Duplex Surveillance of Infrainguinal Bypass Grafts
Graft type Number Peak systolic velocity (cm/s)(mean ± SD) In situ saphenous vein Femoropopliteal 65 76 ± 12 Femorotibial 95 72 ± 16 Femoral-pedal 25 52 ± 12 Reversed saphenous…
Duplex Scanning for Lower Extremity Arterial Disease
Duplex diagnosis Endovascular Surgery Aortoiliac lesions Focal stenosis Stent Endarterectomy/reconstruction Diffuse disease Balloon angioplasty Aortofemoral bypass Stent Femorofemoral bypass Aortic or iliac aneurysm Stent graft Surgical reconstruction Infrainguinal lesions Femoropopliteal…
Arterial and Venous Intravascular Ultrasound Applications
Fig. 53.1 A 2.9F Eagle Eye IVUS probe compatible with a 0.014-in. guidewire Fig. 53.2 A motorized pullback sled device The IVUS image created is a circular axial cut with…
Clinical Implications of the Vascular Laboratory in the Diagnosis of Peripheral Arterial Disease
Fig. 35.1 Method for measuring the penile Doppler pressures using a Doppler flow probe on the dorsal penile artery Patients over the age of 40 years without symptoms of impotence…
The Role of Color Duplex Scanning in Diagnosing Diseases of the Aortic Arch Branches and Carotid Arteries
Fig. 8.1 Aortic arch and its branches. IA innominate artery, RScA right subclavian artery, VA vertebral artery, RCCA right common carotid artery, LCCA left common carotid artery, LScA left subclavian…
Venous Duplex Ultrasound of the Upper Extremities
Indications Number Upper extremity venous duplex to rule out thrombosis 191 Upper extremity dialysis evaluations 142 Upper extremity radial artery bypass harvest 16 Upper extremity graft surveillance 35 Evaluation for…
Intravascular Ultrasound for Venous Stenting and Inferior Vena Cava Filter Insertion
Fig. 43.1 The bright echoes close to a multi-array catheter may be “ringed down” (top). The guidewire of a monorail type of catheter may create a wedge-formed acoustic shadow. By…
Role of Duplex Ultrasound in Dialysis Access Surveillance
where U sis the systemic [BUN], U ais arterial line [BUN], and U vis the venous line [BUN]. Existing methods (three-needle, peripheral vein techniques) of measurement of systemic [BUN] are…
Clinical Application of Ultrasound Guidance in Arterial and Venous Access
Fig. 57.1 Percutaneous insertion of needle into the jugular vein Fig. 57.2 Echogenic tip of needle in the lumen of the jugular vein, transverse view For tunneled catheters, our group…
Clinical Implications of the Vascular Laboratory in the Diagnosis of Cerebrovascular Insufficiency
Fig. 19.1 Management protocol for patients with asymptomatic carotid bruit or nonhemispheric symptoms. MRA magnetic resonance angiography, CEA carotid endarterectomy, st. stenosis If stenosis of ≥60–99% was detected and the…
