Tag: post-acute covid

Use of Cardiopulmonary Stress Testing for Patients With Unexplained Dyspnea Post-Coronavirus Disease

Abstract:

Objectives: The authors used cardiopulmonary exercise testing (CPET) to define unexplained dyspnea in patients with post-acute sequelae of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection (PASC). We assessed participants for criteria to diagnose myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Background: Approximately 20% of patients who recover from coronavirus disease (COVID) remain symptomatic. This syndrome is named PASC. Its etiology is unclear. Dyspnea is a frequent symptom.

Methods: The authors performed CPET and symptom assessment for ME/CFS in 41 patients with PASC 8.9 ± 3.3 months after COVID. All patients had normal pulmonary function tests, chest X-ray, and chest computed tomography scans. Peak oxygen consumption (peak VO2), slope of minute ventilation to CO2 production (VE/VCO2 slope), and end tidal pressure of CO2 (PetCO2) were measured. Ventilatory patterns were reviewed with dysfunctional breathing defined as rapid erratic breathing.

Results: Eighteen men and 23 women (average age: 45 ± 13 years) were studied. Left ventricular ejection fraction was 59% ± 9%. Peak VO2 averaged 20.3 ± 7 mL/kg/min (77% ± 21% predicted VO2). VE/VCO2 slope was 30 ± 7. PetCO2 at rest was 33.5 ± 4.5 mm Hg. Twenty-four patients (58.5%) had a peak VO2 <80% predicted. All patients with peak VO2 <80% had a circulatory limitation to exercise. Fifteen of 17 patients with normal peak VO2 had ventilatory abnormalities including peak respiratory rate >55 (n = 3) or dysfunctional breathing (n = 12). For the whole cohort, 88% of patients (n = 36) had ventilatory abnormalities with dysfunctional breathing (n = 26), increased VE/VCO2 (n = 17), and/or hypocapnia PetCO2 <35 (n = 25). Nineteen patients (46%) met criteria for ME/CFS.

Conclusions: Circulatory impairment, abnormal ventilatory pattern, and ME/CFS are common in patients with PASC. The dysfunctional breathing, resting hypocapnia, and ME/CFS may contribute to symptoms. CPET is a valuable tool to assess these patients.

Source: Mancini DM, Brunjes DL, Lala A, Trivieri MG, Contreras JP, Natelson BH. Use of Cardiopulmonary Stress Testing for Patients With Unexplained Dyspnea Post-Coronavirus Disease. JACC Heart Fail. 2021 Dec;9(12):927-937. doi: 10.1016/j.jchf.2021.10.002. PMID: 34857177.  https://pubmed.ncbi.nlm.nih.gov/34857177/

Skeletal muscle alterations in patients with acute Covid-19 and post-acute sequelae of Covid-19

Abstract:

Background and methods: Skeletal muscle-related symptoms are common in both acute Covid-19 and Post-Acute Sequelae of Covid-19 (PASC). In this narrative review, we discuss cellular and molecular pathways that are affected, and consider these in regard to skeletal muscle involvement in other conditions, such as acute respiratory distress syndrome, critical illness myopathy and post-viral fatigue syndrome.
Results: Patients with severe Covid-19 and PASC suffer from skeletal muscle weakness and exercise intolerance. Histological sections present muscle fiber atrophy, metabolic alterations, and immune cell infiltration. Contributing factors to weakness and fatigue in patients with severe Covid-19 include systemic inflammation, disuse, hypoxemia, and malnutrition. These factors also contribute to post-ICU syndrome and ICU-acquired weakness, and likely explain a substantial part of Covid-19-acquired weakness. The skeletal muscle weakness and exercise intolerance associated with PASC are more obscure and different factors likely contribute. Direct SARS-CoV-2 viral infiltration into skeletal muscle or an aberrant immune system likely contribute. Similarities between skeletal muscle alterations in PASC and chronic fatigue syndrome deserve further study.
Conclusion: Both SARS-CoV-2 specific factors and generic consequences of acute disease likely underlie the observed skeletal muscle alterations in both acute Covid 19 and PASC.
Source: Soares, M., Eggelbusch, M., Naddaf, E., Gerrits, K., van der Schaaf, M., van den Borst, B., Wiersinga, W. J., et al. Skeletal muscle alterations in patients with acute Covid-19 and post-acute sequelae of Covid-19. Journal of Cachexia, Sarcopenia and Muscle. https://doi.org/10.17863/CAM.78509 https://www.repository.cam.ac.uk/handle/1810/331064

