Publications by authors named "Vinicius D Vaz"
Impact of the COVID-19 Pandemic on Global TAVR Activity: The COVID-TAVI Study.
JACC Cardiovasc Interv
February 2024
Article Synopsis
- The COVID-19 pandemic led to significant treatment delays for patients needing transcatheter aortic valve replacement (TAVR), with a marked decrease in procedure volumes during the first two waves of the pandemic.
- The study analyzed TAVR case data from 130 centers in 61 countries, finding a 15% drop in cases during the first wave and 7% in the second, particularly affecting regions like Africa, Central-South America, and Asia.
- Factors such as hospital type (private vs public), urban vs rural location, low procedure volumes, a country's socioeconomic status, and stringent public health measures contributed to these reductions, highlighting the need for improved public health policies for future health crises.
Objective: To evaluate the safety and efficacy of surgical treatment approach vs. conservative approach in patients with ambiguous lesions in the left main coronary artery (LMCA), based on intracoronary ultrasound (ICUS) findings.
Methods: Sixty-six consecutive patients with angiographically ambiguous lesions were included and submitted to ICUS assessment.
Background: Sirolimus-eluting stents (SES) have already demonstrated their long-term effectiveness in suppressing neointimal hyperplasia in non-high risk patients. The long-term follow up of diabetic patients treated with SES has not been yet evaluated.
Methods And Results: Quantitative coronary angiography and intravascular ultrasound analysis were performed in 35 diabetic patients treated with a SES at short- (6.
[Adenosine myocardial perfusion SPECT with Tc-99m-MIBI in patients with obstructive coronary artery disease: correlation between quantitative coronary angiography and intravascular ultrasound measurements].
Arq Bras Cardiol
January 2006
Objective: To correlate myocardial perfusion scintigraphy (MPS) with Tc-99m-MIBI and adenosine infusion using quantitative coronary angiography (QCA) and intravascular ultrasound (IVUS).
Methods: Seventy patients with coronary artery disease (CAD) referred for myocardial perfusion scintigraphy (MPS) with MIBI and adenosine were studied. Clinical, electrocardiographic (ECG), and scintigraphic findings were correlated with variables of visual and quantitative angiographic analysis, as well as to those of IVUS.
We report the outcomes of patients who had in-stent restenosis (IRS) that was treated with intravascular brachytherapy (IVBT) or sirolimus-eluting stent (SES) implantation. The benefit of IVBT for treating ISR is well documented. SES implantation decreases first-time ISR and, in preliminary reports, has been used to treat ISR.
View Article and Find Full Text PDFWe report one-year angiographic and intravascular ultrasound (IVUS) outcomes of in-stent restenosis (ISR) patients treated with intravascular brachytherapy (IVBT). The benefit of IVBT for treating ISR is well documented. However, few data exist on significant angiographic and intravascular ultrasonic in-stent lumen deterioration beyond the habitual 6-month analysis after the index radiation procedure or so-called late catch-up process in the treatment of ISR.
View Article and Find Full Text PDFObjectives: This research was undertaken to assess the status of the coronary wall morphology late after the arterial switch operation (ASO) for transposition of the great arteries employing intravascular ultrasound (IVUS).
Background: Long-term patency of the reimplanted coronary arteries is a key issue after ASO. Follow-up studies have demonstrated coronary obstruction in up to 8% of patients that may be related to progressive fibrocellular intimal thickening.