2.2 Safe and Quality Patient Care & Infection Control

Patient safety is a fundamental principle of nursing care, governed by both ethical standards and legislative mandates in the Philippines, most notably the Philippine Nursing Act of 2002 (Republic Act No. 9173). Under this law, the nurse is legally and ethically bound to provide safe, quality, and professional care as a Key Area of Responsibility. A cornerstone of safe and quality patient care is infection control—specifically, the prevention of transmission of pathogenic microorganisms within the healthcare facility, thereby minimizing patient morbidity, hospital stay duration, and healthcare-associated financial burdens.

1. The Chain of Infection: Links and Interventions

The transmission of infection in any clinical environment requires an unbroken chain of six essential links. Clinical nursing practice focuses heavily on implementing specific interventions to break this chain at every possible point.

[!IMPORTANT] Hand hygiene remains the single most effective clinical intervention to break the chain of infection. Hand hygiene breaks the chain primarily at the Mode of Transmission link.

Hand Hygiene Protocols (WHO 5 Moments)

The World Health Organization (WHO) defines the "My 5 Moments for Hand Hygiene" approach to minimize cross-contamination in clinical settings:

1. Before touching a patient: Prior to entering the patient zone and shaking hands, helping them move, or performing physical assessment.
2. Before a clean/aseptic procedure: Prior to inserting peripheral IV lines, performing wound dressing changes, or administering medications via injection.
3. After body fluid exposure risk: Immediately after contact with blood, urine, secretions, wound drainage, or after removing gloves used for these procedures.
4. After touching a patient: Upon leaving the patient's bedside after completing care (e.g., taking vital signs, bathing, or repositioning).
5. After touching patient surroundings: After touching furniture, bedsheets, infusion pumps, or bedside tables, even if the patient was not directly touched.

Technique and Selection:

• Soap and Water: Required when hands are visibly soiled, contaminated with blood or body fluids, or when caring for patients with spore-forming organisms (e.g., Clostridioides difficile), as alcohol rubs do not destroy spores. The wash must last at least 20 seconds, using friction, ensuring all surfaces (interdigital spaces, fingernails, thumbs, backs of hands, and wrists) are scrubbed. Dry hands with a clean paper towel and use the paper towel to turn off the faucet.
• Alcohol-Based Hand Rub: Acceptable for routine decontamination if hands are not visibly soiled. Apply product, rub vigorously covering all surfaces, and continue rubbing until completely dry (usually 15-20 seconds).

2. Aseptic Techniques: Medical vs. Surgical Asepsis

Nurses must differentiate between clean and sterile environments to prevent contamination.

• Medical Asepsis (Clean Technique): Designed to reduce the number, growth, and spread of pathogens. Practices include handwashing, using clean non-sterile gloves, maintaining clean patient environments, and cleaning equipment between uses. The guiding rule is "clean to clean, dirty to dirty."
• Surgical Asepsis (Sterile Technique): Aims to completely eliminate all microorganisms, including bacterial spores, from an object or area. It is mandatory for invasive procedures such as surgical interventions, indwelling urinary catheter insertions, and central venous catheter dressing changes.

Critical Rules of Sterile Fields

Establishing and maintaining a sterile field requires strict adherence to the following physical boundaries and behavioral rules:

1. Sterile to Sterile: Only sterile objects may touch other sterile objects. Touching a sterile object to a clean or contaminated object immediately renders the sterile object contaminated.
2. The 1-Inch Border: The outermost 1-inch (2.5 cm) margin of a sterile drape or wrapper is considered non-sterile. All sterile items must be placed inside this boundary.
3. Line of Vision: Never turn your back on a sterile field or let it fall below waist level. Any object out of the nurse's line of vision or below the waist is automatically deemed contaminated.
4. Airborne Contamination: Avoid coughing, sneezing, laughing, or excessive talking over a sterile field. Do not reach across a sterile field. Minimize air currents by keeping doors closed and limiting movement around the field.
5. Moisture and Capillary Action: If a sterile field becomes wet, microorganisms are drawn from the non-sterile surface underneath through capillary action (wicking), contaminating the field.
6. Liquids and "Lipping": When pouring sterile solutions, hold the bottle with the label facing the palm of your hand (to prevent dripping onto the label and obscuring instructions). Before pouring onto the sterile field, pour a small amount (1-2 mL) into a waste container to wash away contaminants on the bottle lip—a process called "lipping." Hold the bottle 4-6 inches (10-15 cm) above the sterile cup and pour slowly to avoid splashing.
7. Opening Sterile Packs: Place the pack on a clean surface. Open the first flap away from your body. Next, open the side flaps. Finally, pull the last flap toward your body. This sequence prevents the nurse's unsterile arm from crossing over the sterile contents.

