16.4: Endocarditis IV: Nursing Management

Infective endocarditis (IE) is a chronic infection of the heart's endocardium, primarily affecting the heart valves. A detailed nursing assessment for a patient with IE involves collecting subjective and objective data to ensure an accurate diagnosis and timely intervention.

Subjective Data

The nurse gathers information about the patient's symptoms and complaints during the subjective assessment. Patients with infective endocarditis often report non-specific symptoms that can mimic other conditions. Key subjective symptoms may include:

• Dyspnea: Shortness of breath occurs when the heart is unable to pump blood efficiently, leading to pulmonary congestion.
• Fatigue: As the infection persists, the body's inflammatory response can cause extreme tiredness and lethargy.
• Chest pain: Though less common, chest pain may result from complications such as valve damage or embolic events.

Objective Data

Objective assessment focuses on measurable clinical signs that reflect the severity of the infection and its systemic impact. Essential findings in infective endocarditis include:

• Elevated temperature (fever): A hallmark of infection, fever indicates the ongoing inflammatory process.
• Swollen legs: This may indicate heart failure caused by impaired cardiac function, leading to fluid accumulation in the lower extremities (peripheral edema).
• Leukocytosis: An elevated white blood cell (WBC) count is common, particularly in acute cases. However, in subacute cases, WBC counts may remain within normal limits.
• Low oxygen saturation: Hypoxia may occur due to heart failure or septic emboli that compromise oxygenation.
• Petechiae: Small red or purple spots may appear on the skin or mucous membranes due to microvascular emboli.
• Splinter hemorrhages: Small, dark streaks under the nails resulting from embolic events.
• Osler's nodes: Painful, red, raised lesions found on the pads of the fingers or toes, caused by immune complex deposition.
• Janeway lesions: Non-tender, erythematous macular lesions on the palms and soles, representing septic emboli.

Primary Nursing Goals The primary nursing goals in managing infective endocarditis focus on restoring and maintaining cardiac function, improving the patient's quality of life, and ensuring long-term disease management. Specific goals include:

• Maintaining normal cardiac function: Prevent complications such as heart failure or valve dysfunction through careful monitoring and appropriate treatment.
• Enabling daily activities without fatigue: Support the patient's ability to perform activities of daily living (ADLs) with minimal exertion and fatigue.
• Understanding the treatment plan: Educate the patient on medication adherence, lifestyle modifications, and preventive measures, such as good oral hygiene and infection control.

Nursing Interventions To achieve these goals, a range of nursing interventions is essential, addressing both acute care in the hospital and long-term management after discharge:

• Temperature Management:
  • Administer antipyretics (e.g., acetaminophen) to reduce fever, common in infective endocarditis.
  • Apply cloth compresses and tepid water baths to provide additional comfort and help lower body temperature.
• Cardiac Monitoring:
  • Auscultate heart sounds regularly to detect new or worsening murmurs, which may indicate valve damage or disease progression. Continuous monitoring is critical for identifying early signs of heart failure or embolic events.
• Patient Education:
  • Infection control practices: Educate patients on proper hand hygiene to reduce the risk of recurrent infections. Emphasize oral care, especially brushing after waking and before bed, as poor dental hygiene can be a source of bacteremia leading to endocarditis.
  • Physical activity: Encourage moderate exercise to improve circulation and maintain muscle tone. Activities should be balanced with rest, including short breaks to avoid fatigue.

Post-Discharge Care Patients with infective endocarditis may require long-term care following discharge, especially if prolonged antimicrobial therapy is necessary.

• Antimicrobial Therapy:
  • Peripherally inserted central catheter (PICC): Post-discharge, patients may continue long-term IV antimicrobial therapy, often delivered via a PICC line. The nurse must educate the patient and family on proper catheter care, including infection prevention techniques.
• Home Health Monitoring:
  • Home health nurse: A home health nurse may visit the patient to monitor the PICC line and assess for signs of infection, such as redness, swelling, or discharge at the insertion site.
  • Education on complications and adherence: The home health nurse educates the patient and family about potential complications, such as embolic events or recurrent infections, and ensures adherence to prescribed treatment regimens.