A nurse is caring for a patient with active pulmonary tuberculosis who has been on anti-tuberculosis therapy for 2 weeks. Which nursing action is the MOST important priority to ensure safety in the healthcare environment?

The highest priority is preventing airborne transmission by ensuring the patient wears a surgical mask during transport outside the negative pressure room. Other options are important but do not directly address immediate safety from transmission.

Core Nursing Explanation Key Concept Analysis: This question tests the application of Transmission-Based Precautions, specifically for Airborne diseases. The core theme is identifying the Key Point! immediate safety priority in infection control. The patient has Active pulmonary tuberculosis (TB), which is transmitted via airborne droplet nuclei. Even after starting therapy, a patient is considered infectious until sputum cultures convert to negative, which typically takes 2-4 weeks. Therefore, the most critical action is to prevent the spread of the pathogen to other patients, visitors, and healthcare workers.

Answer Rationale: The correct answer is ensuring the patient wears a surgical mask during transport. Here’s the clinical and safety rationale:
Key Point! For airborne precautions, the patient must be in a Negative pressure isolation room. When leaving this controlled environment (e.g., for diagnostic tests), the patient becomes a mobile source of infection. A Surgical mask on the patient acts as source control, trapping infectious droplets expelled when the patient coughs, talks, or breathes, thereby protecting others in common areas. This action directly addresses the immediate public health and safety risk of transmission.

Distractor Analysis:
① Monitor sputum culture results daily: While monitoring treatment response is important, sputum cultures are not processed daily; they take weeks to grow. This is not an immediate safety action for the healthcare environment.
③ Administer medications at the same time each day: This is crucial for Medication adherence and maintaining therapeutic levels, which is a long-term treatment priority. However, it does not address the acute infection control risk in the environment.
④ Educate about completing the full course: Patient education on Directly Observed Therapy (DOT) and treatment completion is vital to prevent drug resistance and relapse. This is a key nursing responsibility but is a secondary priority to containing an active, transmissible infection within the facility.

Related Concepts: This integrates knowledge of infection control (Standard and Transmission-Based Precautions), the pathophysiology of TB transmission, and the nursing process where Key Point! safety (preventing harm to others) always takes precedence in priority-setting questions.

Concept Summary

Concept	Key Points
Airborne Precautions	Required for measles, varicella, disseminated zoster, and tuberculosis. Use N95 respirator for healthcare workers, negative pressure room, and surgical mask on patient during transport.
TB Infectious Period	A patient is considered infectious until they have been on effective therapy for 2-3 weeks and have clinical improvement with negative sputum smears.
Source Control	Having the infectious person wear a mask is a primary method to contain respiratory secretions and protect others.
Nursing Priorities	Safety (preventing transmission) > Treatment (administering meds) > Education > Monitoring results.

Side-by-Side Comparison!

Precaution Type	Diseases/Pathogens	Key PPE & Measures	Room Type
Airborne	TB, Measles, Chickenpox	N95 respirator (HCW), Surgical mask (patient for transport)	Negative pressure (AIIR)
Droplet	Influenza, Pertussis, Meningitis	Surgical mask (HCW), Mask on patient if tolerated	Private room or cohort
Contact	MRSA, VRE, C. diff, RSV	Gown & Gloves	Private room or cohort

Anatomy, Physiology & Pharmacology Points

• Pathophysiology: Mycobacterium tuberculosis is inhaled into the alveoli. It is carried by droplet nuclei (tiny particles

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse on a medical unit. Mr. Jones, 58, was admitted 2 weeks ago with a confirmed diagnosis of active pulmonary TB. He is on a four-drug regimen. He needs to be transported to Radiology for a follow-up chest CT scan.

Nursing Intervention Strategy:

1. Assessment: Verify the physician's order for transport. Assess the patient's understanding of why he needs to wear a mask. Assess for any respiratory distress that might be worsened by the mask.
2. Planning: Plan the transport route to minimize time in common areas. Notify the receiving department (Radiology) in advance so they can prepare an isolation area or be ready to receive an infectious patient.
3. Implementation:
   • Don your own appropriate PPE (at minimum, an N95 respirator) before entering the room.
   • Provide a surgical mask to the patient and instruct him to wear it securely over his nose and mouth. Educate: "Mr. Jones, this mask helps keep germs from spreading to others as we walk to your test."
   • Use a dedicated transport wheelchair if possible. Cover any open wounds the patient may have.
   • Accompany the patient directly to Radiology, avoiding common waiting areas.
4. Evaluation: Ensure the patient kept the mask on during transport. After returning the patient to his negative pressure room, perform hand hygiene. Document the transport, precautions taken, and patient tolerance.

Patient Safety and Precautions:

• Contraindication: If the patient is in severe respiratory distress and wearing a mask worsens hypoxia, alternative arrangements must be made (e.g., portable imaging in the room if absolutely necessary).
• Key Monitoring: Monitor the patient for anxiety or discomfort related to the mask and isolation.

Nursing Procedure & Medication Flow Medication Administration for TB:

• Drugs like Rifampin turn body fluids (urine, sweat, tears) orange-red. This is a normal side effect. Educate the patient to avoid contact lenses and warn about stained underwear.
• Isoniazid (INH) can cause peripheral neuropathy. Pyridoxine (Vitamin B6) is often co-administered as prophylaxis.
• Ethambutol can cause optic neuritis (red-green color blindness). Baseline and periodic visual acuity tests are needed.
• Key Point! Administer all drugs together, usually once daily, to promote adherence and synergistic bactericidal effect.

A Word from Your Senior Nurse "In the real world, infection control is everyone's responsibility. It can feel awkward to ask a sick patient to wear a mask, but frame it as an act of protection for their family, other vulnerable patients, and even for us, the healthcare team. Your vigilance in following these precautions literally saves lives by preventing outbreaks. When you study, don't just memorize 'mask for transport'—understand that it's about breaking the chain of infection. That critical thinking will make you a safe and trusted nurse from day one."