No usar en atmsferas en las que el contaminante est en concentraciones IDLH inmediatamente peligrosas para la vida y la salud. Limitaciones de uso Aprobado para proteccin respiratoria contra polvos incluyendo carbn, algodn, aluminio, trigo, hierro y slice libre producidos principalmente desintegracin de slidos durante procesos industriales tales como: esmerilado, lijado, trituracin y procesamiento de minerales y otros materiales y neblinas a base de lquidos con o sin aceites. No usar en atmsferas que contengan vapores y gases txicos, asbestos o polvo proveniente de lavado con chorro de arena. La nica responsabilidad del vendedor o fabricante ser la de reemplazar la cantidad de este producto que se pruebe ser defectuoso de fbrica. Ni el vendedor ni el fabricante sern responsables de cualquier lesin personal, prdida o daos ya sean directos o consecuentes del mal uso de este producto. Antes de ser usado, se debe determinar si el producto es apropiado para el uso pretendido y el usuario asume toda responsabilidad y riesgo en conexin con dicho uso.

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SARS appears to spread primarily by close person-to-person contact with symptomatic individuals e. SARS can be spread by touching the skin of other people or objects contaminated with infectious droplets and then touching the eyes, nose, or mouth. Contamination occurs when someone with SARS coughs or sneezes droplets onto themselves, other people, or nearby surfaces.

It also is possible that SARS can be spread further through the air by very small particles. This method is called airborne transmission, but investigations to date suggest that this type of transmission is unusual. It also is possible that SARS may be spread by other ways that are currently not known.

How can health care workers be protected from SARS? These guides recommend that health care workers entering the room of a SARS patient and medical transport workers transporting a patient with suspected SARS use the following: Standard precautions e.

Therefore, care is needed when removing personal protective equipment to avoid contaminating skin, clothing, and mucous membranes.

Standard procedures for removal of personal protective equipment that minimize the potential for self-contamination should be developed based on the equipment used, and healthcare and transport workers should be trained in these procedures. Hand hygiene should be performed following the removal of personal protective equipment.

The category of particulate respirator can be further divided into 1 disposable or filtering facepiece respirators, where the entire respirator is discarded when it becomes unsuitable for further use due to excessive resistance, sorbent exhaustion, or physical damage; 2 reusable or elastomeric respirators, where the facepiece is cleaned and reused but the filter cartridges are discarded and replaced when they become unsuitable for further use; and 3 powered air purifying respirators PAPRs , where a battery-powered blower moves the air flow through the filters.

An N respirator is one of nine types of disposable particulate respirators. These respirators protect only against particles—not gases or vapors. Since airborne biological agents such as bacteria or viruses are particles, they can be filtered by particulate respirators. And those that filter at least Respirators in this family are rated as N, R, or P for protection against oils.

If a disposable respirator does not have these markings and does not appear on one of these lists, it has not been certified by NIOSH. However, the amount of fat and oil in these tiny virus particles is extremely low and is not enough to affect the filter in the N-series respirator. Yes, workers can wear any of the types of particulate respirators for protection against SARS—if they are NIOSH-approved and if they have been properly fit-tested and maintained.

A respirator will work only if it is used correctly. Thus the key elements for respiratory protection are fit-testing and training of each worker in the use, maintenance, and care of the respirator. NIOSH considers each of the nine types of disposable particulate respirators to have similar fit characteristics. Therefore, when a worker is caring for or transporting SARS patients, having a NIOSH-approved respirator that fits well is much more important than whether the respirator is an N or one of the other eight types of disposable particulate respirators.

In health care settings, the use of respirators by workers is regulated under the Occupational Safety and Health Administration OSHA standard for respiratory protection. The OSHA standard also contains requirements for determining that workers can use respirators safely, for training and educating employees in the proper use of respirators, and for maintaining respirators properly. NOTE: Fit-testing and the other OSHA-required procedures are absolutely essential to assure that the respirator will provide the wearer with required protection.

