Variability and Reproducibility of Transcutaneous Oxygen Tension Measurements in the Assessment of Peripheral Vascular Disease

Transcutaneous oxygen tension (TcPO2) was measured according to a standard protocol in 43 limbs from 23 subjects, by use of oxygen-sensing electrodes attached to the chest (at a single site) or dorsum of the foot (at proximal and distal sites, located 1-2 cm apart). With the subjects supine, distal...

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Veröffentlicht in:Angiology 1989-08, Vol.40 (8), p.695-700
Hauptverfasser: Rooke, Thom W., Osmundson, P.J.
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description Transcutaneous oxygen tension (TcPO2) was measured according to a standard protocol in 43 limbs from 23 subjects, by use of oxygen-sensing electrodes attached to the chest (at a single site) or dorsum of the foot (at proximal and distal sites, located 1-2 cm apart). With the subjects supine, distal foot TcPO 2 differed from proximal by an average of ±7.4 mmHg, and in 80% of all limbs the differences were between -6 mmHg and + 15 mmHg. The two TcPO 2's were subsequently combined to yield a single "average" value for each foot. TcPO2 measurements were repeated twenty-four to forty-eight hours later; in the supine position the change in "average" foot TCPO 2 from the first to second measurement was ±6.9 mmHg, and in 80% of limbs the changes were between -11 mmHg and +9 mmHg. Similar reproducibility data were also obtained for ankle/brachial blood pressure indices (ABIs), chest TcPO2, and foot TcPO2 during three minutes of leg elevation at 30 degrees. The authors conclude that: (1) TcPO2 measurements from adjacent areas on the dorsum of the foot usually differ by 20-25% or less and (2) the short-term reproducibility of TcPO2 between studies is comparable to that for ABIS.
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The authors conclude that: (1) TcPO2 measurements from adjacent areas on the dorsum of the foot usually differ by 20-25% or less and (2) the short-term reproducibility of TcPO2 between studies is comparable to that for ABIS.</abstract><cop>Thousand Oaks, CA</cop><pub>SAGE Publications</pub><pmid>2757262</pmid><doi>10.1177/000331978904000802</doi><tpages>6</tpages></addata></record>
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subjects Arterial Occlusive Diseases - blood
Blood Gas Monitoring, Transcutaneous
Humans
Leg - blood supply
Reproducibility of Results
Skin - blood supply
title Variability and Reproducibility of Transcutaneous Oxygen Tension Measurements in the Assessment of Peripheral Vascular Disease
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