Impedance plethysmography as an alternative method for the diagnosis of peripheral arterial disease

Mašanauskienė, Edita; Sadauskas, Saulius; Naudžiūnas, Albinas; Unikauskas, Alvydas; Stankevičius, Edgaras

doi:10.1016/j.medici.2014.11.007

Cited by 11 publications

(5 citation statements)

References 24 publications

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“…Threshold pulse wave amplitude of 0.06% dR (resistance change due to blood volume change) and 0.60% dR/s for systolic slope were used [ 36 ]. When compared to ABI diagnosed PVD in a study of 66 patients, a sensitivity of 73.2% and a specificity of 96% was reported, using crest time thresholds of 180 ms [ 61 ].…”

Section: Plethysmographic Methodsmentioning

confidence: 99%

Peripheral vascular disease assessment in the lower limb: a review of current and emerging non-invasive diagnostic methods

et al. 2018

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BackgroundWorldwide, at least 200 million people are affected by peripheral vascular diseases (PVDs), including peripheral arterial disease (PAD), chronic venous insufficiency (CVI) and deep vein thrombosis (DVT). The high prevalence and serious consequences of PVDs have led to the development of several diagnostic tools and clinical guidelines to assist timely diagnosis and patient management. Given the increasing number of diagnostic methods available, a comprehensive review of available technologies is timely in order to understand their limitations and direct future development effort.Main bodyThis paper reviews the available diagnostic methods for PAD, CVI, and DVT with a focus on non-invasive modalities. Each method is critically evaluated in terms of sensitivity, specificity, accuracy, ease of use, procedure time duration, and training requirements where applicable.ConclusionThis review emphasizes the limitations of existing methods, highlighting a latent need for the development of new non-invasive, efficient diagnostic methods. Some newly emerging technologies are identified, in particular wearable sensors, which demonstrate considerable potential to address the need for simple, cost-effective, accurate and timely diagnosis of PVDs.Electronic supplementary materialThe online version of this article (10.1186/s12938-018-0494-4) contains supplementary material, which is available to authorized users.

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Section: Plethysmographic Methodsmentioning

confidence: 99%

Peripheral vascular disease assessment in the lower limb: a review of current and emerging non-invasive diagnostic methods

et al. 2018

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“…If sphincter insufficiency is caused by damage or stretching of the pudendal nerve (neurogenic damage), with preserved continuity, conservative treatment should be applied. Patients with symptoms of fecal incontinence, whether caused by sphincter injury or neurogenic damage, should undergo intensive treatment [27][28][29][30][31][32]. In case of absence of proper treatment for sphincter trauma detected in the postpartum period, extended reconstructive surgery performed by an experienced colorectal surgeon can be necessary.…”

Section: Gradementioning

confidence: 99%

Obstetric Anal Sphincter Injury Detection Using Impedance Spectroscopy with the ONIRY Probe

et al. 2021

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Anal sphincter injuries occurring during natural deliveries are often a reason for severe complications, including fecal incontinence. Currently, approximately 80% of these injuries remain unrecognized. Therefore, it is crucial to focus on finding a way to diagnose such injuries as early as possible to apply the tailored treatment. This study aimed to assess the accuracy of impedance spectroscopy in the diagnostics of obstetric anal sphincter injuries (OASIs) using a specially designed rectal probe called the ONIRY Probe. The protocol of the clinical trials is described at NCT03769792. Twenty women after natural delivery were enrolled in the study and divided into two groups referring to the stage of a perineal tear (Group A: 1- or 2-degrees, and Group B: 3- or 4-degrees of a perineal tear; without or with sphincter injury, respectively). The study design included three visits during which a number of diagnostic tests were performed, including impedance spectroscopy, and 3-dimensional endoanal ultrasound, anorectal manometry, and physical examination as a reference. Statistical analysis comprised raw data analysis, as well as post-processing with the Synthetic Minority Oversampling Technique (SMOTE) method, as the output reference grade was highly imbalanced. A variety of machine learning techniques were applied for the OASI classification (≤2 vs. >2), and Wexner scale (=0 vs. >0). The best efficacies were obtained using Random Forest and k-Nearest Neighbors methods. Best accuracies were 93.3% and 99.6%, for raw and re-analyzed data, respectively, for ultrasound assessed by the OASI classification; and 79.8% and 97.0%, respectively, for clinical evaluation using the Wexner scale. Impedance spectroscopy performed using the ONIRY Probe appears to be a promising diagnostic technique for anal sphincter injury detection but requires further investigation (the next phase of the pilot clinical trial is described at NCT04181840).

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“…Metode lain yang digunakan untuk mengukur nilai ABI untuk mendeteksi PAD yaitu menggunakan impedansi plethysmography untuk mengukur sirkulasi darah di pergelangan kaki. Sensitivitas pengukuran ABI dengan teknik ini sebesar 73% dan spesifisitas sebesar 96% [9]- [10]. Penggunaan osillometric juga digunakan untuk mengukur ABI pada pasien normal yang memiliki risiko penyakit kardiovaskular dengan sensitivitas 0.71 dan spesifitisitas sebesar 0.89 [11].…”

Section: Pendahuluanunclassified

Rancang Bangun Alat Ukur Ankle Brachial Indeks Untuk Deteksi Peripheral Artery Disease

Arsianti¹,

Sardina

Fairul

et al. 2020

JRE

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Impedance plethysmography as an alternative method for the diagnosis of peripheral arterial disease

Abstract: Impedance plethysmography, especially its parameter CT, is an alternative noninvasive method in diagnosing PAD and could be used for the screening of patients with PAD.

Cited by 11 publications

References 24 publications

Peripheral vascular disease assessment in the lower limb: a review of current and emerging non-invasive diagnostic methods

Peripheral vascular disease assessment in the lower limb: a review of current and emerging non-invasive diagnostic methods

Obstetric Anal Sphincter Injury Detection Using Impedance Spectroscopy with the ONIRY Probe

Rancang Bangun Alat Ukur Ankle Brachial Indeks Untuk Deteksi Peripheral Artery Disease

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