Department of Angiology and Vascular Surgery, Coimbra Hospital and University Centre, Coimbra, Portugal.
Departement de Chirurgie Vasculaire, Polyclinique du Sidobre, Castres, France.
Port J Card Thorac Vasc Surg. 2024 May 13;31(1):29-32. doi: 10.48729/pjctvs.409.
Ankle-Brachial Index (ABI) is a well-established diagnostic tool for evaluating peripheral arterial disease (PAD). Limitations in its application led to the development of alternative diagnostic methods, including Toe-Brachial Index (TBI) and Transcutaneous Pressure of Oxygen (TcPO2), yet these are not as widely available as ABI. Recently, Pedal Acceleration Time (PAT), has gained popularity as a new tool to assess PAD, requiring only an ultrasound. This study seeks to further establish the correlation between ABI and PAT, determining whether PAT can be a reliable alternative for diagnosing and assessing the severity of PAD.
ABI and PAT were measured in patients attending our consult with no history of vascular or endovascular surgery. Limbs with unmeasurable ABI were excluded. Patients were categorized into groups based on their PAD stage according to the Fontaine classification. Patient demographics, comorbidities and respective ABI and PAT were analysed.
Sixty-nine patients (114 limbs) were included in the study. Mean age 68 ± 11.7 years, 78.3% male and 33.3% diabetic patients. Fifty-three claudicant limbs (46.5%) and 26 limbs (22.8%) with chronic limb threatening ischemia. Pearson correlation coefficient between ABI and PAT, showed a strong negative correlation (r= -0.78; p<0.01). Mean ABI and PAT for limbs in Fontaine stage I were 0.94 ± 0.17 and 82.0 ± 27.4 ms; Fontaine stage IIa 0.69 ± 0.21 and 141.3 ± 57.8 ms; Fontaine stage IIb 0.54 ± 0.14 and 173.4 ± 65.1 ms; Fontaine stage III 0.43 ± 0.15 and 216 ± 33.2 ms; Fontaine stage IV 0.49 ± 0.17 and 206.7 ± 78.1 ms, respectively.
Our study suggests an inverse correlation between ABI and PAT, in accordance with the findings published in the literature, thus supporting the use of PAT as an easily reproducible and efficient alternative to ABI for evaluating the severity of PAD.
踝臂指数（ABI）是评估外周动脉疾病（PAD）的一种成熟的诊断工具。由于其应用的局限性，导致了替代诊断方法的发展，包括趾臂指数（TBI）和经皮氧分压（TcPO2），但这些方法并不像 ABI 那样广泛应用。最近，足动脉加速度时间（PAT）作为一种新的评估 PAD 的工具而受到关注，它只需要使用超声即可进行测量。本研究旨在进一步建立 ABI 和 PAT 之间的相关性，以确定 PAT 是否可以作为一种可靠的替代方法来诊断和评估 PAD 的严重程度。
对我院就诊且无血管或血管内手术史的患者进行 ABI 和 PAT 测量。排除无法测量 ABI 的肢体。根据 Fontaine 分类，根据 PAD 分期将患者分为不同组别。分析患者的人口统计学特征、合并症以及相应的 ABI 和 PAT。
本研究共纳入 69 例（114 条肢体）患者。平均年龄 68±11.7 岁，男性占 78.3%，糖尿病患者占 33.3%。53 条跛行肢体（46.5%）和 26 条（22.8%）慢性肢体威胁性缺血肢体。ABI 和 PAT 之间的 Pearson 相关系数显示出强烈的负相关（r=-0.78；p<0.01）。Fontaine 分期 I 期的平均 ABI 和 PAT 分别为 0.94±0.17 和 82.0±27.4ms；Fontaine 分期 IIa 期为 0.69±0.21 和 141.3±57.8ms；Fontaine 分期 IIb 期为 0.54±0.14 和 173.4±65.1ms；Fontaine 分期 III 期为 0.43±0.15 和 216±33.2ms；Fontaine 分期 IV 期为 0.49±0.17 和 206.7±78.1ms。
本研究表明 ABI 和 PAT 之间存在负相关，与文献中的发现一致，因此支持使用 PAT 作为一种易于复制和高效的 ABI 替代方法来评估 PAD 的严重程度。
