scholarly journals Analysis of Deaths During the Severe Acute Respiratory Syndrome (SARS) Epidemic in Singapore: Challenges in Determining a SARS Diagnosis

2004 ◽  
Vol 128 (2) ◽  
pp. 195-204 ◽  
Author(s):  
Pek Yoon Chong ◽  
Paul Chui ◽  
Ai E. Ling ◽  
Teri J. Franks ◽  
Dessmon Y. H. Tai ◽  
...  

Abstract Context.—An outbreak of severe acute respiratory syndrome (SARS), an infectious disease attributed to a novel coronavirus, occurred in Singapore during the first quarter of 2003 and led to 204 patients with diagnosed illnesses and 26 deaths by May 2, 2003. Twenty-one percent of these patients required admission to the medical intensive care unit. During this period, the Center for Forensic Medicine, Health Sciences Authority, Singapore, performed a total of 14 postmortem examinations for probable and suspected SARS. Of these, a total of 8 were later confirmed as SARS infections. Objective.—Our series documents the difficulties encountered at autopsy during the initial phases of the SARS epidemic, when the pattern of infection and definitive diagnostic laboratory criteria were yet to be established. Design.—Autopsies were performed by pathologists affiliated with the Center for Forensic Medicine, Health Sciences Authority, Singapore. Tissue was accessed and read at the Tan Tock Seng Hospital, Singapore, and at the Armed Forces Institute of Pathology, Washington, DC. Autopsy tissue was submitted to the Virology Department, Singapore General Hospital, for analysis, and in situ hybridization for the SARS coronavirus was carried out at the National Institute of Infectious Diseases, Tokyo, Japan. Results.—Thirteen of 14 patients showed features of diffuse alveolar damage. In 8 patients, no precipitating etiology was identified, and in all of these patients, we now have laboratory confirmation of coronavirus infection. Two of the 8 patients presented at autopsy as sudden unexpected deaths, while the remaining 6 patients had been hospitalized with varying lengths of stay in the intensive care unit. In 3 patients, including the 2 sudden unexpected deaths, in situ hybridization showed the presence of virally infected cells within the lung. In 4 of the 8 SARS patients, pulmonary thromboemboli were also recognized on gross examination, while one patient had marantic cardiac valvular vegetations. Conclusions.—It is unfortunate that the term atypical pneumonia has been used in conjunction with SARS. Although nonspecific by itself, the term does not accurately reflect the underlying dangers of viral pneumonia, which may progress rapidly to acute respiratory distress syndrome. We observed that the clinical spectrum of disease as seen in our autopsy series included sudden deaths. This is a worrisome finding that illustrates that viral diseases will have a spectrum of clinical presentations and that the diagnoses made for such patients must incorporate laboratory as well as clinical data.

2021 ◽  
Vol 36 (1) ◽  
pp. 55-70
Author(s):  
Jeffrey Haspel ◽  
Minjee Kim ◽  
Phyllis Zee ◽  
Tanja Schwarzmeier ◽  
Sara Montagnese ◽  
...  

We currently find ourselves in the midst of a global coronavirus disease 2019 (COVID-19) pandemic, caused by the highly infectious novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here, we discuss aspects of SARS-CoV-2 biology and pathology and how these might interact with the circadian clock of the host. We further focus on the severe manifestation of the illness, leading to hospitalization in an intensive care unit. The most common severe complications of COVID-19 relate to clock-regulated human physiology. We speculate on how the pandemic might be used to gain insights on the circadian clock but, more importantly, on how knowledge of the circadian clock might be used to mitigate the disease expression and the clinical course of COVID-19.


2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S257-S258
Author(s):  
Raul Davaro ◽  
alwyn rapose

Abstract Background The ongoing pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections has led to 105690 cases and 7647 deaths in Massachusetts as of June 16. Methods The study was conducted at Saint Vincent Hospital, an academic health medical center in Worcester, Massachusetts. The institutional review board approved this case series as minimal-risk research using data collected for routine clinical practice and waived the requirement for informed consent. All consecutive patients who were sufficiently medically ill to require hospital admission with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection by positive result on polymerase chain reaction testing of a nasopharyngeal sample were included. Results A total of 109 consecutive patients with COVID 19 were admitted between March 15 and May 31. Sixty one percent were men, the mean age of the cohort was 67. Forty one patients (37%) were transferred from nursing homes. Twenty seven patients died (24%) and the majority of the dead patients were men (62%). Fifty one patients (46%) required admission to the medical intensive care unit and 34 necessitated mechanical ventilation, twenty two patients on mechanical ventilation died (63%). The most common co-morbidities were essential hypertension (65%), obesity (60%), diabetes (33%), chronic kidney disease (22%), morbid obesity (11%), congestive heart failure (16%) and COPD (14%). Five patients required hemodialysis. Fifty five patients received hydroxychloroquine, 24 received tocilizumab, 20 received convalescent plasma and 16 received remdesivir. COVID 19 appeared in China in late 2019 and was declared a pandemic by the World Health Organization on March 11, 2020. Our study showed a high mortality in patients requiring mechanical ventilation (43%) as opposed to those who did not (5.7%). Hypertension, diabetes and obesity were highly prevalent in this aging population. Our cohort was too small to explore the impact of treatment with remdesivir, tocilizumab or convalescent plasma. Conclusion In this cohort obesity, diabetes and essential hypertension are risk factors associated with high mortality. Patients admitted to the intensive care unit who need mechanical ventilation have a mortality approaching 50 %. Disclosures All Authors: No reported disclosures


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Giovanna E. Carpagnano ◽  
Giovanni Migliore ◽  
Salvatore Grasso ◽  
Vito Procacci ◽  
Emanuela Resta ◽  
...  