Post COVID-19 Syndrome in Patients with Asymptomatic/Mild Form

Abstract:

Post COVID-19 Syndrome (PCS) is a complex of various symptoms developing a month or more after the acute phase of the disease. The cases of PCS development among patients with asymptomatic/mild forms are frequently reported; however, the pathogenesis of PCS in this group of patients is still not completely clear. The publications about COVID-19 which were published in online databases from December 2019 to September 2021 are analyzed in this review. According to the analysis, PCS develops on average in 30-60% of patients, mainly among women. Fatigue, shortness of breath, cough, and anosmia were reported as the most common symptoms. The possible association between the described PCS symptoms and brain damage was revealed.

We assume the possibility of an alternative course of COVID-19, which develops in genetically predisposed individuals with a stronger immune response, in which it predominantly affects the cells of the nervous system, possibly with the presence of an autoimmune component, which might have similarity with chronic fatigue syndrome or autoimmune disautonomia. Thus, the gender (female) and the presence of anosmia during an asymptomatic or mild course of the disease can be predictive factors for the development of PCS, which can be caused by autoimmune damage to neurons, glia, and cerebral vessels.

Source: Malkova A, Kudryavtsev I, Starshinova A, Kudlay D, Zinchenko Y, Glushkova A, Yablonskiy P, Shoenfeld Y. Post COVID-19 Syndrome in Patients with Asymptomatic/Mild Form. Pathogens. 2021 Oct 30;10(11):1408. doi: 10.3390/pathogens10111408. PMID: 34832564. https://pubmed.ncbi.nlm.nih.gov/34832564/

Post-COVID syndrome: the aftershock of SARS-CoV-2

Introduction:

Significant time has passed since the coronavirus disease of 2019 (COVID-19) pandemic outbreak, which led to severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) infection in hundreds of millions of individuals all around the globe. Accumulation evidence along the pandemic raised an association between the SARS-CoV-2 and autoimmunity (1). SARS-CoV-2 infected patients have a high presence of various autoantibodies (1). Moreover, numerous cases of new-onset of autoimmune-related disorders had been documented following the infection, including both organ-specific and systemic autoimmune diseases (1).

Recent studies focused on analyzing recovered COVID-19 patients demonstrate a broad spectrum of persistent and systemic symptoms, which had got the novel terms of “post-COVID syndrome”, “long COVID” and “chronic COVID-19” (2). This new disorder had led to the understanding that the absence of SARS-CoV-2 following COVID-19 does not necessarily mean full recovery (2).

Studies conducted follow-ups on COVID-19 patients indicate that 50-80% of symptomatic COVID-19 patients who recovered report non-specific symptoms, most commonly fatigue, headache, dyspnea, anosmia, and memory complaint (3–5). An Italian study that examined patients after a mean of 60 days from the first COVID-19 symptom on-set had found only 12.6% of the patients completely recovered; 55% had three or more symptoms, and worsened quality of life was observed among 44% of patients (3). Intriguingly, a systematic review and meta-analysis reported more than 50 possible long-term effects of the SAR-CoV-2 infection (6). The chronic phase of COVID-19 is also presented in objective findings; for example, a study conducted in Germany had found that 78% of recently recovered symptomatic COVID-19 patients had at least one chronic symptom; the most common abnormality was myocardial inflammation (60%) (4).

In this issue of the journal, Bertin D et al. documented a case of post-COVID syndrome with a one-year follow-up. This case describes persistent anti-cardiolipin IgG autoantibodies and eosinopenia with ongoing neurologic symptoms, demonstrating the long-term disease course of COVID-19 in many patients. Anti-cardiolipin autoantibodies and eosinopenia were defined as independent factors associated with COVID-19 severity, indicating their active involvement in the progression of the disease (7,8). Additional studies that included follow-up on recovered COVID-19 patients describe similar findings: patients report respiratory, neurologic, and non-specific symptoms, accompanied by the presents of autoantibodies (6). Interestingly, in a one-year prospective cohort study, neurocognitive symptoms frequency were found significantly higher in patients with ANA titer of ≥1:160 in comparison to <1:160 at 12 months post–COVID-19 symptom onset (9). It should be emphasized that the development of autoantibodies, which appears to be common following symptomatic SARS-CoV-2 infection, could act as the preclinical stage of many autoimmune diseases. Thus, the long-term autoimmune implications of SARS-CoV-2 could be severe.

