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Umakanthan S, Katwaroo AR, Bukelo M, Bg S, Boralingaiah P, Ranade AV, Rangan P, Shashidhar S, Kini JR, Kini G. Post-Acute Sequelae of Covid-19: A System-wise Approach on the Effects of Long-Covid-19. AMERICAN JOURNAL OF MEDICINE OPEN 2024; 12:100071. [PMID: 39268246 PMCID: PMC11387218 DOI: 10.1016/j.ajmo.2024.100071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 06/01/2024] [Indexed: 09/15/2024]
Abstract
The SARS-CoV-2 virus responsible for the COVID-19 pandemic has profoundly impacted global health, economics, and society. This review seeks to encompass an overview of current knowledge on COVID-19, including its transmission, pathogenesis, and clinical presentation related to various systems within the human body. COVID-19 is a highly contagious illness that has rapidly spread worldwide. As of August 4, 2023, the WHO reported over 570 million confirmed cases of COVID-19 and over 6.3 million deaths. Although the virus is most common in adults, children can also be infected. Respiratory droplets that are produced when an infected person coughs or sneezes are the primary transmission mode for COVID-19. Additionally, the virus can be disseminated via contact with contaminated surfaces or objects, as it can remain viable for several hours or days. SARS-CoV-2 is a respiratory virus that enters cells by bonding with the angiotensin-converting enzyme 2 (ACE2) receptor. Once inside the cell, the virus replicates and produces new particles that can infect other cells. Interestingly, the effects of post-acute sequelae of SARS-CoV-2 infection (PASC) encompass more than just respiratory system. The findings presented in the data suggest that PASC significantly impacts multiple organs and their respective physiological processes. In light of these observations, we aim to provide a detailed discussion of the relevant findings in this paper. Through our review, we hope to provide healthcare professionals with a deeper understanding of the effects of PASC on the human body, which could ultimately lead to improved patient outcomes and treatment strategies.
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Affiliation(s)
- Srikanth Umakanthan
- Department of Paraclinical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Arun Rabindra Katwaroo
- Trinidad Institute of Medical Technology, Department of Medicine, St. Augustine, Trinidad and Tobago
| | - Maryann Bukelo
- Department of Anatomical Pathology, Laboratory Services, North Central Regional Health Authority, Champ Fleurs, Trinidad and Tobago
| | - Shashidhar Bg
- Department of Critical care Medicine, Manipal Hospital, Bengaluru, India
| | - Prashanth Boralingaiah
- Early Psychosis Prevention and Intervention Center (EPPIC), Orygen Youth Health, Sunshine, Australia
| | - Anu V Ranade
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | | | | | - Jyoti Ramanath Kini
- Department of Pathology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Karnataka, India
| | - Gayathri Kini
- Department of Pathology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Karnataka, India
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Reuner M, Krehbiel J, Rech J, Greiner B, Schäfer I, Herold R, Morawa E, Erim Y. Utilization frequency and patient-reported effectiveness of symptomatic therapies in post-COVID syndrome. BMC Public Health 2024; 24:2577. [PMID: 39313792 PMCID: PMC11421202 DOI: 10.1186/s12889-024-19951-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 08/30/2024] [Indexed: 09/25/2024] Open
Abstract
BACKGROUND To date there is no causal treatment for post-COVID syndrome, leaving symptomatic treatments as the primary recourse. However, the practical implementation and effectiveness of these interventions remain underexplored. This study aimed to investigate the utilization frequency of symptomatic therapies and patient-reported effectiveness across various treatment modalities at a German post-COVID center. METHODS As the baseline investigation we conducted a single-cohort retrospective study to analyze the frequency of symptomatic therapies among post-COVID patients who attended the post-COVID center of the University Hospital of Erlangen, between December 2022 to July 2023. Additionally, we administered a follow-up at least 3 months after the initial presentation, using a questionnaire to assess patient-reported improvements in post-COVID symptoms associated with the symptomatic therapies received. RESULTS Our study included 200 patients (mean age: 44.6 ± 12.6 years; 69.0% women; mean duration since acute infection: 15.3 ± 8.3 months). Pharmacotherapy was the predominant symptomatic treatment (79.5%), with psychotropic drugs (32.5%) and analgesics (31.5%) being the most frequently prescribed. Over half of the patients (55.5%) utilized vitamins and nutritional supplements. Hospital admission rates to acute care occurred in 35.5% of cases; 33.0% underwent inpatient rehabilitation and 31.0% pursued outpatient psychotherapy. Cardiologists (76.5%), pulmonologists (67.5%), and neurologists (65.5%) were the most consulted specialists. Therapies involving medical devices were infrequently employed (12.0%). In a follow-up questionnaire (response rate: 82.5%, 6.3 ± 2.2 months post-baseline), beta-blockers were the most effective pharmacological intervention with 31.5% of patients reporting strong to very strong symptom improvement, followed by antibiotics (29.6%). Furthermore, 33.0% of the patients perceived plasmapheresis to strongly alleviate symptoms. Only a small proportion of the sample attributed a strong or very strong symptom improvement to outpatient psychotherapy (11.0%). CONCLUSION This study provides initial insights into symptomatic therapy utilization and patient-reported symptom improvement in post-COVID syndrome. Further research into symptoms clusters and interdisciplinary collaboration are warranted to comprehensively address the multifaceted physical and psychological symptomatology. TRIAL REGISTRATION The study was registered at the German Clinical Trials Register (DRKS-ID: DRKS00033621) on March 20, 2024.
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Affiliation(s)
- Miriam Reuner
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
| | - Johannes Krehbiel
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
- Post-COVID Center, University Hospital of Erlangen, 91054, Erlangen, Germany
| | - Jürgen Rech
- Post-COVID Center, University Hospital of Erlangen, 91054, Erlangen, Germany
- Department of Internal Medicine III, Rheumatology and Immunology, University Hospital of Erlangen, Friedrich- Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
| | - Brigitte Greiner
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
| | - Isabel Schäfer
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
| | - Regina Herold
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
| | - Eva Morawa
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany.
| | - Yesim Erim
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital of Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany
- Post-COVID Center, University Hospital of Erlangen, 91054, Erlangen, Germany
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Torres F, Shedd C, Kaza V, Bollineni S, Banga A, Mohanka MR, Ladikos N, Wijesinha M, Mahan LD, Lawrence A, Joerns J, Terada L, Timofte I. Outpatient management of Post-COVID syndrome - single center experience. Heart Lung 2024; 67:137-143. [PMID: 38759575 DOI: 10.1016/j.hrtlng.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND COVID patients continue to experience unremitting symptoms that extend far beyond the initial illness. While there is rapid accumulation of data on acute COVID treatment in hospitalized patients, little is known regarding post-COVID management. OBJECTIVES To describe our center's experience treating post-COVID sub-syndromes encountered in Post-COVID Lung Clinic. METHODS We retrospectively reviewed data on 98 post-COVID patients evaluated in our clinic between 07/01/2020-12/31/2022. We encountered three distinct post-COVID subtypes: 1) respiratory complaints associated with increased O2 requirements and abnormal CT findings (post-COVID interstitial lung disease [ILD]), 2) respiratory complaints associated with tachycardia (post-COVID dyspnea-tachycardia syndrome [DTS]). Post-COVID ILD patients (n = 28) received steroids in combination with cell cycle inhibitor (mycophenolate mofetil-MMF). Post-COVID DTS patients (n = 16) were treated with metoprolol. 3) A third, undifferentiated group presented with mild respiratory complaints and normal spirometry (n = 17) and was followed in clinic without initiation of a specific treatment. RESULTS In treated post-COVID ILD patients, mean oxygen requirements at rest (1.96 ± 1.79 L/NC) decreased to 0.89 ± 1.29 L/NC at 6 months follow-up, p = 0.005. In patients with post-COVID DTS, mean heart rate at rest decreased (98 ± 15 bpm to 79 ± 11 bpm) at 6 months follow-up, p = 0.023. 60 % of patients reported an improvement in exertional dyspnea. CONCLUSIONS Our descriptive study presents a single center outpatient COVID-19 clinic experience. We encountered 3 post-COVID sub-syndromes and describe their treatments: post-COVID interstitial lung disease [ILD] treated with a novel regimen of MMF and steroids, post COVID dyspnea-tachycardia syndrome [DTS] treated with metoprolol, and a third subgroup with mild undifferentiated symptoms without specific treatment.
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Affiliation(s)
- Fernando Torres
- The University of Texas Southwestern Medical Center, United States
| | - Christine Shedd
- The University of Texas Southwestern Medical Center, United States.
| | - Vaidehi Kaza
- The University of Texas Southwestern Medical Center, United States
| | | | - Amit Banga
- The University of Texas Southwestern Medical Center, United States
| | - Manish R Mohanka
- The University of Texas Southwestern Medical Center, United States
| | - Nicholas Ladikos
- The University of Texas Southwestern Medical Center, United States
| | - Marniker Wijesinha
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, United States
| | - Luke D Mahan
- The University of Texas Southwestern Medical Center, United States
| | - Adrian Lawrence
- The University of Texas Southwestern Medical Center, United States
| | - John Joerns
- The University of Texas Southwestern Medical Center, United States
| | - Lance Terada
- The University of Texas Southwestern Medical Center, United States
| | - Irina Timofte
- The University of Texas Southwestern Medical Center, United States
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Chikopela T, Mwesigwa N, Masenga SK, Kirabo A, Shibao CA. The Interplay of HIV and Long COVID in Sub-Saharan Africa: Mechanisms of Endothelial Dysfunction. Curr Cardiol Rep 2024; 26:859-871. [PMID: 38958890 DOI: 10.1007/s11886-024-02087-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/23/2024] [Indexed: 07/04/2024]
Abstract
PURPOSE OF REVIEW Long COVID affects approximately 5 million people in Africa. This disease is characterized by persistent symptoms or new onset of symptoms after an acute SARS-CoV-2 infection. Specifically, the most common symptoms include a range of cardiovascular problems such as chest pain, orthostatic intolerance, tachycardia, syncope, and uncontrolled hypertension. Importantly, these conditions appear to have endothelial dysfunction as the common denominator, which is often due to impaired nitric oxide (NO) mechanisms. This review discusses the role of mechanisms contributing to endothelial dysfunction in Long COVID, particularly in people living with HIV. RECENT FINDINGS Recent studies have reported that increased inflammation and oxidative stress, frequently observed in Long COVID, may contribute to NO dysfunction, ultimately leading to decreased vascular reactivity. These mechanisms have also been reported in people living with HIV. In regions like Africa, where HIV infection is still a major public health challenge with a prevalence of approximately 26 million people in 2022. Specifically, endothelial dysfunction has been reported as a major mechanism that appears to contribute to cardiovascular diseases and the intersection with Long COVID mechanisms is of particular concern. Further, it is well established that this population is more likely to develop Long COVID following infection with SARS-CoV-2. Therefore, concomitant infection with SARS-CoV-2 may lead to accelerated cardiovascular disease. We outline the details of the worsening health problems caused by Long COVID, which exacerbate pre-existing conditions such as endothelial dysfunction. The overlapping mechanisms of HIV and SARS-CoV-2, particularly the prolonged inflammatory response and chronic hypoxia, may increase susceptibility to Long COVID. Addressing these overlapping health issues is critical as it provides clinical entry points for interventions that could improve and enhance outcomes and quality of life for those affected by both HIV and Long COVID in the region.
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Affiliation(s)
- Theresa Chikopela
- Department of Human Physiology, Faculty of Medicine, Lusaka Apex Medical University, Lusaka, Zambia
| | - Naome Mwesigwa
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, 37332-0615, USA
| | - Sepiso K Masenga
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone, Zambia
| | - Annet Kirabo
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, 37332-0615, USA
| | - Cyndya A Shibao
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, 37332-0615, USA.
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Dai C, Huang YH, Jiang M. Prolonged Gastrointestinal Manifestations After Recovery From COVID-19. Clin Gastroenterol Hepatol 2024; 22:1961-1962. [PMID: 38278194 DOI: 10.1016/j.cgh.2023.12.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/28/2024]
Affiliation(s)
- Cong Dai
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang City, Liaoning Province, China
| | - Yu-Hong Huang
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang City, Liaoning Province, China
| | - Min Jiang
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang City, Liaoning Province, China
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Morrow AK, Villatoro C, Kokorelis C, Rowe PC, Malone LA. Orthostatic Intolerance in Children With Long COVID Utilizing a 10-Minute Passive Standing Test. Clin Pediatr (Phila) 2024:99228241272053. [PMID: 39123312 DOI: 10.1177/00099228241272053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/12/2024]
Abstract
Despite there being a wide variety of symptoms reported in pediatric long COVID, one condition that has become increasingly recognized is orthostatic intolerance (OI), which can cause significant morbidity, limiting activities of daily living. This study examines rates of OI in 92 children with long COVID who underwent a bedside passive standing test in a pediatric post-COVID-19 rehabilitation clinic. Seventy-one percent met criteria for an orthostatic condition, including postural orthostatic tachycardia syndrome (POTS), orthostatic tachycardia (OT), classic orthostatic hypotension (OH), delayed OH, and orthostatic hypertension. Our findings suggest that OI is common in pediatric long COVID, necessitating appropriate clinical screening and treatment.
