Heart intertwined with sleeping legs.

Night Moves: How Sleep Impacts Heart Health in Heart Failure Patients

"Discover the surprising link between periodic leg movements during sleep and increased risks for those with acute decompensated heart failure."


Heart failure (HF) remains a significant health challenge, marked by high rates of hospitalization and mortality, despite advancements in treatment. Acute decompensated heart failure (ADHF), a condition where heart failure symptoms suddenly worsen, often leads to hospital stays and further progression of the disease. Identifying risk factors that contribute to readmission and death among ADHF patients is vital for improving comprehensive heart care.

One area of growing interest is the role of periodic leg movements during sleep (PLM). PLM is characterized by repetitive leg movements that occur during sleep. While PLM is common in the general population, it's especially prevalent in individuals with chronic heart failure. Studies suggest PLM may predict adverse outcomes in these patients. However, the impact of PLM on hospitalized patients with reduced left ventricular ejection fraction (LVEF) following an ADHF episode has remained largely unexplored.

A recent study investigated the relationship between PLM and clinical outcomes in patients hospitalized for ADHF with reduced LVEF. The study aimed to determine if PLM could serve as a valuable indicator of risk for readmission or death in this vulnerable population.

What are Periodic Leg Movements and Why Do They Matter in Heart Failure?

Heart intertwined with sleeping legs.

Periodic leg movements during sleep (PLM) are rhythmic, repetitive movements of the legs that occur during sleep. These movements can range from subtle twitches to more pronounced jerks and typically occur every 20 to 40 seconds. While most people are unaware of these movements, they can disrupt sleep and lead to daytime fatigue.

In individuals with heart failure, PLM is more common than in the general population. The reasons for this increased prevalence are not entirely clear, but several factors may contribute:
  • Reduced Blood Flow: Heart failure can lead to decreased blood flow to the legs, potentially triggering PLM.
  • Nerve Dysfunction: Heart failure may affect nerve function, increasing the likelihood of involuntary leg movements.
  • Medications: Some medications used to treat heart failure may contribute to PLM.
  • Sleep Disordered Breathing: Conditions like sleep apnea that are common in heart failure patients may exacerbate PLM.
Given the potential impact of PLM on sleep quality and overall health, understanding its role in heart failure is crucial. The study we're discussing sheds light on this connection in a specific group of patients: those hospitalized for ADHF with reduced LVEF.

What's Next? Taking Control of Your Sleep and Heart Health

This study underscores the importance of addressing sleep-related issues in patients with heart failure, particularly those recovering from an ADHF episode. While more research is needed to fully understand the cause-and-effect relationship between PLM and adverse outcomes, it's clear that identifying and managing PLM could be a valuable component of comprehensive heart failure care. If you have heart failure and experience restless sleep or suspect you may have periodic leg movements, talk to your doctor. They can assess your sleep patterns and recommend appropriate strategies to improve your sleep quality and protect your heart health.

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