Navigation Links
Face Masks for Patients May Leak, Spread Germs
Date:10/9/2009

Health-care workers should take precautions, especially given H1N1 pandemic, experts say

FRIDAY, Oct. 9 (HealthDay News) -- Health-care workers, take note: Hospital patients using positive pressure ventilation masks to help them breathe may be spreading germs every time they exhale, a new study finds.

The masks can leak exhaled air up to one meter from patients receiving treatments, spreading contagious respiratory illness within a hospital, researchers say. This may be of particular concern if the patient has the highly contagious H1N1 swine flu.

"Health-care workers should take adequate respiratory precautions -- wearing N95 masks and personal protective equipment -- when providing noninvasive ventilatory support to patients with pneumonia of unknown etiology complicated by respiratory failure, including patients with pandemic H1N1 influenza," said lead researcher Dr. David S. Hui, from the department of medicine and therapeutics at the Chinese University of Hong Kong.

The report is published in the October issue of Chest.

For the study, Hui's team measured air leakage from two commonly used positive pressure ventilation masks, the Respironics ComfortFull 2 mask and the Image3 mask. The test was done on a patient simulator, which mimicked a patient with lung injury.

These masks fit over the patient's nose and mouth and provide a continuous flow of air at a steady pressure to help the patient breathe. They are used for patients with heart failure, chronic obstructive pulmonary disease (COPD), asthma and sleep apnea in addition to pneumonia.

With both models and using negative pressure, the researchers found substantial exposure to exhaled air occurs within one meter of patients receiving non-invasive ventilation in an isolation room. But far more leakage and room contamination occurred from the Image 3 mask, especially at higher pressures, Hui said.

Hui said the study results argue for avoiding the use of high pressure, which will lead to more exhaled air dispersion, and "exhalation devices, which will lead to widespread exhaled air dispersion."

Dr. Roland Schein, professor of medicine in the division of pulmonary, critical care and sleep medicine at the University of Miami Leonard M. Miller School of Medicine, said it is well-known that these masks can spread contagious germs.

"The concern has always been with open systems and highly infectious pathogens. People within a certain range are at risk and need to take precautions to reduce those risks," Schein said.

This study has defined how far those germs can spread, he added.

Health-care workers caring for patients using these masks should take precautions, including face masks and protective clothing, Schein said. This is especially important now with "the concerns about H1N1 and other respiratory pathogens," he said.

More information

For more information on respiratory protection, visit the U.S. Occupational Health and Safety Administration.



SOURCES: David S. Hui, M.D., department of medicine and therapeutics, the Chinese University of Hong Kong; Roland Schein, M.D., professor, division of pulmonary, critical care and sleep medicine, University of Miami Leonard M. Miller School of Medicine; October 2009 Chest


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Surgical masks vs. N95 respirators for preventing influenza among health care workers
2. Surgical Masks Help Ward Off Flu, Maybe
3. Nurses File Cal-OSHA Complaint After Hospital Refuses to Supply Swine Flu Masks for Units with Infected Patients
4. Viroblock SA Reports a 99% Boost of Efficacy of Facemasks Against H5N1
5. Silver Shield Masks Assist in the Fight Against Flu
6. Will Face Masks Protect Against Swine Flu?
7. ReStockIt.com Greatly Cutting Prices on Hand Sanitizers, Masks to Help Combat Swine Flu Epidemic
8. Study unmasks how ovarian tumors evade immune system
9. Handwashing, Masks Beat Drugs at Fighting Flu
10. Genomic Health Announces Data Confirming Manual Microdissection of Biopsy Cavities Is Essential for Accurate Recurrence Risk Assessment in Early-Stage Breast Cancer Patients
11. Patients who received donated pacemakers survive without complications
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/27/2016)... ... May 27, 2016 , ... Aimed ... by inspiring human interest stories, courtesy of leaders in the nursing and health ... the industry, from leading advocates and associations—namely Jones & Bartlett Learning. , Jones ...
(Date:5/27/2016)... Wis. (PRWEB) , ... May 27, 2016 , ... ... $90,000 in scholarships to students studying complementary medicine. Allison Outerbridge is this year’s ... accepted her award on May 18 at the university’s Student Leadership Awards ceremony. ...
(Date:5/26/2016)... ... May 26, 2016 , ... Despite last week’s media reports ... Yellen and company to wait until March 2017 for an interest rate increase, according ... Robinson College of Business. , “The Federal Open Market Committee (FOMC) dot charts are ...
(Date:5/26/2016)... ... 2016 , ... W.S. Badger Co. Inc ., the maker of certified ... Work Works Award for its use of effective workplace strategies to increase business and ... administered by the Families and Work Institute (FWI) and the Society for Human Resource ...
(Date:5/26/2016)... ... May 26, 2016 , ... Intalere, the healthcare industry leader ... its inaugural Member Conference at the Paris Hotel in Las Vegas, Nev., May ... of America’s healthcare providers. , The conference was highlighted by the announcement of ...
Breaking Medicine News(10 mins):
(Date:5/25/2016)... , May 25, 2016 MedDay, ... disorders, announces that an oral presentation entitled "High doses of ... MS-SPI trial" will be given by Professor Ayman Tourbah ... 2nd Congress of the European Academy of Neurology (EAN) in ... and related disorders 3" will take place on Sunday, 29 ...
(Date:5/24/2016)... , May 24, 2016 ... Markt gebracht, die es Ärzten erlaubt, ihre Expertise ... behandeln: MDLinking kombiniert Live Streaming mit einer Instant-Messaging-Funktion ... zu kommunizieren. Mediziner in Europa, Afrika, Asien und ... bereits für die Plattform registriert. Information ...
(Date:5/24/2016)...   , Study met both ... in , Excellent plus Good ... of the ascending colon   ,      ... announced new positive data from the phase III MORA study for ... litre PEG with ascorbate. The study met both primary endpoints showing ...
Breaking Medicine Technology: