Experimental Study for Controlling Airborne Contaminant Exposure in Iraqi Negative Pressure Isolation Rooms.

In healthcare settings, controlling airborne contaminants is crucial for ensuring the safety of healthcare workers and patients, especially in isolation rooms designed with negative pressure systems. This paper, a novel experimental study of the distribution of airborne contamination within an Airborne Infection Isolation Room (AIIR) using tracer gas, identifies patients in Iraq to reduce the pollution and infection disease from a patient with COVID-19 or any other Respiratory patient disease by using a negative pressure room Terms of condition at three different Air Change (ACH) 6, 9 and 12 ACH. Concentrations of airborne contaminants in the breathing zone of surgical staff are measured, along with analyses of velocity, temperature, and humidity distribution in the patient's thermal plume. Negative pressure shows acceptable temperature and velocity variations according to the World Health Organization. Higher ACH and AC inlet velocities lead to decreased relative humidity and enhance heat removal efficiency, and air exchange efficiency. Contaminant removal, evaluated through the Contaminant Removal Effectiveness (CRE), exhibits superiority under high Air Conditioner AC inlet modes and increased ACH rates, recording values of 1.1 and 1.2. The study strongly recommends isolation rooms for respiratory patients in negative-pressure ventilated operating rooms to mitigate infection transmission risks to the surgical staff. [ABSTRACT FROM AUTHOR]