Transcranial Direct Current Stimulation (tDCS) for Post COVID-19 Fatigue
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About
The objective of this study is to investigate the short- and long-term effects of multiple sessions of 4 mA M1 tDCS on fatigue and brain activity in recovered COVID-19 patients using established measures of perception of fatigue, performance fatigability, and cerebral glucose uptake. Our central hypothesis is that tDCS will improve fatigue short- and long-term, and thus will improve quality of life (QOL) in recovered COVID-19 patients and that these changes will be associated with alterations in brain activity.
Full description
For survivors of severe COVID-19, overcoming the virus is just the beginning of an uncharted recovery path. As the number of confirmed COVID-19 cases exceeds 27 million globally and 6 million in the US, the number of patients who experience persistent symptoms during recovery is rapidly growing. In COVID-19 patients, common acute symptoms include cough, fever, dyspnea, musculoskeletal symptoms (myalgia, joint pain, fatigue), gastrointestinal symptoms, and anosmia/dysgeusia . Clinicians and researchers have focused on the acute phase of COVID-19, but continued monitoring and treating of persistent symptoms is urgently needed. Recent studies assessed persistent symptoms in patients who were discharged from the hospital after recovering from COVID-19. None of the patients had a fever or any of the other signs or symptoms associated with acute illness. Nevertheless, decreased quality of life was observed in 44.1% and fatigue was reported by 53.1% and 71% of patients. Furthermore, persistent fatigue following COVID-19 infection is common and independent of severity of initial infection (hospitalized and non-hospitalized patients). In addition to the characteristic laboratory findings and lung computed tomography (CT) abnormalities, it has been recently reported that patients with COVID-19 also have neurological manifestations. Wu et al. [2020] found that viral infections have detrimental impacts on neurological functions and can even cause severe neurological damage. Their study showed that coronaviruses (CoV), especially severe acute respiratory syndrome CoV 2 (SARS-CoV-2), exhibited neurotropic properties and may cause neurological diseases with severe fatigue symptoms. Another recent case report has also indicated reduced glucose uptake ([18F]flurodeoxyglucose (FDG); measured with positron emission tomography (PET)) in diverse brain areas [9], which may contribute to these neurological manifestations. Therefore, there is a critical need to develop inexpensive, effective, and rapid treatments for the persistent fatigue experienced by recovered COVID-19 patients. Without such treatments, these patients will continue to experience fatiguing symptoms that significantly reduce their quality of life. One possible treatment modality is transcranial direct current stimulation (tDCS) [10]. tDCS uses weak currents applied to the scalp to alter the excitability of cortical neurons by changing their spontaneous firing rate. It also has a favorable safety profile and only transient adverse side effects. Studies in patients with neurological disorders have shown that tDCS over the primary motor and/or sensory cortex (M1/S1) consistently and significantly improves fatigue. M1 tDCS represents an easy, cost-effective candidate for treating persistent fatigue in recovered COVID-19 patients.
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Inclusion and exclusion criteria
Only those that are discharged from the UIHC COVID-19 inpatient clinic and/or that meet the CDC guidelines for discontinuing home isolation (i.e., fever free for at least 24 hours, all symptoms improved after 10 days) will initially be considered as long as they meet the rest of the following criteria:
Inclusion criteria
- 18-80 yrs.
- Meet CDC guidelines (https://www.cdc.gov/coronavirus/2019-ncov/hcp/duration-isolation.html) for discontinuation of home isolation
- Meet the criteria for fatigue, based on the Chalder Fatigue Scale CFQ-11 case definition of fatigue
- Healthy enough to complete the protocol based, on information obtained from a clinical exam and past medical history, such as cardiovascular disease.
- Comprehension of the protocol, as indicated by an ability to respond to questions about the study after reading the consent form.
- Able to use and be contacted by telephone
- Able to speak, read, and understand English, and complete questionnaires in English
Exclusion criteria
- Medical diagnosis or condition that is considered to be an absolute or relative contraindication to participating in exercise training, such as major renal, pulmonary, hepatic, cardiac, gastrointestinal, HIV, cancer (other than treated basal cell cancer), or neurological disorders
- History/presence of secondary conditions such as seizure disorders (or on medications known to lower seizure threshold), hydrocephalus, diabetes mellitus, or claustrophobia
- Alcohol dependence or abuse (>2 drinks/day), or present history of drug abuse (last six months)
- History of significant traumatic brain injury or hydrocephalus
- Pregnancy
Trial design
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Interventional model
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74 participants in 4 patient groups
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Central trial contact
Thorsten Rudroff, PHD
Data sourced from clinicaltrials.gov
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