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Prognostic value of left ventricular myocardial work indices in patients with severe aortic stenosis undergoing transcatheter aortic valve replacement. 2023

Hoi W Wu, and Federico Fortuni, and Steele C Butcher, and Frank van der Kley, and Arend de Weger, and Victoria Delgado, and J Wouter Jukema, and Jeroen J Bax, and Nina Ajmone Marsan
Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, Leiden 2333ZA, The Netherlands.

Left ventricular myocardial work (LVMW) is a novel echocardiographic-based method to assess left ventricular (LV) function using pressure-strain loops taking into account LV afterload. The aim of this study was to evaluate the prognostic value of LVMW indices in patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve replacement (TAVR). LV global work index (LV GWI), LV global constructive work (LV GCW), LV global wasted work (LV GWW), and LV global work efficiency (LV GWE) were calculated in 281 patients with severe AS [age 82, interquartile range (IQR) 78-85 years, 52% male] before the TAVR procedure. LV systolic pressure was derived non-invasively by adding the mean aortic gradient to the brachial systolic pressure to adjust for afterload and calculate LVMW indices. Overall, the average LV GWI was 1872 ± 753 mmHg%, GCW 2240 ± 797 mmHg%, GWW 200 (IQR 127-306) mmHg%, and GWE 89 (IQR 84-93)%. During a median follow-up of 52 (IQR 41-67) months, 64 patients died. While LV GWI was independently associated with all-cause mortality (Hazard ratio per-tertile-increase 0.639; 95%CI 0.463-0.883; P = 0.007), LV GCW, GWW, and GWE were not. When added to a basal model, LV GWI yielded a higher increase in predictivity compared to the left ventricular ejection fraction as well as LV global longitudinal strain and LV GCW, and also across the different haemodynamic categories (including low-flow low-gradient) of AS. LV GWI is independently associated with all-cause mortality in patients undergoing TAVR and has a higher prognostic value compared to both conventional and advanced parameters of LV systolic function.

UI MeSH Term Description Entries
D008297 Male Males
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D001024 Aortic Valve Stenosis A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA. Aortic Stenosis,Aortic Valve Stenoses,Stenoses, Aortic,Stenoses, Aortic Valve,Stenosis, Aortic,Stenosis, Aortic Valve,Valve Stenoses, Aortic,Valve Stenosis, Aortic
D013318 Stroke Volume The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume. Ventricular Ejection Fraction,Ventricular End-Diastolic Volume,Ventricular End-Systolic Volume,Ejection Fraction, Ventricular,Ejection Fractions, Ventricular,End-Diastolic Volume, Ventricular,End-Diastolic Volumes, Ventricular,End-Systolic Volume, Ventricular,End-Systolic Volumes, Ventricular,Fraction, Ventricular Ejection,Fractions, Ventricular Ejection,Stroke Volumes,Ventricular Ejection Fractions,Ventricular End Diastolic Volume,Ventricular End Systolic Volume,Ventricular End-Diastolic Volumes,Ventricular End-Systolic Volumes,Volume, Stroke,Volume, Ventricular End-Diastolic,Volume, Ventricular End-Systolic,Volumes, Stroke,Volumes, Ventricular End-Diastolic,Volumes, Ventricular End-Systolic
D016277 Ventricular Function, Left The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance. Left Ventricular Function,Function, Left Ventricular,Functions, Left Ventricular,Left Ventricular Functions,Ventricular Functions, Left
D065467 Transcatheter Aortic Valve Replacement Surgical treatment for severe AORTIC VALVE STENOSIS. Transcatheter aortic valve replacement (TAVR) is used as an alternative option in patients who are deemed at high risk or inoperable for traditional open-heart surgery. Transcatheter Aortic Valve Implantation

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