Publications by authors named "Pedro Puech-Leao"

Objective: To evaluate the incidence of malfunction and colonization rates of fully implantable long-term catheters left unflushed during the COVID-19 pandemic; and to evaluate the average cost of transporting each patient to the hospital for flushing.

Methods: During the COVID-19 pandemic, patients reduced the number of hospital visits and stopped flushing their catheters periodically with saline solution. After the pandemic stabilized in 2022, patients who completed chemotherapy treatment had their long-term catheters removed.

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Objective: To evaluate the in hospital and long term outcomes after open or endovascular repair of subclavian and axillary artery injuries.

Methods: This was a retrospective, single centre study. Data were reviewed from patients with subclavian and or axillary injuries who presented to the authors' centre between January 2009 and December 2022.

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Background: Venous compression syndromes are clinical conditions in which the large veins are compressed by other anatomical structures. Laboratory simulations may help us better understand the hemodynamics in venous compressions by creating situations similar to those seen in vivo. The aim of this study is to produce a model of the caval bifurcation using a polymer with distensibility similar to the human vena cava.

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Introduction: Hemodynamic Depression (HD) characterized by hypotension and bradycardia is a complication of carotid surgery due to direct autonomic stimulation in the carotid sinus. The authors believe the incidence of HD is high and possibly related to major cardiac complications.

Methods: Analysis of patient records during admissions for carotid surgery between January 2014 and December 2018 in two hospitals.

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Background: The current study aimed to evaluate the distance between the right common iliac artery (RCIA) and lumbar vertebra in asymptomatic patients in order to determine whether such distance was statistically correlated with the left common iliac vein (LCIV) diameter (LCIVD) and to investigate if both measures were related to demographic characteristics and anthropometric data, such as sex, age, height, and body mass index (BMI).

Methods: In this descriptive and uncontrolled anatomic study, data from high-definition computed tomography (CT) angiography images of living kidney donors without a medical history of chronic venous insufficiency or past deep vein thrombosis (DVT) were analyzed. The RCIA crossed over the LCIV in 311 individuals, who were then included in this study.

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Background: To evaluate a workshop using a low-fidelity simulator for training vascular surgery residents in vascular anastomosis during the COVID-19 pandemic.

Design: Prospective, controlled, single-center.

Methods: Vascular surgery residents at the São Paulo University Medical School were enrolled in the COVID Group (five post graduation year 3 residents) or Control Group (five PGY-4 residents).

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Background: Primary hyperhidrosis is a condition characterized by excessive sweating, inconsistent with the needs for thermoregulation.

Objective: To assess the effectiveness and the change in the quality of life of patients undergoing bilateral VATS (video-assisted thoracoscopic sympathectomy) for treatment of hyperhidrosis, in a large case series.

Design And Setting: Cohort study conducted in a tertiary hospital specializing in hyperhidrosis located in São Paulo, Brazil.

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Background: This study aimed to analyze the effect of frailty on walking capacity and physical activity levels of patients with peripheral artery disease (PAD).

Methods: A cross-sectional study including 216 symptomatic PAD patients (e.g.

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Background: The mechanisms underlying functional impairments in symptomatic PAD patients are controversial and poorly understood. Endothelial dysfunction and arterial stiffness have been proposed as potential mechanisms related to functional impairment in symptomatic PAD patients, however, more studies are needed to confirm these associations.

Objective: To analyze the association between vascular function and walking impairment in patients with peripheral arterial disease (PAD) and symptoms of claudication.

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Background: The thoracic aorta is a site of multiple pathological processes, such as aneurysms and dissections. When considering the development of endovascular devices, this vessel has been extensively manipulated because of aortic diseases, as well as to serve as a route for procedures involving the head and neck vessels. Therefore, the aim of the present study was to obtain biomechanical experimental information about the strength and deformability of this vessel.

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Objective: To investigate the prevalence of compensatory hyperhidrosis following videothoracic sympathectomy to treat palmoplantar hyperhidrosis and its effect on sweating in the chest, abdomen, back and thighs. Furthermore, to evaluate the concordance between a subjective and an objective method of assessment for compensatory hyperhidrosis.

Methods: Forty patients with combined palmar and plantar hyperhidrosis who underwent video-assisted thoracoscopic sympathectomy (15 women and 25 men, with a mean age of 25 years) were prospectively followed for 1 year.