3. Healthcare-Associated Infections (HAIs) and Prevention Bundles

Healthcare-Associated Infections (HAIs) are infections acquired in a healthcare facility that were not present or incubating at the time of admission. To combat HAIs, the Institute for Healthcare Improvement (IHI) developed clinical care bundles—groups of evidence-based interventions that, when implemented together, result in significantly better outcomes than when implemented individually.

A. Catheter-Associated Urinary Tract Infection (CAUTI) Prevention Bundle

• Avoid Unnecessary Catheterization: Insert indwelling urinary catheters only when clinically indicated (e.g., acute urinary retention, critical output monitoring, perioperative use for specific surgeries). Do not use for convenience or incontinence management.
• Aseptic Insertion: Use strict sterile technique, sterile gloves, and sterile equipment for insertion.
• Maintain Closed Drainage System: Keep the connection between the catheter and the drainage bag unbroken.
• Maintain Unobstructed Flow: Keep the drainage bag below the level of the bladder at all times to prevent backflow of urine. Ensure there are no kinks or dependent loops in the tubing. Empty the bag regularly using a clean, patient-specific container.
• Daily Review and Prompt Removal: Assess the patient daily for catheter necessity. Remove the catheter as soon as it is no longer required, as the risk of bacteremia increases by 3-10% for each day the catheter remains in place.

B. Central Line-Associated Bloodstream Infection (CLABSI) Prevention Bundle

• Hand Hygiene: Perform strict hand hygiene before touching the central venous catheter (CVC) site or components.
• Maximal Sterile Barrier Precautions: The inserter must wear a mask, cap, sterile gown, and sterile gloves. The patient must be covered with a full-body sterile drape.
• Chlorhexidine Skin Antisepsis: Cleanse the insertion site with >0.5% chlorhexidine gluconate with alcohol, using a back-and-forth friction rub for at least 30 seconds. Allow to air dry completely.
• Optimal Site Selection: Avoid the femoral vein in adult patients due to high colonization rates; the subclavian or internal jugular veins are preferred.
• Daily Review and Prompt Removal: Perform daily audits on the necessity of the central line and remove it immediately when it is no longer required.

C. Ventilator-Associated Pneumonia (VAP) Prevention Bundle

• Elevation of the Head of the Bed (HOB): Maintain HOB elevation between 30 and 45 degrees to prevent micro-aspiration of gastric secretions.
• Daily Sedative Interruption and Extubation Assessment: Perform daily "sedation vacations" to assess the patient's neurological status and evaluate readiness to wean and extubate.
• Peptic Ulcer Disease (PUD) Prophylaxis: Administer prescribed H2 blockers or proton pump inhibitors.
• Deep Vein Thrombosis (DVT) Prophylaxis: Apply sequential compression devices and administer anticoagulants as ordered.
• Daily Oral Care: Perform oral hygiene using chlorhexidine gluconate (typically 0.12% solution) every 2-12 hours to reduce oral bacterial load.

D. Surgical Site Infection (SSI) Prevention Bundle

• Preoperative Antibiotic Timing: Administer prophylactic antibiotics within 1 hour before the surgical incision (or 2 hours for vancomycin/fluoroquinolones) to ensure adequate tissue levels.
• Appropriate Hair Removal: Do not use razors, as they cause micro-abrasions that harbor bacteria. Use electric clippers immediately before surgery if hair removal is necessary.
• Perioperative Glycemic Control: Maintain blood glucose levels below 200 mg/dL in the perioperative period, as hyperglycemia impairs neutrophil function.
• Perioperative Normothermia: Maintain the patient's core body temperature above 36°C (96.8°F) to prevent vasoconstriction and subsequent tissue hypoxia.

4. Personal Protective Equipment (PPE) Sequences

The proper sequences for donning (putting on) and doffing (taking off) PPE are critical to prevent cross-contamination and self-contamination.

Donning Sequence (Entering the Room)

1. Gown: Fully cover the torso from neck to knees and arms to end of wrists. Fasten in the back at the neck and waist.
2. Mask or Respirator (N95): Secure ties or elastic bands at middle of head and neck. Fit flexible band to nose bridge. Fit snug to face and below chin. Fit-check respirator.
3. Goggles or Face Shield: Place over face and eyes and adjust to fit.
4. Gloves: Don gloves and extend them to cover the wrist cuffs of the protective gown.

Doffing Sequence (Leaving the Room)

Nurses must remove PPE in a manner that protects their skin and clothing from contamination.

