Which of the following is/are true with respect to transcutaneous PO2 (TcPO2) measurements?
A. TcPO2 levels provide an index of the adequacy of tissue perfusion and depends on the quantity of oxygen delivered and that extracted to meet metabolic demands
B. Extremity TcPO2levels are typically normalized to a well perfused area, such as the infraclavicular skin
C. TcPO2levels average about 60 mmHg in normal limbs
D. Patients with limb threatening ischemia usually have values less than 20 mmHg and may approach 0
Answer:A
Which of the following is/are true with respect to transcutaneous PO2 (TcPO2) measurements?
A. TcPO2 levels provide an index of the adequacy of tissue perfusion and depends on the quantity of oxygen delivered and that extracted to meet metabolic demands B. Extremity TcPO2levels are typically normalized to a well perfused area, such as the infraclavicular skin C. TcPO2levels average about 60 mmHg in normal limbs D. Patients with limb threatening ischemia usually have values less than 20 mmHg and may approach 0