CAVIEDES SOTO, IVAN RICARDO
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CAVIEDES SOTO, IVAN RICARDO
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icaviedes@udd.cl
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25935759500

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Characterization of pleuroparenchymal fibroleastosis in two respiratory reference centers in santiago, chile

2020 , Gina Miranda , Laura Mendoza , NADIA HERRERA , Vivianne Agar , Claudio Silva , CAVIEDES SOTO, IVAN RICARDO

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Anal and Rectal Syphilis on F-18 FDG PET/CT

2008 , Rossana Pruzzo , Francisca Redondo , Horacio Amaral , GLASINOVIC VERNON, ESTEBAN ANDRES , CAVIEDES SOTO, IVAN RICARDO , Juan Carlos Glasinovic

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Non-Answered Questions in Patients with Endobronchial Valve Placement for Lung Volume Reduction

2018 , CAVIEDES SOTO, IVAN RICARDO , Gonzalo Labarca , Hugo G. de Oliveira , Felix J.F. Herth , Sebastián, Fernandez-Bussy

Endoscopic lung volume reduction is a minimally invasive procedure performed to reduce the space occupied by the emphysemas’ lobes. This procedure has been demonstrated to be beneficial for patients with advanced chronic obstructive pulmonary disease and severe hyperinflation. The use of endobronchial valves is increasing, as well as the number of reports of adverse events. The most common complications after the procedure are a pneumothorax, bleeding, infections, the need for valve removal, and valve expulsion. We have recently treated a patient who achieved immediate left upper lobe atelectasis but developed a pneumothorax on the 6th day and near-fatal kinking of the left lower lobe bronchus. This patient had asphyctic episodes probably due to a functional left pneumonectomy. We should consider this unusual complication in patients undergoing endoscopic lung volume reduction whose condition worsens after achieving complete lobar atelectasis.

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Primary mediastinal small cell melanoma achieved by EBUS-TBNA

2015 , Sebastian Fernandez-Bussy , Gonzalo Labarca , CASTRO MENDEZ, ALEX , CAVIEDES SOTO, IVAN RICARDO

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Assessment of fitness to fly in patients with respiratory disease

2006-09-01 , CAVIEDES SOTO, IVAN RICARDO , Soto F, Rodrigo

To keep a pressure that allows human life, commercial airplanes need to pressurize their cabins, which mean an equilibration between the fuselage structure, the fuel consumption and the operational costs. In this condition they can only maintain cabin pressures of a simulated altitude of 8,000 feet. The Dalton's law indicates that the inspired partial pressure of oxygen is severely reduced, meaning a real hypoxic condition for humans. Another physical modifications that take place in this artificial media, such as low air humidity and reduced vital capacity because of abdominal gas decompression. These alterations are well tolerated by normal individuals, but this is not the case for chronic respiratory patients. They suffer a severe deterioration of their oxygenation. There are only limited studies about patients in these conditions. On the other hand, control has not been obligatory and the decision to allow the flight depends on the pulmonary physician's advice or on the patient's own decision. In this article we discuss general concepts about this merging problem and describe some rational ways to evaluate these patients based on available information. © 2006 Sociedad Chilena de Enfermedades Respiratorias.

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Exploring Initialization Strategies for Metaheuristic Optimization: Case Study of the Set-Union Knapsack Problem

2023 , José García , Andres Leiva-Araos , Broderick Crawford , Ricardo Soto , Hernan Pinto

In recent years, metaheuristic methods have shown remarkable efficacy in resolving complex combinatorial challenges across a broad spectrum of fields. Nevertheless, the escalating complexity of these problems necessitates the continuous development of innovative techniques to enhance the performance and reliability of these methods. This paper aims to contribute to this endeavor by examining the impact of solution initialization methods on the performance of a hybrid algorithm applied to the set union knapsack problem (SUKP). Three distinct solution initialization methods, random, greedy, and weighted, have been proposed and evaluated. These have been integrated within a sine cosine algorithm employing k-means as a binarization procedure. Through testing on medium- and large-sized SUKP instances, the study reveals that the solution initialization strategy influences the algorithm’s performance, with the weighted method consistently outperforming the other two. Additionally, the obtained results were benchmarked against various metaheuristics that have previously solved SUKP, showing favorable performance in this comparison.

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Dyspnea Postpulmonary Embolism

2020 , CAVIEDES SOTO, IVAN RICARDO , Rodrigo Soto

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Minute ventilation to carbon dioxide production ratio is a simple and non-invasive index of ventilatory inefficiency in mechanically ventilated patients: proof of concept

2017 , René López , CAVIEDES SOTO, IVAN RICARDO , Jerónimo Graf

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Airway fibroepithelial polyposis

2017 , Gonzalo Labarca , CAVIEDES SOTO, IVAN RICARDO , Macarena R. Vial , Yumay Pires , Erik Folch , Adnan Majid , Sebastián, Fernandez-Bussy

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Marijuana Use, Respiratory Symptoms, and Pulmonary Function

2019 , CAVIEDES SOTO, IVAN RICARDO , Gonzalo Labarca , CLAUDIO SERGIO SILVA FUENTE ALBA , Sebastian Fernandez-Bussy

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