CONTRIBUTION OF TRANSCUTANEOUS OXYMETRY IN DIABETIC FOOT SYNDROME

Ludovit Gaspar, Matej Bendzala, Andrea Komornikova, Ivan Ocadlik, Michal Makovnik, Peter Gavornik

Abstract


Four major complications are participating in tissue damage in diabetic foot syndrome – diabetic angiopathy, neuropathy, osteoarthropathy and inflammation. Low ankle-brachial pressure index (ABI) is a well-known indicator for ischemia of lower limbs, but in patients with diabetes mellitus is common also a high ABI (over 1.3) as reliable predictor of the presence of arterial calcification – medial calcinosis. Aim of the study is to determine the degree of ischemia using transcutaneous oximetry in patients with diabetic foot syndrome - with clinical manifestations of peripheral arterial occlusive disease (PAOD) and medial calcinosis. We investigated three groups: first consisted of 46 members in IInd stage of PAOD according to Fontaine classification, in second group were 30 members in IIIrd stage of PAOD and third had 29 members in IVth stage of PAOD. The ABI was determined with Doppler ultrasound examination. Transcutaneous oxygen tension (TcPO2) was measured with Oxykapnomonitor Hellige SMK Germany equipment with sensing probe – transoxode. Resting values of TcPO2 were obtained in lying patient on the foot in first metatarsal space. Subsequently leg was passively elevated into 30 degree angle for 3 minutes and then reimposed into primary position. One minute exercise – plantar and dorsal feet flexion was performed and after the TcPO2 values stabilization the patient hung his shin from the edge of the bed touching the floor. TcPO2 values were continuously recorded by analog waveform. In more severe stages of PAOD according to Fontaine stage III and IV we detected lower levels of TcPO2 under basal resting conditions: 20 respectively 5 mmHg. Patients with IInd stage of PAOD had basal TcPO2 values of 40 mmHg. Conclusions of the study are: TcPO2 values are not affected by the presence of medial calcinosis and sothis method is particularly beneficial in patients where Doppler ultrasound examination shows artificial high pressure values on lower limbs. In the third and fourth stage of PAOD passive leg elevation is as effective in determination of ischemia as working test.


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References


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DOI: http://dx.doi.org/10.12955/cbup.v1.50

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