Hand Hygiene

Basics & Importance - Germ Warfare 101

• Core Principle: Hand hygiene (HH) is the most effective measure to prevent Hospital Acquired Infections (HAIs).
• Mechanism: Interrupts pathogen transmission by contact.
• Targets: Bacteria (MRSA, VRE), viruses (Norovirus, Influenza), fungi.
• Impact: ↓ HAI rates, ↓ antimicrobial resistance (AMR), ↑ patient safety.

⭐ WHO's "My 5 Moments for Hand Hygiene": 1. Before patient contact. 2. Before aseptic task. 3. After body fluid exposure risk. 4. After patient contact. 5. After contact with patient surroundings.

WHO's 5 Moments - Hygiene Hotspots

• 1. Before Patient Contact:
  • To protect the patient against harmful germs carried on your hands.
• 2. Before Clean/Aseptic Procedure:
  • To protect the patient against harmful germs, including the patient’s own, from entering their body.
• 3. After Body Fluid Exposure Risk:
  • To protect yourself and the healthcare surroundings from harmful patient germs.
• 4. After Patient Contact:
  • To protect yourself and the healthcare surroundings from harmful patient germs.
• 5. After Contact with Patient Surroundings:
  • To protect yourself and the healthcare surroundings from harmful patient germs.

⭐ Alcohol-based handrubs (ABHR) are the preferred method for routine hand hygiene when hands are not visibly soiled; effective duration is 20-30 seconds.

Techniques & Agents - Scrub & Rub Rituals

Core Principle: Adherence to WHO 6-steps for recommended duration is crucial.

1. Alcohol-Based Hand Rub (ABHR):

• Agent: Alcohol (60-80% Ethanol, Isopropanol); often with emollients.
• Duration: 20-30 seconds (until dry).
• Technique: Apply to dry hands, cover all surfaces using WHO 6 steps.
• Use: Preferred for routine decontamination if hands not visibly soiled.
• ⚠️ Ineffective against: C. difficile spores, Norovirus, protozoan oocysts; not for soiled hands.

2. Hand Wash (Soap & Water):

• Agent: Plain or antimicrobial soap.
• Duration: 40-60 seconds.
• Technique: Wet hands, apply soap, vigorous friction covering all surfaces (WHO 6 steps), rinse, dry thoroughly with clean towel.
• Use: Visibly soiled hands, after toilet use, before eating, suspected/confirmed C. difficile or Norovirus.

3. Surgical Hand Antisepsis:

• Agents: Chlorhexidine (CHG) 2-4%, Povidone-Iodine (PVP-I) 7.5-10%, or specific alcohol-based surgical rubs.
• Duration: 2-6 minutes for traditional scrub; ABHR application time as per manufacturer.
• Technique: From fingertips to elbows; clean under nails.

⭐ Alcohol-based hand rubs (ABHR) are ineffective against Clostridium difficile spores; meticulous hand washing with soap and water is essential in such cases.

Special Cases & Compliance - Beyond Routine & Sticking Power

• Clostridioides difficile (C. diff) & Other Spore-Formers (e.g., Anthrax):
  • Alcohol-based hand rubs (ABHR) ineffective against spores.
  • Mandatory: Soap & water handwash.
• Surgical Hand Antisepsis:
  • Procedure: Pre-wash, then antiseptic agent (e.g., Chlorhexidine, Povidone-Iodine).
  • Duration: 2-6 minutes.
  • Area: Hands and forearms up to elbows.
• Improving Compliance:
  • Key: WHO "My 5 Moments": 1. Before patient. 2. Before aseptic task. 3. After body fluid risk. 4. After patient. 5. After patient surroundings.
  • Strategies: Education, visual reminders, audits & feedback, institutional support.
  • "Bare below the elbows" policy.

  ⭐ In suspected or proven C. difficile infection, hand hygiene with soap and water is superior to ABHR due to alcohol's inefficacy against spores.

High‑Yield Points - ⚡ Biggest Takeaways

• Hand hygiene: Single most effective measure against HAIs.
• WHO's 5 Moments: Critical for interrupting pathogen transmission in patient care.
• Alcohol-based hand rubs (ABHRs): Preferred if hands not visibly soiled; rub for 20-30 seconds.
• Soap & water handwash: Essential for visibly soiled hands or with C. difficile; wash for 40-60 seconds.
• ABHRs: Must contain 60-80% alcohol for optimal germicidal activity.
• Non-compliance with hand hygiene is a major factor in HAI outbreaks.