[Post COVID - Just a matter of definition?]

Definitions and symptoms of the post-COVID syndrome: an updated systematic umbrella review

Post-COVID syndrome (PCS) describes a persistent complex of symptoms following a COVID-19 episode, lasting at least 4 to 12 weeks, depending on the specific criteria used for its definition. It is often associated with moderate to severe impairments of daily life and represents a major burden for many people worldwide. However, especially during the first two years of the COVID-19 pandemic, therapeutic and diagnostic uncertainties were prominent due to the novelty of the disease and non-specific definitions that overlooked functional deficits and lacked objective assessment. The present work comprehensively examines the status of PCS definitions as depicted in recent reviews and meta-analyses, alongside exploring associated symptoms and functional impairments. We searched the database Pubmed for reviews and meta-analysis evaluating PCS in the period between May 31, 2022, to December 31, 2023. Out of 95 studies, 33 were selected for inclusion in our analyses. Furthermore, we extended upon prior research by systematically recording the symptoms linked with PCS as identified in the studies. We found that fatigue, neurological complaints, and exercise intolerance were the most frequently reported symptoms. In conclusion, over the past eighteen months, there has been a notable increase in quantity and quality of research studies on PCS. However, there still remains a clear need for improvement, particularly with regard to the definition of the symptoms necessary for diagnosing this syndrome. Enhancing this aspect will render future research more comparable and precise, thereby advancing and understanding PCS.

[Updated S1 guideline on long/post-COVID: relevant aspects for pain medicine]

BACKGROUND

The S1 guideline on long/post-COVID of the AWMF [German Association of the Medical Scientific Societies] registration number 020-027) was updated in August 2022.

METHODS

Under the coordination of the German Society of Pneumology, the guideline was updated by 21 scientific associations, two professional associations and clinical centers each and one institute and statutory accident insurance each. Each scientific association was responsible for its own chapter. The German Pain Society prepared the chapter "Pain". The coordinators of each chapter performed a selective literature search and also received approval for the chapter within their scientific association. During an internal period of comments, all representatives of the participating institutions could comment on all chapters. The AWMF task force commented on the draft of the guideline, which was then finally approved by the boards of all participating institutions.

RESULTS

Coronavirus disease 2019 (COVID-19) increases the risk of persistent headache and musculoskeletal pain. Long/Post-COVID pain is frequently associated with fatigue and cognitive problems. A specialist assessment might be considered if symptoms with limitations of daily activities persist 3 months after the infection. The diagnostic workup of long/post-COVID-associated pain should be performed according to the standards of pain medicine. Management should follow the pain guidelines of the AWMF.

CONCLUSIONS

The updated S1 guideline on long/post-COVID is a clinical manual which offers orientation for diagnostics and treatment despite limited data.

Definition of the Post-COVID syndrome using a symptom-based Post-COVID score in a prospective, multi-center, cross-sectoral cohort of the German National Pandemic Cohort Network (NAPKON)

PURPOSE

The objective examination of the Post-COVID syndrome (PCS) remains difficult due to heterogeneous definitions and clinical phenotypes. The aim of the study was to verify the functionality and correlates of a recently developed PCS score.

METHODS

The PCS score was applied to the prospective, multi-center cross-sectoral cohort (in- and outpatients with SARS-CoV-2 infection) of the "National Pandemic Cohort Network (NAPKON, Germany)". Symptom assessment and patient-reported outcome measure questionnaires were analyzed at 3 and 12 months (3/12MFU) after diagnosis. Scores indicative of PCS severity were compared and correlated to demographic and clinical characteristics as well as quality of life (QoL, EQ-5D-5L).

RESULTS

Six hundred three patients (mean 54.0 years, 60.6% male, 82.0% hospitalized) were included. Among those, 35.7% (215) had no and 64.3% (388) had mild, moderate, or severe PCS. PCS severity groups differed considering sex and pre-existing respiratory diseases. 3MFU PCS worsened with clinical severity of acute infection (p = .011), and number of comorbidities (p = .004). PCS severity was associated with poor QoL at the 3MFU and 12MFU (p < .001).

CONCLUSION

The PCS score correlated with patients' QoL and demonstrated to be instructive for clinical characterization and stratification across health care settings. Further studies should critically address the high prevalence, clinical relevance, and the role of comorbidities.

TRAIL REGISTRATION NUMBER

The cohort is registered at www.

CLINICALTRIALS

gov under NCT04768998.

[Follow-up outpatient clinics for patients with post COVID: a survey to assess and characterize aspects of care]

After acute infection with the SARS-CoV-2 virus, up to 10 % of affected individuals suffer from long-term health impairments, also referred to as "Post-COVID". In Germany, specialized outpatient clinics have been established to care for patients with Post-COVID. A structured survey of the care situation is not yet available, but essential for a demand-oriented care. The present study aimed to systematically assess and describe structural and process-related aspects of care, and to perform an inventory and needs analysis of Post-COVID outpatient clinics in Germany.An online survey was developed assessing the structure and organization of the outpatient clinics, service offerings and networking of care from the perspective of the outpatient clinic directors. A total of 95 outpatient clinics were identified, and an invitation to participate in the online survey was sent via e-mail to the directors of the outpatient clinics. Data were collected between February and May 2022. Descriptive data analysis was performed.A total of 28 outpatient clinic managers (29 %) took part in the survey. Participants were between 32 and 66 years old, and 61 % (n = 17) were male. The outpatient clinics were most frequently affiliated with the specialties of pneumology (n = 10; 36 %), internal medicine, psychiatric and psychosomatic medicine, and neurology (n = 8; 29 %, respectively). Among the outpatient clinic directors, 64 % (n = 18) stated that the time spent waiting for an appointment was more than one month. Utilization (n = 25; 89 %), appointment demand (n = 26; 93 %), and the need for more Post-COVID outpatient clinics (n = 20; 71 %) were rated as high by the outpatient clinic directors. Nearly all directors reported networking with in-clinic facilities (n = 27; 96 %), with primary care physicians and with specialists in private practice (n = 21; 75 %, respectively).The main focus of care is pneumology. Internal medicine, psychiatry/psychosomatics and neurology are also equally represented. Our data further suggest a high demand for Post-COVID outpatient clinics and the need to expand this care offer.

Variations and Predictors of Post-COVID Syndrome Severity in Patients Attending a Post-COVID Outpatient Clinic

A relevant proportion of patients suffer from long-lasting impairments following an acute SARS-CoV-2 infection. The proposed post-COVID syndrome (PCS) score may improve comparison in the course and classification of affected patients. A prospective cohort of 952 patients presenting to the post-COVID outpatient clinic at Jena University Hospital, Germany, was enrolled. Patients received a structured examination. PCS score was calculated per visit. A total of 378 (39.7%) and 129 (13.6%) patients of the entire population visited the outpatient clinic two or three times, respectively (female: 66.4%; age: 49.5 (SD = 13) years). The initial presentation took place, on average, 290 (SD = 138) days after acute infection. The most frequently reported symptoms were fatigue (80.4%) and neurological impairments (76.1%). The mean PCS scores of patients with three visits were 24.6 points (SD = 10.9), 23.0 points (SD = 10.9) and 23.5 points (SD = 11.5) (p = 0.407), indicating moderate PCS. Female sex (p < 0.001), preexisting coagulation disorder (p = 0.021) and coronary artery disease (p = 0.032) were associated with higher PCS scores. PCS is associated with a multitude of long-lasting problems. The PCS score has proven its capability to objectify and quantify PCS symptoms in an outpatient setting. The influence of therapeutic measures on various PCS aspects should be the subject of further analyses.