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Affiliation(s)
- Amanda K Morrow
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Kennedy Krieger Institute, Baltimore, MD, USA
| | | | - Christina Kokorelis
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Kennedy Krieger Institute, Baltimore, MD, USA
| | - Peter C Rowe
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Laura A Malone
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Kennedy Krieger Institute, Baltimore, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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7
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McMillan P, Turner AJ, Uhal BD. Mechanisms of Gut-Related Viral Persistence in Long COVID. Viruses 2024; 16:1266. [PMID: 39205240 PMCID: PMC11360392 DOI: 10.3390/v16081266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/31/2024] [Accepted: 08/03/2024] [Indexed: 09/04/2024] Open
Abstract
Long COVID (post-acute sequelae of COVID-19-PASC) is a consequence of infection by SARS-CoV-2 that continues to disrupt the well-being of millions of affected individuals for many months beyond their first infection. While the exact mechanisms underlying PASC remain to be defined, hypotheses regarding the pathogenesis of long COVID are varied and include (but are not limited to) dysregulated local or systemic inflammatory responses, autoimmune mechanisms, viral-induced hormonal imbalances, skeletal muscle abnormalities, complement dysregulation, novel abzymes, and long-term persistence of virus and/or fragments of viral RNA or proteins. This review article is based on a comprehensive review of the wide range of symptoms most often observed in long COVID and an attempt to integrate that information into a plausible hypothesis for the pathogenesis of PASC. In particular, it is proposed that long-term dysregulation of the gut in response to viral persistence could lead to the myriad of symptoms observed in PASC.
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Affiliation(s)
| | - Anthony J. Turner
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK;
| | - Bruce D. Uhal
- Department of Physiology, Michigan State University, East Lansing, MI 48824, USA
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Castiglioni P, Rampichini S, Corti CG, Mannarino S, Zuccotti G, Calcaterra V, Formenti D, Moriondo A, Maggioni MA, Esposito F, Merati G. COVID-19-Associated Multisystem Inflammatory Syndrome in Children and Cardiovascular Autonomic Control: A Prospective Cohort Study Nine Months after SARS-CoV-2 Infection. J Clin Med 2024; 13:4163. [PMID: 39064202 PMCID: PMC11278032 DOI: 10.3390/jcm13144163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/11/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Background: Multisystem Inflammatory Syndrome in Children (MIS-C) has emerged as a severe pediatric complication during the SARS-CoV-2 pandemic, with potential long-term cardiovascular repercussions. We hypothesized that heart rate and blood pressure control at rest and during postural maneuvers in MIS-C patients, months after the remission of the inflammatory syndrome, may reveal long-term autonomic dysfunctions. Methods: We assessed 17 MIS-C patients (13 males; 11.9 ± 2.6 years, m ± SD) 9 months after acute infection and 18 age- (12.5 ± 2.1 years) and sex- (13 males) matched controls. Heart rate and blood pressure variability, baroreflex function, and hemodynamic parameters were analyzed in supine and standing postures. Results: MIS-C patients exhibited reduced heart rate variability, particularly in parasympathetic parameters during standing (pNN50+: 6.1 ± 6.4% in controls, 2.5 ± 3.9% in MIS-C; RMSSD: 34 ± 19 ms in controls, 21 ± 14 ms in MIS-C, p < 0.05), with no interaction between case and posture. Blood pressure variability and baroreflex sensitivity did not differ between groups except for the high-frequency power in systolic blood pressure (3.3 ± 1.2 mmHg2 in controls, 1.8 ± 1.2 mmHg2 in MIS-C, p < 0.05). The MIS-C group also showed lower diastolic pressure-time indices (DPTI) and systolic pressure-time indices (SPTI), particularly in standing (DPTI: 36.2 ± 9.4 mmHg·s in controls, 29.4 ± 6.2 mmHg·s in MIS-C; SPTI: 26.5 ± 4.3 mmHg·s in controls, 23.9 ± 2.4 mmHg·s in MIS-C, p < 0.05). Conclusions: Altered cardiovascular autonomic control may persist in MIS-C patients with, however, compensatory mechanisms that may help maintain cardiovascular homeostasis during light autonomic challenges, such as postural maneuvers. These results highlight the importance of assessing long-term cardiovascular autonomic control in children with MIS-C to possibly identify residual cardiovascular risks and inform targeted interventions and rehabilitation protocols.
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Affiliation(s)
- Paolo Castiglioni
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, 21100 Varese, Italy; (P.C.); (D.F.); (G.M.)
- IRCCS Fondazione don Carlo Gnocchi, 20148 Milan, Italy
| | - Susanna Rampichini
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, 20033 Milan, Italy; (M.A.M.); (F.E.)
| | - Carla Giuseppina Corti
- Department of Cardio-Thoracic-Vascular Diseases, Foundation IRCCS Cà Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Savina Mannarino
- Pediatric Department, Buzzi Children’s Hospital, 20154 Milan, Italy; (S.M.); (G.Z.)
| | - Gianvincenzo Zuccotti
- Pediatric Department, Buzzi Children’s Hospital, 20154 Milan, Italy; (S.M.); (G.Z.)
- Department of Biomedical and Clinical Sciences “L. Sacco”, Università degli Studi di Milano, 20157 Milan, Italy;
| | - Valeria Calcaterra
- Department of Biomedical and Clinical Sciences “L. Sacco”, Università degli Studi di Milano, 20157 Milan, Italy;
- Department of Internal Medicine and Therapeutics, Università degli Sudi di Pavia, 27100 Pavia, Italy
| | - Damiano Formenti
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, 21100 Varese, Italy; (P.C.); (D.F.); (G.M.)
| | - Andrea Moriondo
- Department of Medicine and Technological Innovation (DIMIT), University of Insubria, 21100 Varese, Italy;
| | - Martina Anna Maggioni
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, 20033 Milan, Italy; (M.A.M.); (F.E.)
- Charité—Universitätsmedizin Berlin, Institute of Physiology, Center for Space Medicine and Extreme Environments Berlin, 10117 Berlin, Germany
| | - Fabio Esposito
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, 20033 Milan, Italy; (M.A.M.); (F.E.)
| | - Giampiero Merati
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, 21100 Varese, Italy; (P.C.); (D.F.); (G.M.)
- IRCCS Fondazione don Carlo Gnocchi, 20148 Milan, Italy
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Donald J, Bilasy SE, Yang C, El-Shamy A. Exploring the Complexities of Long COVID. Viruses 2024; 16:1060. [PMID: 39066223 PMCID: PMC11281588 DOI: 10.3390/v16071060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/24/2024] [Accepted: 06/27/2024] [Indexed: 07/28/2024] Open
Abstract
Since the emergence of the SARS-CoV-2 virus in 2019, nearly 700 million COVID-19 cases and 7 million deaths have been reported globally. Despite most individuals recovering within four weeks, the Center for Disease Control (CDC) estimates that 7.5% to 41% develop post-acute infection syndrome (PAIS), known as 'Long COVID'. This review provides current statistics on Long COVID's prevalence, explores hypotheses concerning epidemiological factors, such as age, gender, comorbidities, initial COVID-19 severity, and vaccine interactions, and delves into potential mechanisms, including immune responses, viral persistence, and gut dysbiosis. Moreover, we conclude that women, advanced age, comorbidities, non-vaccination, and low socioeconomic status all appear to be risk factors. The reasons for these differences are still not fully understood and likely involve a complex relationship between social, genetic, hormonal, and other factors. Furthermore, individuals with Long COVID-19 seem more likely to endure economic hardship due to persistent symptoms. In summary, our findings further illustrate the multifaceted nature of Long COVID and underscore the importance of understanding the epidemiological factors and potential mechanisms needed to develop effective therapeutic strategies and interventions.
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Affiliation(s)
- Jackson Donald
- College of Graduate Studies, California Northstate University, 9700 West Taron Drive, Elk Grove, CA 95757, USA; (J.D.); (C.Y.)
| | - Shymaa E. Bilasy
- College of Dental Medicine, California Northstate University, 9700 West Taron Drive, Elk Grove, CA 95757, USA;
| | - Catherine Yang
- College of Graduate Studies, California Northstate University, 9700 West Taron Drive, Elk Grove, CA 95757, USA; (J.D.); (C.Y.)
| | - Ahmed El-Shamy
- College of Graduate Studies, California Northstate University, 9700 West Taron Drive, Elk Grove, CA 95757, USA; (J.D.); (C.Y.)
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Marks H. Invalidated and 'salty': an auto/biographical and theoretical review of the lived experiences of individuals with PoTS. FRONTIERS IN SOCIOLOGY 2024; 9:1283695. [PMID: 38912309 PMCID: PMC11191735 DOI: 10.3389/fsoc.2024.1283695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 05/08/2024] [Indexed: 06/25/2024]
Abstract
Postural orthostatic Tachycardia Syndrome (PoTS), sometimes also written as 'POTS', is a form of dysautonomia (dysfunction of the autonomic nervous system) and orthostatic intolerance (which causes symptoms to be worsened when standing). This paper explores the extant literature on the lived experiences of those living with PoTS in relation to interactions between patients and healthcare providers as well as interactions at the level of the individual between PoTSies and those around them. My title contains the word 'salty' because it can be used to describe the feeling of being frustrated, while also reflecting a specific dietary change recommended to many (but not all) PoTS patients when they are told to consume additional sodium to minimise symptoms. COVID-19 is thought to have led to an increased prevalence of PoTS so this topic is particularly relevant to contemporary discussions and debates. In this sociological article, I refer not only to existing research on the lived experiences of having PoTS but also that of other chronic illnesses when relevant. The following themes are explored through auto/biographical and theoretical analysis: Undiagnosed and Invalidated; (In)Visible; Impacts of Diagnosis; Recovery and Expectations; Community. Reflecting auto/biographically, I have included analysis of interactions related to my lived experiences of presyncope, COVID-19 and dysautonomia, as I have been diagnosed with PoTS myself, which is thought to have been significantly exacerbated by the COVID-19 virus. This research is sociological, rather than medical or psychological, and conclusions are drawn about what is known so far about the lived experiences of living with PoTS, as well as discussion about what remains unknown, as there is currently a paucity of research on the lived experiences of individuals with PoTS and its comorbidities.
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Affiliation(s)
- Harriet Marks
- School of Society and Culture (Faculty of Arts, Humanities and Business), University of Plymouth, Plymouth, United Kingdom
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11
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Fedorowski A, Fanciulli A, Raj SR, Sheldon R, Shibao CA, Sutton R. Cardiovascular autonomic dysfunction in post-COVID-19 syndrome: a major health-care burden. Nat Rev Cardiol 2024; 21:379-395. [PMID: 38163814 DOI: 10.1038/s41569-023-00962-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/13/2023] [Indexed: 01/03/2024]
Abstract
Cardiovascular autonomic dysfunction (CVAD) is a malfunction of the cardiovascular system caused by deranged autonomic control of circulatory homeostasis. CVAD is an important component of post-COVID-19 syndrome, also termed long COVID, and might affect one-third of highly symptomatic patients with COVID-19. The effects of CVAD can be seen at both the whole-body level, with impairment of heart rate and blood pressure control, and in specific body regions, typically manifesting as microvascular dysfunction. Many severely affected patients with long COVID meet the diagnostic criteria for two common presentations of CVAD: postural orthostatic tachycardia syndrome and inappropriate sinus tachycardia. CVAD can also manifest as disorders associated with hypotension, such as orthostatic or postprandial hypotension, and recurrent reflex syncope. Advances in research, accelerated by the COVID-19 pandemic, have identified new potential pathophysiological mechanisms, diagnostic methods and therapeutic targets in CVAD. For clinicians who daily see patients with CVAD, knowledge of its symptomatology, detection and appropriate management is more important than ever. In this Review, we define CVAD and its major forms that are encountered in post-COVID-19 syndrome, describe possible CVAD aetiologies, and discuss how CVAD, as a component of post-COVID-19 syndrome, can be diagnosed and managed. Moreover, we outline directions for future research to discover more efficient ways to cope with this prevalent and long-lasting condition.
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Affiliation(s)
- Artur Fedorowski
- Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
- Department of Medicine, Karolinska Institute, Stockholm, Sweden.
- Department of Clinical Sciences, Lund University, Malmö, Sweden.
| | | | - Satish R Raj
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Autonomic Dysfunction Center, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Robert Sheldon
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Cyndya A Shibao
- Autonomic Dysfunction Center, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Richard Sutton
- Department of Clinical Sciences, Lund University, Malmö, Sweden
- Department of Cardiology, Hammersmith Hospital, National Heart & Lung Institute, Imperial College, London, UK
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12
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Teodorescu DL, Chen PS. Reply to the Editor-Postural orthostatic tachycardia syndrome after COVID-19 vaccination. Heart Rhythm 2024; 21:703-704. [PMID: 38360254 DOI: 10.1016/j.hrthm.2024.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024]
Affiliation(s)
- Debbie Lin Teodorescu
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Peng-Sheng Chen
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California.
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13
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Daungsupawong H, Wiwanitkit V. To the Editor-COVID-19 vaccine and postural orthostatic tachycardia syndrome. Heart Rhythm 2024; 21:702-703. [PMID: 38360253 DOI: 10.1016/j.hrthm.2024.01.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 02/17/2024]
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14
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Pena C, Moustafa A, Mohamed AR, Grubb B. Autoimmunity in Syndromes of Orthostatic Intolerance: An Updated Review. J Pers Med 2024; 14:435. [PMID: 38673062 PMCID: PMC11051445 DOI: 10.3390/jpm14040435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Orthostatic intolerance is a broad term that represents a spectrum of dysautonomic disorders, including postural orthostatic tachycardia syndrome (POTS) and orthostatic hypotension (OH), as manifestations of severe autonomic failure. While the etiology of orthostatic intolerance has not yet fully been uncovered, it has been associated with multiple underlying pathological processes, including peripheral neuropathy, altered renin-aldosterone levels, hypovolemia, and autoimmune processes. Studies have implicated adrenergic, cholinergic, and angiotensin II type I autoantibodies in the pathogenesis of orthostatic intolerance. Several case series have demonstrated that immunomodulation therapy resulted in favorable outcomes, improving autonomic symptoms in POTS and OH. In this review, we highlight the contemporary literature detailing the association of autoimmunity with POTS and OH.
