Sympathetic and baroreflex cardiovascular control in hypertension-related left ventricular dysfunction

Guido Grassi, Gino Seravalle, Fosca Quarti-Trevano, Raffaella Dell'Oro, Francesca Arenare, Domenico Spaziani, Giuseppe Mancia

Research output: Contribution to journalArticlepeer-review

Abstract

The sympathetic overdrive that characterizes essential hypertension is potentiated when left ventricular hypertrophy or congestive heart failure is detected. No information exists, however, on whether this is the case also for left ventricular diastolic dysfunction. In 17 untreated hypertensive subjects with left ventricular diastolic dysfunction (age: 47.7±2.9 years, mean±SEM), we measured sympathetic nerve traffic (microneurography), heart rate (ECG), and beat-to-beat arterial blood pressure (Finapres) at rest and during baroreceptor deactivation and stimulation. Data were compared with those collected in 20 age-matched normotensive and 20 hypertensive subjects without a diastolic function impairment. Muscle sympathetic nerve traffic values were markedly and significantly greater in the 2 hypertensive groups than in the normotensive one (55.3± 1.2 and 71.2± 1.6 versus 41.7±1.0 bursts per 100 heartbeats, respectively; P

Original languageEnglish
Pages (from-to)205-209
Number of pages5
JournalHypertension
Volume53
Issue number2
DOIs
Publication statusPublished - Feb 2009

Keywords

  • Baroreceptors
  • Diastole
  • Hypertension
  • Nervous system
  • Reflex
  • Sympathetic

ASJC Scopus subject areas

  • Internal Medicine

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