A 65-year-old retired teacher presents to the emergency department with a 3-week history of persistent cough, night sweats, and unintentional weight loss of 15 pounds over the past month. Which assessment finding would be most indicative of active tuberculosis requiring immediate intervention?
1Positive tuberculin skin test (TST) with 12 mm induration
2Hemoptysis with blood-streaked sputum production✓ 정답
3Low-grade fever of 100.2°F (37.9°C) in the evening
4Fatigue and decreased appetite for the past 2 weeks
해설
Hemoptysis suggests active tuberculosis with tissue damage, requiring immediate intervention due to high infectivity and respiratory risk. Other findings like positive TST or low-grade fever are less urgent.
Core Nursing ExplanationKey Concept Analysis: This question assesses the ability to differentiate between latent tuberculosis infection (LTBI) and active tuberculosis (TB) disease, and to identify the clinical sign that indicates an urgent, potentially life-threatening complication requiring immediate intervention. The patient's symptoms (persistent cough, night sweats, unintentional weight loss) are classic for TB. The core concept is that while many findings are consistent with TB, hemoptysis (coughing up blood) signals active, cavitary disease that can lead to airway obstruction, massive hemorrhage, or indicates high infectivity.
Answer Rationale: Key Point!Hemoptysis in a patient with TB symptoms is a red flag. It often results from erosion of a blood vessel in a necrotic, cavitary lung lesion, indicating advanced, active disease. This requires immediate intervention to assess airway patency, control bleeding, prevent aspiration, and initiate airborne isolation to halt transmission. It is the most direct indicator of tissue destruction and high infectivity among the options.
Distractor Analysis:
Watch out for confusion! A Positive tuberculin skin test (TST) (Option 1) indicates exposure to the TB bacterium and a cellular immune response, but it cannot distinguish between latent infection and active disease. Many people with a positive TST have LTBI and are not contagious. It is a screening tool, not an indicator for immediate intervention.
Option 3 (Low-grade fever) and Option 4 (Fatigue/decreased appetite) are constitutional symptoms common in both active TB and many other illnesses. While they support the diagnosis, they are not specific signs of an acute, life-threatening complication requiring immediate action.
Related Concepts: The priority in TB management is public health and patient safety: Airborne Precautions (negative pressure room, N95 respirator) are initiated upon suspicion of active pulmonary TB. Diagnosis is confirmed by sputum acid-fast bacilli (AFB) smear and culture. Treatment for active TB involves a multi-drug regimen (e.g., RIPE: Rifampin, Isoniazid, Pyrazinamide, Ethambutol) to prevent drug resistance.
Nursing Clinical Practice GuideClinical Scenario: You are the triage nurse in the ED. Mr. Johnson, 65, is coughing persistently into a tissue. While asking about his symptoms, you notice bright red blood streaking the sputum on the tissue.Nursing Intervention Strategy:
1Immediate Action & SafetyPlace the patient in a private room with airborne precautions immediately. Don a fit-tested N95 respirator before further assessment. Provide the patient with a surgical mask to wear. Assess ABCs (Airway, Breathing, Circulation)—hemoptysis can compromise the airway.
2AssessmentMonitor vital signs, oxygen saturation, and the amount/character of hemoptysis. Ask about the duration and volume ("teaspoon, tablespoon, cup?"). Auscultate lung sounds.
3Collaboration & DiagnosticsNotify the physician/provider STAT. Anticipate orders for chest X-ray, and most critically, the collection of three early-morning sputum specimens for AFB smear and culture to confirm diagnosis and infectivity.
4Patient Education & SupportEducate on cough etiquette (cover mouth with tissue), the importance of completing the full course of TB treatment (6-9 months), and the reason for isolation.
Nursing Procedure & Medication FlowSputum Collection: Instruct the patient to take a deep breath and cough deeply from the chest to produce a specimen, not saliva. Collect in a sterile, leak-proof container.Medication Administration: First-line TB drugs have significant side effects. Key monitoring includes: Isoniazid (INH) (hepatotoxicity, peripheral neuropathy—give Pyridoxine/B6 to prevent), Rifampin (body fluids turn orange, hepatotoxicity, reduces efficacy of many other drugs), Ethambutol (optic neuritis—monitor color vision and red-green discrimination), Pyrazinamide (PZA) (hyperuricemia, hepatotoxicity).
A Word from Your Senior Nurse
"In the hustle of the ED, a patient coughing might seem routine. But when you hear 'night sweats' and 'weight loss,' your TB radar should go up. Seeing blood in the sputum is your cue to act fast—not just for the patient's sake, but to protect everyone in the waiting room. Remember, initiating airborne isolation is a nursing responsibility. Your quick thinking literally stops the spread of disease. On the NCLEX, they love to test this distinction between 'suspicion' (symptoms) and 'action' (isolation for cough/hemoptysis). Think: 'Contagious? Isolate!'"
Hemoptysis — Coughing up blood or blood-streaked sputum from the respiratory tract. In TB, it indicates cavitary lung disease and erosion of blood vessels, signaling active, infectious disease.
Airborne Precautions — Infection control measures for diseases transmitted via airborne droplet nuclei (e.g., TB, measles, chickenpox). Requires a negative pressure room and use of an N95 respirator or higher-level protection by healthcare personnel.
Tuberculin Skin Test — A screening test for TB infection where purified protein derivative (PPD) is injected intradermally. Induration (not redness) is measured after 48-72 hours. Positive indicates immune response to TB bacteria but does not differentiate latent from active disease.
Acid-Fast Bacilli (AFB) Smear — A rapid diagnostic test performed on sputum to detect the presence of Mycobacterium tuberculosis. A positive smear is highly indicative of active, infectious pulmonary tuberculosis.
Multi-Drug Resistant TB (MDR-TB) — Tuberculosis resistant to at least isoniazid and rifampin, the two most potent first-line TB drugs. Caused by incomplete or incorrect treatment, requiring longer, more complex, and toxic second-line drug regimens.