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Affiliation(s)
- Clarissa Pena
- Department of Internal Medicine, University of Toledo, Toledo, OH 43614, USA;
| | - Abdelmoniem Moustafa
- Division of Cardiovascular Medicine, University of Toledo, Toledo, OH 43614, USA; (A.M.); (B.G.)
| | - Abdel-Rhman Mohamed
- Department of Internal Medicine, University of Toledo, Toledo, OH 43614, USA;
| | - Blair Grubb
- Division of Cardiovascular Medicine, University of Toledo, Toledo, OH 43614, USA; (A.M.); (B.G.)
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15
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Tanking C, Lakkananurak C, Srisakvarakul C, Jitpreeda A, Threechod K, Sukitpunyaroj D. Postural orthostatic tachycardia syndrome and other autonomic dysfunctions following COVID-19: Incidence, characteristics, and associated factors. J Arrhythm 2024; 40:230-236. [PMID: 38586859 PMCID: PMC10995586 DOI: 10.1002/joa3.13001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/12/2024] [Accepted: 01/28/2024] [Indexed: 04/09/2024] Open
Abstract
Background Long-COVID syndrome has become a new health concern. Many major clinical centers have experienced more patients with symptoms suggestive of autonomic dysfunction, especially postural orthostatic tachycardia syndrome (POTS) following COVID-19. However, there is a lack of information regarding the incidence and associated factors in Asian population. Methods A retro-prospective study was conducted to evaluate patients with symptoms suggestive of POTS or other autonomic dysfunctions. These symptoms last at least 3 months after PCR-proven COVID-19. Exclusion criteria were age under 18 years old, pregnancy, and pre-COVID-19 autonomic dysfunction symptoms. Patients with a symptom severity score greater than two were assessed with blood tests, 24-h Holter, 24-h ambulatory blood pressure, echocardiogram, and head-up tilt table (HUTT). Results Seven hundred ninety-three patients were interviewed at 146 ± 37 days after COVID-19. The majority of patients were middle-aged females (53%). Of those, 15 patients had the symptom severity score greater than 2. Out of those 15 patients, 12 had positive HUTT (1 demonstrating POTS, 10 neurocardiogenic syncope, and 1 orthostatic hypotension). Among those with positive HUTT patients, C-reactive protein (CRP) was significantly higher (OR 1.01; p-value 0.041). Fatigue and dyspnea on exertion were the two most complaint symptoms. Conclusions This study shows the incidence of autonomic dysfunction and POTS is 1.5% (12/793) and 0.1% POTS (1/793), respectively, in a primary care setting (among general post-COVID-19 patients). The most common symptoms for these patients were fatigue and dyspnea.
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16
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Tryfonos A, Pourhamidi K, Jörnåker G, Engvall M, Eriksson L, Elhallos S, Asplund N, Mandić M, Sundblad P, Sepic A, Rullman E, Hyllienmark L, Rundqvist H, Lundberg TR, Gustafsson T. Functional Limitations and Exercise Intolerance in Patients With Post-COVID Condition: A Randomized Crossover Clinical Trial. JAMA Netw Open 2024; 7:e244386. [PMID: 38573638 PMCID: PMC11192186 DOI: 10.1001/jamanetworkopen.2024.4386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/02/2024] [Indexed: 04/05/2024] Open
Abstract
Importance Many patients with post-COVID condition (PCC) experience persistent fatigue, muscle pain, and cognitive problems that worsen after exertion (referred to as postexertional malaise). Recommendations currently advise against exercise in this population to prevent symptom worsening; however, prolonged inactivity is associated with risk of long-term health deterioration. Objective To assess postexertional symptoms in patients with PCC after exercise compared with control participants and to comprehensively investigate the physiologic mechanisms underlying PCC. Design, Setting, and Participants In this randomized crossover clinical trial, nonhospitalized patients without concomitant diseases and with persistent (≥3 months) symptoms, including postexertional malaise, after SARS-CoV-2 infection were recruited in Sweden from September 2022 to July 2023. Age- and sex-matched control participants were also recruited. Interventions After comprehensive physiologic characterization, participants completed 3 exercise trials (high-intensity interval training [HIIT], moderate-intensity continuous training [MICT], and strength training [ST]) in a randomized order. Symptoms were reported at baseline, immediately after exercise, and 48 hours after exercise. Main Outcomes and Measures The primary outcome was between-group differences in changes in fatigue symptoms from baseline to 48 hours after exercise, assessed via the visual analog scale (VAS). Questionnaires, cardiopulmonary exercise testing, inflammatory markers, and physiologic characterization provided information on the physiologic function of patients with PCC. Results Thirty-one patients with PCC (mean [SD] age, 46.6 [10.0] years; 24 [77%] women) and 31 healthy control participants (mean [SD] age, 47.3 [8.9] years; 23 [74%] women) were included. Patients with PCC reported more symptoms than controls at all time points. However, there was no difference between the groups in the worsening of fatigue in response to the different exercises (mean [SD] VAS ranks for HIIT: PCC, 29.3 [19.5]; controls, 28.7 [11.4]; P = .08; MICT: PCC, 31.2 [17.0]; controls, 24.6 [11.7]; P = .09; ST: PCC, 31.0 [19.7]; controls, 28.1 [12.2]; P = .49). Patients with PCC had greater exacerbation of muscle pain after HIIT (mean [SD] VAS ranks, 33.4 [17.7] vs 25.0 [11.3]; P = .04) and reported more concentration difficulties after MICT (mean [SD] VAS ranks, 33.0 [17.1] vs 23.3 [10.6]; P = .03) compared with controls. At baseline, patients with PCC showed preserved lung and heart function but had a 21% lower peak volume of oxygen consumption (mean difference: -6.8 mL/kg/min; 95% CI, -10.7 to -2.9 mL/kg/min; P < .001) and less isometric knee extension muscle strength (mean difference: -37 Nm; 95% CI, -67 to -7 Nm; P = .02) compared with controls. Patients with PCC spent 43% less time on moderate to vigorous physical activity (mean difference, -26.5 minutes/d; 95% CI, -42.0 to -11.1 minutes/d; P = .001). Of note, 4 patients with PCC (13%) had postural orthostatic tachycardia, and 18 of 29 (62%) showed signs of myopathy as determined by neurophysiologic testing. Conclusions and Relevance In this study, nonhospitalized patients with PCC generally tolerated exercise with preserved cardiovascular function but showed lower aerobic capacity and less muscle strength than the control group. They also showed signs of postural orthostatic tachycardia and myopathy. The findings suggest cautious exercise adoption could be recommended to prevent further skeletal muscle deconditioning and health impairment in patients with PCC. Trial Registration ClinicalTrials.gov Identifier: NCT05445830.
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Affiliation(s)
- Andrea Tryfonos
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Kaveh Pourhamidi
- Department of Clinical Neurophysiology, Karolinska University Hospital, Stockholm, Sweden
| | - Gustav Jörnåker
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Martin Engvall
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Lisa Eriksson
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Sara Elhallos
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Nicole Asplund
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Mirko Mandić
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Patrik Sundblad
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Atif Sepic
- Department of Clinical Neurophysiology, Karolinska University Hospital, Stockholm, Sweden
| | - Eric Rullman
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Hyllienmark
- Department of Clinical Neurophysiology, Karolinska University Hospital, Stockholm, Sweden
| | - Helene Rundqvist
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Tommy R. Lundberg
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Thomas Gustafsson
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
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17
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Cui YX, Du JB, Jin HF. Insights into postural orthostatic tachycardia syndrome after COVID-19 in pediatric patients. World J Pediatr 2024; 20:201-207. [PMID: 38363488 DOI: 10.1007/s12519-024-00796-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/02/2024] [Indexed: 02/17/2024]
Affiliation(s)
- Ya-Xi Cui
- Department of Pediatrics, Peking University First Hospital, No.1 Xi-an Men Street, West District, Beijing 100034, China
| | - Jun-Bao Du
- Department of Pediatrics, Peking University First Hospital, No.1 Xi-an Men Street, West District, Beijing 100034, China.
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China.
| | - Hong-Fang Jin
- Department of Pediatrics, Peking University First Hospital, No.1 Xi-an Men Street, West District, Beijing 100034, China.
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18
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Lee C, Greenwood DC, Master H, Balasundaram K, Williams P, Scott JT, Wood C, Cooper R, Darbyshire JL, Gonzalez AE, Davies HE, Osborne T, Corrado J, Iftekhar N, Rogers N, Delaney B, Greenhalgh T, Sivan M. Prevalence of orthostatic intolerance in long covid clinic patients and healthy volunteers: A multicenter study. J Med Virol 2024; 96:e29486. [PMID: 38456315 DOI: 10.1002/jmv.29486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/29/2024] [Accepted: 02/13/2024] [Indexed: 03/09/2024]
Abstract
Orthostatic intolerance (OI), including postural orthostatic tachycardia syndrome (PoTS) and orthostatic hypotension (OH), are often reported in long covid, but published studies are small with inconsistent results. We sought to estimate the prevalence of objective OI in patients attending long covid clinics and healthy volunteers and associations with OI symptoms and comorbidities. Participants with a diagnosis of long covid were recruited from eight UK long covid clinics, and healthy volunteers from general population. All undertook standardized National Aeronautics and Space Administration Lean Test (NLT). Participants' history of typical OI symptoms (e.g., dizziness, palpitations) before and during the NLT were recorded. Two hundred seventy-seven long covid patients and 50 frequency-matched healthy volunteers were tested. Healthy volunteers had no history of OI symptoms or symptoms during NLT or PoTS, 10% had asymptomatic OH. One hundred thirty (47%) long covid patients had previous history of OI symptoms and 144 (52%) developed symptoms during the NLT. Forty-one (15%) had an abnormal NLT, 20 (7%) met criteria for PoTS, and 21 (8%) had OH. Of patients with an abnormal NLT, 45% had no prior symptoms of OI. Relaxing the diagnostic thresholds for PoTS from two consecutive abnormal readings to one abnormal reading during the NLT, resulted in 11% of long covid participants (an additional 4%) meeting criteria for PoTS, but not in healthy volunteers. More than half of long covid patients experienced OI symptoms during NLT and more than one in 10 patients met the criteria for either PoTS or OH, half of whom did not report previous typical OI symptoms. We therefore recommend all patients attending long covid clinics are offered an NLT and appropriate management commenced.
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Affiliation(s)
- Cassie Lee
- Imperial College Healthcare NHS Trust, London, UK
| | | | - Harsha Master
- Covid Assessment and Rehabilitation Service, Hertfordshire Community NHS Trust, Welwyn Garden City, UK
| | - Kumaran Balasundaram
- NIHR Leicester Biomedical Research Centre, Respiratory & Infection Theme, Glenfield Hospital, Leicester, UK
| | - Paul Williams
- Covid Assessment and Rehabilitation Service, Hertfordshire Community NHS Trust, Welwyn Garden City, UK
| | - Janet T Scott
- Development and Innovation Department, NHS Highlands, Inverness, UK
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - Conor Wood
- Birmingham Community Healthcare, Birmingham, UK
| | - Rowena Cooper
- Development and Innovation Department, NHS Highlands, Inverness, UK
| | - Julie L Darbyshire
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | | | - Helen E Davies
- Department of Respiratory Medicine, University Hospital of Wales, Cardiff, UK
| | - Thomas Osborne
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, UK
| | - Joanna Corrado
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, UK
| | - Nafi Iftekhar
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, UK
| | | | - Brendan Delaney
- Department of Surgery & Cancer, Imperial College, Faculty of Medicine, London, UK
| | - Trish Greenhalgh
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Manoj Sivan
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, UK
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19
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Goldstein DS. Post-COVID dysautonomias: what we know and (mainly) what we don't know. Nat Rev Neurol 2024; 20:99-113. [PMID: 38212633 DOI: 10.1038/s41582-023-00917-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2023] [Indexed: 01/13/2024]
Abstract
Following on from the COVID-19 pandemic is another worldwide public health challenge that is referred to variously as long COVID, post-COVID syndrome or post-acute sequelae of SARS-CoV-2 infection (PASC). PASC comes in many forms and affects all body organs. This heterogeneous presentation suggests involvement of the autonomic nervous system (ANS), which has numerous roles in the maintenance of homeostasis and coordination of responses to various stressors. Thus far, studies of ANS dysregulation in people with PASC have been largely observational and descriptive, based on symptom inventories or objective but indirect measures of cardiovascular function, and have paid little attention to the adrenomedullary, hormonal and enteric nervous components of the ANS. Such investigations do not consider the syndromic nature of autonomic dysfunction. This Review provides an update on the literature relating to ANS abnormalities in people with post-COVID syndrome and presents a theoretical perspective on how the ANS might participate in common features of PASC.
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Affiliation(s)
- David S Goldstein
- Division of Intramural Research, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.
