7/21/2023 0 Comments Small caliber vessel meaning![]() There were also significant increases in the markers of inflammation, blood leukocyte counts and serum CRP values, in bedridden patients after transoral conventional EGD, but Thus, for bedridden patients with PEG feeding, who were examined in the supine position, transoral conventional EGD more severely suppressed cardiopulmonary function than transnasal small-caliber EGD. ![]() In Study 2, crossover analysis showed statistically significant increases of the RPP at 2 min after intubation and the end of endoscopy (26.8 and 34.6 vs 3.1 and 15.2, P = 0.044, P = 0.046), and decreases of SpO(2) (-0.8% vs -0.1%, P = 0.042) during EGD with transoral conventional in comparison with transnasal small-caliber endoscopy. Significant differences of the RPP were not found between conventional transoral and transnasal small-caliber EGD. In Study 1, we observed significant decreases in SpO(2) during conventional transoral EGD, but not during transnasal small-caliber EGD (0.24% vs -0.24% after 2 min, and 0.18% vs -0.29% after 5 min, P = 0.034, P = 0.044). To assess the risk for endoscopy-related aspiration pneumonia during EGD, we also measured blood leukocyte counts and serum C-reactive protein (CRP) levels before and 3 d after EGD in Study 2. We evaluated cardiopulmonary effects by measuring arterial oxygen saturation (SpO(2)) and calculating the rate-pressure product (RPP) (pulse rate x systolic blood pressure/100) at baseline, 2 and 5 min after endoscopic intubation in Study 1. For the crossover analysis, we enrolled 30 bedridden patients with percutaneous endoscopic gastrostomy (PEG) (Study 2). For the comparative study, we enrolled 240 elderly patients aged > 65 years old. One prospective randomized comparative study and one crossover comparative study between transnasal small-caliber EGD and transoral conventional EGD was done (Study 1). To evaluate the safety of unsedated transnasal small-caliber esophagogastroduodenoscopy (EGD) for elderly and critically ill bedridden patients. Yuki, Mika Amano, Yuji Komazawa, Yoshinori Fukuhara, Hiroyuki Shizuku, Toshihiro Yamamoto, Shun Kinoshita, Yoshikazu ![]() Unsedated transnasal small-caliber esophagogastroduodenoscopy in elderly and bedridden patients. The method is robust and reliable for width estimation in images with pathologies and artifacts, with performance independent of the range of diameters. A precision close to the observers is achieved, outperforming other state-of-the-art methods. The method is evaluated on the REVIEW public dataset. Finally, the parameters of the best-fit model are used for determining the vessel width through regression using ensembles of bagged regression trees with random sampling of the predictors (random forests). A novel parametric model (DoG-L7) is used, consisting on a Difference-of-Gaussians multiplied by a line which is able to describe profile asymmetry. Then, model fitting is applied to the smoothed profiles. Intensity profiles are extracted perpendicularly to the vessel, and the profile lengths are determined. First, vessels are segmented from the image, vessel centerlines are detected and individual segments are extracted and smoothed. An automatic method based on vessel crosssection intensity profile model fitting for the estimation of vessel caliber in retinal images is herein proposed. However, the clinical assessment is tiresome and prone to errors, motivating the development of automatic methods. These caliber changes can be evaluated using eye fundus images. Retinal vessel caliber changes are associated with several major diseases, such as diabetes and hypertension. Estimation of retinal vessel caliber using model fitting and random forestsĪraújo, Teresa Mendonça, Ana Maria Campilho, Aurélio
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