Hand Washing (Hand Hygiene)

Article Author:
Tammy Toney-Butler
Article Editor:
Niki Carver
7/30/2019 3:16:07 PM
PubMed Link:
Hand Washing (Hand Hygiene)


Some healthcare professionals began hand washing in the patient-care setting in the early 19th century. The practice evolved over the years with evidential proof of its vast importance and coupled with other hand-hygienic practices, decreased pathogens responsible for nosocomial or hospital-acquired infections (HAI).[1][2][3]

Contaminated hands of healthcare providers are a primary source of pathogenic spread. Proper hand hygiene decreases the proliferation of microorganisms, thus reducing infection risk and overall healthcare costs, length of stays, and ultimately, reimbursement.

According to the Centers for Disease Control and Prevention (CDC), hand hygiene is the single most important practice in the reduction of the transmission of infection in the healthcare setting.[4][2]


According to the CDC, understanding the importance of hand hygiene and its impact on the pathogenic spread of microorganisms is best understood when one understands the anatomy of the skin. The skin serves as a protective barrier against water loss, heat loss, microorganisms and other environmental hazards.[5]

Structurally, the skin is made up of an outer, superficial layer known as the stratum corneum, the epidermis, dermis, and the hypodermis. Healthy skin is colonized with bacteria or transient skin flora. These organisms vary in number depending upon body location. Hand washing can remove them. Healthcare workers come in contact with these transient skin flora through direct, close contact with patients or contaminated inanimate objects or environmental surfaces. Healthcare-associated infections are a result of these transient organisms.[6][7][8][9]


According to the CDC, hand hygiene encompasses the cleansing of your hands by using hand washing with soap and water, antiseptic hand washes, antiseptic hand rubs such as alcohol-based hand sanitizers, foams or gels, or surgical hand antisepsis. Indications for hand washing include when hands are visibly soiled, contaminated with blood or other bodily fluids, before eating, and after restroom use. Hands should be washed if potential exposure to Clostridium difficile, Norovirus, or Bacillus anthracis.[10][11]

In 2009, the World Health Organization (WHO) highlighted preset guidelines known as the "Five Moments for Hand Hygiene."

  1. Before touching or coming into contact with a patient
  2. Before performing a clean or aseptic procedure
  3. After an exposure risk to bodily fluids and glove removal
  4. After contact with a patient and their immediate surroundings
  5. After touching an inanimate object in the patient's immediate surroundings even if no direct patient contact

Alcohol-based hand sanitizers are the recommended product for hand hygiene when hands are not visibly soiled. Appy alcohol-based products per manufacturer guidelines on dispensing of the product. Typically, 3 mL to 5 mL in the palm, rubbing vigorously, ensuring all surfaces on both hands get covered, about 20 seconds is required for all surfaces to dry completely.

Patient and facility healthcare professionals are monitored for hand-washing practices, and they are conforming to hand-hygiene practices. This practice is becoming increasingly more popular as healthcare professionals strive for a safety culture.


Artificial nails and nail extensions contain pathogens in the subungual spaces; thus, they pose a threat to microorganism transmission in the healthcare arena. Therefore, it is recommended that healthcare professionals do not use them. Well-manicured nails and adherence to artificial nail policies outlined in facility-specific guidelines are vital to hand hygiene practices.


Handwashing is the act of washing hands with soap, either antimicrobial or nonantimicrobial and water for at least 15 to 20 seconds with a vigorous motion to cause friction making sure to include all surfaces of the hands and fingers.

It requires a specific skill set to ensure proper technique. 

Handwashing Technique

  • Begin by standing in front of the sink and taking care not to touch sink surfaces with hands or uniform/lab coat.
  • If hands touch sinks at any time during this process, they are considered contaminated, and you must start the process over.
  • Turn on the warm water. Allow water to wet hands and wrists thoroughly.
  • Remember to keep hands and forearms lower than your elbows, so cross-contamination from water running back does not occur.
  • Water should flow in a manner from least to most contaminated areas such as the hands. Microorganisms get washed down the sink. 
  • Apply approximately 3 mL to 5 mL of an antiseptic soapy solution. Soap needs distribution evenly with a nice lather making sure all areas of hands receive covering in soap. 
  • Next, use friction or rubbing of hands and wrists for no less than 15-20 seconds to ensure removal of germs.
  • Use a timer or timed sink if available.
  • This vigorous rubbing of hands and wrists will include anterior and posterior surfaces, cuticle area, underneath nails, and in between each finger.
  • Leave no part of the hand or wrist untouched.
  • Interlace fingers, rub palms and backs of hands at least five times each to ensure all areas have coverage. 
  • The World Health Organization (WHO) recommends 6 steps in hand hygiene. This includes palm to palm, right palm over left dorsum and vice versa, palm to palm with fingers interlaced, backs of fingers to opposing palms, rubbing of thumbs and fingertips.
  • Rinse hands and wrists making sure all soap has been successfully washed off.
  • When rinsing off water remember to keep hands down and elbows up, then dry hands and wrists entirely with clean or disposable towels.
  • Throw towels away if disposable or place inappropriate place/hamper/bin without coming into contact with these objects.
  • The end of handwashing will involve making sure you do not recontaminate your hands by touching sink or faucet handles to turn the water off. Once hands are washed and dried, you must use a towel to turn off water and then dispose of it in the appropriate container. 
  • Surgical sinks/handwashing stations have timers such as in trauma bays that automatically shut off at specific time intervals. These guard against recontamination of hands/wrists by ensuring there is no need to turn the water off manually.


