| Power spectral analysis of blood pressure variability in traumatic quadriplegic humans. | |
| | |
MedLine Citation:
|
PMID: 2000979 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
A study was performed on seven traumatic neurologically complete quadriplegic (QP) males and seven age-matched healthy males (control) while they were at rest in the supine position in a climatic chamber (temperature 30 degrees C, relative humidity 60%). Arterial blood pressure waveforms were measured by a continuous noninvasive blood pressure-monitoring system based on arterial tonometry. Furthermore, the spontaneous beat-to-beat systolic blood pressure (SBP) variabilities of subjects were investigated by means of autoregressive power spectral analysis. As shown by earlier studies with an invasive (intra-arterial) blood pressure-monitoring system, in the control group there were two major spectral components: a high-frequency (HF) component [center frequency 0.27 +/- 0.02 (SE) Hz eq, power 0.9 +/- 0.2 mmHg2] and a low-frequency (LF) component (0.10 +/- 0.01 Hz eq, 5.2 +/- 1.4 mmHg2). On the contrary, in the QP group only the HF component was observed (0.28 +/- 0.03 Hz eq, 3.2 +/- 1.4 mmHg2). The results suggest that 1) in the QP subject the disappearance of the LF component in the SBP variability (i.e., the Mayer waves in humans) is presumably caused by the interruption of the spinal pathways linking supraspinal cardiovascular centers with the peripheral sympathetic outflow and 2) the cervical spinal sympathetic pathways may be instrumental in the genesis of the Mayer waves in humans. |
| | |
Authors:
|
K Inoue; S Miyake; M Kumashiro; H Ogata; T Ueta; T Akatsu |
Related Documents
:
|
21173809 - Evaluation of the appropriate root pressure for maintaining heartbeat during an aortic ... 20719579 - Acute superoxide scavenging restores depressed baroreflex sensitivity in renovascular h... 15471979 - Feedback effects of circulating norepinephrine on sympathetic outflow in healthy subjects. 9473649 - Paradoxical sympathetic nerve response to baroreceptor reflex activation 8933009 - Assessment of baroreceptor-cardiac reflex sensitivity using time domain analysis in pat... 11914109 - Advanced analysis of spontaneous baroreflex sensitivity, blood pressure and heart rate ... 9535459 - Inhaled nitric oxide is not a myocardial depressant in a porcine model of heart failure. 10149489 - Devices and monitoring during neonatal ecmo: survey results. 22747619 - The development and validation of the hypertension evaluation of lifestyle and manageme... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The American journal of physiology Volume: 260 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1991 Mar |
Date Detail:
|
Created Date: 1991-04-11 Completed Date: 1991-04-11 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 0370511 Medline TA: Am J Physiol Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: H842-7 Citation Subset: IM |
Affiliation:
|
Department of Ergonomics, University of Occupational and Environmental Health, Kitakyushu, Japan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Blood Pressure* Heart Rate Humans Male Quadriplegia / etiology*, physiopathology Rest Spectrum Analysis Spinal Cord Injuries / complications* Supination |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Coronary vascular smooth muscle function in E. coli endotoxemia in dogs.
Next Document: Endothelial regulation of wall shear stress and blood flow in skeletal muscle microcirculation.