The resistive and pulsatility indices of the dorsal metatarsal artery for the screening of peripheral lower artery disease in patients with and without diabetes
Authors' conclusion
Dorsal metatarsal artery resistive index (MARI) showed a significant inverse correlation with PAD, similarly to ABI, irrespective of the presence of diabetes. MARI seems to be an effective screening tool for PAD even in patients with wall calcification. Further studies are needed for confirming the results of the present pilot study.
Study context
- Population
- Patients with and without diabetes assessed for lower extremity peripheral artery disease (PAD); 21 (65.6 %) with diabetes51 legs
- Participants
- 32 patients
- Comparison
- Resistive and pulsatility indices of the dorsal metatarsal artery vs ankle-brachial index (ABI)
- Outcome
- Correlation between PI, RI and ABI
Methodological detailspilot study
- Pilot study
Performance
As reported in the abstract
Association of DMA RI and PI with PAD and correlation with ABI
- PAD significantly associated with lower resistive (RI) and pulsatility index (PI) of the dorsal metatarsal artery (DMA)
- both p < 0.000
- RI, but not PI, correlated significantly with ABI when ABI <1.4, but not when ABI >1.4
- r = 0.535
Further findings
Patients with diabetes
- Similar figure vs those without diabetes; RI, but not PI, correlated significantly with ABI
- r = 0.600
ABI not calculable due to wall calcification
- Legs with ABI not calculable
- 14 legs (27.5 %)
- Legs with compressible arteries
- 37 (72.5 %)
Original publication
The resistive and pulsatility indices of the dorsal metatarsal artery for the screening of peripheral lower artery disease in patients with and without diabetes. Diabetes Res Clin Pract. Published 3 June 2024. doi:10.
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