“…Sepsis,a severe, potentially fatal, organic dysfunction caused by infections or suspected infections,which has the characteristics of severe disease, rapid progression and low cure rate.Sepsis remains a major cause of morbidity and mortality worldwide, with increased burden in low-and middle-resource settings.The manifestations are various, such as fever, chills, palpitation, shortness of breath, shock,and mental symptoms,and so on.Sepsis can develop into SS [1][2] .As we all know, the application of antibiotics plays a crucial role in the treatment of sepsis.Current guidelines suggest that antibiotics administered within 1 hour of diagnosis can signi cantly improve patient outcomes [3] .According to a 2006 study of 2,731 adults with pyaemia showed that each 1h delay in antibiotic using resulted in a 7.6% increase in mortality.However,Taylor SP [4] et al found that there was no signi cant difference in the mortality of sepsis patients with a recognition delay of less than 6 hours or a drug administration delay of less than 1.5 hours through their study.Therefore, this study investigated the effect of rst-dose antibiotic delay intervals on the clinical e cacy of sepsis patients attending the emergency department. Methods 1.1Patient selection:A total of 452 patients with sepsis were retrospectively selected, which including 257 males and 195 females, from 2020.01 to 2022.12 in our hospital.We chose two diagnostic criteria for sepsis:digital signature of infection or suspected infection;digital signature of Sequential Organ Failure Assessmen,(SOFA), rises ≥ 2 points above the baseline.We de ned SS as persistent hypotension on the basis of sepsis,which need to maintain mean arterial pressure ≥ 8.67kPa or blood lactic acid ≥ 2 mmol/L on the basis of adequate blood volume supplementation with pressure raising drug.We de ned infected patients as those who were prescribed antibiotics within 12 hours of emergency triage and ordered to be used for blood or urine cultures and CRP, PCT, ,blood cells increased [5][6] .The primary outcome we considered in patients with sepsis was the in-hospital fatality rate.Exclusion criteria: Patients who do not meet the diagnosis of sepsis; Patients who with incomplete clinical data.…”