Fig. 4

Transthoracic echocardiograph-based cardiac function assessment. Transthoracic echocardiography (TTE)-based cardiac function evaluation was performed at baseline (the first time for MI treatment); before the PARACHUTE device procedure; and at 1 week, 6 months, 1 year, 2 years, and 3 years after device implantation. a, c, and e Comparison of each time point for the left ventricular ejection fraction, left ventricular end-diastolic diameter, and estimated pulmonary artery pressure assessment, respectively. b, d, and f Changes in the TTE-based parameter measurement mentioned above. ***: P < 0.001, compared with baseline; ##: P < 0.01, compared with the PARACHUTE procedure; NS: not significant. mm: millimeter