Healthcare professionals carrying for high-risk patients that are immunocompromised, severely neutropenic, or have infections with pathogens that are multidrug resistant or virulent, must perform hand hygiene with a recommended antiseptic solution such as chlorhexidine, povidone-iodine, hexachlorophene, triclosan or parachlorometaxylenol (PCMX). Institutional policies and manufacturer guidelines will guide you in the care of these individuals.

Remember, handwashing is a requirement if potential exposure to Clostridium difficile, Norovirus, or Bacillus anthracis. Clostridium difficile and Bacillus anthracis contain spores, and none of the agents used in antiseptic handwash or hand-rub preparations are reliably sporicidal. In these cases, vigorous handwashing will assist in the removal of the spores from the skin.

Studies have shown that chlorhexidine use in surgical hand antisepsis dramatically reduces pathogens compared to povidone-iodine solutions. Antiseptic hand scrubs intended for use as surgical hand antisepsis agents get evaluated for their performance in the reduction of the number of bacteria released from hands over a specified period and during prolonged use.

According to the CDC's 2002 report, established guidelines recommend that agents used for surgical hand scrubs should reduce microorganisms on intact skin in a substantial manner, contain a nonirritating antimicrobial preparation, have broad-spectrum activity, and be fast-acting and persistent. Studies have demonstrated that formulations containing 60% to 95% alcohol alone or 50% to 95% in combination with other products lower bacterial counts on the skin immediately post-scrub more effectively than other agents.


Surgical hand antiseptic practices began in the late 1800s and remain vital to the prevention of infection today. Surgical hand antisepsis or hand hygiene for surgery requires a different set of skills than regular handwashing techniques.

According to the CDC 2002 guideline, "Hand Hygiene in the Healthcare Settings," hand hygiene for surgery follows specific vital steps using either an antimicrobial soap or an alcohol-based hand sanitizer before donning sterile gloves for surgical procedures.

Surgical Hand Antisepsis Steps

  • First, remove all jewelry such as rings, watches, and bracelets before beginning the surgical hand scrub.
  • Inspect hands for cuts, cuticle damage, open lesions or abrasions.
  • Apply surgical shoe covers, hats, caps, masks, and eye protection next.
  • Then, turn on water using foot/knee controls to desired warm temperature.
  • Now perform a pre-rinse ensuring soap gets to about two inches above the elbows remembering the hands must be kept above the elbows at all times during this process as well as during the rinse.
  • Begin debris removal from underneath fingernails using a nail pick while the water is running.
  • When performing surgical hand antisepsis using an antimicrobial agent, scrub hands, fingers, and forearms for 2 to 6 minutes typically, but follow manufacturer guidelines and facility-specific policies and procedures. Some institutions suggest a certain number of strokes when cleansing the nails, palms, hands, and forearms.
  • Brush methods may be used and are facility specific. Long scrub times (e.g., 10 minutes) are not a recommendation due to potential to irritate hands and nonsupporting evidence of its benefit versus risk.
  • Shorter scrub times with a two-stage surgical scrub technique may be standard in some institutions.
  • Remember, when rinsing soap/agent off, allow water to run off at the elbows, ensuring the hands remain clean and free of microbes.
  • Foot or knee controls are used to turn the water off.
  • Hands stay elevated and away from the body at all times.
  • Approach sterile field, grasp towel, avoid dripping excess water on your sterile field, and dry one hand.
  • Obtain a new sterile towel or reverse the first towel and dry the other hand. 
  • Drop towel into a nearby linen hamper or carefully handoff to another member of the healthcare team.
  • After application of the alcohol-based product or antiseptic hand rub as recommended, allow hands and forearms to dry thoroughly before donning sterile gloves.

Clinical Significance

Hand hygiene practices are paramount in reducing cross-transmission of microorganisms, nosocomial or hospital-acquired infections and the risk of occupational exposure to infectious diseases.

Mortality and morbidity increase in the presence of nosocomial infections, thus diligent hand hygiene is essential to providing safe, cost-efficient, quality care to our patients.

Educational programs for patients and healthcare providers, ergonomics, and staffing ratios all play a role in hand hygiene compliance.

Enhancing Healthcare Team Outcomes

All healthcare workers should regularly wash hands as this is the most cost effective way to prevent transmission of infections. While compliance with hand washing is high among healthcare workers, the same is not true of the public. Thus, the nurse, pharmacist and physician should educate the patient on the benefits of hand washing at every clinic visit. [12][13][14]

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      Contributed by Ariana Passaretti, RN and Tammy J. Toney-Butler, AS, RN, CEN, TCRN, CPEN


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