Publications by authors named "Francisco Miguel Vargas-Luna"
Assessment of body composition by dual-energy X-Ray absorptiometry in renal transplant patients, hemodialysis patients, and a control group of healthy subjects.
Clinics (Sao Paulo)
October 2024
Article Synopsis
- Chronic Kidney Disease (CKD) leads to malnutrition and body composition changes, such as increased fat mass and decreased lean mass and bone mineral density, which persist even after a kidney transplant due to immunosuppressive therapy.
- A study comparing body composition among kidney transplant patients, hemodialysis patients, and a healthy control group revealed that kidney transplant patients had lower lean mass and bone mineral density compared to controls, indicating incomplete recovery post-transplant.
- The findings highlight that despite expectations for improved body composition after a kidney transplant, patients still fall short of "normal" values observed in healthy individuals of similar age.
Electrical bioimpedance is a non-invasive and radiation-free technique that was proposed to be used in different clinical areas, however, its practical use is limited due to its low capacity to discriminate between tissues. In order to overcome this limitation, our research group proposes to incorporate the contrast media into the electrical bioimpedance procedure. The main objective of the present study was to assess the crystalloid solutions as a possible contrast media to discriminate between different tissue types in the bioimpedance technique.
View Article and Find Full Text PDFPurpose: Detrusor pressure-volume relationship evaluation by urodynamics provides useful clinical information; however, it is invasive, and requires specific installations. An alternative technique proposed by our research group is the electrical bioimpedance (BI) which is an easily performed and non-invasive method. In this work, we assess the relationship between BI and detrusor bladder pressure in adults with neurogenic lower urinary tract dysfunction.
View Article and Find Full Text PDFBackground: Meal-related symptoms are common in paediatric functional dyspepsia (FD). There are only a small number of paediatric studies assessing mechanisms for meal-related symptoms, and these have not utilized Rome IV criteria. The aim of the current study was to assess gastric myoelectric and autonomic nervous system (ANS) responses to both liquid and solid meals in youth with Rome IV-defined FD.
View Article and Find Full Text PDFBackground/aims: While stress has been implicated in functional dyspepsia (FD), the mechanisms by which stress results in symptoms are not well defined. The aim of the current study was to assess gastric myoelectric and autonomic changes in response to a physical stressor in youth with FD.
Methods: In a group of healthy controls and pediatric FD subjects, we recorded ECG and EGG signals 30 min before and 60 min after, a cold pressor task (CPT).