Pericardial Effusion Clinical Presentation
- Author: William J Strimel, DO; Chief Editor: Joseph L Fredi, MD more...
History
A patient with pericardial effusion may report the following symptoms:
- Cardiovascular
- Chest pain, pressure, discomfort: Characteristically, pericardial pain may be relieved by sitting up and leaning forward and is intensified by lying supine.
- Light-headedness, syncope
- Palpitations
- Respiratory
- Cough
- Dyspnea
- Hoarseness
- Gastrointestinal
- Hiccoughs
- Neurologic
- Anxiety
- Confusion
Physical
Upon examination, a patient with pericardial effusion may have the following signs:
- Cardiovascular
- Classic Beck triad of pericardial tamponade (hypotension, muffled heart sounds, jugular venous distension).
- Pulsus paradoxus: Exaggeration of physiologic respiratory variation in systemic blood pressure, defined as a decrease in systolic blood pressure of more than 10 mm Hg with inspiration, signaling falling cardiac output during inspiration.
- Pericardial friction rub: The most important physical sign of acute pericarditis may have up to 3 components per cardiac cycle and is high-pitched, scratching, and grating. It can sometimes be elicited only when firm pressure with the diaphragm of the stethoscope is applied to the chest wall at the left lower sternal border. The pericardial friction rub is heard most frequently during expiration with the patient upright and leaning forward.
- Tachycardia
- Hepatojugular reflux: This can be observed by applying pressure to the periumbilical region. A rise in the jugular venous pressure (JVP) of greater than 3 cm H2 O for more than 30 seconds suggests elevated central venous pressure. Transient elevation in JVP may be normal.
- Respiratory
- Tachypnea
- Decreased breath sounds (secondary to pleural effusions)[4]
- Ewart sign - Dullness to percussion beneath the angle of left scapula from compression of the left lung by pericardial fluid
- Gastrointestinal - Hepatosplenomegaly
- Extremities
- Weakened peripheral pulses
- Edema
- Cyanosis
Causes
In up to 60% of cases, pericardial effusion is related to a known or suspected underlying process. Therefore, the diagnostic approach should give strong consideration to coexisting medical conditions.
- Idiopathic: In many cases, the underlying cause is not identified. However, this often relates to the lack of extensive diagnostic evaluation.
- Infectious
- HIV infection can lead to pericardial effusion through several mechanisms, including the following:
- Secondary bacterial infection
- Opportunistic infection
- Malignancy (Kaposi sarcoma, lymphoma)
- "Capillary leak" syndrome, which is associated with effusions in other body cavities
- Viral: The most common cause of infectious pericarditis and myocarditis is viral. Common etiologic organisms include coxsackievirus A and B, and hepatitis viruses.
- Pyogenic (pneumococci, streptococci, staphylococci, Neisseria, Legionella species)
- Tuberculous
- Fungal (histoplasmosis, coccidioidomycosis, Candida)
- Other infections (syphilitic, protozoal, parasitic)
- HIV infection can lead to pericardial effusion through several mechanisms, including the following:
- Neoplasia
- Neoplastic disease can involve the pericardium through the following mechanisms:
- Direct extension from mediastinal structures or the cardiac chamber
- Retrograde extension from the lymphatic system
- Hematologic seeding
- As mentioned previously, the most common cases of malignant effusion are lung, breast, lymphoma, and leukemia. However, patients with malignant melanoma or mesothelioma have a high prevalence of associated pericardial effusions.
- Neoplastic disease can involve the pericardium through the following mechanisms:
- Postoperative/postprocedural
- Pericardial effusions are common after cardiac surgery. In 122 consecutive patients studied serially before and after cardiac surgery, effusions were present in 103 patients; most appeared by postoperative day 2, reached their maximum size by postoperative day 10, and usually resolved without sequelae within the first postoperative month. In a retrospective survey of more than 4,500 postoperative patients, only 48 were found to have moderate or large effusions by echocardiography; of those, 36 met diagnostic criteria for tamponade.[5]
- Use of preoperative anticoagulants, valve surgery, and female sex were all associated with a higher prevalence of tamponade. Symptoms and physical findings of significant postoperative pericardial effusions are frequently nonspecific, and echocardiographic detection and echo-guided pericardiocentesis, when necessary, are safe and effective; prolonged catheter drainage reduces the recurrence rate.[6]
- Pericardial effusions in cardiac transplant patients are associated with an increased prevalence of acute rejection.[7]
- Other less common causes include the following:
- Uremia
- Myxedema
- Severe pulmonary hypertension
- Radiation therapy
- Acute myocardial infarction, including the complication of free wall rupture
- Aortic dissection, leading to hemorrhagic effusion in from leakage into pericardial sac
- Trauma
- Hyperlipidemia
- Chylopericardium
- Familial Mediterranean fever
- Whipple disease
- Hypersensitivity or autoimmune related
- Drug-associated (eg, procainamide, hydralazine, isoniazid, minoxidil, phenytoin, anticoagulants, methysergide)
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