Restarting Elective Bariatric and Metabolic Surgery Under a Security Protocol During the COVID-19 Pandemic-a Prospective Observational Cohort Study.

Background: During the SARS-CoV-2 pandemic, in order to protect the patient and to save hospital beds, cancelation of elective surgeries has become a great challenge. Considering that obesity is a chronic disease and the possible effect imposed by quarantine on weight gain with worsening rates of obesity and metabolic comorbidities, the creation of a protocol for a safe return to bariatric surgery became essential.

Objective: The aim of this study was to identify the incidence of new-onset severe acute respiratory syndrome coronavirus (SARS-CoV-2) symptoms in patients who underwent bariatric procedures during the declining curve period.

Oxidative Stress in Aortas of Patients with Advanced Occlusive and Aneurysmal Diseases.

Background: Aortoiliac occlusive disease (AOD) and abdominal aortic aneurysm (AAA) are very important cardiovascular diseases that present different aspects of pathophysiology; however, oxidative stress and inflammatory response seem be relevant in both of them. Our objective was to evaluate oxidative damage and degree of inflammatory infiltrate in aortas of patients surgically treated for AOD and AAA.

Materials And Methods: Levels of reactive oxygen species (ROS), nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity, and myeloperoxidase (MPO) expression as well as nitrite levels and superoxide dismutase (SOD) and catalase (CAT) activities were evaluated in aortas of patients with AOD (n = 16) or AAA (n = 14), while the control group was formed by cadaveric organ donors (n = 10).

Thoracoabdominal Aortic Aneurysm in a HIV-positive Patient.

Advent of antiretroviral therapy has increased survival of patients with human immunodeficiency virus (HIV) infections, with the result that some of these patients now develop degenerative diseases, such as atherosclerotic aneurysms. Degenerative thoracoabdominal aortic aneurysm is rare in HIV patients. In this report, a 63-year-old male patient with HIV submitted to open repair of thoracoabdominal aortic aneurysm.

Oxidative Stress in Human Aorta of Patients with Advanced Aortoiliac Occlusive Disease.

Introduction: Oxidative stress seems to be a role in the atherosclerosis process, but research in human beings is scarce.

Objective: To evaluate the role of oxidative stress on human aortas of patients submitted to surgical treatment for advanced aortoiliac occlusive disease.

Methods: Twenty-six patients were divided into three groups: control group (n=10) formed by cadaveric organ donors; severe aortoiliac stenosis group (patients with severe aortoiliac stenosis; n=9); and total aortoiliac occlusion group (patients with chronic total aortoiliac occlusion; n=7).

Rupture of celiac trunk aneurysm in patient with Behçet Disease.

We report a case of a ruptured aneurysm of the celiac trunk in a 32-year-old, male patient with Behçet Disease (BD). Aneurysm resection was performed and the patient is well during a follow up of 32 months. To our knowledge, this is the first reported case of a ruptured celiac trunk aneurysm successfully treated in a patient with BD.

Oxidative stress in carotid arteries of patients submitted to carotid endarterectomy. The role of aging process.

Purpose: To evaluated the role of oxidative stress on aging process in patients submitted to carotid endarterectomy.

Methods: Twenty patients were divided into two groups: older group (≥ 70 years old); and the younger group (< 70 years old). We evaluated the reactive oxygen species (ROS) concentration, nicotinamide adenine dinucleotide phosphate (NADPH)-oxidase, superoxide dismutase (SOD) and catalase (CAT) activities as so as nitrite levels in fragments of carotid arteries harvested during carotid endarterectomy for treatment of high grade carotid stenosis.

Effects of L-arginine and L-NAME on ischemia-reperfusion in rat liver.

Purpose: To evaluated the effects of L-arginine (a NO donor) and L-NAME (Nw-nitro-L-arginine methyl ester - a NOS inhibitor) on ischemia-reperfusion in rat livers.

Methods: One hundred fifty two male Wistar rats were divided into four groups: control (simulated surgery); hepatic IR; pretreatment with L-arginine plus hepatic IR; and L-NAME plus hepatic IR. The hepatocellular damage was evaluated at the first, third and seventh days after the procedures through the alanine-aminotransferase (ALT) and aspartate-aminotransaminase (AST) levels, as well as histopathological features: vascular congestion (VC); steatosis (STE); necrosis (NEC); and inflammatory infiltration (INF).

[Results of carotid endarterectomy in octogenarians: a 10-years personal experience].

Purpose: Some investigators consider octogenarians as high risk patients for carotid endarterectomy (CEA). The objective of our study was determine the results of CEA in the octogenarians patients.

Patients And Methods: Between January 1998 and May 2008, 755 CEAs were performed by the first author.

[Surgical treatment of abdominal aortic aneurysm in patients in hemodialysis program].

Introduction: The surgical management of abdominal aortic aneurysm in patients with chronic renal insufficiency (CRI) undergoing hemodialysis raises increasing difficulties due to tissue fragility as bleeding and infection susceptibility.

Purpose: To evaluate the surgical results in patients undergoing hemodialysis submitted to elective repair of the abdominal aortic aneurysm (AAA).

Patients And Methods: Between March 1982 and January 2008, 942 patients undergoing elective repair of abdominal aortic aneurysm (AAA), being 8 patients (0,8%) in hemodialysis program.

[Combined carotid endarterectomy and coronary artery bypass grafting. Analysis of the results].

Objective: To evaluate the results of combined surgery (carotid endarterectomy and coronary artery bypass grafting) in patients with concomitant carotid and coronary artery disease.

Methods: The authors reviewed 49 different reports describing several aspects of the combined surgery in 4788 patients to analyze early events in the perioperative period.

Results: Overall stroke, acute myocardial infarction (AMI), and mortality rates were 4.

The role of nitric oxide pathway in the renal ischemia-reperfusion injury in rats.

Introduction: Nitric oxide (NO), synthesized from L-arginine by the enzyme nitric oxide synthase (NOS), seems to play an ambiguous role during tissue ischemia-reperfusion injury. Our objective was to evaluate the effects of L-arginine, a NO donor, and N(G)-nitro-L-arginine-methylester (L-NAME), a NOS inhibitor, on oxidative stress, renal dysfunction, histologic alterations and surgical mortality rate induced by renal ischemia-reperfusion (RIR) in uninephrectomized rats.

Materials And Methods: One-hundred and ninety-seven Wistar rats were randomized into five experimental groups.