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20
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Wang J, Patel D, Robinson S, Rynarzewska A, Abidoye O. Evaluation of the Existence of Post-COVID-19 Tachycardia in a Community Healthcare System. Cardiol Res 2024; 15:47-55. [PMID: 38464711 PMCID: PMC10923255 DOI: 10.14740/cr1604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/31/2024] [Indexed: 03/12/2024] Open
Abstract
Background Post-coronavirus disease 2019 (COVID-19) syndrome derives from lingering symptoms after an acute COVID-19 infection. Palpitation was one of the most common symptoms of post-COVID-19 syndrome that correlated with objective data such as persisting sinus tachycardia; but to our best knowledge, there is a scarcity of research regarding the association of COVID-19 and sinus tachycardia in the post-acute setting. Therefore, the purpose was to identify if there is an association between COVID-19 infection and sinus tachycardia in the post-acute phase, namely post-COVID-19 tachycardia (PCT) other than inappropriate sinus tachycardia (IST) and postural orthostatic tachycardia syndrome (POTS). Methods This retrospective observational study entails 1,425 patients admitted for COVID-19 infection with the interest in finding an association with PCT. The prevalence of PCT was evaluated using descriptive statistics, predictions of patient characteristics and comorbidities were identified using multinomial logistic regression, and associations between patient comorbidities and characteristics were evaluated with corresponding Pearson Chi-square test and post hoc tests Phi and Cramer's V. Results The percentage of patients with PCT in our sample of interest was an average of 28.18%. There was a strong association of PCT with patients of age group less than 65 years. Other clinical characteristics, such as shorter length of stay, unknown smoking status, and patients with commercial type insurance, had significant association with PCT. COVID-19 severity categorized as "less severe", readmission rates within 30 days, and patients with less comorbidities were more likely to be associated with PCT. Conclusions PCT is likely a separate entity from IST and POTS, and an important entity under the umbrella of post-COVID-19 syndrome. It warrants further studies to elucidate the underlying pathophysiology and to confirm its presence as a distinct entity.
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Affiliation(s)
- Jifeng Wang
- Internal Medicine Department, Northeast Georgia Medical Center, GME, Gainesville, GA, USA
| | - Dhaval Patel
- Internal Medicine Department, Northeast Georgia Medical Center, GME, Gainesville, GA, USA
| | - Shane Robinson
- GME Research, Northeast Georgia Medical Center, Gainesville, GA, USA
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21
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Kell DB, Khan MA, Kane B, Lip GYH, Pretorius E. Possible Role of Fibrinaloid Microclots in Postural Orthostatic Tachycardia Syndrome (POTS): Focus on Long COVID. J Pers Med 2024; 14:170. [PMID: 38392604 PMCID: PMC10890060 DOI: 10.3390/jpm14020170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/16/2024] [Accepted: 01/27/2024] [Indexed: 02/24/2024] Open
Abstract
Postural orthostatic tachycardia syndrome (POTS) is a common accompaniment of a variety of chronic, inflammatory diseases, including long COVID, as are small, insoluble, 'fibrinaloid' microclots. We here develop the argument, with accompanying evidence, that fibrinaloid microclots, through their ability to block the flow of blood through microcapillaries and thus cause tissue hypoxia, are not simply correlated with but in fact, by preceding it, may be a chief intermediary cause of POTS, in which tachycardia is simply the body's exaggerated 'physiological' response to hypoxia. Similar reasoning accounts for the symptoms bundled under the term 'fatigue'. Amyloids are known to be membrane disruptors, and when their targets are nerve membranes, this can explain neurotoxicity and hence the autonomic nervous system dysfunction that contributes to POTS. Taken together as a system view, we indicate that fibrinaloid microclots can serve to link POTS and fatigue in long COVID in a manner that is at once both mechanistic and explanatory. This has clear implications for the treatment of such diseases.
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Affiliation(s)
- Douglas B Kell
- Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Crown St, Liverpool L69 7ZB, UK
- The Novo Nordisk Foundation Centre for Biosustainability, Building 220, Chemitorvet 200, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
| | - Muhammed Asad Khan
- Directorate of Respiratory Medicine, Manchester University Hospitals, Wythenshawe Hospital, Manchester M23 9LT, UK
| | - Binita Kane
- Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Crown St, Liverpool L69 7ZB, UK
- Manchester University Foundation Trust and School of Biological Sciences, University of Manchester, Manchester M13 9PL, UK
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool L14 3PE, UK
- Danish Center for Health Services Research, Department of Clinical Medicine, Aalborg University, 9220 Aalborg, Denmark
| | - Etheresia Pretorius
- Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Crown St, Liverpool L69 7ZB, UK
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
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22
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Habeichi NJ, Amin G, Lakkis B, Kataya R, Mericskay M, Booz GW, Zouein FA. Potential Alternative Receptors for SARS-CoV-2-Induced Kidney Damage: TLR-4, KIM-1/TIM-1, and CD147. FRONT BIOSCI-LANDMRK 2024; 29:8. [PMID: 38287815 PMCID: PMC10924798 DOI: 10.31083/j.fbl2901008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 01/31/2024]
Abstract
Kidney damage in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can occur even in patients with no underlying kidney disease. Signs of kidney problems can progress to a state that demands dialysis and hampering recovery. Although not without controversy, emerging evidence implicates direct infectivity of SARS-CoV-2 in the kidney. At the early stage of the pandemic, consideration was mainly on the well-recognized angiotensin-converting enzyme 2 (ACE2) receptor as being the site for viral interaction and subsequent cellular internalization. Despite the abundance of ACE2 receptors in the kidneys, researchers have expanded beyond ACE2 and identified novel viral entry pathways that could be advantageously explored as therapeutic targets. This review presents the potential involvement of toll-like receptor 4 (TLR-4), kidney injury molecule-1/T cell immunoglobulin mucin domain 1 (KIM-1/TIM-1), and cluster of differentiation 147 (CD147) in SARS-CoV-2-associated renal damage. In this context, we address the unresolved issues surrounding SARS-CoV-2 renal infectivity.
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Affiliation(s)
- Nada J. Habeichi
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
- Department of Signaling and Cardiovascular Pathophysiology, University Paris Saclay, INSERM UMR_1180, 91400 Orsay, France
- MatriceLab Innove Laboratory, Immeuble Les Gemeaux, 94000 Creteil, France
| | - Ghadir Amin
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Bachir Lakkis
- Division of Cardiology, Department of Internal Medicine, American University of Beirut Medical Center, 1107-2020 Beirut, Lebanon
| | - Rayane Kataya
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
| | - Mathias Mericskay
- Department of Signaling and Cardiovascular Pathophysiology, University Paris Saclay, INSERM UMR_1180, 91400 Orsay, France
| | - George W. Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Fouad A. Zouein
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
- Department of Signaling and Cardiovascular Pathophysiology, University Paris Saclay, INSERM UMR_1180, 91400 Orsay, France
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
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23
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Tsuchida T, Ishibashi Y, Inoue Y, Ishizuka K, Katayama K, Hirose M, Nakagama Y, Kido Y, Akashi Y, Otsubo T, Matsuda T, Ohira Y. Treatment of long COVID complicated by postural orthostatic tachycardia syndrome-Case series research. J Gen Fam Med 2024; 25:53-61. [PMID: 38240001 PMCID: PMC10792321 DOI: 10.1002/jgf2.670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/26/2023] [Accepted: 11/29/2023] [Indexed: 01/22/2024] Open
Abstract
Background Coronavirus disease 2019 (COVID-19) sequelae, also known as long COVID, can present with various symptoms. Among these symptoms, autonomic dysregulation, particularly postural orthostatic tachycardia syndrome (POTS), should be evaluated. However, previous studies on the treatment of POTS complicated by COVID-19 are lacking. Therefore, this study aimed to investigate the treatment course of long COVID complicated by POTS. Methods The medical records of patients who complained of fatigue and met the criteria for POTS diagnosis were reviewed. We evaluated the treatment days, methods and changes in fatigue score, changes in heart rate on the Schellong test, and social situation at the first and last visits. Results Thirty-two patients with long COVID complicated by POTS were followed up (16 males; median age: 28 years). The follow-up period was 159 days, and the interval between COVID-19 onset and initial hospital attendance was 97 days. Some patients responded to β-blocker therapy. Many patients had psychiatric symptoms that required psychiatric intervention and selective serotonin reuptake inhibitor prescription. Changes in heart rate, performance status, and employment/education status improved from the first to the last visit. These outcomes were believed to be because of the effects of various treatment interventions and spontaneous improvements. Conclusions Our study suggests that the condition of 94% of patients with POTS complicated by long COVID will improve within 159 days. Therefore, POTS evaluation should be considered when patients with long COVID complain of fatigue, and attention should be paid to psychological symptoms and the social context.
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Affiliation(s)
- Tomoya Tsuchida
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Yuki Ishibashi
- Department of CardiologySt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Yoko Inoue
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Kosuke Ishizuka
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Kohta Katayama
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Masanori Hirose
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Yu Nakagama
- Department of Virology & Parasitology, Graduate School of MedicineOsaka Metropolitan UniversityOsakaJapan
- Research Center for Infectious Disease Sciences, Graduate School of MedicineOsaka Metropolitan UniversityOsakaJapan
| | - Yasutoshi Kido
- Department of Virology & Parasitology, Graduate School of MedicineOsaka Metropolitan UniversityOsakaJapan
- Research Center for Infectious Disease Sciences, Graduate School of MedicineOsaka Metropolitan UniversityOsakaJapan
| | - Yoshihiro Akashi
- Department of CardiologySt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Takehito Otsubo
- Department of Gastroenterological and General SurgerySt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Takahide Matsuda
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
| | - Yoshiyuki Ohira
- Department of General Internal MedicineSt. Marianna University School of MedicineKawasakiKanagawaJapan
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24
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Teodorescu DL, Kote A, Reaso JN, Rosenberg C, Liu X, Kwan AC, Cheng S, Chen PS. Postural orthostatic tachycardia syndrome after COVID-19 vaccination. Heart Rhythm 2024; 21:74-81. [PMID: 38176772 PMCID: PMC10767226 DOI: 10.1016/j.hrthm.2023.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/13/2023] [Accepted: 09/11/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND There is an association between coronavirus disease 2019 (COVID-19) mRNA vaccination and the incidence or exacerbation of postural orthostatic tachycardia syndrome (POTS). OBJECTIVE The purpose of this study was to characterize patients reporting new or exacerbated POTS after receiving the mRNA COVID-19 vaccine. METHODS We prospectively collected data from sequential patients in a POTS clinic between July 2021 and June 2022 reporting new or exacerbated POTS symptoms after COVID-19 vaccination. Heart rate variability (HRV) and skin sympathetic nerve activity (SKNA) were compared against those of 24 healthy controls. RESULTS Ten patients (6 women and 4 men; age 41.5 ± 7.9 years) met inclusion criteria. Four patients had standing norepinephrine levels > 600 pg/mL. All patients had conditions that could raise POTS risk, including previous COVID-19 infection (N = 4), hypermobile Ehlers-Danlos syndrome (N = 6), mast cell activation syndrome (N = 6), and autoimmune (N = 7), cardiac (N = 7), neurological (N = 6), or gastrointestinal conditions (N = 4). HRV analysis indicated a lower ambulatory root mean square of successive differences (46.19 ±24 ms; P = .042) vs control (72.49 ± 40.8 ms). SKNA showed a reduced mean amplitude (0.97 ± 0.052 μV; P = .011) vs control (1.2 ± 0.31 μV) and burst amplitude (1.67 ± 0.16 μV; P = .018) vs control (4. 3 ± 4.3 μV). After 417.2 ± 131.4 days of follow-up, all patients reported improvement with the usual POTS care, although 2 with COVID-19 reinfection and 1 with small fiber neuropathy did have relapses of POTS symptoms. CONCLUSION All patients with postvaccination POTS had pre-existing conditions. There was no evidence of myocardial injuries or echocardiographic abnormalities. The decreased HRV suggests a sympathetic dominant state. Although all patients improved with guideline-directed care, there is a risk of relapse.
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Affiliation(s)
- Debbie Lin Teodorescu
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Anxhela Kote
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jewel N Reaso
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Carine Rosenberg
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Xiao Liu
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Alan C Kwan
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Susan Cheng
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Peng-Sheng Chen
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California.
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25
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BROCK MALCOLMV, BOSMANS FRANK. A MULTI-HIT MODEL OF LONG COVID PATHOPHYSIOLOGY: THE INTERACTION BETWEEN IMMUNE TRIGGERS AND NERVOUS SYSTEM SIGNALING. TRANSACTIONS OF THE AMERICAN CLINICAL AND CLIMATOLOGICAL ASSOCIATION 2024; 134:149-164. [PMID: 39135572 PMCID: PMC11316875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Early in the pandemic, clinicians recognized an overlap between Long COVID symptoms and dysautonomia, suggesting autonomic nervous system (ANS) dysfunction. Our clinical experience at Johns Hopkins with primary dysautonomia suggested heritability of sympathetic dysfunction, manifesting primarily as hyperhidrosis and as other dysautonomia symptoms. Whole exome sequencing revealed mutations in genes regulating electrical signaling in the nervous system, thus providing a genetic basis for the sympathetic overdrive observed. We hypothesize that dysautonomia in Long COVID requires two molecular hits: a genetic vulnerability to prime the ANS and a SARS-CoV-2 infection, as an immune trigger, to further disrupt ANS function resulting in increased sympathetic activity. Indeed, Long COVID patients show signs of chronic inflammation and autoimmunity. We have translated this two-hit concept to the clinic using ion channel inhibitors to target genetic susceptibility and immunomodulators to treat inflammation. This multi-hit hypothesis shows promise for managing Long COVID and merits further study.
