Question 1: Why use Heat Moisture Exchanger Filters (HMEF)?
HMEF is passive humidification with bacterial/viral filtration efficiency. Gases emerging from Anesthesia machine are dry and room temperature (cold). Tracheal intubation or use of laryngeal mask airway bypasses upper airway modifying pattern of heat and moisture exchange, lungs need 37° & 100% relative humidity. Cilia can stop beating with impaired mucocilliary function includes sputum retention & increased risk of infection. Warmed humidified air is better than cold, dry gases even in short cases.
Question 2: Why use Bacterial Viral Filters (B/V)?
If used on both the inspiratory and expiratory limb, eliminates risk of switching the filtration limb at machine. Expert committees recommend the use of filters for control/prevention of infections.
Mike Pedro, MD: Filter Consideration in the Covid-19 Era. As the COVID-19 pandemic evolves, filtration of mechanical ventilation, such as used in Intensive Care and anesthesia settings, has become an essential factor in infection control. Ideally, at least two filters should be changed with every patient use: in the expiratory port limb at the connection to the machine and at the connector between the circuit and the patient. These locations protect against contamination of the machine and thus the potential for cross contamination or transmission of pathogens when sampling gases for analysis.
Solution: Choose Hisern Medical`s Disposable Breathing Filter. (Recommend: 1HMEF+2BV Filter)
Filter effects, low airway resistance, product quality assurance(As evidenced by the test report of Nielsen Laboratories).
l High-efficiency filter media, bacteria filtration efficiency>99.999%, virus filtration efficiency>99.99%;
l (Heat and moisture exchange type) high wet material, maintaining the warmth and humidification of the airway, to reduce the loss of heat and moisture of the patient.
l Lightweight, to reduce additional heavy on the tracheal connection.
l A variety of specifications to meet the needs of adults and pediatric.
l Combined use, effectively avoiding cross-infection of machines, patients, and medical staff, making it safer.
l The product obtained FDA marketing approval 510 (k) No: K151498
