Comparação do índice tornozelo-braquial com parâmetros de rigidez e resistência arterial periférica avaliados por fotopletismografia em idosos

Kock, Kelser de Souza; Silva, João Batista Ferreira da; Marques, Jefferson Luiz Brum

doi:10.1590/1677-5449.180084

Cited by 4 publications

(3 citation statements)

References 24 publications

(49 reference statements)

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“…Although the literature points to obesity as an important risk factor, in our study, only 26.92% (n=7) of individuals with PAOD were obese, with no significant association. Similar results were reported in a recent Italian study involving 319 patients, in which the odds ratio was 0.98 (p=0.20) 23 , and in the study conducted by Kock et al 24 on 93 elderly patients treated in the specialty outpatient clinic of the University of Southern Santa Catarina (p=0.551).…”

Section: Discussionsupporting

confidence: 87%

Ankle-brachial Index and associated factors in individuals with coronary artery disease

Aquino

Melo

Souza

et al. 2020

Rev. Assoc. Med. Bras.

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SUMMARY OBJECTIVE Analyzing the association between ABI and the main risk factors for coronary artery disease in coronary patients. METHODS Were selected 156 adult patients from a hospital in Maceió, Alagoas. Were evaluated with risk factors age, obesity, hypertension, diabetes mellitus, smoking, and dyslipidemia. PAOD screening was performed by the ankle-brachial index (ABI). The Mann-Whitney, chi-square, and Fisher’s exact tests were used. Confidence Interval of 95% and a significance of 5%. RESULTS 67.3% (n=105) males, 52.6% (n=82) elderly, 23.1% (n = 34) obese, 72.4% 6% (n=113) hypertensive, 34.6% (n=54) diabetics, 53.2% (n=83) smokers, 34.6% (n=54) dyslipidemic and 70.5% (n=110) with a family history of CAD. 16.7% (n=26) of the individuals presented PAOD. Three factors were associated with PAOD: age group ≥ 60 years (OR:3.656; p=0.005), diabetes mellitus (OR:2.625; p=0.024) and hypertension (OR:5.528; p=0.008). No significant difference was observed in the variables smoking, dyslipidemia, family history of CAD, and obesity. CONCLUSION The independent risk factors for PAOD were age, diabetes mellitus, and systemic arterial hypertension.

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Section: Discussionsupporting

confidence: 87%

Ankle-brachial Index and associated factors in individuals with coronary artery disease

Aquino

Melo

Souza

et al. 2020

Rev. Assoc. Med. Bras.

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“…However, most previous studies used indirect or direct methods to explore the local physical parameters of arterial stiffness, such as the distensibility [ 14 ], compliance [ 9 ], spring constant [ 15 ], and elastance [ 17 ], and the global physical parameters, such as the pulse wave velocity [ 7 ] and augmentation. These parameters could be measured using photoplethysmography [ 28 ], echocardiography [ 18 ], pulse wave velocity [ 7 ], oscillometry [ 22 ], pulse wave analysis [ 24 ], and impedance plethysmography [ 29 ]. These physical parameters of arterial stiffness are all considered time-invariant variables.…”

Section: Discussionmentioning

confidence: 99%

Noninvasive Measurement of Time-Varying Arterial Wall Elastance Using a Single-Frequency Vibration Approach

Wang

Liu

Tseng

et al. 2020

Sensors

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The arterial wall elastance is an important indicator of arterial stiffness and a kind of manifestation associated with vessel-related disease. The time-varying arterial wall elastances can be measured using a multiple-frequency vibration approach according to the Voigt and Maxwell model. However, such a method needs extensive calculation time and its operating steps are very complex. Thus, the aim of this study is to propose a simple and easy method for assessing the time-varying arterial wall elastances with the single-frequency vibration approach. This method was developed according to the simplified Voigt and Maxwell model. Thus, the arterial wall elastance measured using this method was compared with the elastance measured using the multiple-frequency vibration approach. In the single-frequency vibration approach, a moving probe of a vibrator was induced with a radial displacement of 0.15 mm and a 40 Hz frequency. The tip of the probe directly contacted the wall of a superficial radial artery, resulting in the arterial wall moving 0.15 mm radially. A force sensor attached to the probe was used to detect the reactive force exerted by the radial arterial wall. According to Voigt and Maxwell model, the wall elastance (Esingle) was calculated from the ratio of the measured reactive force to the peak deflection of the displacement. The wall elastances (Emultiple) measured by the multiple-frequency vibration approach were used as the reference to validate the performance of the single-frequency approach. Twenty-eight healthy subjects were recruited in the study. Individual wall elastances of the radial artery were determined with the multiple-frequency and the single-frequency approaches at room temperature (25 °C), after 5 min of cold stress (4 °C), and after 5 min of hot stress (42 °C). We found that the time-varying Esingle curves were very close to the time-varying Emultiple curves. Meanwhile, there was a regression line (Esingle = 0.019 + 0.91 Emultiple, standard error of the estimate (SEE) = 0.0295, p < 0.0001) with a high correlation coefficient (0.995) between Esingle and Emultiple. Furthermore, from the Bland–Altman plot, good precision and agreement between the two approaches were demonstrated. In summary, the proposed approach with a single-frequency vibrator and a force sensor showed its feasibility for measuring time-varying wall elastances.

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“…Kock et al [ 70 ] compared the ABI to PPG measurements for arterial stiffness in elderly patients. Many analysis models were used, such as bivariate and multivariate linear regression, the Shapiro–Wilk test to analyse residuals, and winsorisation.…”

Section: Using Photoplethysmography For Arterial Stiffness Assessmentmentioning

confidence: 99%

Photoplethysmography for the Assessment of Arterial Stiffness

Karimpour,

May,

Kyriacou

2023

Sensors

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This review outlines the latest methods and innovations for assessing arterial stiffness, along with their respective advantages and disadvantages. Furthermore, we present compelling evidence indicating a recent growth in research focused on assessing arterial stiffness using photoplethysmography (PPG) and propose PPG as a potential tool for assessing vascular ageing in the future. Blood vessels deteriorate with age, losing elasticity and forming deposits. This raises the likelihood of developing cardiovascular disease (CVD), widely reported as the global leading cause of death. The ageing process induces structural modifications in the vascular system, such as increased arterial stiffness, which can cause various volumetric, mechanical, and haemodynamic alterations. Numerous techniques have been investigated to assess arterial stiffness, some of which are currently used in commercial medical devices and some, such as PPG, of which still remain in the research space.

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Comparação do índice tornozelo-braquial com parâmetros de rigidez e resistência arterial periférica avaliados por fotopletismografia em idosos

Cited by 4 publications

References 24 publications

Ankle-brachial Index and associated factors in individuals with coronary artery disease

Ankle-brachial Index and associated factors in individuals with coronary artery disease

Noninvasive Measurement of Time-Varying Arterial Wall Elastance Using a Single-Frequency Vibration Approach

Photoplethysmography for the Assessment of Arterial Stiffness

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