Involvement of the autonomic nervous system dysfunction in post-COVID syndrome

Many viruses are well known to contribute to autoimmunity in genetically pre dispositioned individuals, such as those with human leukocyte antigen B27 (10). SARS-CoV-2 had been associated with numerous autoantibodies (1); some are believed to be the basis of the severe forms of COVID-19 (11). Furthermore, these autoantibodies, along with others, could lead to the multi-organ involvement of post-COVID syndrome, which manifests as broad and unspecific symptoms (6). Autoantibodies against the autonomic nervous system compounds are believed to be an incremental part of the post-COVID syndrome etiology. A study that included post-COVID syndrome patients had unidentified in all the subjects between 2 and 7 different functionally active autoantibodies that acted as receptor agonists, such as β2-adrenoceptor, α1-adrenoceptor, and angiotensin II receptor type 1 receptor (12). Functionally active autoantibodies such as those were present in several neurological and cardiac disorders, which might clarify the onset of neurological and cardiovascular symptoms of the post-COVID syndrome (12).

Post-COVID patients commonly have a clinical presentation similar to the encephalomyelitis/chronic fatigue syndrome (ME/CFS): severe fatigue, sleep disorders, cognition impairments, and different manifestations of autonomic dysfunction exacerbated in physical exercise (6,13–15). ME/CFS has an autoimmune etiology, which can be demonstrated by high titers of autoantibodies against autonomic receptors, such as beta-adrenergic and muscarinic receptors (16,17). These autoantibodies, similar to those found in patients with post-COVID symptoms, lead to unspecific symptoms due to autonomic nervous system dysregulation. In addition to ME/CFS, many features of the post-COVID syndrome are shared with fibromyalgia patients. It had been shown that 189/616 (30.7%) of COVID-19 recovered patients satisfied the American College of Rheumatology criteria for fibromyalgia, 43.4% of which were men (18).

Therapeutic options and vaccination

ME/CFS and fibromyalgia have solid evidence of dysregulated immune involvement (16,17,19). Moreover, current studies suggest that immunosuppression, such as monoclonal anti-CD20 antibody and cyclophosphamide, may benefit patients suffering from ME/CFS (20,21). Such immunosuppressive therapeutic options can assist in the depletion of B cells, thus reducing the functionally active autoantibodies linked to autonomic dysfunction. Beneficial effects had also been demonstrated by the use of anti-ß2 adrenergic receptor-binding immunoadsorption (22). It should be emphasized that such treatment can diminish other pathogenic antibodies that the medical community had not yet recognized. Due to the possible involvement of autoantibodies against the autonomic nervous system in the post-COVID syndrome, similar immunosuppressive options in these patients may be effective, thereby should be investigated.

Most individuals infected by SARS-CoV-2 are asymptomatic or experience mild symptoms (23,24). While the frequency of post-COVID syndrome in such individuals is still uncertain, it seems to be much lower than in symptomatic patients (9). Thus, avoiding COVID-19 with SARS-CoV-2 vaccination could prominently assist in preventing long-term symptoms of COVID-19, lower the prevalence of post-COVID syndrome and help overcome the pandemic. Nonetheless, even with the ongoing heist mass vaccination programs, the COVID-19 pandemic will leave its mark.

Conclusion

Due to the accumulating evidence of persistent post-infectious symptoms reported by numerous recovered patients, the focus of the medical and research communities might need to start shifting focus from the acute phase of COVID-19 to the chronic manifestations of the SARS-CoV-2 infection, referred to as by “post-COVID syndrome”. Post-COVID syndrome presents as non-specific symptoms, most commonly fatigue, headache, dyspnea, anosmia, and memory complaint, which is suspiciously similar to the infection-induced myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and fibromyalgia (15,18). As current studies suggest an involvement of immune-related dysfunction in the development of post-COVID syndrome, immunosuppressive therapeutic options could be beneficial in parallel to heist SARS-CoV-2 vaccination of the population (15,20,21).

