COVID-19 outbreaks surveillance through text mining applied to electronic health records.

Background: The COVID-19 pandemic has caused significant disruptions to everyday life and has had social, political, and financial consequences that will persist for years. Several initiatives with intensive use of technology were quickly developed in this scenario. However, technologies that enhance epidemiological surveillance in contexts with low testing capacity and healthcare resources are scarce.

Impact of Heart Transplantation on the Recovery of Peripheral and Respiratory Muscle Mass and Strength in Patients With Chronic Heart Failure.

Background: To assess the impact of heart transplantation (HT) on the recovery of peripheral and respiratory muscle mass and strength in patients with congestive heart failure.

Methods: The study included 23 patients with an indication for HT (patients in the waiting list [WL] group). These patients were monitored for 1.

Accuracy of the pacemaker event recorder versus Holter-ECG to detect both symptomatic and asymptomatic ventricular arrhythmias.

Background: Although new pacemakers can register cardiac rhythm, few studies were performed evaluating their accuracy in diagnosing ventricular arrhythmias (VA). This study aimed to assess the correlation and agreement between the pacemaker's monitor and the ambulatory Holter in detecting VA.

Methods And Results: We studied 129 patients with pacemakers, mean age 68.

[Analysis of anatomical pieces preservation with polyester resin for human anatomy study].

Objective: To evaluate the use of polyester resin in preserving anatomical specimens for the study of human anatomy.

Methods: We used 150 anatomical specimens, comprised of unfixed (fresh), fixed in 10% formalin and vascular casts of organs injected with vinyl acetate and polyester resin. The solution used consisted of polyester resin with the diluent styrene monomer and catalyst (peroxol).

Fibrosis, myocardial crossings, disconnections, abrupt turns, and epicardial reflections: do they play an actual role in human permanent atrial fibrillation? A controlled necropsy study.

Atrial myocardium fibrosis and other alterations of fiber continuity and potential circuit reentrancy (disconnections, abrupt turns, crossings, and epicardial reflections) are thought to play an important role in permanent atrial fibrillation. However, few studies have been performed in human beings. Some of them are only descriptive, and controls were usually normal hearts; thus, differences between cases and controls could be related to the underlying disease rather than the arrhythmia.

Anatomic relations of the Marshall vein: importance for catheterization of the coronary sinus in ablation procedures.

Aims: Our objective was to study the anatomic relations of the human left atrial oblique vein (Marshall vein), particularly of its ostium opening into the coronary sinus, in order to guide ablation procedures related to that vein.

Methods And Results: The study was carried out in 23 heart-specimens (mean weight 446 +/- 204 g) of individuals whose mean ages were 43 +/- 21 years, 20 males. The coronary sinus was opened longitudinally, exposing the ostium of the tributary veins; the Vieussens valve was looked for, as well as its relationship to the left atrial oblique vein.