalent in the elderly except for diabetes. Of those ≥80, 2178 (59.8%) were women. Mean CHA2DS2-VASc was 4.2±1.1. Distribution of CHA2DS2-VASc components varied between genders. 2600 (71.4%) were on oral anticoagulant (OA). During a median follow up of 696days (124.23), all-cause mortality was higher in ≥80 (1011/3640 (27.8%) vs 350/4350 (8.05%) (p<0.001). There were differences in rate of thromboembolic (TE) and haemorrhagic events (2.3% vs 0.9%, p<0.01 and 2.5% vs 1.7%, p=0.01 respectively). In octogenarian, differences between genders were observed with regard to TE, but not in haemorrhagic or all-cause mortality rates. Age, heart failure, non-valvular AF, dementia, and OA were independent predictors of all-cause mortality. In regard to TE, female gender, hypertension, previous TE and OA were independent predictive factors. CONCLUSIONS: Octogenarians with AF had very different characteristics and outcomes from their younger counterparts. These results also provide reassurance about the effectiveness of OA in preventing TE events and maintaining a reasonable haemorrhagic event rate in the extremely elderly.