Publications by authors named "Ana Luiza Engelhorn"
Background: Vascular ultrasonography (VU) is the examination of choice for studying the superficial venous system of the lower limbs and using VU to measure the diameters of saphenous veins could provide parameters for planning surgery.
Objectives: To employ VU to identify the diameters of great saphenous veins free from reflux in women and determine their relationships with age, height, CEAP classification, and body mass index (BMI).
Methods: This was a cross-sectional study in women with symptoms of primary chronic venous insufficiency (CEAP C0, 1, or 2) with no previous varicose vein surgery and no reflux detected by VU.
Aim: This study aimed to determine whether grayscale median (GSM) ultrasound (US) analysis could differentiate acute from subacute femoropopliteal deep venous thrombosis (DVT) classified based on (a) the time of symptoms onset and (b) sonographers' evaluation of US images.
Methods: Patients who had US because of suspected DVT were included. Patients with history of previous DVT, with normal US results or US with findings of isolated calf thrombosis were excluded.
Objective: Common carotid artery intima-media thickness (IMT) is considered a factor of cardiovascular risk and an early marker of coronary artery disease. This study aimed to investigate the existence of a correlation between IMT in the carotid arteries and at the origin of the right subclavian artery, as well as to evaluate IMT in the subclavian artery as an earlier marker of cardiovascular risk.
Methods: One hundred and six consecutive patients, 52 males and 54 females, average age 51 years, underwent color Doppler ultrasonography to evaluate carotid and right subclavian arteries.
Objective: To assess the accuracy of vascular color Doppler ultrasound as compared with digital subtraction arteriography for identifying hemodynamically significant renal artery stenoses.
Methods: One hundred and thirty-seven renal arteries from 69 adult patients suspected of having renovascular arterial hypertension were prospectively studied with ultrasound. The results obtained were compared in a double-blind manner with those obtained on digital subtraction arteriography, and the following parameters were calculated according to previously defined criteria: sensitivity, specificity, positive predictive value, negative predictive value, and overall accuracy.