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Estimating Left Ventricular Filling Pressure by Echocardiography
Oyvind S Andersen1, Otto A Smiseth1, Hisham Dokainish2
1Oslo University Hospital, Rikshospitalet, Center for Cardiological Innovation and University of Oslo, Oslo, Norway.
Journal of the American College of Cardiology
|April 15, 2017
Summary
Echocardiography accurately identifies elevated left ventricular (LV) filling pressure, a key heart failure indicator. Combining echocardiography with clinical data improves diagnostic accuracy, aiding clinicians in managing heart failure patients.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Heart Failure Research
Background:
- Diagnosing heart failure is challenging due to nonspecific symptoms.
- Elevated left ventricular (LV) filling pressure confirms heart failure but cardiac catheterization is often impractical.
- Echocardiographic indexes serve as non-invasive markers for filling pressure.
Purpose of the Study:
- To assess the feasibility and accuracy of comprehensive echocardiography in identifying patients with elevated LV filling pressure.
- To compare echocardiographic accuracy against clinical assessment and invasive measurements.
Main Methods:
- A multicenter study involving 450 patients with diverse cardiac conditions undergoing cardiac catheterization.
- Utilized left atrial volume index, flow velocities, and tissue Doppler to estimate LV filling pressure.
- Employed invasive pressure measurements as the gold standard for validation.
Main Results:
- Echocardiography achieved 87% accuracy in identifying elevated LV filling pressure, significantly outperforming clinical assessment (72%).
- The combination of clinical and echocardiographic data provided incremental diagnostic value, with a net reclassification improvement of 1.5.
- Elevated LV filling pressure was present in 58% of patients, with a mean LVEF of 47%.
Conclusions:
- Comprehensive echocardiography is a feasible and accurate method for assessing LV filling pressure.
- Integrating echocardiographic findings with clinical data enhances diagnostic accuracy for heart failure, irrespective of LVEF.
- Echocardiography offers a practical alternative to invasive methods for evaluating filling pressures.