References

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Article Info

Publication History

Accepted: November 9, 2021
Received: November 9, 2021

Publication stage

In Press Journal Pre-Proof

Identification

DOI: https://doi.org/10.1016/j.ijid.2021.11.020

Copyright

© 2021 The Author(s). Published by Elsevier Ltd on behalf of International Society for Infectious Diseases.

Fatigue in post-acute sequelae of SARS-CoV2 (PASC) treated with oxygen-ozone autohemotherapy – preliminary results on 100 patients

Abstract:

Objective: Post-acute sequelae of SARS-CoV2 infection (PASC) are a novel terminology used to describe post-COVID persistent symptoms, mimicking somehow the previously described chronic fatigue syndrome (CFS). In this manuscript, we evaluated a therapeutical approach to address PASC-derived fatigue in a cohort of past-COVID-19 positive patients.

Patients and methods: A number of 100 patients, previously diagnosed as COVID-19 positive subjects and meeting our eligibility criteria, was diagnosed having PASC-related fatigue. They were recruited in the study and treated with oxygen-ozone autohemotherapy (O2-O3-AHT), according to the SIOOT protocol. Patients’ response to O2-O3-AHT and changes in fatigue were measured with the 7-scoring Fatigue Severity Scale (FSS), according to previously published protocols.

Results: Statistics assessed that the effects of O2-O3-AHT on fatigue reduced PASC symptoms by 67%, as a mean, in all the investigated cohort of patients (H = 148.4786 p < 0.0001) (Figure 1). Patients following O2-O3-AHT therapy, quite completely recovered for PASC-associated fatigue, a quote amounting to about two fifths (around 40%) of the whole cohort undergoing ozone treatment and despite most of patients were female subjects, the effect was not influenced by sex distribution (H = 0.7353, p = 0.39117).

Conclusions: Ozone therapy is able to recover normal functionality and to relief pain and discomfort in the form of PASC-associated fatigue in at least 67% of patients suffering from post-COVID sequelae, aside from sex and age distribution.

Source: Tirelli U, Franzini M, Valdenassi L, Pisconti S, Taibi R, Torrisi C, Pandolfi S, Chirumbolo S. Fatigue in post-acute sequelae of SARS-CoV2 (PASC) treated with oxygen-ozone autohemotherapy – preliminary results on 100 patients. Eur Rev Med Pharmacol Sci. 2021 Sep;25(18):5871-5875. doi: 10.26355/eurrev_202109_26809. PMID: 34604980. https://pubmed.ncbi.nlm.nih.gov/34604980/

Long COVID or Post-acute Sequelae of COVID-19 (PASC): An Overview of Biological Factors That May Contribute to Persistent Symptoms

Abstract:

The novel virus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a pandemic of coronavirus disease 2019 (COVID-19). Across the globe, a subset of patients who sustain an acute SARS-CoV-2 infection are developing a wide range of persistent symptoms that do not resolve over the course of many months. These patients are being given the diagnosis Long COVID or Post-acute sequelae of COVID-19 (PASC). It is likely that individual patients with a PASC diagnosis have different underlying biological factors driving their symptoms, none of which are mutually exclusive.

This paper details mechanisms by which RNA viruses beyond just SARS-CoV-2 have be connected to long-term health consequences. It also reviews literature on acute COVID-19 and other virus-initiated chronic syndromes such as post-Ebola syndrome or myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) to discuss different scenarios for PASC symptom development. Potential contributors to PASC symptoms include consequences from acute SARS-CoV-2 injury to one or multiple organs, persistent reservoirs of SARS-CoV-2 in certain tissues, re-activation of neurotrophic pathogens such as herpesviruses under conditions of COVID-19 immune dysregulation, SARS-CoV-2 interactions with host microbiome/virome communities, clotting/coagulation issues, dysfunctional brainstem/vagus nerve signaling, ongoing activity of primed immune cells, and autoimmunity due to molecular mimicry between pathogen and host proteins. The individualized nature of PASC symptoms suggests that different therapeutic approaches may be required to best manage care for specific patients with the diagnosis

