Correlation of Left Atrial Strain with Invasively Measured Left Ventricular End-diastolic Pressure; Determining LA Strain Cut-off Value

Overview

Journal Int J Cardiovasc Imaging

Publisher Springer

Specialty Radiology

Date 2024 Jul 29

PMID 39073553

Authors

Mehrnoush Toufan

Naser Khezerlouy-Aghdam

Hanieh Sakha

Ahmad Separham

Sanaz Pakdel

Morad Shahverdi

Mohammadreza Taban Sadeghi

Sanaz Mousavi

Naser Aslanabadi

Affiliations

Soon will be listed here.

Abstract

Left atrium longitudinal strain (LAS) with speckle tracking method has been proposed as a non-invasive method for the assessment of left ventricular filling pressure and diastolic dysfunction. This study aimed to investigate left atrial strain compared to invasively measured left ventricular filling pressure. All Patients candidates for coronary angiography were consecutively recruited. LAS measured by transthoracic echocardiography. Left ventricular end-diastolic pressure (LVEDP) pressure was invasively measured. Current echocardiographic modalities for diastolic function evaluated. A total of 125 people were included. 45 patients had preserved ejection fraction (EF ≥ 50%) and 85 patients had reduced EF (EF < 50%) and compared two groups. LVEDP was significantly higher in reduced EF compared to preserved EF (p-value < 0.001). LA-reservoir and LA-booster strains were significantly lower in patients with reduced EF compared to preserved EF (p-value = 0.008, mean Reservoir = 16.4% ± 6.4, mean Reservoir = 19.5% ± 5.6, respectively) and (p-value = 0.009, mean Booster = 9.09% ± 4.0, mean Booster =11. 9% ± 4.3, respectively). LA 4ch-reservoir strain <14.4%, and LA 2ch-reservoir strain <14.1% were related to LVEDP≥20 mmHg (sensitivity 63.5% and specificity 75%) (sensitivity 77.9% and specificity of 60%) respectively. LAS is significantly lower in patients with elevated LVEDP (≥ 20mmHg). LAS is significantly lower in patients with reduced EF. Both LA-reservoir and LA-booster strains have a significant relation to predicting LVFP but LA-reservoir strain is more accurate. The mean LA-reservoir strain less than 12.4% is associated with LVEDP ≥ 20mmHg.

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