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Objectives: Studies have identified correlations between the psychological characteristics of individuals with primary hyperhidrosis (HH), the degree of sweating, and the quality of life (QoL). This study aimed to evaluate the prevalence of anxiety and depression symptoms in patients with HH before and after oxybutynin treatment.

Methods: Data were collected from 81 patients.

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Purpose: Intravascular embolization of hemodialysis and central venous catheters is a rare but potentially serious complication. With the increasing use of catheters in medical practice, we are often faced with this type of complication. Novel, simple, and low-cost techniques are needed for foreign body extraction in order to reduce cardiovascular risks.

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Background: To examine the associations between physical activity (PA) and sedentary behavior (SB) with walking capacity and the effects of reallocating time from SB to PA in patients with symptomatic peripheral artery disease (PAD) using compositional data analysis.

Methods: This cross-sectional study included 178 patients (34% females, mean age = 66 [9] y, body mass index = 27.8 [5.

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Objectives: Remarkable changes in the epidemiology of abdominal aortic aneurysm (AAA) have occurred in many countries during last few decades, which have also affected Brazilian mortality concurrently. This study aimed to investigate mortality trends related to AAA mortality in Brazil from 2000 to 2016.

Methods: Annual AAA mortality data was extracted from the public databases of the Mortality Information System, and processed by the Multiple Cause Tabulator.

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Objectives: Although the practice of physical exercise in patients with intermittent claudication (IC) is often encouraged, adherence is low. The difficulty in performing physical training may be related to the psychological characteristics of patients with claudication. To verify the association between anxiety and depression symptoms and barriers to physical exercise and walking capacity in patients with IC.

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The aim of the study was to verify the effects of creatine (Cr) supplementation on functional capacity (walking capacity; primary outcome) and calf muscle oxygen saturation (StO) (secondary outcome) in symptomatic peripheral arterial disease (PAD) patients. Twenty-nine patients, of both sexes, were randomized (1:1) in a double-blind manner for administration of placebo (PLA, = 15) or creatine monohydrate (Cr, = 14). The supplementation protocol consisted of 20 g/day for 1 week divided into four equal doses (loading phase), followed by single daily doses of 5 g in the subsequent 7 weeks (maintenance phase).

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Introduction: Splanchnic artery aneurysms (SAAs) represent a rare and potential life-threatening disease with a documented incidence of 0.1-2.0%.

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Background: The costoclavicular space is a common site of thoracic outlet syndrome. When there is no anatomical alteration, the diagnosis of thoracic outlet syndrome is difficult. Several authors relate costoclavicular distance to symptoms of thoracic outlet syndrome; however, there is no standardized site for measurement of the costoclavicular distance.

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Objectives: To investigate whether radiofrequency endovenous ablation (RFA) of saphenous and perforating veins increases venous leg ulcer (VLU) healing rates and prevents ulcer recurrence.

Method: This prospective, open-label, randomized, controlled, single-center trial recruited 56 patients with VLU divided into: compression alone (CR, N = 29) and RFA plus compression (RF, N = 27). Primary endpoints were ulcer recurrence rate at 12 months; and ulcer healing rates at 6, 12, and 24 weeks.

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Background: Six-min walking test (6MWT) has been widely in patients with symptomatic peripheral artery disease (PAD) to quantify the walking impairment and the efficacy of different therapeutic interventions. Despite the aforementioned usefulness of 6MWT for PAD, the information provided by this test goes beyond the meters walked. The aim of this study was to describe the relative values of 6MWT and body weight-walking distance product (DW) in patients with symptomatic PAD.

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Background: To analyze the impact of interarm blood pressure difference (IAD) on functional and cardiovascular parameters in patients with peripheral artery disease (PAD).

Methods: Ninety-eight patients with PAD were recruited in this cross-sectional study. Patients with differences between the right and left arms of systolic and/or diastolic blood pressure ≥10 mm Hg were classified as IAD, whereas the remaining patients were classified as PAD control subjects.

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Background: Patients with peripheral artery disease (PAD) present a high prevalence of obesity and metabolic syndrome, as well as diseases related to cardiovascular dysfunction. However, whether obesity influences walking capacity and cardiovascular function in patients with PAD is poorly understood.

Objectives: The objective of this study was to analyze the impact of obesity on walking capacity and cardiovascular parameters in patients with PAD.

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