Introduction: Since December 2019, emergency services and Emergency Medical Service (EMS) systems have been at the forefront of the fight against the coronavirus disease 2019 (COVID-19) pandemic world-wide. Objective: The objective of this study was to examine the reasons and the necessity of transportation to the emergency department (ED) by ambulance and the outcomes of these cases with the admissions during the COVID-19 pandemic period and during the same period in 2019. Methods: A retrospective descriptive study was conducted in which patients transported to the ED by ambulance in April 2019 and April 2020 were compared. The primary outcomes were the changes in the number and diagnoses of patients who were transferred to the ED by ambulance during the COVID-19 period. The secondary outcome was the need for patients to be transferred to the hospital by ambulance. Results: A total of 4,466 patients were included in the study. During the COVID-19 period, there was a 41.6% decrease in ED visits and a 31.5% decrease in ambulance calls. The number of critically ill patients transported by ambulance (with diagnoses such as decompensated heart failure [P <.001], chronic obstructive pulmonary disease [COPD] attack (P = .001), renal failure [acute-chronic; P = .008], angina pectoris [P <.001], and syncope [P <.001]) decreased statistically significantly in 2020. Despite this decrease in critical patient calls, non-emergency patient calls continued and 52.2% of the patients transported by ambulance in 2020 were discharged from the ED. Conclusions: Understanding how the COVID-19 pandemic is affecting EMS use is important for evaluating the current state of emergency health care and planning to manage possible future outbreaks.

ObjectiveThe aim of the study is to compare the prognostic power of the BUN/albumin ratio (BAR) calculated on admission to the emergency department and the SYNergy between Percutaneous Coronary Intervention with TAXus (SYNTAX) score calculated after coronary angiography (CAG) in predicting 30-day mortality in patients with ST-segment elevation myocardial infarction (STEMI).Method and MaterialThe study was conducted prospectively between March 2021 and March 2022 in the emergency department of a tertiary hospital. Patients over the age of 18 who underwent CAG with a diagnosis of STEMI were included in the study. Demographic charecteristics, comorbidities, laboratory parameters of the patients at the time of admission and SYNTAX (SX) score were recorded in the data form.ResultsA total of 1147 patients (77% male) diagnosed with STEMI were included in the study. When the receiver-operating characteristic analysis for SX score and laboratory parameters’ power to predict mortality was examined, it was found that the AUC value of the BAR level (AUC: 0.736; 95% confidence interval: 0.670–0.802, P < 0.001) was the highest. If the threshold value of the serum BAR level, which was determined to predict mortality, was taken as 4, the sensitivity was found to be 76.7% and the specificity was 56.9%. With multivariate logistic analysis, it was determined that the risk of mortality increased by 1.25 for each unit increase in the BAR value in STEMI patients (P < 0.001).ConclusionAccording to the study data, the BAR may guide the clinician in the early period as a practical and valuable predictor of 30-day mortality in patients diagnosed with STEMI.