Automated left atrial strain analysis for predicting atrial fibrillation in severe COVID-19 pneumonia: a prospective study

Beyls, Christophe; Hermida, Alexis; Bohbot, Yohann; Martin, Nicolas; Viart, Christophe; Boisgard, Solenne; Daumin, Camille; Huette, Pierre; Dupont, Hervé; Abou-Arab, Osama; Mahjoub, Yazine

doi:10.1186/s13613-021-00955-w

Annals of Intensive Care

Table 3 Echocardiographic data

From: Automated left atrial strain analysis for predicting atrial fibrillation in severe COVID-19 pneumonia: a prospective study

Overall population (n = 79)	No AF (n = 63)	AF (n = 16)	P value
LV systolic parameters
LVEF (%)	61 [51–69]	66 [53–70]	0.37
LV end diastolic volume (ml)	109 [74–129]	109 [90–156]	0.50
LV end systolic volume (ml)	43 [26–58]	38 [24–65]	0.85
Stroke volume index (ml/m²)	33 [26–39]	27 [24–35]	0.12
Cardiac index (l/min/m²)	2.49 [1.98–3.23]	2.15 [1.78–3.01]	0.24
LV diastolic functional parameters
E wave (cm s⁻¹)	84 [69–92]	77 [65–98]	0.60
A wave (cm s⁻¹)	83 [68–105]	74 [61–100]	0.63
E/A ratio	0.9 [0.74–1.2]	0.8 [0.7–1.2]	0.74
Lateral E/e’	8.5 [6.3–10.4]	9.7 [7.4–12.0]	0.24
E wave deceleration time (ms)	250 [180–309]	254[190–304]	0.93
LA volume (ml)	49 [39–58]	56 [32–67]	0.52
LA volume index (ml/m²)	23 [18–27]	28 [16–38]	0.19
RV Parameters
RV basal dimension (mm)	46 [40–51]	43 [41–50]	0.72
RV mid-cavity dimension (mm)	34 [29.40]	32 [26–39]	0.38
RV longitudinal dimension (mm)	77 [71–82]	74 [71–78]	0.42
RV EDA (cm²)	20 [15–25]	18 [16–21]	0.37
RV ESA (cm²)	11 [7–15]	9 [8–11]	0.18
RA volume indexed to BSA (ml/m²)	21 [14–25]	19 [15–25]	0.95
RV systolic function parameters
TAPSE (mm)	24.2 [21.0–28]	21.5 [18.2–24.1]	0.6
RV- S’ (cm/s-1)	16.0 [13.4–19.4]	18.0 [16.3–20.0]	0.43
RV FAC (%)	47 [38–53]	49 [46–53]	0.23
Pericardial effusion (> 10 mm)	3 (5)	2 (12)	0.26
Valvular heart disease	2 (3)†	1 (6)*	0.10
LA strain parameters
LASr (%)	30.5 [23.8–36.2]	20.2 [12.3–27.3]	0.002
LAScd (%)	− 17.2 [(− 5.0)–(− 10.2)]	− 8.1 [(− 6.3)–(− 10.9)]	< 0.001
LASct (%)	− 13.3 [(− 7.7)–(− 16.9)]	− 9.7 [(− 5.2)–(− 16.1)]	0.31

Bold indicates P < 0.05
CO cardiac output, EDA end diastolic area, ESA end systolic area, FAC fractional area change, LA left atrial, LAScd left atrial strain during conduit phase, LASct left atrial strain during contraction phase, LASr left atrial strain during reservoir phase, LV left ventricle, LVEF left ventricular ejection fraction, RA right atrium, RV right ventricle, TAPSE tricuspid annular plane systolic excursion
*one moderate mitral regurgitation by prolapse
†one severe mitral regurgitation and one moderate aortic regurgitation

Back to article page