Identification of Cerebral Artery Stenosis Using Bilateral Photoplethysmography

Bilateral photoplethysmography studies of the leg arterial stenosis.

A newly developed portable multi-channel photoplethysmography (PPG) device has been used for comparative studies of 20 healthy control subjects and 45 patients with diagnosed arterial stenosis in a leg. The peripheral blood pulsations were detected simultaneously at four body sites-the same fingers and toes of both arms and legs. The PPG pulses recorded at the periphery of the stenotic leg, if ...

Bilateral renal artery stenosis.

A 49-year-old Hispanic female was admitted to the hospital with sepsis and an infected upper extremity arteriovenous fistula dialysis port. Her medical history was significant for dialysis-dependent, endstage renal disease for the previous six years. Additional history was limited due to language barriers but included hypertension and hyperlipidemia. Blood cultures from admission grew Staphyloc...

Bilateral Internal Carotid Artery Stenosis

A72-year-old manpresented with paroxysmal and transient involuntary movements, or "limb shaking". The attacks occurred alternately from one side of the body to the other and ceased spontaneously. Surface EMG study showed synchronous grouping discharges in multiple limb muscles, being compatible with hemiballism-hemichorea. Cerebral angiography demonstrated marked stenosis of the bilateral inter...

Bilateral renal artery stenosis after renal denervation.

Substantial Reduction of Parenchymal Cerebral Blood Flow in Mice with Bilateral Common Carotid Artery Stenosis

The bilateral common carotid artery stenosis (BCAS) mouse model, which replicates chronic cerebral hypoperfusion and white matter ischemic lesions, is considered to model some aspects of vascular cognitive impairment. Cerebral blood flow (CBF) changes in the brain surface post-BCAS have been demonstrated by laser speckle flowmetry, but CBF levels in the brain parenchyma remain unknown. Adult C5...