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Pericardial Effusion

Cardiovascular Medicine · NLM MeSH · updated 2026-10-29 · version 1

Citations verified against PubMedNot yet clinician-reviewed10 referencesApproximately 5 min read

Fluid accumulation within the pericardium.

Table of Contents

1. Definition2. Research landscape3. Reading the evidence4. Open-access studies5. Key reviews6. References7. About this article

Definition and research guide

This page combines a MeSH definition, publication statistics and selected research abstracts. It is a starting point for reading the literature, not a medical textbook or a systematic evidence review.

Content available: 4 complete abstracts (970 words), 10 references. Full article text is not stored or reproduced here; follow the PMID, DOI or PMC links to read the original sources and their access terms.

Definition

Fluid accumulation within the pericardium. Serous effusions are associated with pericardial diseases. Hemopericardium is associated with trauma. Lipid-containing effusion (chylopericardium) results from leakage of thoracic duct. Severe cases can lead to cardiac tamponade.

Definition: NLM Medical Subject Headings (MeSH) scope note (Public domain (U.S. National Library of Medicine); attribution requested). View the MeSH record.

Also known as: Effusion, Pericardial; Effusions, Pericardial; Pericardial Effusions; Hemopericardium; Chylopericardium; Chylopericardiums.

Where it fits in the MeSH classification

Broader topics
Heart Diseases
See also
Cardiac Tamponade

Related concepts

  • Pericardium
  • Thoracic Duct
  • Cardiac Tamponade

Research landscape

PubMed indexes 9,841 records tagged with the MeSH heading “Pericardial Effusion” (counts retrieved 2026-10-29). 1,290 of them (13.1%) were published from 2020 onward, and the busiest period so far is through 1999 with 4,498 records.

Reviews account for 943 records (9.6%) and meta-analyses for 32. Randomized controlled trials number 80 (0.8%) as a share of all records on the topic. Randomized trials make up only a small share of this literature, so much of what is known comes from laboratory, observational or descriptive work.

PubMed records by publication periodthrough 1999: 4,498 records; 2000-2009: 1,798 records; 2010-2019: 2,255 records; 2020 onward: 1,290 records4,498through 19991,7982000-20092,2552010-20191,2902020 onward
Records in PubMed indexed with this heading, by publication period. Real counts from NCBI E-utilities; the final period covers only part of the current year. Volume reflects how much has been published, not how strong the evidence is.
Show the data
PeriodRecords
through 19994,498
2000-20091,798
2010-20192,255
2020 onward1,290
Share of records by publication typeReviews: 9.6 percent; Meta-analyses: 0.3 percent; Randomized controlled trials: 0.8 percentReviews9.6% (943)Meta-analyses0.3% (32)Randomized controlled trials0.8% (80)
Share of all PubMed records on this heading that carry each publication type. Types overlap with other records, so the shares do not sum to 100%.
Publication-type chart data
Publication types among 9,841 PubMed records
TypeRecordsShare
Reviews9439.6%
Meta-analyses320.3%
Randomized controlled trials800.8%

Method: PubMed query "Pericardial Effusion"[MeSH Terms] with publication-type and date filters, retrieved 2026-10-29.

Reading the evidence in cardiovascular medicine

Cardiovascular medicine has an unusually large body of randomized trials, so the type of outcome matters: hard clinical events such as death, heart attack and stroke carry more weight than changes in blood pressure, cholesterol or imaging markers that only predict risk. Observational studies can show associations but are confounded by age, lifestyle and other illness. Check whether a result is about prevention or treatment, the baseline risk of participants, and the absolute rather than only the relative size of any benefit.

Evidence from open-access studies

These open-access studies come from PubMed’s best-match results for this heading (papers whose main topic it is), ranked here by citation count, with one recent addition. Each abstract is reproduced in full under its recorded open licence so that you can read the authors’ own words. They illustrate the literature; they are not a systematic summary of it. Citation counts measure attention, not reliability or clinical benefit.

Study comparison — selected abstracts, not a systematic review
Study / authorsYearSource label / designEurope PMC citationsLicence / source
Role of antibodies, inflammatory markers, and echocardiographic findings in postacute cardiopulmonary symptoms after SARS-CoV-2 infection
Durstenfeld MS, Peluso MJ, Kelly JD, Win S, Swaminathan S, Li D, et al.
2022Research article
Design not recorded in structured metadata
39cc by
PMID 35389890 · DOI · PMC9220849
Prognostic implications of pericardial and pleural effusion in patients with cardiac amyloidosis
Binder C, Duca F, Binder T, Rettl R, Dachs TM, Seirer B, et al.
2021Research article
Design not recorded in structured metadata
32cc by
PMID 32914241 · DOI · PMC8055634
Cardiac Magnetic Resonance to Predict Cardiac Mass Malignancy: The CMR Mass Score
Paolisso P, Bergamaschi L, Angeli F, Belmonte M, Foà A, Canton L, et al.
2024Research article
Design not recorded in structured metadata
31cc by
PMID 38502734 · DOI · PMC10949976
Clinical analysis of 255 children with multiple serous effusions
Jin W, Lu L, Gao Q, Lou T, Hu W, Chen Y, et al.
2026Research article
Design not recorded in structured metadata
2cc by
PMID 41481785 · DOI · PMC12777862