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26
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da Silva ALG, Vieira LDP, Dias LS, Prestes CV, Back GD, Goulart CDL, Arena R, Borghi-Silva A, Trimer R. Impact of long COVID on the heart rate variability at rest and during deep breathing maneuver. Sci Rep 2023; 13:22695. [PMID: 38123689 PMCID: PMC10733257 DOI: 10.1038/s41598-023-50276-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 12/18/2023] [Indexed: 12/23/2023] Open
Abstract
While the majority of individuals with coronavirus disease 2019 (COVID-19) recover completely, a significant percentage experience persistent symptom, which has been characterized as Long COVID and may be associated with cardiac and autonomic dysfunction. We evaluated heart rate variability (HRV) at rest and during deep-breathing (M-RSA) in patients with Long COVID. Case-control design involved 21 patients with Long COVID and 20 controls; the HRV was evaluated (POLAR system) at rest in the supine position and during M-RSA and expressed in time domain and non-linear analysis. In the supine position we found a reduction HRV measures in Long COVID' patients compared to controls for: Mean_iRR (p < 0.001), STD_iRR (p < 0.001); STD_HR (p < 0.001); SD1 (p < 0.001); SD2 (p < 0.001); alpha2 (p < 0.001). In the M-RSA we found reduction Mean_iRR (p < 0.001), STD_iRR (p < 0.001), STD_HR (p < 0.001), rMSSD (p < 0.001), RR_tri-index (p < 0.001) in Long COVID' patients except for highest Mean_HR p < 0.001. In conclusion, Long COVID reduced HRV at rest and during deep breathing. These findings may imply impairment of cardiac autonomic control when symptoms of COVID-19 persist following initial recovery.
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Affiliation(s)
- Andréa Lúcia Gonçalves da Silva
- Department of Health Sciences, University of Santa Cruz do Sul, Rio Grande do Sul, Brazil.
- Nucleus of Research in Surveillance, Prevention and Rehabilitation in Cardiorespiratory Diseases, Rio Grande do Sul, Brazil.
| | - Luana Dos Passos Vieira
- Scientific Initiation Scholarship at Laboratory of Cardiorespiratory Rehabilitation, University of Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Luiza Scheffer Dias
- Scientific Initiation Scholarship at Laboratory of Cardiorespiratory Rehabilitation, University of Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Cecília Vieira Prestes
- Scientific Initiation Scholarship at Laboratory of Cardiorespiratory Rehabilitation, University of Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Guilherme Dionir Back
- Cardiopulmonary Physiotherapy Laboratory, Physiotherapy Department, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil
| | - Cassia da Luz Goulart
- Cardiopulmonary Physiotherapy Laboratory, Physiotherapy Department, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil
| | - Ross Arena
- Department of Physical Therapy, College of Applied Health Sciences, University of Illinois Chicago, Chicago, IL, USA
| | - Audrey Borghi-Silva
- Cardiopulmonary Physiotherapy Laboratory, Physiotherapy Department, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, Brazil
| | - Renata Trimer
- Department of Health Sciences, University of Santa Cruz do Sul, Rio Grande do Sul, Brazil
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27
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Hira R, Karalasingham K, Baker JR, Raj SR. Autonomic Manifestations of Long-COVID Syndrome. Curr Neurol Neurosci Rep 2023; 23:881-892. [PMID: 37947962 DOI: 10.1007/s11910-023-01320-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2023] [Indexed: 11/12/2023]
Abstract
PURPOSE OF REVIEW Long-COVID is a novel condition emerging from the COVID-19 pandemic. Long-COVID is characterized by symptoms commonly seen in autonomic disorders including fatigue, brain fog, light-headedness, and palpitations. This article will critically evaluate recent findings and studies on Long-COVID and its physiological autonomic manifestations. RECENT FINDINGS Studies have reported on the prevalence of different symptoms and autonomic disorders in Long-COVID cohorts. Autonomic nervous system function, including both the parasympathetic and sympathetic limbs, has been studied using different testing techniques in Long-COVID patients. While numerous mechanisms may contribute to Long-COVID autonomic pathophysiology, it is currently unclear which ones lead to a Long-COVID presentation. To date, studies have not tested treatment options for autonomic disorders in Long-COVID patients. Long-COVID is associated with autonomic abnormalities. There is a high prevalence of clinical autonomic disorders among Long-COVID patients, with limited knowledge of the underlying mechanisms and the effectiveness of treatment options.
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Affiliation(s)
- Rashmin Hira
- Libin Cardiovascular Institute, Cumming School of Medicine, Calgary, Alberta, Canada
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Kavithra Karalasingham
- Libin Cardiovascular Institute, Cumming School of Medicine, Calgary, Alberta, Canada
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Jacquie R Baker
- Libin Cardiovascular Institute, Cumming School of Medicine, Calgary, Alberta, Canada
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Satish R Raj
- Libin Cardiovascular Institute, Cumming School of Medicine, Calgary, Alberta, Canada.
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada.
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28
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Liu Y, Gu X, Li H, Zhang H, Xu J. Mechanisms of long COVID: An updated review. CHINESE MEDICAL JOURNAL PULMONARY AND CRITICAL CARE MEDICINE 2023; 1:231-240. [PMID: 39171285 PMCID: PMC11332859 DOI: 10.1016/j.pccm.2023.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Indexed: 08/23/2024]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has been ongoing for more than 3 years, with an enormous impact on global health and economies. In some patients, symptoms and signs may remain after recovery from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, which cannot be explained by an alternate diagnosis; this condition has been defined as long COVID. Long COVID may exist in patients with both mild and severe disease and is prevalent after infection with different SARS-CoV-2 variants. The most common symptoms include fatigue, dyspnea, and other symptoms involving multiple organs. Vaccination results in lower rates of long COVID. To date, the mechanisms of long COVID remain unclear. In this narrative review, we summarized the clinical presentations and current evidence regarding the pathogenesis of long COVID.
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Affiliation(s)
- Yan Liu
- National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China–Japan Friendship Hospital, Beijing 100029, China
- Department of Infectious Disease, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, China
| | - Xiaoying Gu
- Department of Clinical Research and Data Management, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Haibo Li
- National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China–Japan Friendship Hospital, Beijing 100029, China
| | - Hui Zhang
- National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China–Japan Friendship Hospital, Beijing 100029, China
- Department of Pulmonary and Critical Care Medicine, China–Japan Friendship Hospital, Capital Medical University, Beijing 100029, China
| | - Jiuyang Xu
- National Center for Respiratory Medicine; State Key Laboratory of Respiratory Health and Multimorbidity; National Clinical Research Center for Respiratory Diseases; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China–Japan Friendship Hospital, Beijing 100029, China
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29
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Ishizuka K, Miyagami T, Tsuchida T, Saita M, Ohira Y, Naito T. Online search interest in long-term symptoms of coronavirus disease 2019 during the COVID-19 pandemic in Japan: Infodemiology study using the most visited search engine in Japan. PLoS One 2023; 18:e0294261. [PMID: 37967057 PMCID: PMC10650984 DOI: 10.1371/journal.pone.0294261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/30/2023] [Indexed: 11/17/2023] Open
Abstract
Prolonged symptoms that occur after COVID-19 (long-COVID) vary from mild, which do not interfere with daily life, to severe, which require long-term social support. This study assessed the secular trend in online searches on long-COVID in Japan. We conducted an observational study using data provided by Yahoo! JAPAN on the monthly search volume of query terms related to long-COVID from January 2020 to December 2022, including the search volume of the query "コロナ" (long-COVID in Japanese). The number of new cases of COVID-19 by month was used as a control for search trends, and the symptoms retrieved in conjunction with long-COVID were compared. Trends in online searches for each symptom of long-COVID were analyzed. The symptoms of long-COVID were classified according to "Component 1-Symptoms and Complaints" of the International Classification of Primary Care, 2nd edition (ICPC-2). Interest in long-COVID increased in response to peaks in the number of new cases of COVID-19 in Japan. The most frequent symptom searches with long-COVID were hair loss/baldness (3,530, 21,400, and 33,600 searches in 2020, 2021, and 2022, respectively), cough (340, 7,900 and 138,910 searches in 2020, 2021, and 2022, respectively), disturbance of smell/taste (230, 13,340, and 44,160 searches in 2020, 2021, and 2022, respectively), and headache (580, 6,180, and 42,870 searches in 2020, 2021, and 2022, respectively). In addition, the ranking of interest in "weakness/tiredness, general" in long-COVID increased each year (not in the top 10 in 2020, seventh in 2021, and second in 2022), and the absolute number of searches also increased. To our knowledge, this is the first study to investigate secular trends in online interest in long-COVID in the world. Continued monitoring of online interest in long-COVID is necessary to prepare for a possible increase in the number of patients with long-COVID.
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Affiliation(s)
- Kosuke Ishizuka
- Department of General Medicine, Yokohama City University School of Medicine, Yokohama, Japan
| | - Taiju Miyagami
- Department of General Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Tomoya Tsuchida
- Division of General Internal Medicine, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Mizue Saita
- Department of General Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Yoshiyuki Ohira
- Division of General Internal Medicine, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Toshio Naito
- Department of General Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan
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30
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Frontera JA, Guekht A, Allegri RF, Ashraf M, Baykan B, Crivelli L, Easton A, Garcia-Azorin D, Helbok R, Joshi J, Koehn J, Koralnik I, Netravathi M, Michael B, Nilo A, Özge A, Padda K, Pellitteri G, Prasad K, Romozzi M, Saylor D, Seed A, Thakur K, Uluduz D, Vogrig A, Welte TM, Westenberg E, Zhuravlev D, Zinchuk M, Winkler AS. Evaluation and treatment approaches for neurological post-acute sequelae of COVID-19: A consensus statement and scoping review from the global COVID-19 neuro research coalition. J Neurol Sci 2023; 454:120827. [PMID: 37856998 DOI: 10.1016/j.jns.2023.120827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/14/2023] [Accepted: 10/04/2023] [Indexed: 10/21/2023]
Abstract
Post-acute neurological sequelae of COVID-19 affect millions of people worldwide, yet little data is available to guide treatment strategies for the most common symptoms. We conducted a scoping review of PubMed/Medline from 1/1/2020-4/1/2023 to identify studies addressing diagnosis and treatment of the most common post-acute neurological sequelae of COVID-19 including: cognitive impairment, sleep disorders, headache, dizziness/lightheadedness, fatigue, weakness, numbness/pain, anxiety, depression and post-traumatic stress disorder. Utilizing the available literature and international disease-specific society guidelines, we constructed symptom-based differential diagnoses, evaluation and management paradigms. This pragmatic, evidence-based consensus document may serve as a guide for a holistic approach to post-COVID neurological care and will complement future clinical trials by outlining best practices in the evaluation and treatment of post-acute neurological signs/symptoms.
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Affiliation(s)
- Jennifer A Frontera
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA.
| | - Alla Guekht
- Moscow Research and Clinical Center for Neuropsychiatry, Moscow, Russia; Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Mariam Ashraf
- Department of Anesthesiology, Weill Cornell Medical Center, New York Presbyterian Hospital, New York, NY, USA
| | - Betül Baykan
- Department of Neurology, Istanbul University, Istanbul Faculty of Medicine, and EMAR Medical Center, Istanbul, Turkey
| | - Lucía Crivelli
- Department of Cognitive Neurology, Fleni, Buenos Aires, Argentina
| | - Ava Easton
- The Encephalitis Society, Malton, UK; Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - David Garcia-Azorin
- Department of Neurology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Raimund Helbok
- Department of Neurology, Neuro-Intensive Care Unit, Medical University of Innsbruck, Innsbruck, Austria; Department of Neurology, Johannes Kepler University, Linz, Austria
| | - Jatin Joshi
- Department of Anesthesiology, Weill Cornell Medical Center, New York Presbyterian Hospital, New York, NY, USA
| | - Julia Koehn
- Department of Neurology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - Igor Koralnik
- Departmentof Neurology, Northwestern Feinberg School of Medicine, Chicago, IL, USA
| | - M Netravathi
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - Benedict Michael
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK; National Institute for Health Research Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, UK; The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Annacarmen Nilo
- Clinical Neurology, Santa Maria della Misericordia University Hospital, Azienda Sanitaria Universitaria Friuli Centrale (ASU FC), Udine, Italy
| | - Aynur Özge
- Department of Neurology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Karanbir Padda
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
| | - Gaia Pellitteri
- Clinical Neurology, Santa Maria della Misericordia University Hospital, Azienda Sanitaria Universitaria Friuli Centrale (ASU FC), Udine, Italy
| | - Kameshwar Prasad
- Chief Executive Office, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Marina Romozzi
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Dipartimento Universitario Di Neuroscienze, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Deanna Saylor
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Internal Medicine, University Teaching Hospital, Lusaka, Zambia
| | - Adam Seed
- The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Kiran Thakur
- Department of Neurology, Columbia University Irving Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Derya Uluduz
- Department of Neurology, Istanbul University, Istanbul Faculty of Medicine, and EMAR Medical Center, Istanbul, Turkey
| | - Alberto Vogrig
- Clinical Neurology, Santa Maria della Misericordia University Hospital, Azienda Sanitaria Universitaria Friuli Centrale (ASU FC), Udine, Italy; Department of Medicine, University of Udine Medical School, Udine, Italy
| | - Tamara M Welte
- Department of Neurology, Universitätsklinikum Erlangen, Erlangen, Germany; Department of Neurology, Center for Global Health, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Erica Westenberg
- Department of Neurology, Center for Global Health, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Dmitry Zhuravlev
- Moscow Research and Clinical Center for Neuropsychiatry, Moscow, Russia
| | - Mikhail Zinchuk
- Moscow Research and Clinical Center for Neuropsychiatry, Moscow, Russia
| | - Andrea S Winkler
- Department of Neurology, Center for Global Health, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany; Department of Community Medicine and Global Health, Institute of Health and Society, University of Oslo, Oslo, Norway; Blavatnik Institute of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
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31
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Azcue N, Del Pino R, Acera M, Fernández-Valle T, Ayo-Mentxakatorre N, Pérez-Concha T, Murueta-Goyena A, Lafuente JV, Prada A, López de Munain A, Ruiz Irastorza G, Martín-Iglesias D, Ribacoba L, Gabilondo I, Gómez-Esteban JC, Tijero-Merino B. Dysautonomia and small fiber neuropathy in post-COVID condition and Chronic Fatigue Syndrome. J Transl Med 2023; 21:814. [PMID: 37968647 PMCID: PMC10648633 DOI: 10.1186/s12967-023-04678-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 10/28/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and post-COVID condition can present similarities such as fatigue, brain fog, autonomic and neuropathic symptoms. METHODS The study included 87 patients with post-COVID condition, 50 patients with ME/CFS, and 50 healthy controls (HC). The hemodynamic autonomic function was evaluated using the deep breathing technique, Valsalva maneuver, and Tilt test. The presence of autonomic and sensory small fiber neuropathy (SFN) was assessed with the Sudoscan and with heat and cold evoked potentials, respectively. Finally, a complete neuropsychological evaluation was performed. The objective of this study was to analyze and compare the autonomic and neuropathic symptoms in post-COVID condition with ME/CFS, and HC, as well as, analyze the relationship of these symptoms with cognition and fatigue. RESULTS Statistically significant differences were found between groups in heart rate using the Kruskal-Wallis test (H), with ME/CFS group presenting the highest (H = 18.3; p ≤ .001). The Postural Orthostatic Tachycardia Syndrome (POTS), and pathological values in palms on the Sudoscan were found in 31% and 34% of ME/CFS, and 13.8% and 19.5% of post-COVID patients, respectively. Concerning evoked potentials, statistically significant differences were found in response latency to heat stimuli between groups (H = 23.6; p ≤ .01). Latency was highest in ME/CFS, and lowest in HC. Regarding cognition, lower parasympathetic activation was associated with worse cognitive performance. CONCLUSIONS Both syndromes were characterized by inappropriate tachycardia at rest, with a high percentage of patients with POTS. The prolonged latencies for heat stimuli suggested damage to unmyelinated fibers. The higher proportion of patients with pathological results for upper extremities on the Sudoscan suggested a non-length-dependent SFN.
