Perforation of the cecum resulting from a closed-loop obstruction in a patient with an adenocarcinoma of the sigmoid colon: a case report.

Introduction: Bowel obstruction is one of the principal non-traumatic causes of general surgery emergencies, both in Brazil and worldwide. This condition can be classified according to the degree (complete or incomplete), clinical course (acute or chronic) or nature (mechanical, vascular or functional) of the obstruction.

Case Report: ESS, a 62-year old Brazilian woman from Rio de Janeiro, was admitted to the emergency department complaining of constipation of two weeks' duration.

Cardiovascular Autonomic Dysfunction in Patients with Morbid Obesity.

Background: Morbid obesity is directly related to deterioration in cardiorespiratory capacity, including changes in cardiovascular autonomic modulation.

Objective: This study aimed to assess the cardiovascular autonomic function in morbidly obese individuals.

Methods: Cross-sectional study, including two groups of participants: Group I, composed by 50 morbidly obese subjects, and Group II, composed by 30 nonobese subjects.

Association Between Hemodynamic Profile, Physical Capacity and Quality of Life in Pulmonary Hypertension.

Background: No studies have described and evaluated the association between hemodynamics, physical limitations and quality of life in patients with pulmonary hypertension (PH) without concomitant cardiovascular or respiratory disease.

Objective: To describe the hemodynamic profile, quality of life and physical capacity of patients with PH from groups I and IV and to study the association between these outcomes.

Methods: Cross-sectional study of patients with PH from clinical groups I and IV and functional classes II and III undergoing the following assessments: hemodynamics, exercise tolerance and quality of life.