Role of antibodies, inflammatory markers, and echocardiographic findings in postacute cardiopulmonary symptoms after SARS-CoV-2 infection [1]

Research article Durstenfeld MS, Peluso MJ, Kelly JD, Win S, Swaminathan S, Li D, et al. · · 2022 · cited 39 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
Shortness of breath, chest pain, and palpitations occur as postacute sequelae of COVID-19, but whether symptoms are associated with echocardiographic abnormalities, cardiac biomarkers, or markers of systemic inflammation remains unknown.
Closing excerpt
Investigation into inflammation as a mechanism underlying postacute sequelae of COVID-19 is warranted.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (211 words)

Shortness of breath, chest pain, and palpitations occur as postacute sequelae of COVID-19, but whether symptoms are associated with echocardiographic abnormalities, cardiac biomarkers, or markers of systemic inflammation remains unknown. In a cross-sectional analysis, we assessed symptoms, performed echocardiograms, and measured biomarkers among adults more than 8 weeks after confirmed SARS-CoV-2 infection. We modeled associations between symptoms and baseline characteristics, echocardiographic findings, and biomarkers using logistic regression. We enrolled 102 participants at a median of 7.2 months following COVID-19 onset; 47 individuals reported dyspnea, chest pain, or palpitations. Median age was 52 years, and 41% of participants were women. Female sex, hospitalization, IgG antibody against SARS-CoV-2 receptor binding domain, and C-reactive protein were associated with symptoms. Regarding echocardiographic findings, 4 of 47 participants (9%) with symptoms had pericardial effusions compared with 0 of 55 participants without symptoms; those with effusions had a median of 4 symptoms compared with a median of 1 symptom in those without effusions. There was no strong evidence for a relationship between symptoms and echocardiographic functional parameters or other biomarkers. Among adults more than 8 weeks after SARS-CoV-2 infection, SARS-CoV-2 RBD antibodies, markers of inflammation, and, possibly, pericardial effusions are associated with cardiopulmonary symptoms. Investigation into inflammation as a mechanism underlying postacute sequelae of COVID-19 is warranted.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 35389890 · DOI · PMC9220849

Prognostic implications of pericardial and pleural effusion in patients with cardiac amyloidosis [2]

Research article Binder C, Duca F, Binder T, Rettl R, Dachs TM, Seirer B, et al. · · 2021 · cited 32 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundPericardial and pleural effusion are common findings in patients with cardiac amyloidosis (CA).
Closing excerpt
While pleural effusion was clearly associated with poor RV function in AL, we were not able to detect this association with pericardial effusion.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (254 words)

BackgroundPericardial and pleural effusion are common findings in patients with cardiac amyloidosis (CA). It is not known, whether effusions correlate with right ventricular (RV) function in these patients. Furthermore, data on the prognostic significance of pleural and pericardial effusion in CA is scarce.MethodsPatients with transthyretin (ATTR) and light chain (AL) CA were included in a clinical registry. All patients underwent transthoracic echocardiography at baseline. The presence of pericardial and pleural effusion was determined in every patient. The clinical endpoint was defined as cardiac death or heart failure hospitalization.ResultsIn total, 143 patients were analysed. Of these, 85 patients were diagnosed with ATTR and 58 patients with AL. Twenty-four patients presented with isolated pericardial effusion and 35 with isolated pleural effusion. In 19 patients, both pericardial and pleural effusion were found and in 65 patients no effusion was present at baseline. The presence of pleural effusion correlated well with poor RV function, measured by global RV free-wall strain (p = 0.007) in patients with AL, but not in ATTR. No such correlation could be found for pericardial effusion in either amyloidosis subtype. Patients with AL presenting with pleural effusion had worse outcomes compared to patients with pericardial effusion alone or no effusion at baseline. In the ATTR group, there was no difference in outcomes according to presence and type of effusion.ConclusionMore than 50% of patients with CA presented with pleural and/or pericardial effusions. While pleural effusion was clearly associated with poor RV function in AL, we were not able to detect this association with pericardial effusion.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 32914241 · DOI · PMC8055634

Cardiac Magnetic Resonance to Predict Cardiac Mass Malignancy: The CMR Mass Score [3]

