Background
death, Sepsis, critically ill, tachyarrhythmia, Tachyarrhythmia
SEPSIS, CRITICALLY ILL
Sepsis is considered the main cause of death in critically ill patients worldwide [Tachyarrhythmia can impair ventricular filling and increase myocardial oxygen consumption, making the use of β -blockers for correcting tachyarrhythmia a treatment option for SIC. Currently, the use of β-blockers in the treatment of SIC patients is still controversial [The diagnosis of SIC is still limited to the left ventricular ejection fraction (LVEF) obtained by transthoracic echocardiography (TTE) [The hypothesis was proposed that Esmolol can effectively reduce heart rate in SIC patients without damaging myocardial contractility and worsening hemodynamics. The purpose of this study was to evaluate myocardial contractility with STE after the heart rate was reduced to the target value with the application of Esmolol, with its effect on 28-day and 90-day mortality recorded.