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Now showing 1 - 10 of 37
  • Publication
    Effect of mechanical circulatory support in the heart failure patient with left-right heart failure condition: A simulation study
    (2012-12-01) Phornphop Naiyanetr; Mahidol University
    , some patient immediately need another RBP on the right side of the heart. The effect of LV-RBP or left ventricular assist device (LVAD) on the right ventricle (RV) has been simulated in both normal RV and pathology RV for education proposes... support was showed in the normal RV. In conclusion, this computer simulation can re-generated the hemodynamics and pressure-volume loop heart failure patient with MCS. ©2012 IEEE.
  • Publication
    A generic discrete-event simulation model for outpatient clinics in a large public hospital
    (2013-01-01) Waressara Weerawat; Juta Pichitlamken; Peerapong Subsombat; Mahidol University; Kasetsart University
    are identified and resource-critical clinics can be prioritized. The simulation model quantifies the chronic, high patient congestion that is prevalent amongst Thai public hospitals with very high patient-to-doctor ratios. Our model can be applied across five...The orthopedic outpatient department (OPD) ward in a large Thai public hospital is modeled using Discrete-Event Stochastic (DES) simulation. Key Performance Indicators (KPIs) are used to measure effects across various clinical operations during
  • Publication
    Hemodynamic simulation of cardiovascular system during rotary blood pump support
    (2013-12-01) Zwe Lin Htet; Phornphop Naiyanetr; Mahidol University
    Rotary blood pumps are increasingly used for supporting blood circulation in heart failure patients. For the simulation of an abstract model of a cardiovascular system, a computer simulation which is a lumped parameter model can be used. Computer... simulations are essential in mathematical modeling to estimate the hemodynamic parameters. In this research, a computer model is implemented to study the possibilities for indirect estimation of hemodynamic parameters and pump control of the heart. The model
  • Publication
    Hemodynamics during Rotary Blood Pump support with speed synchronization in heart failure condition: A modelling study
    (2015-11-04) Zwe Lin Htet; Thin Pa Pa Aye; Thamvarit Singhavilai; Phornphop Naiyanetr; Mahidol University
    in continuous modes are 90 mmHg (8k) and 95 mmHg (11k). The hemodynamics results of this study are comparable in vivo data, clinical data and other simulation studies. Therefore, this simulation enables hemodynamic studies in patients with end-stage heart...) are studied. Computer simulation studies have been conducted to evaluate the performances of these two modes under normal and pathological conditions. The pathological heart condition is simulated by reducing the maximum systolic elestance (Emax
  • Publication
    Modelling and simulation of cardiovascular system with intra-aortic balloon pump
    (2013-12-01) Thin Pa Pa Aye; Phornphop Naiyanetr; Mahidol University
    The intra-aortic balloon pump (IABP) is a mechanical device to be useful in assisting the heart failure patients. The computer simulation of the cardiovascular system with intra-aortic balloon pump has been not only used for research but also
  • Publication
    Sensitivity and packaging improvement of an LCP pressure sensor for intracranial pressure measurement via FEM simulation
    (2019-10-01) Preedipat Sattayasoonthorn; Jackrit Suthakorn; Sorayouth Chamnanvej; Mahidol University
    Copyright © 2019 Institute of Advanced Engineering and Science. All rights reserved. A biocompatible liquid crystal polymer (LCP) pressure sensor is proposed for measuring intracranial pressure (ICP) in Traumatic Brain Injury (TBI) patients. Finite... element method using COMSOL multiphysics is employed to study the mechanical behavior of the packaged LCP pressure sensor in order to optimize the sensor design. A 3D model of the 8x8x0.2 mm LCP pressure sensor is simulated to investigate the parameters
  • Publication
    Effect of continuous flow biventricular assist device on pressure-volume loop: A simulation study
    (2013-09-18) Phornphop Naiyanetr; Mahidol University
    -stage heart failure patients, such as bridge to transplantation, bridge to recovery, and permanent support. Both flow balancing and Starling response of the right and left ventricles should be concerned to prevent the suction event on both right and left... support and full support) were simulated. From all simulations, the suction events in the right ventricle (represented by negative values of right ventricular volume and pressure) were observed during the unbalanced flow conditions of BiVAD support
  • Publication
    Airflow analysis of radiofrequency ablation for asthma therapy by using 3D finite element method
    (2013-12-01) P. Ruxsapong; P. Phasukkit; S. Tungjitkusolmun; S. Prasantamrongsiri; A. Sanpanich; King Mongkut's Institute of Technology Ladkrabang; Mahidol University
    is a new alternative maneuver to the patient and hopefully may extend his lifetime, reduce using of medicines in asthma treatment and also save money on medical care. The simulation results obtained from our three-dimensional finite element method show... for asthma therapy. Asthma patients have shortness of breath, coughing, wheezing, and chest tightness that influence a daily life of patients. All symptoms cause to die, especially in severe symptom patients. Asthma therapy by using radiofrequency ablation
  • Publication
    Numerical simulation of stress distribution of a Femur-Menisci-Tibia bone during normal standing, normal walking, and standing with a cane
    (2014-01-01) A. Prommarat; A. Kammanee; T. Puapansawat; F. Chamchod; Mahidol University; Prince of Songkla University
    . Numerical simulation based on the finite element (FE) method is carried out. Our results suggest that the Von Mises stress of menisci during standing with a cane is lowest while the stress during normal standing is highest among three activities. Our study... highlights that a cane can reduce the Von Mises stress and help prevent bone damage in a patient.
  • Publication
    Effect of left-right heart during biventricular assist device support by speed synchronization: A computer study
    (2019-01-01) Phornphop Naiyanetr; Mahidol University
    © Springer Nature Singapore Pte Ltd. 2019. Biventricular assist device (BiVAD) is a treatment for the end-stage heart failure patients. Normally, after left ventricular assist device (LVAD) implanted in the end-stage heart failure patients, a right.... The pathology level of the heart was regulated by a level of maximum elastance (Emax: 30% of normal heart value) in the heart model. The constant speed mode and co-pulse mode (increasing pump speed in systolic period between 8,000–11,000 rpm) are simulated using