Research article Paolisso P, Bergamaschi L, Angeli F, Belmonte M, Foà A, Canton L, et al. · · 2024 · cited 31 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundMultimodality imaging is currently suggested for the noninvasive diagnosis of cardiac masses.
Closing excerpt
A CMR mass score of ≥5 predicted a higher risk of all-cause death (PConclusionsA CMR-derived model, including mass morphology and tissue characterization, showed excellent accuracy, superior to echocardiography, in predicting cardiac masses malignancy, with prognostic implications.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (275 words)

BackgroundMultimodality imaging is currently suggested for the noninvasive diagnosis of cardiac masses. The identification of cardiac masses' malignant nature is essential to guide proper treatment. We aimed to develop a cardiac magnetic resonance (CMR)-derived model including mass localization, morphology, and tissue characterization to predict malignancy (with histology as gold standard), to compare its accuracy versus the diagnostic echocardiographic mass score, and to evaluate its prognostic ability.MethodsObservational cohort study of 167 consecutive patients undergoing comprehensive echocardiogram and CMR within 1-month time interval for suspected cardiac mass. A definitive diagnosis was achieved by histological examination or, in the case of cardiac thrombi, by histology or radiological resolution after adequate anticoagulation treatment. Logistic regression was performed to assess CMR-derived independent predictors of malignancy, which were included in a predictive model to derive the CMR mass score. Kaplan-Meier curves and Cox regression were used to investigate the prognostic ability of predictors.ResultsIn CMR, mass morphological features (non-left localization, sessile, polylobate, inhomogeneity, infiltration, and pericardial effusion) and mass tissue characterization features (first-pass perfusion and heterogeneity enhancement) were independent predictors of malignancy. The CMR mass score (range, 0-8 and cutoff, ≥5), including sessile appearance, polylobate shape, infiltration, pericardial effusion, first-pass contrast perfusion, and heterogeneity enhancement, showed excellent accuracy in predicting malignancy (areas under the curve, 0.976 [95% CI, 0.96-0.99]), significantly higher than diagnostic echocardiographic mass score (areas under the curve, 0.932; P=0.040). The agreement between the diagnostic echocardiographic mass and CMR mass scores was good (κ=0.66). A CMR mass score of ≥5 predicted a higher risk of all-cause death (PConclusionsA CMR-derived model, including mass morphology and tissue characterization, showed excellent accuracy, superior to echocardiography, in predicting cardiac masses malignancy, with prognostic implications.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 38502734 · DOI · PMC10949976

Clinical analysis of 255 children with multiple serous effusions [4]

Research article Jin W, Lu L, Gao Q, Lou T, Hu W, Chen Y, et al. · · 2026 · cited 2 times (Europe PMC)

Abstract reading summary — source excerpts
Opening excerpt
BackgroundThis study aimed to analyze the etiological spectrum, clinical features, and pathological correlates of multiple serous effusions in pediatric patients to inform clinical decision-making.
Closing excerpt
The number of affected cavities may serve as an indicator of disease severity.
Interpretation limits
Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (230 words)

BackgroundThis study aimed to analyze the etiological spectrum, clinical features, and pathological correlates of multiple serous effusions in pediatric patients to inform clinical decision-making.Materials and methodsA retrospective study was conducted on 255 children diagnosed with multiple serous effusions at the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University between January 1, 2014, and July 1, 2024.ResultsThe most common identified causes were pneumonia (n = 80, 31.37%), and trauma (n = 28, 10.98%). Etiologies demonstrated age and sex-specific patterns. Pneumonia predominated in preschool/school-aged children, and trauma was more common among preschool/school-aged boys. Tumors mainly affected school-aged/adolescent males, while connective tissue diseases (primarily systemic lupus erythematosus) predominated in adolescent females. Pleural effusion was the most common manifestation (n = 243, 95.3%), followed by peritoneal (n = 187, 73.3%) and pericardial effusions (n = 136, 53.3%). The nature and distribution of effusions correlated with the underlying disease. Pneumonia/tumor cases exhibited higher susceptibility to pleural and pericardial effusions, predominantly exudative. Connective tissue disease cases frequently demonstrated involvement of all three serous cavities, predominantly exudative. Cardiac insufficiency cases typically presented with transudative effusions. The triple serous cavity effusion group exhibited significantly lower hemoglobin, serum albumin, calcium, and IgM levels (p p ConclusionThe etiology of pediatric multiple serous effusions is diverse and closely linked to patient age and effusion location. The number of affected cavities may serve as an indicator of disease severity.

Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 41481785 · DOI · PMC12777862

Key reviews and meta-analyses

The most cited review-type papers among PubMed’s best-match results for this heading, listed with bibliographic details only. Follow the links for the full text and access terms.

