Usefulness of Left Atrial Volume in Predicting First Congestive Heart Failure in Patients ≥65 Years of Age With Well-Preserved Left Ventricular Systolic Function

• Published in: The American journal of cardiology Vol. 96; no. 6; pp. 832 - 836
• Main Authors: Takemoto, Yasuhiko, Barnes, Marion E., Seward, James B., Lester, Steven J., Appleton, Christopher A., Gersh, Bernard J., Bailey, Kent R., Tsang, Teresa S.M.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 15-09-2005; Elsevier; Elsevier Limited
• Subjects: Aged; Aged, 80 and over; Atrial Function, Left; Biological and medical sciences; Blood pressure; Cardiology; Cardiology. Vascular system; Echocardiography; Female; Follow-Up Studies; Heart; Heart failure; Heart Failure - diagnostic imaging; Heart Failure - physiopathology; Heart failure, cardiogenic pulmonary edema, cardiac enlargement; Humans; Male; Medical sciences; Minnesota; Older people; Predictions; Predictive Value of Tests; Prognosis; Risk Factors; Ventricular Function, Left; Human; Heart failure; Heart disease; Cardiovascular disease; Circulatory system; Left atrium; Cardiology; Left ventricle performance; Heart volume; Phlebology; Age
• ISSN: 0002-9149; 1879-1913
• DOI: 10.1016/j.amjcard.2005.05.031

Left atrial (LA) volume is a barometer of diastolic dysfunction. Whether it predicts congestive heart failure (CHF) in patients with preserved left ventricular (LV) systolic function is not known. Olmsted County, Minnesota, residents aged ≥65 years referred for transthoracic echocardiography from 1990 to 1998, who were in sinus rhythm without a history of CHF were followed in the medical records to 2003 (mean follow-up duration 4.3 ± 2.7 years). Of the 1,495 patients identified, 1,375 (92%) with LV ejection fractions ≥50% (mean age 75 ± 7 years; 59% women) constituted the study population, 138 (10%) of whom developed CHF. Baseline LA volume ≥32 ml/m
2 was an independent predictor of first CHF (p <0.001). Of the 138 patients who had first CHF, ejection fractions were assessed within 4 weeks of diagnosis in 98 subjects, 74 (76%) of whom had ejection fractions remaining at ≥50%, with a mean increase in LA volume of 8 ± 10 ml/m
2 (p <0.001) from baseline. The age-adjusted CHF-free survival rates for LA volume tertiles (<28, 28 to ≤37, and >37 ml/m
2) were 95%, 91%, and 83%, respectively (p <0.001). In conclusion, LA volume independently predicted first CHF in an elderly cohort with well-preserved LV systolic function.