Abstract Background Some studies investigated epidemiological and clinical features of laboratory-confirmed patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) the virus causing coronavirus disease 2019 (COVID-19), but limited attention has been paid to the follow-up of hospitalized patients on the basis of clinical setting and the expertise of clinical management. Methods In the present single-centered, retrospective, observational study, we reported findings from 87 consecutive laboratory-confirmed COVID-19 patients with moderate-to-severe acute respiratory syndrome hospitalized in an intermediate Respiratory Intensive Care Unit (RICU), subdividing the patients in two groups according to the admission date (before and after March 29, 2020). Results With improved skills in the clinical management of COVID-19, we observed a significant lower mortality in the T2 group compared with the T1 group and a significantly difference in terms of mortality among the patients transferred in Intensive Care Unit (ICU) from our intermediate RICU (100% in T1 group vs. 33.3% in T2 group). The average length of stay in intermediate RICU of ICU-transferred patients who survived in T1 and T2 was significantly longer than those who died (who died 3.3 ± 2.8 days vs. who survived 6.4 ± 3.3 days). T Conclusions The present findings suggested that an intermediate level of hospital care may have the potential to modify survival in COVID-19 patients, particularly in the present phase of a more skilled clinical management of the pandemic.


Author(s):  
Harry Bateman ◽  
Karen Johnston ◽  
Andrew Badacsonyi ◽  
Natalie Clarke ◽  
Kathleen Conneally ◽  
...  

This North London hospital has a 14-bed Intensive Care Unit (ICU). As a small District General ICU, staff exposure to emergency scenarios can be infrequent. Lack of practice can lead to a reduction in staff confidence and knowledge when these scenarios are encountered, especially during the COVID pandemic. The ICU had not previously undertaken in situ multi-disciplinary team (MDT) simulation sessions on the unit.The aim of the study was to introduce a novel programme of MDT simulation sessions in the ICU and provide feedback with the aim of increasing both staff confidence in managing emergency scenarios and staff understanding of the impact of human factors.A team of ICU Simulation Champions created emergency scenarios that could occur in the ICU. Pre-simulation and post-simulation questionnaires were produced to capture staff opinion on topics including benefits and barriers to simulation training and confidence in managing ICU emergencies. Members of the ICU MDT would be selected to participate in simulation scenarios. Afterwards, debrief sessions would be facilitated by Simulation Champions and Airline Pilots with a particular focus on competence in managing the emergency and human factors elements, such as communication and leadership. Participants would then be surveyed with the post-simulation questionnaire.Nine simulation sessions were conducted between October 2020 and June 2021. The sessions occurred within the ICU during the working day in a designated bay with the availability of all standard ICU resources and involved multiple MDT members to aid fidelity. Feedback by Simulation Champions mainly focussed on knowledge related to the ICU emergency, whilst the Airline Pilots provided expert feedback on human factors training. Fifty-five staff members completed the pre-simulation questionnaire and 37 simulation participants completed the post-simulation questionnaire. Prior to simulation participation, 28.3% of respondents agreed they felt confident managing emergency scenarios on ICU – this figure increased to 54.1% following simulation participation. 94.4% of simulation participants agreed that their knowledge of human factors had improved following the simulation and 100% of participants wanted further simulation teaching. Figure 1 shows a thematic analysis of the responses from 31 participants who were questioned about perceived benefits from simulation teaching. Following the success of the programme, the Hospital Trust will continue to support and develop inter-speciality and inter-professional training, and have funded the appointment of an ICU Simulation Fellow to continue to lead and enhance future in situ simulation teaching on the ICU.


2005 ◽  
Vol 36 (3) ◽  
pp. 303-309 ◽  
Author(s):  
Wun-Ju Shieh ◽  
Cheng-Hsiang Hsiao ◽  
Christopher D. Paddock ◽  
Jeannette Guarner ◽  
Cynthia S. Goldsmith ◽  
...  

2020 ◽  
Vol 22 (2) ◽  
pp. 103-104
Author(s):  
Andrew Udy ◽  
◽  

The current global severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has thrust intensive care medicine to the forefront of health care practice in Australia and New Zealand. Indeed, reports from other countries and jurisdictions convey highly confronting statistics about the scale of this public health emergency, particularly in terms of the demand on intensive care unit (ICU)services. Whether this occurs here remains to be seen, although if such a scenario does eventuate, it will represent an unprecedented challenge to our community. In parallel, these events offer the opportunity for greater coordination, improved communication, and innovation in clinical care, which are principles that in many ways define our specialty.


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