IMHO, it's time to get the cpr masks out of the first aid kit.

The american heart association standard currently seems to be hands only CPR-apparently the alternating chest compression and relaxation cycle moves some air in the lungs and may be more effective than the 15 compressions/2 breaths version.(http://handsonlycpr.eisenberginc.com/resources.html)

The thing is, what you want between you and the patient is distance and fluid-proof barriers, not a plastic device that puts your face 4 inches from the patient. Transmission of body fluid born pathogens can occur with saliva or...well...any of the rest of the body fluids contacting the eyes, or areas of broken skin. Chest compressions cause aerosol dispersion of body fluids. ER optimists wear gloves, masks and goggles: pessimists add tyvek jumpsuits and hepa respirators and are usin ambu bags or mechanical ventilators, so the provider's face is well away from the patients face.
It is way too easy acquire a bloodborne disease even in the controlled environment of the hospital, even when the providers know the risks and have the protective equipment available to them. Trading rescuers lives for patients lives is not a good bargain.