View detailed information on respiratory programsexternal icon , including fit test procedures. The CDC Guidelines for Isolation Precautions in Hospitals recommends that health care workers protect themselves from any disease spread through the air airborne transmission by wearing a respirator at least as protective as a fit-tested N respirator.

If you live in another country, your country may have its own standards for particulate respirators. If these respirators pass testing programs comparable to those used for N respirators, they should protect against SARS as well as the N respirators. Can I use a respirator with an exhalation valve? Usually, yes. An exhalation valve reduces excessive dampness and warmth in the mask from exhaled breath.

The valve opens to release exhaled breath and closes during inhalation so that inhaled air comes through the filter. Health care workers may wear respirators with exhalation valves unless the patient has a medical condition such as an open wound for which a health care worker would normally wear a surgical mask to protect the patient. Similarly, respirators with exhalation valves should not be placed on a patient to contain droplets and prevent spread of infectious particles; surgical masks are adequate for this purpose.

How often do disposable respirators need to be replaced? Once worn in the presence of a SARS patient, the respirator should be considered potentially contaminated with infectious material, and touching the outside of the device should be avoided.

If a sufficient supply of respirators is not available, healthcare facilities may consider reuse as long as the device has not been obviously soiled or damaged e. Data on reuse of respirators for SARS are not available. Reuse may increase the potential for contamination; however, this risk must be balanced against the need to fully provide respiratory protection for healthcare personnel.

If N disposable respirators are reused for contact with SARS patients, implement a procedure for safer reuse to prevent contamination through contact with infectious droplets on the outside of the respirator. Consider wearing a loose-fitting barrier that does not interfere with fit or seal e. Surgical masks should be discarded; face shields should be cleaned and disinfected. Remove the respirator and either hang it in a designated area or place it in a bag. Use care when placing a used respirator on the face to ensure proper fit for respiratory protection and to avoid contact with infectious material that may be present on the outside of the mask.

Perform hand hygiene after replacing the respirator on the face. My hospital uses powered air-purifying respirators PAPRs. Will they protect me from SARS? PAPRs provide a higher level of protection than disposable respirators. Health care facilities in some SARS-affected areas have used higher levels of respiratory protection, including PAPRs, for persons present during aerosol-generating medical procedures such as bronchoscopy on SARS patients.

All used filters should be considered potentially contaminated with infectious material and must be safely discarded. Do surgical masks provide protection against SARS? Surgical masks are not designed for use as particulate respirators and do not provide as much protection as an N respirator. Most surgical masks do not effectively filter small particles from air and do not prevent leakage around the edge of the mask when the user inhales.

If surgical masks do not protect against airborne diseases, why are surgical masks suggested for use against SARS when no N respirators are available? Surgical masks are recommended only as a last resort for health care and medical transport workers exposed to SARS patients when no NIOSH-approved respirator equivalent to or greater than the N is available. SARS appears to be transmitted mainly through direct contact with infectious materials including large respiratory particles , and surgical masks will provide barrier protection against droplets that are considered to be the primary route of SARS transmission.

However, surgical masks may not adequately protect against aerosol or airborne particles, primarily because they do not effectively filter small particles from the air, they allow leakage around the mask, and they cannot be fit tested.

Surgical masks may also be placed on patients with communicable conditions like SARS to contain respiratory droplets and prevent spread of infectious particles. Should I wear a respirator while I am at work or in public? Both CDC and the World Health Organization WHO recommend respirator use for the following workers only: health care workers entering the room of a patient with SARS medical transport workers transporting patients with suspected SARS Respirators are not routinely needed by staff or visitors in other parts of hospitals or other health care facilities where there is no direct contact with patients.

Outside the health care and medical transport settings, CDC does not recommend the routine use of respirators. If a person does contact the SARS virus, it is most likely to be on a surface such as a door knob. The best protection from SARS in public places, including workplaces other than health care and medical transport settings is to wash your hands frequently and avoid touching your eyes or nose.


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