Background Autonomic dysfunction may occur during the acute phase of COVID‐19. Heart
rate variability (HRV) is a useful tool for the assessment of cardiac sympathetic and …

Background The heart rate variability (HRV) is a non-invasive, objective and validated
method for the assessment of autonomic nervous system. Although acute manifestations of …

Background: Heart rate variability is a non-invasive, measurable, and established autonomic
nervous system test. Long-term COVID-19 sequelae are unclear; however, acute symptoms …

Objectives The novel corona virus disease, which was initially reported in China in late
2019, has become a global pandemic affecting 330 million cases. COVID-19 affects …

Abstract Post-COVID-19 Syndrome (PCS) is a condition with multiple symptoms partly
related to dysregulation of the autonomic nerve system. Assessment of heart rate variability …

Although several clinical manifestations of persistent long coronavirus disease (COVID-19)
have been documented, their effects on the cardiovascular and autonomic nervous system …

Coronavirus disease 2019 (COVID-19) sequelae (or long COVID) has become a clinically
significant concern. Several studies have reported the relationship between heart rate …

Background and Objectives: Analyzing the cardiac autonomic function in COVID-19 patients
can provide insights into the impact of the virus on the heart's regulatory mechanisms and its …

Introduction Cardiovascular dysautonomia comprising postural orthostatic tachycardia
syndrome (POTS) and orthostatic hypotension (OH) is one of the presentations in COVID-19 …

While the majority of individuals with coronavirus disease 2019 (COVID-19) recover
completely, a significant percentage experience persistent symptom, which has been …