Introduction:

the assessment of ITB in patients with the peripheral arterial disease has some limitations and does not provide an adequate parameter of distal perfusion. Recently, the assessment of acceleration time in plantar arteries by Doppler ultrasonography has been described, which can correlate with ABI and offer a noninvasive diagnostic alternative in patients with limited interpretation.

Objectives:

in this study we seek to evaluate the correlation of TAP with ABI measurement in a group of patients in Colombia.

Methods:

a descriptive, prospective, cross-sectional study in 2 high complexity hospitals in Medellin (Colombia). During a 1-year period, plantar acceleration time was measured in 68 patients (130 extremities) who presented for arterial plethysmography under suspicion of peripheral arterial disease (PAD). For data analysis, measures of central tendency were used, such as the mean with its standard deviation or the median with its interquartile range according to the distribution of the data by the Shapiro-Wilk test. For qualitative variables absolute and relative frequency distribution of categories and variables were used.

Results:

the decrease in ABI is associated with an increase in PAT. In patients with normal ABI (1-1.3) a mean TAP of 83 ± 21 ms was found, with ITB 0.5-0.89 TAP 134 ± 48 ms was found, and in patients with ABI < 0.5 TAP 193 ± 57 ms was found with lateral plantar artery measurements, with an inverse correlation of -0.9 between the values of the 4 plantar arteries. Severe patients with ABI<0.5 are associated with TAP greater than 160 ms with an (AUC = 0.89; 95% CI, 0.839-0.959), similarly patients with a normal ABI are associated with PAT values < 100 ms.

Conclusions:

longer PAT values show a high correlation with longer ABI. Low and greater involvement of patients with peripheral arterial disease, as well as lower PAT values, correlate with a normal ABI.

Measurement of PAT may represent an additional tool in the evaluation of PAD, however, further studies are required to assess PAT in populations with non-assessable ABI such as those with stiffness.

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