Effects of Repeated Valsalva Maneuver Straining on Cardiac and Vasoconstrictive Baroreflex Responses

Abstract

We hypothesized that repeated respiratory straining maneuvers (repeated SM) designed to elevate arterial BPs (arterial baroreceptor loading) would acutely increase baroreflex responses. Methods: We tested this hypothesis by measuring cardiac baroreflex responses to carotid baroreceptor stimulation (neck pressures), and changes in heart rate and diastolic BP after reductions in BP induced by a 15-s Valsalva maneuver in 10 female and 10 male subjects at 1, 3, 6, and 24 h after performing repeated SM. Baroreflex responses were also measured in each subject at 1, 3, 6, and 24 h at the same time on a separate day without repeated SM (control) in a randomized, counter- balanced cross-over experimental design.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2003
Accession Number
ADA630775

Entities

People

  • Claude Nguyen
  • David A. Ludwig
  • Donald F. Doerr
  • Duane A. Ratliff
  • Erik Benedetti
  • Gary W. Muniz
  • Jeff Wang
  • Jose Chavarria
  • Susan Koreen
  • Victor A Convertino

Organizations

  • United States Army Institute of Surgical Research

Tags

Communities of Interest

  • Biomedical
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Biological Sciences
  • Data Science
  • Department Of Defense
  • Heart Rate
  • Hypotension
  • Information Science
  • Linear Regression Analysis
  • Maneuvers
  • Measurement
  • Menstrual Cycle
  • Military Operations
  • Pressure Gages
  • Respiratory Physiological Phenomena
  • Standards
  • Statistical Analysis
  • Vascular Diseases

Fields of Study

  • Biology

Readers

  • Cardiovascular Physiology