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Affiliation(s)
- N Azcue
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
| | - R Del Pino
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain.
| | - M Acera
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
| | - T Fernández-Valle
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
- Department of Neurology, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain
- Department of Neurosciences, University of the Basque Country UPV/EHU, Leioa, Spain
| | - N Ayo-Mentxakatorre
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
| | - T Pérez-Concha
- Department of Neurology, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain
- Department of Medicine, School of Medicine, University of Deusto, Bilbao, Spain
| | - A Murueta-Goyena
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
- Department of Neurosciences, University of the Basque Country UPV/EHU, Leioa, Spain
| | - J V Lafuente
- Department of Neurosciences, University of the Basque Country UPV/EHU, Leioa, Spain
| | - A Prada
- Department of Immunology, Donostia University Hospital-OSAKIDETZA, San Sebastián, Spain
- Spanish Network for the Research in Multiple Sclerosis, San Sebastian, Spain
| | - A López de Munain
- Department of Neurology, Donostia University Hospital-OSAKIDETZA, San Sebastián, Spain
- Department of Neurosciences, Biodonostia Health Research Institute, San Sebastián, Spain
- Department of Neurosciences, University of the Basque Country UPV-EHU, San Sebastián, Spain
- Department of Medicine, School of Medicine, University of Deusto, Bilbao, Spain
- CIBERNED-CIBER, Institute Carlos III, Madrid, Spain
| | - G Ruiz Irastorza
- Autoimmune Diseases Research Unit, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Department of Autoimmune Diseases, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain
| | - D Martín-Iglesias
- Autoimmune Diseases Research Unit, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Department of Autoimmune Diseases, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain
| | - L Ribacoba
- Department of Internal Medicine, Cruces University Hospital, Barakaldo, Spain
| | - I Gabilondo
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
- Department of Neurology, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain
- The Basque Foundation for Science, IKERBASQUE, Bilbao, Spain
| | - J C Gómez-Esteban
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain.
- Department of Neurology, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain.
- Department of Neurosciences, University of the Basque Country UPV/EHU, Leioa, Spain.
- Department of Medicine, School of Medicine, University of Deusto, Bilbao, Spain.
- CIBERNED-CIBER, Institute Carlos III, Madrid, Spain.
| | - B Tijero-Merino
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo (Bizkaia), CP, Spain
- Department of Neurology, Cruces University Hospital-OSAKIDETZA, Barakaldo, Spain
- Department of Medicine, School of Medicine, University of Deusto, Bilbao, Spain
- CIBERNED-CIBER, Institute Carlos III, Madrid, Spain
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Soprano CM, Ngo R, Konys CA, Bazier A, Salamon KS. Post-Acute Sequelae of COVID-19 (PASC) in Pediatrics: Factors That Impact Symptom Severity and Referral to Treatment. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1805. [PMID: 38002896 PMCID: PMC10670189 DOI: 10.3390/children10111805] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/02/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023]
Abstract
The post-acute sequelae of COVID-19 (PASC) is a complex condition. While there are emerging studies on its effects in adults, there is scarce research regarding the long-term effects of COVID-19 infection among youth. Several researchers have likened long-haul COVID-19 to chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) and postural orthostatic tachycardia syndrome (POTS). In adults, the prognosis for these diagnoses is less promising than that in youth; however, there is currently very little information available on the presentation of youth with PASC. A better understanding of the specific symptom presentation for youth diagnosed with PASC is necessary. Retrospective chart reviews were conducted collecting demographic data, COVID-19 symptoms and disease progression, and vaccination status. Additional data on referrals to a PASC treatment program and appointments attended were collected. Overall, data suggested that youth present with less severe PASC symptoms than adults, and the role of vaccination is unclear. These youth are often not referred to treatment programs. More exploration is necessary to continue to build an understanding of how best to aid youth diagnosed with PASC.
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Affiliation(s)
- Catherine M. Soprano
- Nemours Children’s Health, Wilmington, DE 19803, USA;
- Sydney Kimmel College of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Ryan Ngo
- Bowdoin College, Brunswick, ME 04011, USA
| | - Casey A. Konys
- Lurie Children’s Hospital of Chicago, Chicago, IL 60614, USA
| | - Ashley Bazier
- School of Medicine, Indiana University, Indianapolis, IN 46805, USA
| | - Katherine S. Salamon
- Nemours Children’s Health, Wilmington, DE 19803, USA;
- Sydney Kimmel College of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Luchian ML, Higny J, Benoit M, Robaye B, Berners Y, Henry JP, Colle B, Xhaët O, Blommaert D, Droogmans S, Motoc AI, Cosyns B, Gabriel L, Guedes A, Demeure F. Unmasking Pandemic Echoes: An In-Depth Review of Long COVID's Unabated Cardiovascular Consequences beyond 2020. Diagnostics (Basel) 2023; 13:3368. [PMID: 37958264 PMCID: PMC10647305 DOI: 10.3390/diagnostics13213368] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/23/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
At the beginning of 2020, coronavirus disease 2019 (COVID-19) emerged as a new pandemic, leading to a worldwide health crisis and overwhelming healthcare systems due to high numbers of hospital admissions, insufficient resources, and a lack of standardized therapeutic protocols. Multiple genetic variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have been detected since its first public declaration in 2020, some of them being considered variants of concern (VOCs) corresponding to several pandemic waves. Nevertheless, a growing number of COVID-19 patients are continuously discharged from hospitals, remaining symptomatic even months after their first episode of COVID-19 infection. Long COVID-19 or 'post-acute COVID-19 syndrome' emerged as the new pandemic, being characterized by a high variability of clinical manifestations ranging from cardiorespiratory and neurological symptoms such as chest pain, exertional dyspnoea or cognitive disturbance to psychological disturbances, e.g., depression, anxiety or sleep disturbance with a crucial impact on patients' quality of life. Moreover, Long COVID is viewed as a new cardiovascular risk factor capable of modifying the trajectory of current and future cardiovascular diseases, altering the patients' prognosis. Therefore, in this review we address the current definitions of Long COVID and its pathophysiology, with a focus on cardiovascular manifestations. Furthermore, we aim to review the mechanisms of acute and chronic cardiac injury and the variety of cardiovascular sequelae observed in recovered COVID-19 patients, in addition to the potential role of Long COVID clinics in the medical management of this new condition. We will further address the role of future research for a better understanding of the actual impact of Long COVID and future therapeutic directions.
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Affiliation(s)
- Maria-Luiza Luchian
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Julien Higny
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Martin Benoit
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Benoit Robaye
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Yannick Berners
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Jean-Philippe Henry
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Benjamin Colle
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Olivier Xhaët
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Dominique Blommaert
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Steven Droogmans
- Department of Cardiology, Centrum voor Hart-en Vaatziekten, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Andreea Iulia Motoc
- Department of Cardiology, Centrum voor Hart-en Vaatziekten, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Bernard Cosyns
- Department of Cardiology, Centrum voor Hart-en Vaatziekten, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Laurence Gabriel
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Antoine Guedes
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
| | - Fabian Demeure
- Department of Cardiology, Université Catholique de Louvain, CHU UCL Namur Site Godinne, Av. Dr. G. Thérasse, 1, 5530 Yvoir, Belgium (A.G.); (F.D.)
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Edward JA, Peruri A, Rudofker E, Shamapant N, Parker H, Cotter R, Sabin K, Lawley J, Cornwell WK. Characteristics and Treatment of Exercise Intolerance in Patients With Long COVID. J Cardiopulm Rehabil Prev 2023; 43:400-406. [PMID: 37646620 DOI: 10.1097/hcr.0000000000000821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The post-acute sequalae of SARS-CoV-2, also known as "Long COVID," is characterized by profound fatigue, impaired functional capacity with post-exertional malaise, orthostatic intolerance, and tachycardia. At least 25-30% of individuals impacted by SARS-CoV-2 will go on to experience the Long COVID syndrome, underscoring the detrimental impact this condition has on society. Although efforts are underway to further understand risk factors for Long COVID and identify strategies to prevent disease development entirely, implementation of treatment strategies is warranted to alleviate symptom burden among those affected. This review provides a rationale for exercise prescriptions tailored to the Long COVID patient based on the pathophysiology underlying this syndrome, as well as the previously demonstrated benefits of exercise training in other similar populations whose clinical manifestations result from cardiac deconditioning. Herein, we discuss methods to tailor exercise protocols, accommodating exercise intolerance and post-exertional malaise that may otherwise limit the ability to participate in a training protocol, as well as data demonstrating that a focused exercise prescription may effectively alleviate symptom burden in these patients. Long COVID results, in large part, from deconditioning, which may result from as little as 20 hr of inactivity. Exercise prescriptions tailored to patients with Long COVID may effectively alleviate symptom burden associated with this condition and in the absence of overt contraindications should be considered in management.
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Affiliation(s)
- Justin A Edward
- Department of Medicine-Cardiology (Drs Edward, Rudofker, Shamapant, Parker, Cotter, and Cornwell and Ms Sabin) and Clinical Translational Research Center (Dr Cornwell), University of Colorado Anschutz Medical Campus, Aurora; Department of Medicine, Division of Cardiology, Parkview Medical Center, Pueblo, Colorado (Dr Peruri); and Department of Sport Science, Division of Physiology, University of Innsbruck, Innsbruck, Austria (Dr Lawley)
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Kyaw KKK. Long post-COVID-19 postural tachycardia syndrome (PoTS): A novel case. Clin Med (Lond) 2023; 23:48-49. [PMID: 38182196 PMCID: PMC11046601 DOI: 10.7861/clinmed.23-6-s48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
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36
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Gilbert A. There is an overlap between long covid and ME/CFS. BMJ 2023; 383:2462. [PMID: 37875300 DOI: 10.1136/bmj.p2462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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Gilbert A. We need better care for long covid and ME/CFS. BMJ 2023; 383:2372. [PMID: 37848205 DOI: 10.1136/bmj.p2372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
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Gómez-Moyano E, Rodríguez-Capitán J, Gaitán Román D, Reyes Bueno JA, Villalobos Sánchez A, Espíldora Hernández F, González Angulo GE, Molina Mora MJ, Thurnhofer-Hemsi K, Molina-Ramos AI, Romero-Cuevas M, Jiménez-Navarro M, Pavón-Morón FJ. Postural orthostatic tachycardia syndrome and other related dysautonomic disorders after SARS-CoV-2 infection and after COVID-19 messenger RNA vaccination. Front Neurol 2023; 14:1221518. [PMID: 37654428 PMCID: PMC10467287 DOI: 10.3389/fneur.2023.1221518] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/21/2023] [Indexed: 09/02/2023] Open
Abstract
The COVID-19 pandemic has caused a challenge for our society due to the post-acute sequelae of the disease. Persistent symptoms and long-term multiorgan complications, known as post-acute COVID-19 syndrome, can occur beyond 4 weeks from the onset of the COVID-19 infection. Postural orthostatic tachycardia syndrome (POTS) is considered a variety of dysautonomia, which is characterized by chronic symptoms that occur with standing and a sustained increase in heart rate, without orthostatic hypotension. POTS can lead to debilitating symptoms, significant disability, and impaired quality of life. In this narrative review, the etiopathogenic basis, epidemiology, clinical manifestations, diagnosis, treatment, prognosis, and socioeconomic impact of POTS, as well as other related dysautonomic disorders, after COVID-19 infection and SARS-CoV-2 postvaccination, were discussed. After a search conducted in March 2023, a total of 89 relevant articles were selected from the PubMed, Google Scholar, and Web of Science databases. The review highlights the importance of recognizing and managing POTS after COVID-19 infection and vaccination, and the approach to autonomic disorders should be known by all specialists in different medical areas. The diagnosis of POTS requires a comprehensive clinical assessment, including a detailed medical history, physical examination, orthostatic vital signs, and autonomic function tests. The treatment of POTS after COVID-19 infection or vaccination is mainly focused on lifestyle modifications, such as increased fluid and salt intake, exercise, and graduated compression stockings. Pharmacotherapy, such as beta-blockers, fludrocortisone, midodrine, and ivabradine, may also be used in selected cases. Further research is needed to understand the underlying mechanisms, risk factors, and optimal treatment strategies for this complication.
