Hand Washing - Hand Antiseptics

Hand Antiseptics

Liquid hand antiseptics are much more effective germ killers than gel and foam hand sanitizers. To use in a medical or surgical setting a sterile stainless bowl is filled with antiseptic and both hands are dipped and rinsed in the liquid up to the elbows. The hands and lower arms are removed from the liquid, rubbed and allowed to dry. After, drying in approximately 30 to 60 seconds the healthcare provider is gloved and gowned.

Alcohol rubs and hand antiseptics (biocides) kill microorganisms. Current scientific evidence has not demonstrated a link between the use of topical antimicrobial formulations and antiseptic or antibiotic resistance. Antiseptics (biocides) have multiple (thousands) of nonspecific killing sites on and in the microbial cell which cannot easily mutate. Antibiotics and antibacterial soaps (triclosan) have one very specific killing site on and in the microbial cell which can easily mutate. Antibiotic resistance has no effect on the effectiveness of antiseptics.

Alcohol rubs and combination hand sanitizers are effective at killing some germs on the hands. Many clinical studies have shown that alcohol rubs containing two germ killers (i.e., alcohol and chlorhexidine gluconate or benzalkonium chloride) are significantly better germ killers than alcohol rubs containing alcohol alone.

However alcohol rub sanitizers are not appropriate for use when the hands are visibly dirty, soiled. Visible soiling of any sort on the hands must be washed with soap and water because alcohol-based hand rubs are less effective in the presence of organic material. In addition, alcohols may not be effective against non-lipid-enveloped viruses (e.g., Noroviruses) as enveloped viruses but they are still effective. Hand antiseptics and soap and water will not kill the endospores of bacteria (e.g., Clostridium difficile and Anthrax) and the spores of protozoa (e.g., Giardia lamblia) but soap and water may wash them down the drain. When such microorganisms are likely to be encountered, soap and water hand washing followed by use of a good hand antiseptic is preferable.

Hand washing with hand sanitizer (hand antiseptic) is effective in cleaning staph aureus and the bacteria that are causing these staph infections, but alcohol-based hand sanitizers and soap and water are not effective in killing spore forming organisms because alcohol or soap will not destroy bacterial spores. Washing hands with soap and water may wash the spores down the sink.

In the U.S. alcohol rubs have been banned from some schools because of flammability concern. The fire department allows Tallahassee Memorial Hospital to have a certain amount of hand sanitizer per smoke compartment, and supply it up to that limit.