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Clinical update on COVID-19 for the emergency clinician: Presentation and evaluation
Brit Long1, Brandon M Carius2, Summer Chavez3
1SAUSHEC, Emergency Medicine, Brooke Army Medical Center, Fort Sam Houston, TX, USA.
Insights
This review updates emergency clinicians on Coronavirus disease 2019 (COVID-19) presentation and evaluation. It covers variants like Delta and Omicron, common symptoms, severe complications, and diagnostic tools for effective patient management.
Area of Science:
- Emergency Medicine
- Infectious Diseases
- Virology
Background:
- Coronavirus disease 2019 (COVID-19), caused by SARS-CoV-2, has led to global morbidity and mortality.
- New variants, including Delta and Omicron, exhibit increased infectivity and impact patient outcomes.
- While most COVID-19 cases are mild, a significant number of patients, particularly older individuals and those with comorbidities, experience critical illness.
Purpose of the Study:
- To provide emergency clinicians with a focused update on the clinical presentation of COVID-19.
- To outline current evaluation strategies for patients with COVID-19 in emergency settings.
- To highlight key diagnostic and prognostic tools relevant to emergency care.
Main Methods:
- Review of current literature on COVID-19 presentation and evaluation.
- Focus on emergency department (ED) specific diagnostic and prognostic approaches.
- Inclusion of information on various SARS-CoV-2 variants and their clinical implications.
Main Results:
- Common symptoms include upper respiratory issues, fever, and sensory changes.
- Extrapulmonary complications can affect cardiovascular, neurologic, gastrointestinal, and dermatologic systems.
- ED evaluation involves targeted COVID-19 testing, end-organ injury assessment, and judicious use of imaging (radiography, CT, ultrasound).
Conclusions:
- Emergency clinicians require up-to-date knowledge on COVID-19 presentation and evaluation.
- Risk scores can aid prognostication but should complement clinical judgment.
- Comprehensive assessment is crucial for managing diverse COVID-19 presentations and complications.
Introduction:
Coronavirus disease of 2019 (COVID-19) has resulted in millions of cases worldwide. As the pandemic has progressed, the understanding of this disease has evolved.
Objective:
This first in a two-part series on COVID-19 updates provides a focused overview of the presentation and evaluation of COVID-19 for emergency clinicians.
Discussion:
COVID-19, caused by Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2), has resulted in significant morbidity and mortality worldwide. Several variants exist, including a variant of concern known as Delta (B.1.617.2 lineage) and the Omicron variant (B.1.1.529 lineage). The Delta variant is associated with higher infectivity and poor patient outcomes, and the Omicron variant has resulted in a significant increase in infections. While over 80% of patients experience mild symptoms, a significant proportion can be critically ill, including those who are older and those with comorbidities. Upper respiratory symptoms, fever, and changes in taste/smell remain the most common presenting symptoms. Extrapulmonary complications are numerous and may be severe, including the cardiovascular, neurologic, gastrointestinal, and dermatologic systems. Emergency department evaluation includes focused testing for COVID-19 and assessment of end-organ injury. Imaging may include chest radiography, computed tomography, or ultrasound. Several risk scores may assist in prognostication, including the 4C (Coronavirus Clinical Characterisation Consortium) score, quick COVID Severity Index (qCSI), NEWS2, and the PRIEST score, but these should only supplement and not replace clinical judgment.
Conclusion:
This review provides a focused update of the presentation and evaluation of COVID-19 for emergency clinicians.
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