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Published on: September 8, 2023
A Practical Approach to Tailor the Term Long COVID for Diagnostics, Therapy and Epidemiological Research for Improved
Kathryn Hoffmann1, Michael Stingl2, Liam O'Mahony3
1Department of Primary Care Medicine, Center for Public Health, Medical University of Vienna, Kinderspitalgasse 15/I, 1090, Vienna, Austria. Kathryn.hoffmann@meduniwien.ac.at.
Insights
Long COVID (LC) needs clearer terminology for research and treatment. Refining LC into three subgroups improves diagnostics and understanding of long-term SARS-CoV-2 effects, including post-exertional malaise.
Area of Science:
- Infectious Diseases
- Public Health
- Clinical Medicine
Background:
- Long COVID (LC) encompasses the diverse long-term health consequences of SARS-CoV-2 infection.
- Current terminology for LC is too general, hindering precise research, diagnosis, and treatment strategies.
- Existing classifications, like NICE guidelines, do not fully capture real-world observations of post-COVID conditions.
Purpose of the Study:
- To propose a refined terminology for Long COVID (LC) by stratifying it into three distinct subgroups.
- To enhance epidemiological research, diagnostics, and therapeutic interventions for SARS-CoV-2 long-term effects.
- To emphasize the importance of differentiating specific conditions within LC, such as post-exertional malaise (PEM).
Main Methods:
- Reviewing existing definitions and guidelines for Long COVID (LC).
- Analyzing real-world observations of post-COVID conditions.
- Proposing a new stratification of LC into three subgroups: ongoing symptomatic COVID-19, SARS-CoV-2 induced or exacerbated diseases, and post-acute COVID condition.
- Recommending the use of ICD-10 codes for subgroup-specific documentation.
Main Results:
- The general term Long COVID (LC) complicates epidemiological studies and clinical practice.
- A proposed stratification includes: ongoing symptomatic COVID-19, SARS-CoV-2 induced/exacerbated diseases, and post-acute COVID condition.
- Post-acute COVID condition encompasses diverse symptoms like post-exertional malaise (PEM), dysautonomia, and cognitive dysfunction, requiring specific diagnostic approaches.
Conclusions:
- Refining the terminology of Long COVID (LC) into specific subgroups is essential for advancing research and clinical care.
- Accurate classification and subgroup-specific documentation (e.g., using ICD-10 codes) are crucial for tracking and managing long-term SARS-CoV-2 effects.
- Differentiating conditions like post-exertional malaise within post-acute COVID condition is critical for effective diagnosis and treatment.
Abstract:
The term long COVID (LC) effectively describes the broad long-term disease burden of severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infections, encompassing individual suffering and significant socioeconomic impacts. However, its general use hampers precise epidemiological research, diagnostics and therapeutic strategies. Misinterpretations occur, for example, when population surveys are compared to studies using health record data, because both refer to these data as LC. This also emphasizes the need for different terminology. The National Institute for Health and Care Excellence (NICE) rapid guideline differentiates ongoing symptomatic COVID-19 from post-COVID conditions, yet real-world observations challenge these two subgroup definitions. We propose refining the term LC into three subgroups: ongoing symptomatic COVID-19, SARS-CoV-2 induced or exacerbated diseases and post-acute COVID condition. This stratification aids targeted diagnostics, treatment and epidemiological research. Subgroup-specific documentation using the International Classification of Diseases, Tenth Revision (ICD-10) codes ensures accurate tracking and understanding of long-term effects. The subgroup of post-acute COVID condition again includes various symptoms, syndromes and diseases like post-exertional malaise (PEM), dysautonomia or cognitive dysfunctions. In this regard, differentiation, especially considering PEM, is crucial for effective diagnostics and treatment.
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