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Velocity–pressure loops for continuous assessment of ventricular afterload: influence of pressure measurement site
Velocity–pressure loops for continuous assessment of ventricular afterload: influence of pressure measurement site
- Source :
- Journal of Clinical Monitoring and Computing, Journal of Clinical Monitoring and Computing, In press, pp.1-8. ⟨10.1007/s10877-017-0082-3⟩, Journal of Clinical Monitoring and Computing, Springer Verlag, In press, pp.1-8. ⟨10.1007/s10877-017-0082-3⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; VPloop, the graphical representation of pressure versus velocity, and its characteristic angles, GALA and β, can be used to monitor cardiac afterload during anesthesia. Ideally VPloop should be measured from pressure and velocity obtained at the same arterial location but standard of care usually provide either radial or femoral pressure waveforms. The purpose of this study was to look at the influence of arterial sites and the use of a transfer function (TF) on VPloop and its related angles. Invasive pressure signals were recorded in 25 patients undergoing neuroradiology intervention under general anesthesia with transesophageal flow velocity monitoring. Pressures were recorded in the descending thoracic aorta, abdominal aorta, femoral and radial arteries. We compared GALA and β from VPloops generated from each location and in high and low risk patients. GALA was similar in the central locations (55°[49–63], 52°[47–61] and 54°[45–62] from descending thoracic to femoral artery, median[interquartile], p = 0.10), while there was a difference in β angle (16°[4–27] to 8°[3–15], p
- Subjects :
- Adult
Male
medicine.medical_specialty
Cardiac output
Health Informatics
Blood Pressure
Femoral artery
030204 cardiovascular system & hematology
Anesthesia, General
anesthesia
Critical Care and Intensive Care Medicine
law.invention
flow velocity
03 medical and health sciences
left ventricular function
0302 clinical medicine
Afterload
[SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system
030202 anesthesiology
law
medicine.artery
Internal medicine
Monitoring, Intraoperative
medicine
Thoracic aorta
Humans
Prospective Studies
Aged
business.industry
Abdominal aorta
Hemodynamic Monitoring
cardiac output
afterload
Middle Aged
[SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system
Anesthesiology and Pain Medicine
Pressure measurement
Blood pressure
Flow velocity
Cardiology
Female
arterial pressure
business
Blood Flow Velocity
Subjects
Details
- Language :
- English
- ISSN :
- 13871307 and 15732614
- Database :
- OpenAIRE
- Journal :
- Journal of Clinical Monitoring and Computing, Journal of Clinical Monitoring and Computing, In press, pp.1-8. ⟨10.1007/s10877-017-0082-3⟩, Journal of Clinical Monitoring and Computing, Springer Verlag, In press, pp.1-8. ⟨10.1007/s10877-017-0082-3⟩
- Accession number :
- edsair.doi.dedup.....58606b568cab76f81e950ce9b0fcc787
- Full Text :
- https://doi.org/10.1007/s10877-017-0082-3