Six-minute walk test reveals delayed oxygen uptake kinetics in ischemic cardiomyopathy.

Although correlated to peak oxygen uptake (VO2), the six-minute walk test (6MWT) alone cannot provide precise physiological insight regarding the specific cause(s) of exercise limitations. We aimed to analyze whether 6MWT is able to properly detect differences in the cardiorespiratory responses between patients with stable coronary artery disease (SCAD) and those with ischemic cardiomyopathy (IC) and determine whether the degree of abnormality in ejection fraction is related with impaired submaximal exercise capacity. Twenty-two subjects with SCAD and 19 subjects with IC underwent a 6MWT while simultaneously using a mobile telemetric cardiopulmonary monitor to assess cardiorespiratory responses.

Renal Function Markers Predicts Extubation Failure in Critically Ill Patients: A Retrospective Study.

Several studies attempt to identify predictors for weaning and extubation from mechanical ventilation (MV) and none have been shown to be particularly accurate. Therefore, the objective of the study was to evaluate whether markers of renal function may be associated with extubation failure. This retrospective study collected data through electronic medical records for 2 consecutive years.

Cardiotoxic and Cardioprotective Effects of Methylene Blue in the Animal Model of Cardiac Ischemia and Reperfusion.

Treatment of patients with myocardial ischemic diseases crucially involves cardiac reperfusion (CR). However, oxidative stress and tissue lesions caused by CR may also lead to lethal complications, such as arrythmias and vasoplegic syndrome (VS). Although methylene blue (MB) has long been used to treat VS due to cardiac ischemia and reperfusion (CIR) and/or surgery because of its vascular effects, MB's effects on the heart are unclear.

EPIDEMIOLOGICAL PROFILE OF PATIENTS WITH TIBIA DIAPHYSIS FRACTURE TREATED AT A TERTIARY LEVEL HOSPITAL.

Objective: To outline the epidemiological profile of tibial fractures treated in a tertiary hospital and explore associations between the characteristics of the fractures and the clinical outcome of postoperative complications.

Methods: Retrospective cross-sectional study involving adult patients diagnosed with tibial fractures who underwent surgical and/or conservative treatment in a tertiary hospital between January 2019 and December 2021. The variables sex, age, mechanism of injury, type and classification of fracture, associated injuries, personal history, length of hospital stay, surgical treatment, post-surgical complications (infections, loss of synthesis material, surgical wound dehiscence) and death.