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Magnetic resonance angiography and transcranial Doppler ultrasound findings in patients with a clinical diagnosis of vertebrobasilar insufficiency
Neto, Arlindo Cardoso Lima; Bor-Seng-Shu, Edson; Oliveira, Marcelo de Lima; Macedo-Soares, Alberto; Topciu, Flávia Renata; Bittar, Roseli Saraiva Moreira.
  • Neto, Arlindo Cardoso Lima; Universidade de Sao Paulo. Faculdade de Medicina FMUSP. Departamento de Otoneurologia. Sao Paulo. BR
  • Bor-Seng-Shu, Edson; Universidade de Sao Paulo. Faculdade de Medicina FMUSP. Departamento de Neurologia. Sao Paulo. BR
  • Oliveira, Marcelo de Lima; Universidade de Sao Paulo. Faculdade de Medicina FMUSP. Departamento de Neurologia. Sao Paulo. BR
  • Macedo-Soares, Alberto; Centro Universitario Lusiada (UNILUS). Departamento de Geriatria. Santos. BR
  • Topciu, Flávia Renata; Centro Universitario Sao Camilo. Departamento de Geriatria. Sao Paulo. BR
  • Bittar, Roseli Saraiva Moreira; Universidade de Sao Paulo. Faculdade de Medicina FMUSP. Departamento de Otoneurologia. Sao Paulo. BR
Clinics ; 75: e1212, 2020. tab, graf
Article in English | LILACS | ID: biblio-1055876
ABSTRACT

OBJECTIVE:

To evaluate the findings of magnetic resonance angiography (MRA) and transcranial Doppler ultrasound (TCD) in patients with a clinical diagnosis of vertebrobasilar insufficiency (VBI).

METHOD:

From our outpatient neurotology clinic, we selected patients (using the criteria proposed by Grad and Baloh) with a clinical diagnosis of VBI. We excluded patients with any definite cause for vestibular symptoms, a noncontrolled metabolic disease or any contraindication to MRA or TCD. The patients in the study group were sex- and age-matched with subjects who did not have vestibular symptoms (control group). Our final group of patients included 24 patients (study, n=12; control, n=12).

RESULTS:

The MRA results did not demonstrate significant differences in the findings between our study and control groups. TCD demonstrated that the systolic pulse velocity of the right middle cerebral artery, end diastolic velocity of the basilar artery, pulsatility index (PI) of the left middle cerebral artery, PI of the right middle cerebral artery, and PI of the basilar artery were significantly higher in the study group than in the control group, suggesting abnormalities affecting the microcirculation of patients with a clinical diagnosis of VBI compared with controls.

CONCLUSION:

MRA failed to reveal abnormalities in patients with a clinical diagnosis of VBI compared with controls. The PI of the basilar artery, measured using TCD, demonstrated high sensitivity (91%) and specificity (91%) for detecting clinically diagnosed VBI.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Basilar Artery / Vertebrobasilar Insufficiency / Ultrasonography, Doppler, Transcranial / Magnetic Resonance Angiography Type of study: Diagnostic study Limits: Humans Language: English Journal: Clinics Journal subject: Medicine Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Centro Universitario Lusiada (UNILUS)/BR / Centro Universitario Sao Camilo/BR / Universidade de Sao Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Basilar Artery / Vertebrobasilar Insufficiency / Ultrasonography, Doppler, Transcranial / Magnetic Resonance Angiography Type of study: Diagnostic study Limits: Humans Language: English Journal: Clinics Journal subject: Medicine Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Centro Universitario Lusiada (UNILUS)/BR / Centro Universitario Sao Camilo/BR / Universidade de Sao Paulo/BR