Dynamics of the Third Wave of COVID-19 from the Perspective of the Emergency Department in a Large Regional Hospital—Single Center Observational Study

Background: The outbreak of the Coronavirus Disease 2019 (COVID-19) pandemic has caused many significant social and economic changes. The consecutive waves of the epidemic in various countries have had dissimilar courses depending on the methods used to combat it. The aim of this study was to determine the dynamics of the third wave of COVID-19 from the perspective of emergency departments (ED). Methods: This was a retrospective review of medical records from ED. The authors have identified the most frequent symptoms. Prognostic factors have been chosen—prognostic scales, length of stay (LOS)—and a number of resources required have been calculated. Results: As the time passed, there were fewer patients and they presented mild symptoms. A statistically significant difference was observed in the median of blood oxygenation measurement (p = 0.00009), CRP level (p = 0.0016), and admission rate. Patients admitted to the hospital required more resources at ED. LOS was shorter in patients discharged home (p < 0.0001). Conclusions: The blood oxygen saturation (SPO2) and CPR levels can be helpful in decision-making regarding medical treatment. The fast-track for patients in good clinical condition may shorten the duration of stay in ED, and reduce the number of required resources.

Association of COVID-19 with Hepatic Injury Prevalence and Associated Factors

Background: Novel Coronavirus Disease 19 (COVID-19) was reported by the WHO as a pandemic in March 2020. It was associated with liver injury in up to 50% of patients. This retrospective cohort study investigated the prevalence and associated factors of liver injury among COVID-19 patients. Methods: We include 2319 consecutive COVID-19 patients from April 2020 to November 2020. Liver function tests were performed at baseline, 24–48 h after admission, and before mortality/discharge. We compared Saudis and non-Saudis, in admission rate, serum ALT level, morbidity, and mortality. Serum ALT was compared between sexes, admitted and non-admitted patients, and the deceased and survivors. Results: Men (1356; 58.5%) and non-Saudis (1328; 57.3%) were predominant. The mean (SD) age was 41.67 ± 18.3 years (18 - 100). One-third of the patients had comorbidities, and 1022 (44.1%) required hospital admission. Intensive Care Unit (ICU) transfer was required in 185/1022 (18%). Male and non-Saudis were most likely to be transferred to the ICU (P < 0.001). Hepatocellular liver injury was found in 797 (34.4%) patients. Male and admitted patients were more likely to have a hepatic injury (P = 0.001). Conclusions: The mortality rate among admitted patients was 17.8% (182/1022). Mortality was associated with older age and hepatic injury (P < 0.001 and P = 0.004, respectively).

The Effect of the COVID-19 Pandemic on the Pediatric Emergency Department Flow

ABSTRACT Objective: To determine how the early stages of the COVID-19 pandemic affected the utilization of the Pediatric Emergency Department (PED). Methods: Cross-sectional study of PED visits during January through April, 2016-2020. Data included: total PED visits, emergency severity index (ESI), disposition, chief complaint, age (months), time from first Provider to Disposition (PTD), and PED length of stay (PED-LOS). P-value <0.01 was statistically significant. Results: In total, 67,499 visits were reported. There was a significant decrease in PED visits of 24-71% from March to April 2020. Chief complaints for fever and cough were highest in March 2020; while April 2020 had a shorter mean PED-LOS (from 158 to 123 minutes), an increase of admissions (from 8% to 14%), a decrease in ESI 4 (10%), and an increase in ESI 3 (8%) (p<0.001). There was no difference in mean monthly PTD time. Conclusions: Patient flow in the PED was negatively affected by a decrease in PED visits and increase in admission rate that may be related to higher acuity. By understanding the interaction between hospital processes on PEDs and patient factors during a pandemic, we are able to anticipate and better allocate future resources.

