15
TBI with
waveforms, TcPO
2
,
and/or SPP
(2a)
ABI Interpretation
Normal 1.00–1.40
Borderline 0.91–0.99
Abnormal ≤0.90
Noncompressible >1.40
GDMT, preventive foot care,
and structured exercise
(1)
Resting ABI
>0.9 and ≤1.40
Resting ABI
>1.40
TBI with
waveforms
(1)
YES NO
Seek alternative
diagnosis
(Table 8)
See Figure 5
TBI with waveforms, TcPO
2
, SPP,
and/or other local perfusion measures
if nonhealing wounds or gangrene*
(2a)
YES
Diagnosis
of PAD/CLTI
confirmed?
NO
TBI with
waveforms, TcPO
2
,
and/or SPP
(2a)
TcPO
2
and/or SPP
(2a)
See Figure 6
Resting ABI
≤0.9
TBI Interpretation
Normal >0.70
Abnormal ≤0.70
PAD/CLTI
Duplex ultrasound, CTA, MRA, or
catheter angiography to determine
revascularization strategy
(1)
Patients with suspected CLTI
* If not already performed.
