The effect of significant weight loss after bariatric surgery on echocardiographic indices: an observational study focusing on left ventricular deformation by 2D speckle echocardiography and right ventricular size

Safari, Saeed; Parsaee, Mozhgan; Moradi, Mohammad; Hakiminejad, Mahdi; Koohsari, Parisa; Larti, Farnoosh

doi:10.1186/s43044-024-00474-6

The Egyptian Heart Journal

Table 2 A summary of study variable changes during the study period

From: The effect of significant weight loss after bariatric surgery on echocardiographic indices: an observational study focusing on left ventricular deformation by 2D speckle echocardiography and right ventricular size

Echocardiographic parameters	Baseline	3 months after the surgery	6 months after the surgery	Cohen’s d Baseline vs 6 months after surgery	P value
GLS (%)^a	17.42 ± 2.94	18.24 ± 3.09	19.52 ± 2.79	0.73	0.001^* (0 → 6)
Longitudinal strain in AP4ch^b view (%)	18.41 ± 2.68	19.13 ± 2.54	20.98 ± 2.93	0.92	0.000^Ω (0 → 6 and 3 → 6)
Longitudinal strain in AP2ch^c view (%)	17.81 ± 3.21	18.75 ± 3.44	19.11 ± 2.72	0.44	0.053
Longitudinal strain in AP3ch^d view (%)	16.46 ± 3.89	17.86 ± 3.47	18.27 ± 3.40	0.50	0.021^* (0 → 6)
Mechanical dispersion of longitudinal strain (msec)	34.42 ± 17.84	30.55 ± 19.23	27.92 ± 23.08	− 0.32	0.117
GCS (%)^e	20.14 ± 4.22	23.32 ± 4.66	24.53 ± 4.52	1.00	0.000^# (0 → 3 and 0 → 6)
Basal LV circumferential strain (%)	17.73 ± 4.52	20.19 ± 4.04	22.55 ± 5.51	0.96	0.000^Δ (0 → 3, 0 → 6 and 3 → 6)
Mid-LV circumferential strain (%)	20.11 ± 4.89	22.30 ± 5.74	24.41 ± 6.40	0.76	0.000^* (0 → 6)
Apical LV circumferential strain (%)	22.73 ± 6.15	26.71 ± 7.14	28.31 ± 7.85	0.79	0.000^# (0 → 3 and 0 → 6)
Mechanical dispersion of circumferential strain (msec)	38.05 ± 23.81	31.28 ± 22.92	25.37 ± 20.86	− 0.57	0.006^* (0 → 6)
RVOT PLAX (cm)^f	3.56 ± 0.43	3.45 ± 0.41	3.42 ± 0.52	− 0.29	0.011^# (0 → 3 and 0 → 6)
Basal RVD (cm)^g	3.16 ± 0.27	3.08 ± 0.30	3.03 ± 0.32	− 0.44	0.000^# (0 → 3 and 0 → 6)
Mid-RVD (cm)	3.31 ± 0.38	3.20 ± 0.32	3.14 ± 0.41	− 0.43	0.007* (0 → 6)
Long RVD (cm)	8.10 ± 0.54	7.95 ± 0.58	7.72 ± 0.61	− 0.66	0.001^Ω (0 → 6 and 3 → 6)
LVEF (%)^h	58.45 ± 7.84	59.45 ± 6.93	60.96 ± 6.45	0.35	0.132
LVEDV (mL)ⁱ	103.7 ± 27.6	98.7 ± 28.9	95.4 ± 29.0	− 0.29	0.110
LVESV (mL)^j	43.82 ± 16.63	40.70 ± 17.36	37.43 ± 14.19	− 0.41	0.037^* (0 → 6)

^aGLS: global longitudinal strain; ^bAP4ch: apical four-chamber view; ^cAP2ch: apical two chamber; ^dAP3ch: apical three chamber; ^eGCS: global circumferential strain; ^fRVOT PLAX: proximal right ventricular outflow tract diameter in parasternal view; ^gRVD: right ventricular diameter; ^hLVEF: left ventricular ejection fraction, ⁱLVEDV: left ventricular end-diastolic volume; ^jLVESV: left ventricular end-systolic volume
^*Statistically significant changes from baseline to six months after the surgery (0 → 6)
^#Statistically significant changes from baseline to three months and six months (0 → 3 and 0 → 6) with no statistically significant change from three months to six months after the surgery (no change in 3 → 6)
^ΩStatistically significant changes from baseline to six months and from three months to six months (0 → 6 and 3 → 6), with no statistically significant change from baseline to three months after the surgery (no change in 0 → 3)
^ΔStatistically significant changes from baseline to three months, baseline to six months, and three months to six months after the surgery (0 → 3, 0 → 6 , and 3 → 6)

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