Biphasic pattern in the effect of severe measles infection; the difference between additive and multiplicative scale

Background Infection with measles virus (MeV) causes immunosuppression and increased susceptibility to other infectious diseases. Only few studies reported a duration of immunosuppression, with varying results. We investigated the effect of immunosuppression on the incidence of hospital admissions for infectious diseases in Vietnamese children. Methods We used retrospective data (2005 to 2015; N = 4419) from the two pediatric hospitals in Ho Chi Minh City, Vietnam. We compared the age-specific incidence of hospital admission for infectious diseases before and after hospitalization for measles. We fitted a Poisson regression model that included gender, current age, and time since measles to obtain a multiplicative effect measure. Estimates were transformed to the additive scale. Results We observed two phases in the incidence of hospital admission after measles. The first phase started with a fourfold increased rate of admissions during the first month after measles, dropping to a level quite comparable to children of the same age before measles. In the second phase, lasting until at least 6 years after measles, the admission rate decreased further, with values up to 20 times lower than in children of the same age before measles. However, on the additive scale the effect size in the second phase was much smaller than in the first phase. Conclusion The first phase highlights the public health benefits of measles vaccination by preventing measles and immune amnesia. The beneficial second phase is interesting, but its strength strongly depends on the scale. It suggests a complicated interaction between MeV infection and the host immunity.

Prediction across healthcare settings: a case study in predicting emergency department disposition

Several approaches exist today for developing predictive models across multiple clinical sites, yet there is a lack of comparative data on their performance, especially within the context of EHR-based prediction models. We set out to provide a framework for prediction across healthcare settings. As a case study, we examined an ED disposition prediction model across three geographically and demographically diverse sites. We conducted a 1-year retrospective study, including all visits in which the outcome was either discharge-to-home or hospitalization. Four modeling approaches were compared: a ready-made model trained at one site and validated at other sites, a centralized uniform model incorporating data from all sites, multiple site-specific models, and a hybrid approach of a ready-made model re-calibrated using site-specific data. Predictions were performed using XGBoost. The study included 288,962 visits with an overall admission rate of 16.8% (7.9–26.9%). Some risk factors for admission were prominent across all sites (e.g., high-acuity triage emergency severity index score, high prior admissions rate), while others were prominent at only some sites (multiple lab tests ordered at the pediatric sites, early use of ECG at the adult site). The XGBoost model achieved its best performance using the uniform and site-specific approaches (AUC = 0.9–0.93), followed by the calibrated-model approach (AUC = 0.87–0.92), and the ready-made approach (AUC = 0.62–0.85). Our results show that site-specific customization is a key driver of predictive model performance.

Effect of the COVID-19 pandemic on complications and mortality of patients with cardiac surgery

Objectives The purpose of this study was to assess changes in cardiovascular disease severity, types, postoperative complications and prognosis during the COVID-19 pandemic and to explore possible influencing factors. Methods A total of 422 patients were enrolled in this study, and hospitalization and short-term follow-up data were retained. The patient population included 273 men and 149 women. Patients had a median (IQR) age of 54 (45–62) years and were divided into an observation group (130) and a control group (292), primarily according to severity of disease, disease types, baseline indexes, biochemical indexes, cardiac function indexes, complications and prognosis. Results During the COVID-19 pandemic, compared with the same period last year, there was a significant increase in patients with aortic dissection (27.69% vs 5.82%), a significant decrease in patients with valvular heart disease (43.08% vs 66.78%), and significantly increased emergency admission (50.00% vs 21.23%) and severity (54.62% vs 27.40%). Family company (76.37% vs 64.62%) was decreased, EuroSCORE [6.5 (2–9) vs 2 (0–5)] score, Pro-BNP [857.50 (241.00–2222.50) vs 542.40 (113.45–1776.75)] ng/L, six months mortality rate (18.46% vs 8.90%), and postoperative complications, including infected patients, atelectasis, pulmonary edema, and so on were increased, with longer length of stay in the ICU and hospital in COVID-19 pandemic. Survival analysis curve further demonstrated that it had an impact on the deaths of patients during the COVID-19 pandemic period. Through ROC analysis of the death factors of patients, it was concluded that Family company affected the death of patients, and the area under the curve was 0.654 (P < 0.05). Conclusions In this study, we found that the admission rate of critically ill patients with cardiovascular disease, complications of cardiac surgery, and short-term mortality of patients all exhibited a short-term increase, family company may be a risk factors for short-term mortality, that may be related to public pressure caused by the COVID-19 pandemic.