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Affiliation(s)
| | - Jorge Rodríguez-Capitán
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), IBIMA-Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
- Department of Cardiology, Hospital Universitario Virgen de la Victoria, Málaga, Spain
| | - Daniel Gaitán Román
- Department of Cardiology, Hospital Regional Universitario de Málaga, Málaga, Spain
| | | | | | | | | | | | - Karl Thurnhofer-Hemsi
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), IBIMA-Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
- Department of Computer Languages and Computer Sciences, University of Malaga, Málaga, Spain
| | - Ana Isabel Molina-Ramos
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), IBIMA-Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
- Department of Cardiology, Hospital Universitario Virgen de la Victoria, Málaga, Spain
| | - Miguel Romero-Cuevas
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), IBIMA-Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
- Department of Cardiology, Hospital Universitario Virgen de la Victoria, Málaga, Spain
| | - Manuel Jiménez-Navarro
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), IBIMA-Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
- Department of Cardiology, Hospital Universitario Virgen de la Victoria, Málaga, Spain
- Department of Medicine and Dermatology, University of Malaga, Málaga, Spain
| | - Francisco Javier Pavón-Morón
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), IBIMA-Plataforma BIONAND, Universidad de Málaga, Málaga, Spain
- Department of Cardiology, Hospital Universitario Virgen de la Victoria, Málaga, Spain
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Siah KTH, Mahadeva S. Letter: Post-COVID-19 disorders of gut-brain interaction (DGBI)-Just post-infectious or a multi-faceted entity? Aliment Pharmacol Ther 2023; 58:130-131. [PMID: 37307548 DOI: 10.1111/apt.17549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Kewin T H Siah
- Division of Gastroenterology & Hepatology, University Medicine Cluster, National University Hospital, Singapore, Singapore
- Department of Internal Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Sanjiv Mahadeva
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Brus IM, Spronk I, Haagsma JA, de Groot A, Tieleman P, Biere-Rafi S, Polinder S. The prolonged impact of COVID-19 on symptoms, health-related quality of life, fatigue and mental well-being: a cross-sectional study. FRONTIERS IN EPIDEMIOLOGY 2023; 3:1144707. [PMID: 38455946 PMCID: PMC10911032 DOI: 10.3389/fepid.2023.1144707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 06/01/2023] [Indexed: 03/09/2024]
Abstract
Background A subset of patients experience persisting symptoms after an acute COVID-19 infection, referred to as "post COVID-19 condition". This cross-sectional study aimed to compare symptoms, health-related quality of life (HRQoL), fatigue, mental well-being, and determinants of diminished HRQoL, between patients with post COVID-19 condition categorized by time since acute infection. Methods We performed an online survey and analyzed responses of 10,194 adult respondents with a confirmed or suspected COVID-19 infection, who experienced persisting symptoms ≥3 months after the initial infection. The most debilitating symptoms and health outcomes were studied separately for respondents 3-6, 7-9, 10-12, 13-18, 19-24, and >24 months after acute infection. Results At each time period, fatigue, sensory-processing problems, and concentration problems were the most debilitating symptoms reported by respondents, although the proportion of respondents who reported these symptoms differed significantly between time periods. Respondents 3-6 months post-acute infection had the lowest HRQoL (median EQ-5D utility score: 0.59), the highest fatigue level (median score: 110.0) and the highest proportion with a likely depressive disorder (32.4%), whereas respondents 13-18 months post-infection had the highest HRQoL (0.65), the lowest fatigue level (106.0), and the second lowest proportion with a likely depressive disorder (25.0%) (p = 0.000-0.007). Compared to those 13-18 and 19-24 months post-infection, respondents >24 months post-infection had a slightly lower HRQoL (0.60), lower fatigue level (108.0), and lower proportion with a likely depressive disorder (29.2%), although only the differences in HRQoL were statistically significant (p = 0.001-0.010). Younger age, female gender, lower level of education, not having paid work before COVID-19, comorbidity, and not being vaccinated, seemed to be associated with lower HRQoL. Conclusion Regardless of time since infection, respondents considered fatigue, sensory processing problems and concentration problems the most debilitating symptoms. They experienced a low HRQoL and severe fatigue, even more than two years after acute COVID-19 infection. Respondents 3-6 months post-infection had the worst health outcomes, whereas respondents 13-18 months post-infection had the best outcomes, indicating that, at least for a subgroup of patients, health status may improve over time.
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Affiliation(s)
- Iris M. Brus
- Department of Public Health, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Inge Spronk
- Department of Public Health, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Juanita A. Haagsma
- Department of Public Health, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | | | | | - Suzanne Polinder
- Department of Public Health, Erasmus University Medical Center, Rotterdam, Netherlands
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Gloeckl R, Leitl D, Schneeberger T, Jarosch I, Koczulla AR. Rehabilitative interventions in patients with persistent post COVID-19 symptoms-a review of recent advances and future perspectives. Eur Arch Psychiatry Clin Neurosci 2023:10.1007/s00406-023-01631-9. [PMID: 37326700 DOI: 10.1007/s00406-023-01631-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/29/2023] [Indexed: 06/17/2023]
Abstract
The SARS-CoV-2 pandemic has not only caused millions of deaths but left also millions of people with persistent symptoms behind. These long-term COVID-19 sequelae cause a considerable burden on individuals´ health, healthcare systems, and economies worldwide given the high rate of SARS-CoV-2 infections. Therefore, rehabilitative interventions and strategies are needed to counteract the post COVID-19 sequelae. The importance of rehabilitation for patients with persistent COVID-19 symptoms has been recently also highlighted in a Call for Action by the World Health Organisation. Based on previously published research, but also in line with clinical experience, COVID-19 is not one specific disease but rather presents in different phenotypes that vary in their pathophysiological mechanisms, symptomatic manifestations, and potential interventional approaches. This review provides a proposal for differentiating post COVID-19 patients in non-organ-specific phenotypes that may help clinicians to evaluate patients and to plan therapeutic options. Furthermore, we present current unmet needs and suggest a potential pathway for a specific rehabilitation approach in people with persistent post-COVID symptoms.
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Affiliation(s)
- Rainer Gloeckl
- Institute for Pulmonary Rehabilitation Research, Schoen Klinik Berchtesgadener Land, Malterhoeh 1, 83471, Schoenau Am Koenigssee, Germany.
- Department of Pulmonary Rehabilitation, Member of the German Center for Lung Research (DZL), University Medical Center Giessen and Marburg, Philipps-University Marburg (UGMLC), Marburg, Germany.
| | - Daniela Leitl
- Institute for Pulmonary Rehabilitation Research, Schoen Klinik Berchtesgadener Land, Malterhoeh 1, 83471, Schoenau Am Koenigssee, Germany
- Department of Pulmonary Rehabilitation, Member of the German Center for Lung Research (DZL), University Medical Center Giessen and Marburg, Philipps-University Marburg (UGMLC), Marburg, Germany
| | - Tessa Schneeberger
- Institute for Pulmonary Rehabilitation Research, Schoen Klinik Berchtesgadener Land, Malterhoeh 1, 83471, Schoenau Am Koenigssee, Germany
- Department of Pulmonary Rehabilitation, Member of the German Center for Lung Research (DZL), University Medical Center Giessen and Marburg, Philipps-University Marburg (UGMLC), Marburg, Germany
| | - Inga Jarosch
- Institute for Pulmonary Rehabilitation Research, Schoen Klinik Berchtesgadener Land, Malterhoeh 1, 83471, Schoenau Am Koenigssee, Germany
- Department of Pulmonary Rehabilitation, Member of the German Center for Lung Research (DZL), University Medical Center Giessen and Marburg, Philipps-University Marburg (UGMLC), Marburg, Germany
| | - Andreas Rembert Koczulla
- Institute for Pulmonary Rehabilitation Research, Schoen Klinik Berchtesgadener Land, Malterhoeh 1, 83471, Schoenau Am Koenigssee, Germany
- Department of Pulmonary Rehabilitation, Member of the German Center for Lung Research (DZL), University Medical Center Giessen and Marburg, Philipps-University Marburg (UGMLC), Marburg, Germany
- Teaching Hospital, Paracelsus Medical University Salzburg, Salzburg, Austria
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Minhas R, Bharadwaj AS. COVID-19-Induced Postural Orthostatic Tachycardia Syndrome and Dysautonomia. Cureus 2023; 15:e40235. [PMID: 37435242 PMCID: PMC10332885 DOI: 10.7759/cureus.40235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2023] [Indexed: 07/13/2023] Open
Abstract
Postural orthostatic tachycardia syndrome (POTS) is a disorder characterized by orthostatic intolerance and, by definition, includes clinical symptoms of lightheadedness, palpitations, and tremulousness among others. It is considered a relatively rare condition that affects approximately 0.2% of the general population, and it is estimated that between 500,000 to 1,000,000 individuals in the United States have the condition and recently has been linked to post-infectious (viral) etiologies. We present a case of a 53-year-old woman who was diagnosed with POTS following extensive autoimmune workup, who was also status post-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The post-coronavirus disease 2019 (COVID-19) cardiovascular autonomic dysfunction can affect global circulatory control, which describes increased heart rate even at resting states, and local circulatory disorders, such as coronary microvascular disease leading to vasospasm, as described by the patient's chest pain, and venous retention leading to pooling and reduced venous return after standing. Along with tachycardia with orthostatic intolerance, other symptoms can also accompany the syndrome. In the majority of patients, intravascular volume is reduced, leading to decreased venous return to the heart and causing reflex tachycardia and orthostatic intolerance. Management varies from lifestyle modifications to pharmacologic therapy, to which patients generally show a good response. POTS should be a differential on the cards, especially in patients post-COVID-19 infection, as these symptoms can be misdiagnosed as having psychological etiologies.
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Affiliation(s)
- Resnah Minhas
- Medicine, American University of Antigua, St. Johns, ATG
| | - Adithya Sateesh Bharadwaj
- Medicine, University of Maryland Midtown Campus, Baltimore, USA
- Medicine, American University of Antigua, St. Johns, ATG
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Gill C, Cho TA. Neurologic Complications of COVID-19. Continuum (Minneap Minn) 2023; 29:946-965. [PMID: 37341337 DOI: 10.1212/con.0000000000001272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Abstract
OBJECTIVE This article describes the spectrum of neurologic complications occurring in acute or postacute infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as well as the neurologic risks and benefits of vaccination against SARS-CoV-2. LATEST DEVELOPMENTS Early in the COVID-19 pandemic, reports of neurologic complications of COVID-19 began to surface. A variety of neurologic conditions have since been reported in association with COVID-19. Understanding of the underlying mechanism of COVID-19 neurologic involvement continues to evolve; however, the evidence seems to suggest that aberrant inflammatory responses may play a role. In addition to neurologic symptoms in acute COVID-19, neurologic post-COVID-19 conditions are increasingly recognized. The development of COVID-19 vaccines has been essential in preventing the spread of COVID-19. With increasing numbers of vaccine doses administered, various neurologic adverse events have been reported. ESSENTIAL POINTS Neurologists must be aware of the potential acute, postacute, and vaccine-associated neurologic complications associated with COVID-19 and be poised to serve as integral members of multidisciplinary care teams for patients with COVID-19-related conditions.
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44
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Quinn KL, Lam GY, Walsh JF, Bhéreur A, Brown AD, Chow CW, Chung KYC, Cowan J, Crampton N, Décary S, Falcone EL, Graves L, Gross DP, Hanneman K, Harvey PJ, Holmes S, Katz GM, Parhizgar P, Sharkawy A, Tran KC, Waserman S, Zannella VE, Cheung AM. Cardiovascular Considerations in the Management of People With Suspected Long COVID. Can J Cardiol 2023; 39:741-753. [PMID: 37030518 PMCID: PMC10160565 DOI: 10.1016/j.cjca.2023.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/03/2023] [Accepted: 04/03/2023] [Indexed: 04/09/2023] Open
Abstract
Approximately 15% of adult Canadians with SARS-CoV-2 infection develop lingering symptoms beyond 12 weeks after acute infection, known as post-COVID condition or long COVID. Some of the commonly reported long COVID cardiovascular symptoms include fatigue, shortness of breath, chest pain, and palpitations. Suspected long-term cardiovascular complications of SARS-CoV-2 infection might present as a constellation of symptoms that can be challenging for clinicians to diagnose and treat. When assessing patients with these symptoms, clinicians need to keep in mind myalgic encephalomyelitis/chronic fatigue syndrome, postexertional malaise and postexertional symptom exacerbation, dysautonomia with cardiac manifestations such as inappropriate sinus tachycardia, and postural orthostatic tachycardia syndrome, and occasionally mast cell activation syndrome. In this review we summarize the globally evolving evidence around management of cardiac sequelae of long COVID. In addition, we include a Canadian perspective, consisting of a panel of expert opinions from people with lived experience and experienced clinicians across Canada who have been involved in management of long COVID. The objective of this review is to offer some practical guidance to cardiologists and generalist clinicians regarding diagnostic and treatment approaches for adult patients with suspected long COVID who continue to experience unexplained cardiac symptoms.
