Risk assessment validation in patients with pulmonary arterial hypertension: Data from a Southern Brazil registry (RESPHIRAR study).

Pulmonary arterial hypertension (PAH) is a severe and progressive disease characterized by increased pulmonary vascular resistance, ultimately leading to right heart failure and death. Registries are a valuable tool in the research of rare conditions such as PAH. Moreover, the risk assessment strategy has been validated in European and North American registries and has been reported to provide an accurate prediction of mortality and the clinical advantage of reaching low-risk status.

Asthma control in Brazil: a systematic review.

Objectives: To explore asthma control in patients undergoing pharmacotherapy on studies in the last 20 years in Brazil. Asthma is a chronic airway inflammation disease with a high prevalence worldwide. Even with a variety of drug treatment improvements, attaining asthma control is challenging, since it should have a personalized approach.

Prevalence of the eosinophilic phenotype among severe asthma patients in Brazil: the BRAEOS study.

Objective: To assess the prevalence of the eosinophilic and allergic phenotypes of severe asthma in Brazil, as well as to investigate the clinical characteristics of severe asthma patients in the country.

Methods: This was a cross-sectional study of adult patients diagnosed with severe asthma and managed at specialized centers in Brazil. The study was conducted in 2019.

2021 Brazilian Thoracic Association recommendations for the management of severe asthma.

Advances in the understanding that severe asthma is a complex and heterogeneous disease and in the knowledge of the pathophysiology of asthma, with the identification of different phenotypes and endotypes, have allowed new approaches for the diagnosis and characterization of the disease and have resulted in relevant changes in pharmacological management. In this context, the definition of severe asthma has been established, being differentiated from difficult-to-control asthma. These recommendations address this topic and review advances in phenotyping, use of biomarkers, and new treatments for severe asthma.

Relationship between right atrium area and right ventricular ejection fraction on magnetic resonance imaging: comparison with other prognostic markers in patients with pulmonary arterial hypertension.

Objective: To compare the right atrium (RA) area and right ventricular ejection fraction (RVEF) with other known prognostic markers in patients with pulmonary arterial hypertension (PAH).

Materials And Methods: This was a retrospective study of 74 patients diagnosed with PAH by right heart catheterization at a referral center between January 2018 and May 2018. All of the patients underwent cardiac magnetic resonance imaging (MRI) within 3 months of the right heart catheterization (RHC), as well as undergoing echocardiography, a 6-minute walk test, and determination of the level of N-terminal pro-brain natriuretic peptide (NT-proBNP) within a month of the RHC.