P-EGS01 Cholecystectomy after gall stone pancreatitis

Background According to the UK guidelines for the management of acute pancreatitis commissioned by the British Society of Gastroenterology, All patients presenting with gallstone pancreatitis should be considered for cholecystectomy when they are well enough to undergo surgery. In cases of mild biliary pancreatitis, cholecystectomy should ideally be performed during the index admission or within 2 weeks of discharge as interval cholecystectomy is associated with a significant risk of readmission for recurrent biliary events. In cases of severe gallstone pancreatitis, cholecystectomy may need to be delayed until collections have improved, unless the patient is well enough for surgery and the gallbladder is some distance from the collection Methods Methods Inclusion Criteria Exclusion Criteria Results 80 patients were collected during the study period, 96 % of them were classified as mild pancreatitis Cholecystectomy rate Total percentage of cholecystectomies performed for mild gall stone pancreatitis during index admission or within 2 weeks from discharge : 37% Percentage of early cholecystectomies for eligible patients (i.e.after ruling out unfit patients, patients declining treatment, previous cholecystectomy..etc) : 54% Re-admission rate Re-admission rate for early cholecystectomy patients : 7.4% Re-admission rate for delayed cholecystectomy patients : 20.7% Conclusions

Effect of COVID-19 on Kawasaki Disease: Decrease Age of Onset and Increase Skin Manifestation

Background Kawasaki Disease (KD) is the most common childhood vasculitis and cause of acquired heart disease for no apparent reason. There is some evidence indicating infectious agents as possible triggers for KD. During the COVID-19 pandemic, vasculitis has been a presentation of COVID-19 in children. We performed this study to assess the association between KD and COVID-19. We evaluated KD hospitalized children during February to September 2020 for COVID-19 (group one) and compared their demographic, clinical, laboratory, and echocardiographic findings with KD patients from the same period time in 2019 (group two). We also compared the same data in COVID-19 positive and COVID-19 negative KD patients in 2020 pandemic period in Shiraz Namazi referral hospital at southwest of Iran. Results Thirty-two patients in group one compared with 44 patients in group two. Sixty-eight percent of group one KD patients were positive for COVID-19 during the pandemic period. KD Age of onset in the group one was lower than group two (4.38 years VS 5.5 years, P-value = 0.044). There was no difference in the demographic, clinical, laboratory, and echocardiographic features of the patients during and before the COVID-19 pandemic (p-value > 0.05). Moreover, Comparing COVID-19 positive and negative the incidence of rash was higher within COVID-19 positive cases (p < 0.05), and coronary artery abnormalities were more prevalent in COVID-19 negative cases (p < 0.05). Conclusion Admission rate of KD was almost similar during the COVID-19 pandemic but 68% of KD admitted patient were COVID-19 positive. Age of onset for KD during the COVID-19 pandemic was lower and skin manifestation was higher than the same period time in last year.

OP339 Virtual COVID Ward: The Use Of Telehealth In The Emergency Response To COVID-19

