Noninvasive investigation of blood pressure changes using the pulse wave transit time: a novel approach in the monitoring of hemodialysis patients
Abstract
Severe blood pressure changes are well known in hemodialysis. Detection and prediction of these are important for the well-being of the patient and for optimizing treatment. New noninvasive methods for this purpose are required. The pulse wave transit time technique is an indirect estimation of blood pressure, and our intention is to investigate whether this technique is applicable for hemodialysis treatment. A measurement setup utilizing lower body negative pressure and isometric contraction was used to simulate dialysis-related blood pressure changes in normal test subjects. Systolic blood pressure levels were compared to different pulse wave transit times, including and excluding the cardiac preejection period. Based on the results of these investigations, a pulse wave transit time technique adapted for dialysis treatment was developed and tried out on patients. To determine systolic blood pressure in the normal group, the total pulse wave transit time was found most suitable (including the cardiac preejection period). Correlation coefficients were r = 0.80 +/- 0.06 (mean +/- SD) overall and r = 0.81 +/- 0.16 and r = 0.09 +/- 0.62 for the hypotension and hypertension phases, respectively. When applying the adapted technique in dialysis patients, large blood pressure variations could easily be detected when present. Pulse wave transit time is correlated to systolic blood pressure within the acceptable range for a trend-indicating system. The method's applicability for dialysis treatment requires further studies. The results indicate that large sudden pressure drops, like those seen in sudden hypovolemia, can be detected.
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The Moens-Korteweg equation provides a linear relationship between PAT and BP.
“The Moens-Korteweg equation provides a linear relationship between PAT and BP (38 , 39).”
From Binodal, wireless epidermal electronic systems with in-sensor analytics for neonatal intensive care (2019) · cites this paper as [38]
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- Authors
- Ahlstrom, C., Johansson, A., Uhlin, F., Länne, T., & Ask, P.
- Affiliations
- Linköping University (SE)
- Linköping University Hospital (SE)
- Corresponding author
- Ahlstrom, Christer
- Venue
- Journal of Artificial Organs
- Published
- 2005-10-20
- Volume
- 8
- Issue
- 3
- Pages
- 192-197
- ISSN
- 1434-7229 (ISSN-L)
- 1619-0904
- OpenAlex
- W2047693489
- Cited by
- 104
- References
- 20
- Citations by year
- 2025: 1 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 2 · 2020: 8 · 2019: 10 · 2018: 7 · 2017: 5 · 2016: 8 · 2015: 6 · 2014: 10 · 2013: 4 · 2012: 2
- FWCI
- 4.68
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Journal of Artificial Organs (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
- Health Sciences › Medicine › Surgery › Hemodynamic Monitoring and Therapy
- Keywords
- pulse transit time, blood pressure monitoring, hemodialysis, non-invasive blood pressure estimation, systolic blood pressure, hypotension, hypertension, hypovolemia, lower body negative pressure, isometric contraction
- MeSH terms
- Adult, Aged, Blood Pressure, Blood Pressure Determination, Female, Renal Dialysis, Humans, Male, Monitoring, Physiologic, Pulse
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