Pericardial disease Flashcards
(83 cards)
Pericardial Disease / Will Kill)
A patient complaining of chest pain improved by leaning forward has a friction rub on auscultation. Which acute complication can lead to death if missed?
A. Referred shoulder pain
B. Cardiac tamponade
C. Benign effusion
D. Pericardial calcification
Correct Answer: B. Cardiac tamponade
Rationale:
In pericardial disease, particularly pericarditis, an acute complication that can be life-threatening if missed is cardiac tamponade. This occurs when fluid rapidly accumulates in the pericardial space, compressing the heart and impairing its ability to fill and pump effectively. The other options, such as referred shoulder pain, benign effusion, or pericardial calcification, are not immediate threats to life in the acute setting.
In acute pericarditis, which EKG finding is typically seen across multiple leads?
A. ST depression only
B. Diffuse ST elevation with PR depression
C. Delta waves
D. Peaked T waves
Correct Answer: B. Diffuse ST elevation with PR depression
Rationale:
In acute pericarditis, the classic EKG pattern includes diffuse ST segment elevation across multiple leads along with PR segment depression. This pattern reflects the widespread inflammation of the pericardium. The other options—ST depression only, delta waves, or peaked T waves—are not characteristic of acute pericarditis.
- In acute pericarditis, what is “really common” on physical exam?
A. Pericardial friction rub
B. Loud S1 without murmur
C. Ventricular gallop
D. Fixed split S2
o Answer: A
o Rationale: A pericardial friction rub is a hallmark finding in pericarditis.
- Which complication “will kill your patient” in the context of pericardial disease?
A. Pericardial friction rub
B. Cardiac tamponade
C. Mild chest discomfort
D. Transient arrhythmia
o Answer: B
o Rationale: Cardiac tamponade is a life-threatening complication that leads to reduced cardiac output and shock.
- A patient with acute pericarditis suddenly becomes hypotensive and tachycardic. Which complication should you suspect immediately?
A. Constrictive pericarditis
B. Cardiac tamponade
C. Pericardial friction rub
D. Chronic pericarditis
o Answer: B
o Rationale: Cardiac tamponade causes reduced cardiac output due to pressure on the heart, leading to hypotension and tachycardia, representing an immediate life-threatening complication.
- In the early (stage I) phase of acute pericarditis, what EKG finding is most characteristic?
A. Diffuse T-wave inversions
B. Localized ST depression
C. Widespread ST elevation with upward concavity
D. Prolonged QT interval
o Answer: C
o Rationale: Stage I of pericarditis typically shows diffuse ST elevation with an upward concavity in multiple leads, distinguishing it from localized changes seen in myocardial infarction.
- Which complication is most directly associated with the use of NSAIDs in pericarditis management?
A. Renal failure
B. Gastric ulceration
C. Hepatotoxicity
D. Arrhythmias
o Answer: B
o Rationale: NSAIDs can cause gastric mucosal damage, increasing the risk of peptic ulcers, which is why gastroprotective agents are often co-administered.
- On physical exam, what is the most common auscultatory finding in a patient with acute pericarditis?
A. S3 gallop
B. Pericardial friction rub
C. Systolic murmur
D. Crackles at lung bases
o
Answer: B
o Rationale: A pericardial friction rub is a hallmark of pericarditis, heard in approximately 85% of cases, due to the inflamed pericardial surfaces rubbing together.
- Which chest X-ray appearance is classically associated with a significant pericardial effusion?
A. “Snowman sign”
B. “Water bottle” heart silhouette
C. “Egg on a string” appearance
D. “Boot-shaped” heart
o Answer: B
o Rationale: The “water bottle” silhouette is typical for a large pericardial effusion as the heart appears enlarged and globular.
- To assess for a pericardial effusion and possible tamponade, which imaging modality is most useful?
A. Abdominal ultrasound
B. Echocardiogram
C. Plain chest X-ray
D. Coronary angiography
o Answer: B
o Rationale: Echocardiography is the gold standard for evaluating pericardial effusions and determining their hemodynamic significance, including signs of tamponade.
- A patient with suspected pericarditis finds that his pain improves when he sits up and leans forward. What does this most likely indicate?
A. Myocardial infarction
B. Aortic dissection
C. Pericarditis
D. Pulmonary embolism
o Answer: C
o Rationale: Relief of chest pain on leaning forward is a classic finding in pericarditis because this position reduces the pressure between the inflamed pericardial layers.