IntroductionWith unprecedented times, comes accelerated change. Hospitals in our region have begun to facilitate safe discharge for COVID-19 patients in the form of “The virtual COVID ward”. This has enabled patients to be monitored safely in the community using pulse oximetry, Florence (a telehealth mobile app) and remote consultations. Our objective is to expand upon this model by providing home oxygen therapy for these patients facilitated by telemedicine.MethodsPatients were discharged with an oxygen concentrator if they had an oxygen requirement equal to or less than four litres/minute. Fraction of inspired oxygen needed to be stable and an early warning score of less than four was also required. Once admitted, the Florence app and daily remote consultations were crucial to closely monitor the patient's clinical status. The patient was instructed to enter oxygen saturations and heart rate into the app four times daily. The app would then alert our team if any patients observations deteriorate, triggering immediate assessment.ResultsWe have discharged ninety patients to the virtual ward, fifty-six of these with home oxygen. The average age was fifty-seven and the Clinical Frailty Score ranged between one and six. At present, ten patients have been re-admitted, four with increasing oxygen requirements, and six with unrelated symptoms. Two patients had oxygen concentrators installed at home after we were alerted to their desaturation by the Florence App. The re-admission rate is eleven percent, which mirrors that of other virtual wards (who do not provide home oxygen). In total, the ward has saved the trust 627 hospital inpatient ‘days’. Patients report increased satisfaction at playing a meaningful role in monitoring their own healthcare using the app.ConclusionsOur novel model of supported discharge with oxygen therapy using telehealth demonstrates that it is possible to manage such patients, safely, in the community. Other trusts could utilise this model to reduce inpatient bed occupancy. Looking to the future, could telehealth be utilised further to facilitate other “Virtual wards” in the community?

653 The impact of the COVID-19 pandemic on hospitalizations for acute myocardial infarction: the experience of the Clinical Cardiology Unit, University Hospital of Cagliari

Aims During the COVID-19 pandemic, hospitalization rates for acute myocardial infarction (AMI) decreased worldwide. The aim of the study is to evaluate the impact of the COVID-19 pandemic on the admission rate for AMI to our academic hospital, to monitor the trend during the reopening phase and to evaluate if whether changes in air pollution may have influenced hospitalization rates for AMI in Sardinia and Northern Italy. Methods and results We compared the admission rate for AMI in our department and, by analysing the density of nitrogen dioxide (1/cm2), the state of air pollution in Sardinia and Northern Italy in different periods: the national lockdown (9 March–3 May 2020), the 8 weeks before the start of the lockdown, the 8 weeks after the end of the lockdown and the corresponding time period in 2019 (from 9 March to 3 May 2019). A marked decline in AMI admissions was observed during the lockdown period in comparison with the 8 weeks before the start of the lockdown (−47%, 95% CI: 37.5–56.7, P &lt; 0.0001) and the corresponding period in 2019 (−52.8%, 95% CI: 43–65, P &lt; 0.0001). There was a significant reduction in hospitalizations for NSTEMI during the lockdown period in comparison with the 8 weeks before the start of lockdown (−71.8%, 95% CI: 62.3–79.6, P &lt; 0.0001) and the corresponding time period in 2019 (−70.5%, 95% CI: 60.9–78.5, P &lt; 0.0001). Similar trends were seen in the group of STEMI patients, but the fall in admissions was less than that of NSTEMI patients. During the lockdown period, the hospitalizations for STEMI fell by 31.5% (95% CI: 23.2–41.4, P = 0.19) and 49% (95% CI: 39.4–58.6, 47 vs. 24 admissions, P = 0.009) in comparison to the 8 weeks before the start of lockdown and the corresponding period in 2019, respectively. We observed a rise in AMI admissions during the 8 weeks after the lockdown (+47%, 95% CI: 37.5–56.7, P &lt; 0.0001), for both NSTEMI (+71.2%, 95% CI: 61.7–79.1, P &lt; 0.0001) and STEMI (+33.4%, 95% CI: 24.9–43.1, P = 0.15). In Sardinia the relative change in nitrogen dioxide density during the time of lockdown was negligible with little or no impact on the environment (−19%, 95% CI: 12.5–27.7, P = 0.65), if we consider it occurred within a range of very low values of nitrogen dioxide (11.5 ± 3 e 14.1 ± 5 μmol/m2). In contrast, in Northern Italy during the lockdown there was a marked decrease in NO2 concentration in comparison with the 8 weeks before the start of lockdown (−53%, 95% CI: 43–62.4, 25.1 ± 16.2 e 54.2 ± 43.5 μmol/m2, P &lt; 0.0001). Conclusions Since air pollution did not change substantially in our region, the environment factor cannot explain the decline in the number of admissions for AMI we recorded during the lockdown. Fear of contagion is the most plausible reason for the drop of hospitalizations for AMI during the lockdown period.