A nurse is assessing a 28-year-old patient with systemic lupus erythematosus who presents with chest pain. Which assessment finding would be most characteristic of acute pericarditis in this patient?

A pericardial friction rub is the most characteristic sign of pericarditis, heard best at the left sternal border during expiration with the patient leaning forward. Other options represent signs of cardiac tamponade (muffled sounds), pleuritis (pain pattern), or right heart failure (edema).

Core Nursing Explanation Key Concept Analysis: This question assesses the ability to differentiate the classic physical assessment finding of acute pericarditis from other cardiac complications, particularly in a patient with systemic lupus erythematosus (SLE). SLE is an autoimmune disease that can cause inflammation of the pericardium (the sac surrounding the heart), leading to pericarditis. The hallmark sign is the pericardial friction rub, a scratchy, grating sound produced by the inflamed pericardial layers rubbing against each other.

Answer Rationale: Key Point! The pericardial friction rub is pathognomonic for pericarditis. It is best heard at the left lower sternal border with the diaphragm of the stethoscope. The sound is often transient and is accentuated by maneuvers that bring the pericardial layers closer together: having the patient lean forward and listening during expiration. This is the most direct and characteristic assessment finding for this condition.

Distractor Analysis:
Watch out for confusion! Option ② describes Beck's triad (muffled heart sounds, jugular venous distention, hypotension), which is characteristic of cardiac tamponade, a life-threatening complication of pericarditis where fluid accumulation compresses the heart. It is not the most characteristic finding of uncomplicated pericarditis.
Option ③ describes pain that worsens with inspiration, which is more typical of pleuritic chest pain (inflammation of the pleura) or pericarditis pain that can also be pleuritic. However, pericarditis pain typically worsens when lying flat and improves when sitting up and leaning forward, which is the opposite of what this option states. This makes it incorrect.
Option ④ describes signs of right-sided heart failure (edema, hepatomegaly, ascites) due to systemic venous congestion. While chronic constrictive pericarditis can lead to right heart failure signs, these are not the characteristic findings of acute pericarditis.

Related Concepts: In patients with autoimmune diseases like SLE, nurses must be vigilant for signs of serositis (inflammation of serous membranes), which includes pericarditis, pleuritis, and peritonitis. Assessment of chest pain requires a detailed history of quality, location, radiation, and aggravating/alleviating factors to differentiate between cardiac, pulmonary, and musculoskeletal origins.

Nursing Clinical Practice Guide Clinical Scenario: You are a nurse on a medical-surgical unit. Your patient, a 28-year-old female with a known history of SLE, calls you to her room reporting sudden onset of sharp, central chest pain. She states it feels worse when she lies down to sleep.

Nursing Intervention Strategy: 1. Immediate Assessment: Perform a focused cardiac and respiratory assessment. Auscultate the heart meticulously at the left sternal border, asking the patient to sit up, lean forward, and hold her breath after expiration. Listen for the characteristic scratchy sound of a friction rub. 2. Pain Management & Positioning: Assist the patient into a position of comfort, which for pericarditis is often sitting up and leaning forward. Administer prescribed analgesics (often NSAIDs like ibuprofen) and document the pain's response to medication and positioning. 3. Monitoring for Complications: Continuously monitor for signs of cardiac tamponade, a medical emergency. Assess vital signs frequently for hypotension, tachycardia, and pulsus paradoxus (an abnormally large drop in systolic BP during inspiration). Note any development of muffled heart sounds or increased jugular venous distension (JVD). 4. Collaboration & Education: Notify the provider of your findings. Educate the patient on the nature of pericarditis in relation to her SLE, the importance of medication adherence, and to report any worsening symptoms like difficulty breathing, lightheadedness, or increased swelling immediately.

Patient Safety and Precautions: Never dismiss chest pain in a patient with SLE. While musculoskeletal pain is common, ruling out cardiac and pulmonary causes is paramount. Be aware that high-dose corticosteroids, often used to treat SLE flares, can mask symptoms of infection and inflammation.
Nursing Procedure & Medication Flow When administering NSAIDs for pericarditis:

• Assess for contraindications like peptic ulcer disease or renal impairment.
• Administer with food or milk to minimize GI upset.
• Monitor for therapeutic effect (reduction in pain and fever) and for side effects (GI bleeding, elevated renal function tests).

A Word from Your Senior Nurse "Listening for a pericardial friction rub is a skill that takes practice—it can come and go and is easy to miss if you're not specifically looking for it. In a young patient with SLE and chest pain, your focused assessment is the first critical step in differentiating between a flare of inflammation and something more sinister. Always connect the pathophysiology (inflamed sac rubbing) to the clinical sign (the rub) to the patient's comfort (sitting up). This holistic thinking is what makes an excellent nurse."