Extracellular and Intracellular Volume Variations During Postural Change Measured by Segmental and Wrist-Ankle Bioimpedance Spectroscopy

2004 ◽  
Vol 51 (1) ◽  
pp. 166-175 ◽  
Author(s):  
M. Fenech ◽  
M.Y. Jaffrin
Keyword(s):  
Bioimpedance Spectroscopy ◽  
Postural Change ◽  
Intracellular Volume

Use of impedance ratios to assess hand swelling in lymphoedema

2014 ◽  
Vol 29 (2) ◽  
pp. 83-89 ◽  
Author(s):  
E S Dylke ◽  
H Alsobayel ◽  
L C Ward ◽  
M Liu ◽  
E Webb ◽  
...  
Keyword(s):  
Dominant Hand ◽  
Bioimpedance Spectroscopy ◽  
Postural Change ◽  
Promising Tool ◽  
Volume Measurements ◽  
History Of ◽  
Hand Volume ◽  
Change Position ◽  
Head Height ◽  
Device Interaction

Objectives To determine whether bioimpedance spectroscopy was suitable for detection of hand lymphoedema. Methods The hands of 50 participants without a history of lymphoedema were measured with perometry and bioimpedance spectroscopy after positioning two ways for three minutes: (a) both hands rested at heart height and (b) the dominant hand at heart height and the non-dominant hand at head height. In addition, 10 women with secondary hand lymphoedema were also measured. Results Impedance and volume measurements were found to be strongly related (dominant hand r = −0.794). Both measurements were reliable (ICC2,1 = 0.900–0.967 and 0.988–0.996, respectively). Impedance was more sensitive to small changes in hand volume due to the postural change (position × device interaction: F = 23.9, P < 0.001). Finally, impedance measurements had better discrimination of women with lymphoedema than volume measurements. Conclusions Bioimpedance spectroscopy is a promising tool for the detection of secondary hand lymphoedema.

scholarly journals Intravenous Fluid Challenge Decreases Intracellular Volume: A Bioimpedance Spectroscopy-Based Crossover Study in Healthy Volunteers

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Matthäus Ernstbrunner ◽  
Barbara Kabon ◽  
Oliver Zotti ◽  
Markus Zeitlinger ◽  
Carolin Berner ◽  
...  
Keyword(s):  
Crossover Study ◽  
Healthy Volunteers ◽  
Fluid Challenge ◽  
Intravenous Fluid ◽  
Bioimpedance Spectroscopy ◽  
Intracellular Volume

Evaluating Responses of Circulatory Systems, Sweating and Pupil Diameter to Postural Change

2018 ◽  
Vol 138 (9) ◽  
pp. 1141-1147
Author(s):  
Munemichi Tateyama ◽  
Ikuhide Kinoshita ◽  
Akihiko Akao ◽  
Sho Shirasaka ◽  
Takashi Numata ◽  
...  
Keyword(s):  
Pupil Diameter ◽  
Postural Change

scholarly journals A bioimpedance spectroscopy technique to monitor bioprocess involving complex growth micro-organisms

AIP Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 065032
Author(s):  
Marcos Antonio Salvino da Silva ◽  
Elizabeth Gomes Sanches ◽  
Nei Pereira ◽  
Marcio Nogueira de Souza ◽  
Alexandre Visintainer Pino
Keyword(s):  
Bioimpedance Spectroscopy ◽  
Spectroscopy Technique ◽  
Micro Organisms

Cardiovascular Response During Postural Change in the Elderly

1990 ◽  
Vol 45 (1) ◽  
pp. M20-M25 ◽  
Author(s):  
I. B. Goldstein ◽  
D. Shapiro
Keyword(s):  
Cardiovascular Response ◽  
The Elderly ◽  
Postural Change

scholarly journals Cerebral Autoregulation during Postural Change in Patients with Cervical Spinal Cord Injury—A Carotid Duplex Ultrasonography Study

Diagnostics ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1321
Author(s):  
Joo-Hyun Kee ◽  
Jun-Hyeong Han ◽  
Chang-Won Moon ◽  
Kang Hee Cho
Keyword(s):  
Blood Pressure ◽  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Blood Flow ◽  
Cerebral Autoregulation ◽  
Duplex Ultrasonography ◽  
Postural Change ◽  
Carotid Duplex ◽  
Cord Injury ◽  
Carotid Duplex Ultrasonography

Patients with a spinal cord injury (SCI) frequently experience sudden falls in blood pressure during postural change. Few studies have investigated whether the measurement of blood flow velocity within vessels can reflect brain perfusion during postural change. By performing carotid duplex ultrasonography (CDU), we investigated changes in cerebral blood flow (CBF) during postural changes in patients with a cervical SCI, determined the correlation of CBF change with presyncopal symptoms, and investigated factors affecting cerebral autoregulation. We reviewed the medical records of 100 patients with a cervical SCI who underwent CDU. The differences between the systolic blood pressure, diastolic blood pressure, and CBF volume in the supine posture and after 5 min at 50° tilt were evaluated. Presyncopal symptoms occurred when the blood flow volume of the internal carotid artery decreased by ≥21% after tilt. In the group that had orthostatic hypotension and severe CBF decrease during tilt, the body mass index and physical and functional scores were lower than in other groups, and the proportion of patients with a severe SCI was high. The higher the SCI severity and the lower the functional score, the higher the possibility of cerebral autoregulation failure. CBF should be assessed by conducting CDU in patients with a high-level SCI.

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