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Affiliation(s)
- Kieran L Quinn
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada; ICES, Toronto and Ottawa, Ontario, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; Department of Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada; Temmy Latner Centre for Palliative Care, Toronto, Ontario, Canada.
| | - Grace Y Lam
- Division of Pulmonary Medicine, Department of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada; Alberta Respiratory Centre, Edmonton, Alberta, Canada
| | - Jillian F Walsh
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Anne Bhéreur
- Department of Family Medicine and Emergency Medicine, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada; School of Rehabilitation, Faculty of Medicine and Health Science, Université de Sherbrooke, Research Center of the Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Adam D Brown
- Cornerstone Physiotherapy, Toronto, Ontario, Canada
| | - Chung Wai Chow
- Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | | | - Juthaporn Cowan
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Clinical Epidemiology Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Noah Crampton
- Toronto Western Family Health Team, University Health Network, Toronto, Ontario, Canada
| | - Simon Décary
- School of Rehabilitation, Faculty of Medicine and Health Science, Université de Sherbrooke, Research Center of the Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Emilia L Falcone
- Center for Inflammation, Immunity and Infectious Diseases, Montreal Clinical Research Institute (IRCM), Montreal, Québec, Canada; Department of Medicine, Université de Montréal, Montreal, Québec, Canada
| | - Lorraine Graves
- Person with lived experience, Vancouver, British Columbia, Canada
| | - Douglas P Gross
- Department of Physical Therapy, University of Alberta, Edmonton, Alberta, Canada
| | - Kate Hanneman
- Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada; University Medical Imaging Toronto, Peter Munk Cardiac Center, University Health Network, Toronto, Ontario, Canada; Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Paula J Harvey
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Division of Cardiology, Department of Medicine, Women's College Hospital, Toronto, Ontario, Canada
| | - Sheila Holmes
- Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | - Gabrielle M Katz
- Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Parinaz Parhizgar
- Department of Medicine, University Health Network, Toronto, Ontario, Canada; Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Abdu Sharkawy
- Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | - Karen C Tran
- Division of General Internal Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Susan Waserman
- Division of Clinical Immunology and Allergy, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Vanessa E Zannella
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | - Angela M Cheung
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; Department of Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada; Department of Medicine, University Health Network, Toronto, Ontario, Canada; Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
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45
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Bailey J, Lavelle B, Miller J, Jimenez M, Lim PH, Orban ZS, Clark JR, Tomar R, Ludwig A, Ali ST, Lank GK, Zielinski A, Mylvaganam R, Kalhan R, Muayed ME, Mutharasan RK, Liotta EM, Sznajder JI, Davidson C, Koralnik IJ, Sala MA. Multidisciplinary Center Care for Long COVID Syndrome - a Retrospective Cohort Study. Am J Med 2023:S0002-9343(23)00328-5. [PMID: 37220832 DOI: 10.1016/j.amjmed.2023.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/17/2023] [Accepted: 05/17/2023] [Indexed: 05/25/2023]
Abstract
BACKGROUND Persistent multi-organ symptoms after COVID-19 have been termed "long COVID" or "post-acute sequelae of SARS-CoV-2 infection" (PASC). The complexity of these clinical manifestations posed challenges early in the pandemic as different ambulatory models formed out of necessity to manage the influx of patients. Little is known about the characteristics and outcomes of patients seeking care at multidisciplinary post-COVID centers. METHODS We performed a retrospective cohort study of patients evaluated at our multidisciplinary Comprehensive COVID-19 Center (CCC) in Chicago, IL, between May 2020 and February 2022. We analyzed specialty clinic utilization and clinical test results according to severity of acute COVID-19. RESULTS We evaluated 1802 patients a median of 8 months from acute COVID-19 onset, including 350 post-hospitalization and 1452 non-hospitalized patients. Patients were seen in 2361 initial visits in 12 specialty clinics, with 1151 (48.8%) in neurology, 591 (25%) in pulmonology, and 284 (12%) in cardiology. Among patients tested, 742/878(85%) reported decreased quality of life, 284/553(51%) had cognitive impairment, 195/434(44.9%) had alteration of lung function, 249/299(83.3%) had abnormal CT chest scans, and 14/116(12.1%) had elevated heart rate on rhythm monitoring. Frequency of cognitive impairment and pulmonary dysfunction was associated with severity of acute COVID-19. Non-hospitalized patients with positive SARS-CoV-2 testing had similar findings than those with negative or no test results. CONCLUSIONS The CCC experience shows common utilization of multiple specialists by long COVID patients, who harbor frequent neurologic, pulmonary, and cardiologic abnormalities. Differences in post-hospitalization and non-hospitalized groups suggest distinct pathogenic mechanisms of long COVID in these populations.
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Affiliation(s)
- Joseph Bailey
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University.
| | - Bianca Lavelle
- McGaw Medical Center, Northwestern University Feinberg School of Medicine
| | - Janet Miller
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Millenia Jimenez
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Patrick H Lim
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Zachary S Orban
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Jeffrey R Clark
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Ria Tomar
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Amy Ludwig
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Sareen T Ali
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Grace K Lank
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Allison Zielinski
- Division of Cardiology, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Ruben Mylvaganam
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Ravi Kalhan
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Malek El Muayed
- Division of Endocrinology, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - R Kannan Mutharasan
- Division of Cardiology, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Eric M Liotta
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Charles Davidson
- Division of Cardiology, Department of Medicine, Feinberg School of Medicine, Northwestern University
| | - Igor J Koralnik
- Davee Department of Neurology, Feinberg School of Medicine, Northwestern University
| | - Marc A Sala
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University
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Donnino M, Howard P, Mehta S, Silverman J, Cabrera MJ, Yamin JB, Balaji L, Berg KM, Heydrick S, Edwards R, Grossestreuer AV. Psychophysiologic Symptom Relief Therapy (PSRT) for Post-acute Sequelae of COVID-19. Mayo Clin Proc Innov Qual Outcomes 2023; 7:S2542-4548(23)00028-0. [PMID: 37361483 PMCID: PMC10196153 DOI: 10.1016/j.mayocpiqo.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/28/2023] Open
Abstract
Objective To determine if psychophysiologic symptom relief therapy (PSRT) will reduce symptom burden in patients suffering from post-acute sequelae of COVID-19 (PASC) who had mild/moderate acute COVID-19 disease without objective evidence of organ injury. Patients and Methods Twenty-three adults under the age of 60 with PASC for at least 12 weeks following COVID-19 infection were enrolled in an interventional cohort study conducted via virtual platform between May 18, 2021 and August 7, 2022. Participants received PSRT during a 13 week (approximately 44 hour) course. Participants were administered validated questionnaires at baseline and at 4, 8, and 13 weeks. The primary outcome was change in somatic symptoms from baseline, measured using the Somatic Symptom Scale-8 (SSS-8), at 13 weeks. Results The median duration of symptoms prior to joining the study was 267 days (IQR: 144, 460). The mean SSS-8 score of the cohort decreased from baseline by 8.5 (95% CI: 5.7-11.4), 9.4 (95% CI: 6.9-11.9), and 10.9 (95% CI: 8.3-13.5) at 4, 8, and 13 weeks respectively (all p<.001). Participants also experienced statistically significant improvements across other secondary outcomes including changes in dyspnea, fatigue, and pain (all p<.001). Conclusion PSRT may effectively decrease symptom burden in patients suffering from PASC without evidence of organ injury. The study was registered on clinicaltrials.gov (NCT04854772).
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Affiliation(s)
- Michael Donnino
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
- Division of Pulmonary, Critical Care, and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Patricia Howard
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Shivani Mehta
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
- New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY
| | - Jeremy Silverman
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Maria J. Cabrera
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Jolin B. Yamin
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Lakshman Balaji
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Katherine M. Berg
- Division of Pulmonary, Critical Care, and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Stanley Heydrick
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Robert Edwards
- Department of Anesthesiology, Pain Management Center, Brigham and Women’s Hospital, Harvard Medical School, Chestnut Hill, MA
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47
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Narasimhan B, Calambur A, Moras E, Wu L, Aronow W. Postural Orthostatic Tachycardia Syndrome in COVID-19: A Contemporary Review of Mechanisms, Clinical Course and Management. Vasc Health Risk Manag 2023; 19:303-316. [PMID: 37204997 PMCID: PMC10187582 DOI: 10.2147/vhrm.s380270] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/09/2023] [Indexed: 05/21/2023] Open
Abstract
The long-term implications of COVID-19 have garnered increasing interest in recent months, with Long-COVID impacting over 65 million individuals worldwide. Postural orthostatic tachycardia syndrome (POTS) has emerged as an important component of the Long-COVID umbrella, estimated to affect between 2 and 14% of survivors. POTS remains very challenging to diagnose and manage - this review aims to provide a brief overview of POTS as a whole and goes on to summarize the available literature pertaining to POTS in the setting of COVID-19. We provide a review of available clinical reports, outline proposed pathophysiological mechanisms and end with a brief note on management considerations.
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Affiliation(s)
- Bharat Narasimhan
- Department of Cardiology, Debakey Cardiovascular Institute, Houston Methodist, Houston, TX, USA
| | | | - Errol Moras
- Department of Medicine, Icahn School of Medicine; Mount Sinai, New York, NY, USA
| | - Lingling Wu
- Department of Medicine, East Carolina University, Greenvile, NC, USA
| | - Wilbert Aronow
- Department of Cardiology, Westchester Medical Center, Valhalla, NY, USA
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48
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Becker RC. Evaluating chest pain in patients with post COVID conditions permission to think outside of the box. J Thromb Thrombolysis 2023; 55:592-603. [PMID: 37052772 PMCID: PMC10098243 DOI: 10.1007/s11239-023-02808-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/05/2023] [Indexed: 04/14/2023]
Abstract
Chest pain is among the most common symptoms of post-COVID-19 Conditions (PCC) that prompts medical attention. Because the SARS-CoV-2 virus has proclivity for many organs and organ systems in the chest, ranging from the heart, lungs, great vessels, lymphatics, and peripheral nerves, clinicians evaluating patients with chest pain must consider a broad differential diagnosis and take a comprehensive approach to management.
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49
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Suh HW, Kwon CY, Lee B. Long-Term Impact of COVID-19 on Heart Rate Variability: A Systematic Review of Observational Studies. Healthcare (Basel) 2023; 11:healthcare11081095. [PMID: 37107929 PMCID: PMC10137929 DOI: 10.3390/healthcare11081095] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) sequelae (or long COVID) has become a clinically significant concern. Several studies have reported the relationship between heart rate variability (HRV) parameters and COVID-19. This review investigates the long-term association between COVID-19 and HRV parameters. Four electronic databases were searched up to 29 July 2022. We included observational studies comparing HRV parameters (measurement durations: 1 min or more) in participants with and without a history of COVID-19. We used assessment tools developed by the National Heart, Lung, and Blood Institute group to evaluate the methodological quality of included studies. Eleven cross-sectional studies compared HRV parameters in individuals who recovered from acute COVID-19 infection to controls (n = 2197). Most studies reported standard deviation of normal-to-normal intervals (SDNN) and root mean square of the successive differences. The methodological quality of the included studies was not optimal. The included studies generally found decreased SDNN and parasympathetic activity in post-COVID-19 individuals. Compared to controls, decreases in SDNN were observed in individuals who recovered from COVID-19 or had long COVID. Most of the included studies emphasized parasympathetic inhibition in post-COVID-19 conditions. Due to the methodological limitations of measuring HRV parameters, the findings should be further validated by robust prospective longitudinal studies.
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Affiliation(s)
- Hyo-Weon Suh
- Health Policy Research Team, Division of Healthcare Research, National Evidence-Based Healthcare Collaborating Agency, 400 Neungdong-ro, Gwangjin-gu, Seoul 04933, Republic of Korea
| | - Chan-Young Kwon
- Department of Oriental Neuropsychiatry, College of Korean Medicine, Dong-Eui University, Busan 47227, Republic of Korea
| | - Boram Lee
- KM Science Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 34054, Republic of Korea
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50
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Van der Feltz-Cornelis CM, Moriarty AS, Strain WD. Neurological Dysfunction in Long COVID Should Not Be Labelled as Functional Neurological Disorder. Viruses 2023; 15:783. [PMID: 36992491 PMCID: PMC10059786 DOI: 10.3390/v15030783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 03/17/2023] [Indexed: 03/22/2023] Open
Abstract
There have been suggestions that Long COVID might be purely functional (meaning psychological) in origin. Labelling patients with neurological dysfunction in Long COVID as having functional neurological disorder (FND) in the absence of proper testing may be symptomatic of that line of thought. This practice is problematic for Long COVID patients, as motor and balance symptoms have been reported to occur in Long COVID frequently. FND is characterized by the presentation of symptoms that seem neurological but lack compatibility of the symptom with a neurological substrate. Although diagnostic classification according to the ICD-11 and DSM-5-TR is dependent predominantly on the exclusion of any other medical condition that could account for the symptoms, current neurological practice of FND classification allows for such comorbidity. As a consequence, Long COVID patients with motor and balance symptoms mislabeled as FND have no longer access to Long COVID care, whereas treatment for FND is seldom provided and is ineffective. Research into underlying mechanisms and diagnostic methods should explore how to determine whether motor and balance symptoms currently diagnosed as FND should be considered one part of Long COVID symptoms, in other words, one component of symptomatology, and in which cases they correctly represent FND. Research into rehabilitation models, treatment and integrated care are needed, which should take into account biological underpinnings as well as possible psychological mechanisms and the patient perspective.
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Affiliation(s)
| | - Andrew S. Moriarty
- Department of Health Sciences, Hull York Medical School, (HYMS), University of York, York YO10 5DD, UK
| | - William David Strain
- Diabetes and Vascular Medicine Research Centre, Institute of Biomedical and Clinical Science, College of Medicine and Health, University of Exeter, Exeter EX2 5AX, UK
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