title: Importance of the arterial pressure value for doppler assessment of carotid stenoses.
abstract: Many centres appear to perform carotid endarterectomy solely based on the findings of duplex scanning. There are two fundamental methods aimed at assessing the stenosis degree during an altrasonographic study, i. e., planimetric examination and Doppler altrasonography. Doppler ultrasonographic criteria have an independentsignificance when the assessment of the stenosis degree in the ultruasonographic B-mode is complicated. However, the currently available guidelines on haemodynamic assessment of the stenosis degree are solely based on the parameters of local blood flow without taking into consideration the state of central haemodynamics. The present study has shown that blood flow in the region ofstenosis of the internal carotid arteries (ICAs) depends not only on the stenosis degree but on the value of systemic arterial pressure (AP) at examination. Based on the obtained findings, we worked out Doppler ultrasonographic criteria for ICA stenosis degree "by the area" corrected for the value of systemic AP. It was determined that using pulse AP increases their prognostic eficiency.
authors.affiliation: Chair of Pathophysiology, Functional and Ultrasonographic Diagnosis Altai State Medical University of the Russian Health Ministry, Barnaul, Russia. zasorinsergey@mail.ru
authors.forename: S V
authors.initials: SV
authors.lastname: Zasorin
authors.forename: V P
authors.initials: VP
authors.lastname: Kulikov
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001783:Blood Flow Velocity / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology*; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D016893:Carotid Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D016894:Endarterectomy, Carotid / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D018616:Ultrasonography, Doppler, Duplex / Q000379:methods*