- Which laboratory markers are typically elevated in an inflammatory pericarditis? (Select all that apply)
A. Erythrocyte sedimentation rate (ESR)
B. C-reactive protein (CRP)
C. Lactate dehydrogenase (LDH)
D. Brain natriuretic peptide (BNP)
Answer: A, B, C
o Rationale: ESR, CRP, and LDH are markers of inflammation and are often elevated in pericarditis. BNP is more associated with heart failure.
- The pathophysiology of acute pericarditis involves an inflammatory process. Which cells predominantly infiltrate the pericardium in the early phase?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
o.
Answer: B
o Rationale: In the early stages, neutrophils are the primary inflammatory cells involved in acute pericarditis
- What is the initial pharmacologic management for a patient with idiopathic acute pericarditis?
A. Beta-blockers
B. NSAIDs (e.g., ibuprofen) with or without aspirin
C. Calcium channel blockers
D. ACE inhibitors
o Answer: B
o Rationale: NSAIDs are the first-line treatment to reduce inflammation and alleviate pain in idiopathic acute pericarditis.
- In a patient who does not respond to NSAIDs and colchicine, what is the next step in pharmacologic therapy for pericarditis?
A. Increase NSAID dose
B. Start glucocorticoids (e.g., prednisone)
C. Add a beta-blocker
D. Initiate antibiotic therapy
o Answer: B
o Rationale: Glucocorticoids are reserved for cases that are refractory to NSAIDs and colchicine or in patients who cannot tolerate these medications
- What EKG finding suggests a very large pericardial effusion?
A. Electrical alternans
B. Delta waves
C. Peaked T waves
D. Prolonged PR interval
o Answer: A
o Rationale: Electrical alternans, a beat-to-beat variation in the amplitude of the QRS complexes, is classically associated with large pericardial effusions
- Which organism is most commonly implicated in the bacterial (pyogenic) form of infectious pericarditis?
A. Streptococcus pneumoniae
B. Mycobacterium tuberculosis
C. Staphylococcus aureus
D. Escherichia coli
o Answer: C
o Rationale: Staphylococcus aureus is a common pathogen in acute bacterial (pyogenic) pericarditis, often following bacteremia or pneumonia
- For pericarditis to be considered “acute,” symptoms should have been present for less than:
A. 2 weeks
B. 6 weeks
C. 3 months
D. 6 months
o Answer: B
o Rationale: Acute pericarditis is defined as having a duration of symptoms for less than six weeks.
- Which clinical feature helps differentiate pericarditis chest pain from that of a myocardial infarction?
A. Radiation to the left arm
B. Pain relief by sitting forward
C. Severe crushing quality
D. Associated diaphoresis
o Answer: B
o Rationale: Pericarditis pain characteristically improves when the patient sits up and leans forward, unlike the pain of myocardial infarction.
- What is the primary reason that pericarditis pain is relieved by leaning forward?
A. It decreases the heart rate
B. It reduces compression of the coronary arteries
C. It alters the position of the heart to lessen pericardial stretch
D. It improves lung ventilation
Answer: C
o Rationale: Leaning forward minimizes the stretch on the inflamed pericardium by changing the position of the heart, thereby reducing pain.
- Which finding on chest imaging might be seen in both pericardial effusion and other mediastinal pathologies?
A. A “water bottle” configuration
B. Enlarged cardiac silhouette
C. Pneumomediastinum
D. Hyperlucent lung fields
o Answer: B
o Rationale: An enlarged cardiac silhouette on chest X-ray can be seen with pericardial effusion as well as other mediastinal abnormalities, although the “water bottle” sign is more specific.
- Which of the following complications is most concerning in a patient with a pericardial effusion?
A. Development of atrial fibrillation
B. Progression to cardiac tamponade
C. Onset of congestive heart failure
D. Evolution into restrictive cardiomyopathy
o Answer: B
o Rationale: Cardiac tamponade is an acute, life-threatening complication of a pericardial effusion that demands immediate intervention.
- A patient with pericarditis has a history of peptic ulcer disease. Which treatment consideration is most important?
A. Avoidance of beta-blockers
B. Co-administration of proton pump inhibitors with NSAIDs
C. Use of high-dose aspirin only
D. Early initiation of glucocorticoids
o Answer: B
o Rationale: Given the risk of gastrointestinal bleeding with NSAIDs, patients with peptic ulcer disease should receive acid suppression therapy.
- Pericarditis can be associated with autoimmune conditions. Which of the following diseases is most commonly linked with pericarditis?
A. Systemic lupus erythematosus (SLE)
B. Diabetes mellitus
C. Osteoarthritis
D. Hyperthyroidism
o Answer: A
o Rationale: SLE is a well-known autoimmune condition that frequently involves the pericardium, causing pericarditis.