CFD를 이용한 격리병동의 격리성능 검토

Abstract

Purpose: In this study, we performed ventilation simulations for a standard isolation ward includingthree intensive care rooms, one anteroom(buffer room), and its recommended ventilationequipments. The purpose of this study is to predict outflow of pathogenic bacteria from patientbreath to verify the reliability and the safety of the isolation ward. Methods: We suppose threescenarios of the movement of medical staff. The leakage of patient’s breath to out of the ward ispredicted in these scenarios using CFD simulations. Results: The patient’s breath leakage rate to outof the ward in scenario 1 according to room air changes per hour(ACH : 6 and 12) is predictedto be 0.000057% and 0.00002%, respectively. The patient’s breath leakage rate to out of the wardin scenario 2 according to room air changes(ACH : 6 and 12) is predicted to be 0.00063% and0.00019%, respectively. The patient’s breath leakage rate to out of the ward in scenario 3, whichis the worst case(6 room air changes) is predicted to be 0.1%. Implications: Through the ventilationsimulation like that in this study, the reliability and the safety on isolation performance of variousplan of isolation ward are predicted quantitatively.