| Estimated right ventricular systolic time intervals for the assessment of right ventricular function in acute respiratory distress syndrome. | |
| | |
MedLine Citation:
|
PMID: 18838944 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Right ventricular (RV) systolic time intervals (STIs) have been shown to accurately reflect RV function in patients with acute respiratory distress syndrome (ARDS). The measurement of RVSTIs requires phonocardiography to define the time of RV end systole. If RV end-systolic pressure (RVESP) can be derived from peak pulmonary artery (PA) systolic pressure, then the time of RV end systole, and hence, RVSTIs can be deduced without phonocardiography. We tested this possibility. In 34 patients with ARDS, RVESP was determined on the PAP curve at RV end systole, which was defined by phonocardiography. The ratios of RVESP/peak PA systolic pressure were obtained in each patient, the mean of which was 0.90 +/- 0.006. With an application of this value, the estimated RVSTIs were determined in other groups of patients. Right ventricular end-systolic pressure was estimated from the peak PA systolic pressure by multiplying 0.9. Then the point of RV end systole was determined on the electrocardiographic tracing that coincided with the point of RVESP on the PAP curve by simultaneous display of electrocardiograph and PAP curve. Total electromechanical systole was measured from the onset of the QRS complex to the point of RV end systole on the electrocardiograph. The onset of RV ejection was defined by PAP curve. The validity of this estimated RVSTIs was tested by comparing with the measured RVSTIs. By Bland-Altman analysis, the mean difference in RVSTIs between the two methods was 0.007, and bias was 0.0036, suggesting close agreement. The estimated RVSTIs can be used to accurately assess RV function. |
| | |
Authors:
|
Charles Her; Hideo Koike; James O'Connell |
Related Documents
:
|
9809924 - Angiotensin-converting enzyme (ace) inhibitors revert abnormal right ventricular fillin... 16554314 - Persistent and reversible cardiac dysfunction among amateur marathon runners. 14551244 - Developmental changes in ventricular diastolic function correlate with changes in ventr... 12868784 - Cardiopulmonary support during electrophysiological procedures for ventricular tachycar... 8450564 - Surface behavior of axolemma monolayers: physico-chemical characterization and use as s... 20876534 - Acidic naadp-sensitive calcium stores in the endothelium: agonist-specific recruitment ... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Shock (Augusta, Ga.) Volume: 31 ISSN: 1540-0514 ISO Abbreviation: Shock Publication Date: 2009 May |
Date Detail:
|
Created Date: 2009-04-14 Completed Date: 2009-06-29 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9421564 Medline TA: Shock Country: United States |
Other Details:
|
Languages: eng Pagination: 460-5 Citation Subset: IM |
Affiliation:
|
Department of Anesthesiology, Westchester Medical Center, Valhalla, NY 10595, USA. charles6133@msn.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Electrocardiography Female Heart Ventricles / pathology, physiopathology* Humans Male Middle Aged Phonocardiography Respiratory Distress Syndrome, Adult / pathology, physiopathology* Systole / physiology* Ventricular Function, Right / physiology* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Modulation of the Bcl-2 family blocks sepsis-induced depletion of dendritic cells and macrophages.
Next Document: Erythropoietin enhances oxygenation in critically perfused tissue through modulation of nitric oxide...