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Bradycardia in frontotemporal dementia

A Robles Bayón1, F Gude Sampedro2, J M Torregrosa Quesada3

  • 1Unidad de Neurología cognitiva, Hospital La Rosaleda, Santiago de Compostela, España.

Neurologia (Barcelona, Spain)
|April 23, 2013
PubMed

Insights

Patients with frontotemporal dementia (FTD) experienced significantly more bradycardia (slow heart rate) than other cognitive impairment groups. This suggests a potential link between FTD and autonomic dysfunction, warranting further investigation.

Area of Science:

  • Neuroscience
  • Cardiology
  • Neurology

Background:

  • Brain regions controlling heart rate, including the medial frontal cortex and amygdala, are affected by frontotemporal dementia (FTD).
  • Degeneration in these areas may lead to autonomic nervous system dysfunction and cardiovascular symptoms like bradycardia.
  • Autonomic dysfunction, specifically non-cardiogenic bradycardia, is explored as a potential indicator in FTD.

Purpose of the Study:

  • To determine if non-cardiogenic bradycardia is more prevalent in patients with frontotemporal dementia (FTD) compared to other cognitive impairment groups.
  • To investigate the association between FTD and cardiovascular autonomic dysfunction.

Main Methods:

  • Heart rates were recorded for 258 patients with cognitive symptoms, including 36 with FTD.
  • Patients with primary cardiac arrhythmias were excluded from the study.
  • Participants included those with Alzheimer disease, vascular dementia, other dementias, and non-dementia cognitive impairment.

Main Results:

  • Bradycardia (<60 beats/minute) was significantly more frequent in patients with frontotemporal dementia (FTD).
  • This finding persisted even after excluding individuals on bradycardia-inducing medications.
  • FTD patients also exhibited lower mean systolic blood pressure and a higher prevalence of hypotension.

Conclusions:

  • Bradycardia is more common in patients with frontotemporal dementia (FTD) than in other cognitive impairment cohorts.
  • The results suggest a potential role for bradycardia as a diagnostic marker for FTD, particularly its behavioral variant.
  • Further research is needed to confirm bradycardia as a supportive diagnostic sign for FTD.
Abstract

Keywords:
AlzheimerAmygdalaAmígdalaBradicardiaBradycardiaDemencia frontotemporalFrontotemporal dementiaHipotensiónHypotensionInsulaÍnsula

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