The relationship between arterial pulse-wave velocity and pulse frequency at different pressures

Callaghan, Frank; Babbs, Charles F.; Bourland, J. D.; Geddes, L. A.

doi:10.3109/03091908409032067

Cited by 63 publications

(37 citation statements)

References 7 publications

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“…Despite earlier in vivo pacing experiments suggesting an effect on PWV (24,26), other studies showed no relationship (1), and no effect of heart rate was observed under controlled conditions in vitro (8). The time course of the steadily slowing heart rate clearly did not correspond to the more complex pattern of changes in PWV observed in this study.…”

Section: Do the Observed Postexercise Changes In Pwv Reflect Changes contrasting

confidence: 47%

Arterial distensibility: acute changes following dynamic exercise in normal subjects

Naka¹,

Tweddel

Parthimos

et al. 2003

American Journal of Physiology-Heart and Circulatory Physiology

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Section: Do the Observed Postexercise Changes In Pwv Reflect Changes contrasting

confidence: 47%

Arterial distensibility: acute changes following dynamic exercise in normal subjects

Naka¹,

Tweddel

Parthimos

et al. 2003

American Journal of Physiology-Heart and Circulatory Physiology

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“…The accuracy of derived BP values was low in comparison with the conventional method. 29 In this study, BP was estimated based on PTT by the linear function but a number of authors obtained a nonlinear relationship between PTT and BP, [16][17][18] while others reported linear relations which was in consistent with our study. 20,22 In the present study, SBP was used to monitor BP based on PTT, because several studies have shown that SBP could be measured more accurately than diastolic blood pressure.…”

Section: Discussionsupporting

confidence: 79%

“…13 Pulse transition time (PTT) is another method, acting based on continuous recording of ECG and pulse wave. The main features of PTT method including safety, noninvasive and continuous BP monitoring has been documented in a vast array of studies, [14][15][16][17][18] but ECG recording impose another set of the complexity to hemodialysis. This study aimed to develop a system for continuous monitoring of BP in patients undergoing hemodialysis.…”

Section: Introductionmentioning

confidence: 99%

A new approach for detecting sudden hypotension in hemodialysis by using dual-channel optical system

Amin

Golmakani

Joharinia

2017

J. Innov. Opt. Health Sci.

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Dialysis hypotension is one of the most prevalence symptoms of dialysis and occurs in 40% of treatment sessions. Detection and prediction of hypotension is important for the well-being of the patient and for optimizing treatment. The aim of this study was to construct optical system to monitor blood pressure (BP) continuously and without cu® in hemodialysis based on pulse transit time (PTT) method. To measure the BP changes, dual-channel optical system were developed. In this study, individuals were classi¯ed into two groups of normal and hemodialysis. In both groups, BP and consequently PTT were earned three times in di®erent positions. After the initial calibration, the regression equation was drawn for each subject. In normal group, each subject was placed in the supine position and BP was measured both by designed system and sphygmomanometer cu®. During BP measurements, in addition to BP, blood pressure decline was also monitored by optical system. For hemodialysis group, the same measurement setup was adopted. In both groups, the error between cu® method and PTT was calculated. Correlation coe±cients for BP cuff vs BP PTT were calculated and Bland-Altman plot was performed for the normal and hemodialysis groups. In this study 16 subjects participated. The results for normal group showed that maximum di®erence between cu® method and the present method was 14 mmHg and for dialysis group was 16 mmHg. Bland-Altman plot in normal group revealed limits of agreement from À13.98 to 13.18 mmHg. Considering hemodialysis group, limits of agreement were from * Corresponding author. This is an Open Access article published by World Scienti¯c Publishing Company. It is distributed under the terms of the Creative Commons Attribution 4.0 (CC-BY) License. Further distribution of this work is permitted, provided the original work is properly cited. À15.94 to 13.88 mmHg. The correlation coe±cient was 0.74 for normal group and was 0.72 for hemodialysis group. The proposed system can monitor BP continuously and diagnose sudden hypotension. So it can be recommended as a useful method to indicate hypotension and can be used for dialysis unit.

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“…sympathetic nervous activity, circulating hormones) 31 and regional (e.g. endothelium-derived vasoactive substances, exercise muscle-derived metabolites), 32 HR (>120 bpm) 33 or simply by a more distended artery because of increased mean arterial pressure, 34 these SCI-specific conditions may cause variation in PWV.…”

Section: Discussionmentioning

confidence: 99%

Test–retest reliability of pulse wave velocity in individuals with chronic spinal cord injury

Miyatani

Masani

Moore

et al. 2012

The Journal of Spinal Cord Medicine

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Background: Pulse wave velocity (PWV), which reflects arterial stiffness, is an important predictor of future coronary artery disease. The test-retest reliability of PWV has not been investigated in people with spinal cord injury (SCI). Purpose: To report the test-retest (day-to-day) reliability of PWV measurements among people with SCI, and to determine the smallest real difference (SRD) of PWV values. Participants: Twenty men (n = 19) and a woman (n = 1) with SCI (C4-T10; AIS A-D; ≥1-year post-injury; 10 with paraplegia and 10 with tetraplegia; time post-injury: 11.8 ± 8.7 years; age: 43.0 ± 12.6 years). Methods: On two occasions within a 2-week period, aortic PWV (between the common carotid and femoral artery), arm PWV (between the brachial and radial artery), and leg PWV (between femoral and posterior tibial artery) were assessed at the same time of day using Doppler flowmeters. Results: No statistically significant differences were found between days 1 and 2 in aortic PWV (day 1: 941 ± 185 cm/seconds, day 2: 917 ± 160 cm/seconds, P = 0.257), leg PWV (day 1: 1088 ± 141 cm/seconds, day 2: 1122 ± 165 cm/seconds, P = 0.099) and arm PWV (day 1: 1283 ± 185 cm/seconds, day 2: 1358 ± 256 cm/seconds, P = 0.180). The aortic and leg PWVs had high test-retest reliability (intraclass correlation coefficient: ICC = 0.920 and 0.913, respectively; P < 0.001 for both) and arm PWV had moderate test-retest reliability (ICC = 0.598, P = 0.03). SRDs for each PWV were 104 cm/seconds (aortic PWV), 97 cm/seconds (leg PWV) and 143 cm/seconds (arm PWV). Conclusion: The test-retest reliability of PWV assessment is high among patients with chronic SCI. Changes in aortic PWV values above 104 cm/seconds with repeated testing like represent true changes in health status.

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The relationship between arterial pulse-wave velocity and pulse frequency at different pressures

Cited by 63 publications

References 7 publications

Arterial distensibility: acute changes following dynamic exercise in normal subjects

Arterial distensibility: acute changes following dynamic exercise in normal subjects

A new approach for detecting sudden hypotension in hemodialysis by using dual-channel optical system

Test–retest reliability of pulse wave velocity in individuals with chronic spinal cord injury

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