Standard Method:

1. Gloves: The outside of gloves is contaminated. Grasp the palm of the other gloved hand and peel off. Hold the removed glove in the remaining gloved hand. Slide a finger of the ungloved hand under the remaining glove at the wrist and peel it off over the first glove. Discard in waste container.
   • Rationale: Prevents contaminating the hands while removing the dirtiest item first.
2. Goggles or Face Shield: The outside of goggles/face shield is contaminated. Remove by handling the head band or ear pieces from the back. Place in designated receptacle.
   • Rationale: Avoids touching the front of the shield, which is contaminated with droplets.
3. Gown: The front and sleeves are contaminated. Unfasten ties at neck and waist. Pull the gown away from neck and shoulders, touching only the inside of the gown. Turn the gown inside out and roll into a bundle. Discard.
   • Rationale: Prevents transfer of pathogens to the nurse's uniform.
4. Mask or Respirator: The front of the mask is contaminated. Remove by pulling the bottom strap over the head first, then the top strap. Do not touch the front of the mask. Discard.
   • Rationale: Removing the respirator last (outside the patient room for airborne precautions) protects the respiratory tract from suspended particles during the doffing process.
5. Hand Hygiene: Perform hand hygiene immediately after doffing all PPE.

5. Fall Prevention and Risk Assessment Scales

Falls are a primary indicator of nursing care quality and patient safety. Nurses must perform regular fall risk assessments using standardized tools.

Morse Fall Scale

This scale assesses six clinical variables to determine fall risk:

1. History of falling: Immediate or within the last 3 months (No = 0, Yes = 25).
2. Secondary diagnosis: More than one active medical diagnosis (No = 0, Yes = 15).
3. Ambulatory aid: Bed rest/nurse assistance (0), Crutches/cane/walker (15), Furniture-clutching (30).
4. IV/Saline Lock: Intravenous therapy or lock in place (No = 0, Yes = 20).
5. Gait/Transferring: Normal/bed rest/immobile (0), Weak/stooped (10), Impaired/difficulty (20).
6. Mental status: Oriented to own ability (0), Overestimates or forgets limitations (15).

• Scoring Interpretation: 0-24: Low Risk; 25-50: Medium Risk; >50: High Risk.

Hendrich II Fall Risk Model

This model focuses on physiological factors and provides a rapid assessment:

• Confusion/Disorientation: 4 points
• Depression: 2 points
• Altered Elimination: 1 point
• Dizziness/Vertigo: 1 point
• Male Gender: 1 point
• Anticonvulsants: 2 points
• Benzodiazepines: 1 point
• Get-Up-and-Go Test: 0 to 4 points based on rising ability.
• Scoring Interpretation: A score of 5 or greater indicates high risk.

Fall Prevention Interventions

• Universal Precautions (All Patients): Keep bed in lowest position with wheels locked. Clear path to the bathroom. Keep call bell and personal items within reach. Ensure adequate night lighting.
• High-Risk Interventions: Place a yellow "Fall Risk" wristband on the patient. Apply non-skid socks. Place the patient in a room close to the nurse's station. Activate bed/chair alarms. Conduct hourly rounding. Set up physical therapy/mobility consults.

6. The 10 Rights of Medication Administration

Medication safety requires strict adherence to double-checking protocols to eliminate errors.

1. Right Patient: Verify identity using at least two independent identifiers (e.g., patient's full name and date of birth). Compare the patient's ID band with the Medication Administration Record (MAR). Ask the patient to state their name and DOB. Never use the patient's room number or bed number as an identifier.
2. Right Medication: Check the prescription against the MAR. Read the label three times: (1) when removing the medication from the dispensing system, (2) when preparing the medication, and (3) at the bedside prior to administration. Check the expiration date.
3. Right Dose: Perform and verify dosage calculations. For high-alert medications (e.g., insulin, heparin, chemotherapy, potassium chloride), require a double-check and sign-off by a second registered nurse.
4. Right Route: Ensure the medication is administered via the specified route (e.g., oral, intravenous, intramuscular, subcutaneous). Verify if tablets can be crushed; never crush enteric-coated (EC) or extended-release (ER/XR) medications.
5. Right Time: Administer medications within the facility's approved timeframe (typically within 30 to 60 minutes before or after the scheduled time). Consider clinical factors, such as giving rapid-acting insulin only when the food tray is at the bedside.
6. Right Documentation: Document administration immediately after the patient takes the medication. Never document in advance. Note the drug name, dose, route, time, site of injection, and any withheld medications with the appropriate rationale.
7. Right Patient Education: Inform the patient and family about the medication's name, purpose, action, and potential side effects. Empower the patient to ask questions.
8. Right to Refuse: Patients have the autonomy to refuse medication. If they refuse: (1) explore their reasons, (2) explain the consequences of refusal, (3) document the refusal and the education provided, and (4) notify the prescribing healthcare provider.
9. Right Assessment: Obtain necessary pre-administration parameters. For example, check apical pulse for 60 seconds before administering digoxin (hold if <60 bpm), check blood pressure before antihypertensives, and check blood glucose before insulin.
10. Right Evaluation/Response: Follow up with the patient to assess the therapeutic effect and monitor for adverse reactions. Document findings (e.g., pain score reassessed 30 minutes after IV morphine administration).