  • Research article 2015 ESC Guidelines for the diagnosis and management of pericardial diseases: The Task Force for the Diagnosis and Management of Pericardial Diseases of the European Society of Cardiology (ESC)Endorsed by: The European Association for Cardio-Thoracic Surgery (EACTS) [5]
    Adler Y, Charron P, Imazio M, Badano L, Barón-Esquivias G, Bogaert J, et al. · Eur Heart J · 2015 · cited 1,582 times (Europe PMC)
  • Research article Management of pericardial effusion [6]
    Imazio M, Adler Y · Eur Heart J · 2013 · cited 229 times (Europe PMC)
  • Research article CT and MR imaging of pericardial disease [7]
    Wang ZJ, Reddy GP, Gotway MB, Yeh BM, Hetts SW, Higgins CB · Radiographics · 2003 · cited 219 times (Europe PMC)
  • Research article Cardiac tamponade and pericardial effusion: respiratory variation in transvalvular flow velocities studied by Doppler echocardiography [8]
    Appleton CP, Hatle LK, Popp RL · J Am Coll Cardiol · 1988 · cited 199 times (Europe PMC)
  • Research article Treatment of malignant pericardial effusion [9]
    Vaitkus PT, Herrmann HC, LeWinter MM · JAMA · 1994 · cited 162 times (Europe PMC)
  • Research article Does this patient with a pericardial effusion have cardiac tamponade? [10]
    Roy CL, Minor MA, Brookhart MA, Choudhry NK · JAMA · 2007 · cited 126 times (Europe PMC)

References

  1. Durstenfeld MS, Peluso MJ, Kelly JD, Win S, Swaminathan S, Li D, et al.. Role of antibodies, inflammatory markers, and echocardiographic findings in postacute cardiopulmonary symptoms after SARS-CoV-2 infection. . 2022. PMID 35389890 · DOI · PMC9220849
  2. Binder C, Duca F, Binder T, Rettl R, Dachs TM, Seirer B, et al.. Prognostic implications of pericardial and pleural effusion in patients with cardiac amyloidosis. . 2021. PMID 32914241 · DOI · PMC8055634
  3. Paolisso P, Bergamaschi L, Angeli F, Belmonte M, Foà A, Canton L, et al.. Cardiac Magnetic Resonance to Predict Cardiac Mass Malignancy: The CMR Mass Score. . 2024. PMID 38502734 · DOI · PMC10949976
  4. Jin W, Lu L, Gao Q, Lou T, Hu W, Chen Y, et al.. Clinical analysis of 255 children with multiple serous effusions. . 2026. PMID 41481785 · DOI · PMC12777862
  5. Adler Y, Charron P, Imazio M, Badano L, Barón-Esquivias G, Bogaert J, et al.. 2015 ESC Guidelines for the diagnosis and management of pericardial diseases: The Task Force for the Diagnosis and Management of Pericardial Diseases of the European Society of Cardiology (ESC)Endorsed by: The European Association for Cardio-Thoracic Surgery (EACTS). Eur Heart J. 2015. PMID 26320112 · DOI · PMC7539677
  6. Imazio M, Adler Y. Management of pericardial effusion. Eur Heart J. 2013. PMID 23125278 · DOI
  7. Wang ZJ, Reddy GP, Gotway MB, Yeh BM, Hetts SW, Higgins CB. CT and MR imaging of pericardial disease. Radiographics. 2003. PMID 14557510 · DOI
  8. Appleton CP, Hatle LK, Popp RL. Cardiac tamponade and pericardial effusion: respiratory variation in transvalvular flow velocities studied by Doppler echocardiography. J Am Coll Cardiol. 1988. PMID 3281990 · DOI
  9. Vaitkus PT, Herrmann HC, LeWinter MM. Treatment of malignant pericardial effusion. JAMA. 1994. PMID 8007081 · DOI
  10. Roy CL, Minor MA, Brookhart MA, Choudhry NK. Does this patient with a pericardial effusion have cardiac tamponade?. JAMA. 2007. PMID 17456823 · DOI

About this article

Sources
NLM Medical Subject Headings (definition, synonyms); NCBI PubMed (counts, identifiers); Europe PMC (open-access abstracts and citation counts).
Verification
Every reference was resolved against PubMed on 2026-10-31; title, year and DOI matched.
Review state
automated source verified; no human expert review has been recorded yet.
Version
1, last updated 2026-10-29.

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At a glance

9,841
PubMed records on this heading
13%
published since 2020
943
review articles
80
randomized trials
10
verified references below

Counts come from PubMed on 2026-10-29; they show how much has been written, not how strong the evidence is.

Related topics See all →

  • Cardiac TamponadeCardiovascular Medicine
  • PericarditisCardiovascular Medicine
  • Cardiovascular DiseasesCardiovascular Medicine
  • Ventricular PressureCardiovascular Medicine
  • Out-of-Hospital Cardiac ArrestCardiovascular Medicine

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