Source: Proal AD, VanElzakker MB. Long COVID or Post-acute Sequelae of COVID-19 (PASC): An Overview of Biological Factors That May Contribute to Persistent Symptoms. Front Microbiol. 2021 Jun 23;12:698169. doi: 10.3389/fmicb.2021.698169. PMID: 34248921; PMCID: PMC8260991. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8260991/ (Full study)

Post COVID syndrome: a new challenge for medicine

Abstract:

The huge concern raised by SARS-CoV2 pandemic about public health management and social impact is still under debate, particularly because COVID-19 may affect infected people much longer than expected from a typical air-borne viral disease. The scientific community is actually wondering about the etiopathogenesis and clinical development of this “post-COVID” complex symptomatology, very close to symptoms typically observed in chronic fatigue syndrome, so recently named as “post-acute sequelae of COVID-19 (PASC)”. This commentary tries to focus on the most recent news about this issue.

Source: Tirelli U, Taibi R, Chirumbolo S. Post COVID syndrome: a new challenge for medicine. Eur Rev Med Pharmacol Sci. 2021 Jun;25(12):4422-4425. doi: 10.26355/eurrev_202106_26154. PMID: 34227079. https://pubmed.ncbi.nlm.nih.gov/34227079/

Post-Acute COVID-19 Symptoms, a Potential Link with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A 6-Month Survey in a Mexican Cohort

Abstract:

The aim of this study was to describe the clinical evolution during 6 months of follow-up of adults recovered from COVID-19. We tried to determine how many met the definition of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). A total of 130 patients (51.0 ± 14 years, 34.6% female) were enrolled. Symptoms were common, participants reported a median number of 9 (IQR 5-14) symptoms. Fatigue was the most common symptom (61/130; 46.9%). Patients with fatigue were older 53.9 ± 13.5 years compared with 48.5 ± 13.3 years in those without fatigue (p = 0.02) and had a longer length of hospital stay, 17 ± 14 days vs. 13 ± 10 days (p = 0.04). There was no difference in other comorbidities between patients with fatigue and those without it, and no association between COVID-19 severity and fatigue.

After multivariate adjustment of all baseline clinical features, only age 40 to 50 years old was positively associated with fatigue, OR 2.5 (95% CI 1.05-6.05) p = 0.03. In our survey, only 17 (13%) patients met the Institute of Medicine’s criteria for “systemic exertion intolerance disease,” the new name of ME/CFS. In conclusion, in some patients, the features of post-acute COVID-19 syndrome overlap with the clinical features of ME/CFS.

Source: González-Hermosillo JA, Martínez-López JP, Carrillo-Lampón SA, Ruiz-Ojeda D, Herrera-Ramírez S, Amezcua-Guerra LM, Martínez-Alvarado MDR. Post-Acute COVID-19 Symptoms, a Potential Link with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A 6-Month Survey in a Mexican Cohort. Brain Sci. 2021 Jun 8;11(6):760. doi: 10.3390/brainsci11060760. PMID: 34201087. https://pubmed.ncbi.nlm.nih.gov/34201087/

Post-Acute COVID-19 Syndrome and the cardiovascular system: What is known?

Abstract:

Post-Acute COVID-19 Syndrome (PACS) is defined by persistent symptoms >3-4 weeks after onset of COVID-19. The mechanism of these persistent symptoms is distinct from acute COVID-19 although not completely understood despite the high incidence of PACS. Cardiovascular symptoms such as chest pain and palpitations commonly occur in PACS, but the underlying cause of symptoms is infrequently known. While autopsy studies have shown that the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) rarely causes direct myocardial injury, several syndromes such as myocarditis, pericarditis, and Postural Orthostatic Tachycardia Syndrome have been implicated in PACS. Additionally, patients hospitalized with acute COVID-19 who display biomarker evidence of myocardial injury may have underlying coronary artery disease revealed by the physiological stress of SARS-CoV-2 infection and may benefit from medical optimization. We review what is known about PACS and the cardiovascular system and propose a framework for evaluation and management of related symptoms.

Source: Dixit NM, Churchill A, Nsair A, Hsu JJ. Post-Acute COVID-19 Syndrome and the cardiovascular system: What is known? Am Heart J Plus. 2021 May;5:100025. doi: 10.1016/j.ahjo.2021.100025. Epub 2021 Jun 24. PMID: 34192289; PMCID: PMC8223036. https://pubmed.ncbi.nlm.nih.gov/34192289/