| Effect of the Valsalva maneuver on cardiac-coronary interaction assessed by wave intensity analysis. | |
| | |
MedLine Citation:
|
PMID: 21096874 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
The Valsalva maneuver (VM) provokes strong changes in the cardiovascular system and is therefore well suited to study the cardiac-coronary interaction in humans. In 12 patients undergoing catheterization we simultaneously recorded aortic pressure, left ventricular pressure, and intracoronary pressure (Pd) and flow velocity (U) while the patients were performing a VM. Coronary wave intensity was calculated (dI = dP*dU) at characteristic phases of the VM and related to hemodynamic parameters of left ventricular (LV) performance. During the strain, blood pressure increased transiently followed by a significant decrease (p〈0.001) at maximum strain. Changes in mean LV pressure followed the same pattern, while LV end-diastolic pressure increased to almost 40 mmHg (p〈0.001), with a 30% reduction in LV dP/dt (p〈0.005). Coronary flow velocity remained fairly constant throughout the VM. All hemodynamic values returned to the baseline at conclusion of the maneuver. Coronary wave intensity was strongly reduced during the strain and was related to the depression in LV performance. Wave intensity analysis clearly revealed the inherent features of cardiac-coronary interaction. |
| | |
Authors:
|
M Rolandi; Maurice Remmelink; Froukje Nolte; Jan Baan; Jan J Piek; Jos A E Spaan; Maria Siebes |
Related Documents
:
|
17302714 - Effects of stimulation site on diastolic function in cardiac resynchronization therapy. 11547274 - Left ventricular systolic and diastolic functional abnormalities in asymptomatic patien... 15826264 - Cardiac resynchronization induces favorable neurohumoral changes. 20848344 - Extracorporeal membrane oxygenation induced cardiac dysfunction in newborn lambs. 22680734 - Equilibrium fluid-solid coexistence of hard spheres. 9647944 - Engineering analysis of penile hemodynamic and structural-dynamic relationships: part i... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference Volume: 1 ISSN: 1557-170X ISO Abbreviation: Conf Proc IEEE Eng Med Biol Soc Publication Date: 2010 |
Date Detail:
|
Created Date: 2010-11-24 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101243413 Medline TA: Conf Proc IEEE Eng Med Biol Soc Country: United States |
Other Details:
|
Languages: eng Pagination: 3776-9 Citation Subset: IM |
Affiliation:
|
Department of Biomedical Engineering and Physics at the Academic Medical Center, University of Amsterdam, 1105AZ, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: RMAIS: RFID-based medication Adherence Intelligence System.
Next Document: Coronary flow reserve in mice: effects of age, coronary disease, and vascular loading.