Long Covid and POTS: findings from multiple studies

Summary: Dizziness, rapid heart rate, and fatigue in Long Covid may be linked to POTS. Research highlights impacts on daily life and work.

Research Paper Title: Long Covid and autonomic dysfunction: findings from multiple studies
Author surname (Year): Raj et al. (2021); Dani et al. (2021)
Summarised by: S. Rajbally

Feeling dizzy when you stand? Heart racing for no clear reason? For some people with Long Covid, these symptoms are not just fatigue, they may reflect changes in how the body regulates heart rate and blood pressure.

In some cases, these symptoms are are not just fatigue, they may reflect to a condition known as postural orthostatic tachycardia syndrome (POTS).

Autonomic dysfunction is increasingly recognised in clinical settings as part of the Long Covid spectrum (Dani et al., 2021).

WHAT IS POTS?
Postural orthostatic tachycardia syndrome (POTS) is a condition where the heart rate increases abnormally when moving from lying down to standing, often causing dizziness, palpitations, and fatigue particularly on standing.

WHY THIS MATTERS FOR HEALTHCARE WORKERS
Symptoms such as dizziness, fatigue, and rapid heart rate can make it difficult to stand for long periods, concentrate, or carry out physically and mentally demanding roles, particularly in clinical settings where sustained physical and cognitive performance is required.

1. Key Message

Autonomic dysfunction, including postural orthostatic tachycardia syndrome (POTS), is increasingly recognised in Long Covid and may contribute to symptoms such as dizziness, palpitations, and fatigue, with implications for daily functioning, particularly for healthcare workers exposed to prolonged standing and physical demands (Raj et al., 2021; Dani et al., 2021).

2. Key Points

·      Autonomic dysfunction is commonly reported in Long Covid (Dani et al., 2021)

·      Symptoms include dizziness, palpitations, fatigue, and cognitive difficulties

·      POTS (a condition where heart rate increases abnormally on standing) is frequently identified (Raj et al., 2021)

·      Symptoms can significantly affect ability to stand, concentrate, and work (Dani et al., 2021)

·      Evidence suggests dysregulation of the autonomic nervous system, although mechanisms are still being studied

·      Symptoms may be under-recognised or misattributed to anxiety or deconditioning

3. What Was This Study About?

These studies examined whether Long Covid is associated with dysfunction of the autonomic nervous system, which controls automatic body functions such as heart rate and blood pressure (Raj et al., 2021; Dani et al., 2021).

They included clinical studies and review papers assessing symptoms, diagnostic findings, and potential mechanisms of autonomic dysfunction in people with Long Covid.

The aim was to understand how frequently these symptoms occur, how they present, and what this may mean for patient care.

4. What Did the Researchers Find?

Autonomic dysfunction is increasingly recognised in clinical practice as part of the Long Covid spectrum (Dani et al., 2021).

Symptoms commonly reported include dizziness on standing, rapid heart rate (tachycardia), fatigue, and cognitive difficulties often described as “brain fog” (Dani et al., 2021).

A number of patients meet criteria for postural orthostatic tachycardia syndrome (POTS), a condition where the heart rate increases abnormally when moving from lying down to standing, often leading to dizziness, palpitations, and reduced tolerance for standing or activity (Raj et al., 2021).

Emerging evidence suggests these symptoms may be linked to dysregulation of the autonomic nervous system, although mechanisms are not fully understood (Dani et al., 2021).

However, findings vary across studies, and there is currently no single diagnostic pathway or standardised definition. Therefore, results should be interpreted with caution due to variability in study design and the absence of standardised diagnostic criteria.

5. Why This Matters

For healthcare workers, symptoms such as dizziness, palpitations, and fatigue may affect ability to perform physically demanding roles, including prolonged standing and patient care.

For people with Long Covid, autonomic dysfunction may be overlooked or, in some cases, misattributed to anxiety or deconditioning, delaying recognition and management (Dani et al., 2021)

Autonomic dysfunction in Long Covid represents a clinically relevant but still evolving area of research requiring further investigation and consideration in return-to-work decisions.

6. Read the Full Research Paper

Read study: Autonomic dysfunction in Long COVID (Dani et al., 2021)

Read study: POTS and Long COVID(Raj et al., 2021)