Myopericarditis

Myopericarditis is a combination of both myocarditis and pericarditis appearing in a single individual, namely inflammation of both the pericardium and the heart muscle. It can involve the presence of fluid in the heart.[1]

Myopericarditis
SpecialtyCardiology

Risk factors

The appearance of myopericarditis is associated with infections such as acute tonsillitis, pneumonia, and gastroenteritis.[2]

Smallpox vaccination has been a known risk factor for myocarditis and pericarditis since the 1950s.[3] In 1983, an incidence of myocarditis of 1 per 10 000 was reported among Finnish military personnel.[4] Among US military service members vaccinated between December 2002 and March 2003 with Dryvax smallpox vaccine 18 cases of probable myopericarditis were reported, which was an incidence of 7.8 per 100 000 over 30 days.[5]

A meta-review from 2022 shows that the overall risk for myopericarditis after receiving a COVID-19 vaccine is low.[6] In addition, the incidence of myopericarditis is significantly higher with a smallpox vaccination in comparison with a COVID-19 vaccination.

The ACAM2000 smallpox vaccine has been known to cause myopericarditis in some people.[7][8]

Etymology

When ventricular function is normal, the term myopericarditis is used. Cases with impaired function are labeled perimyocarditis,[9] though the two terms are often used interchangeably. Both will be reflected on an ECG.

In a different naming scheme, inflammation that is predominantly pericarditis with some myocardial involvement is called myopericarditis, while predominant myocarditis with some pericardial involvement is called perimyocarditis.[2]

References
  1. Lu, Lei; Sun, RongRong; Liu, Min; Zheng, Yi; Zhang, Peiying (1 July 2015). "The Inflammatory Heart Diseases: Causes, Symptoms, and Treatments". Cell Biochemistry and Biophysics. 72 (3): 851–855. doi:10.1007/s12013-015-0550-7. PMID 25682012. S2CID 1380814.
  2. Adler, Yehuda; Charron, Philippe; Imazio, Massimo; Badano, Luigi; Barón-Esquivias, Gonzalo; Bogaert, Jan; Brucato, Antonio; Gueret, Pascal; Klingel, Karin; Lionis, Christos; Maisch, Bernhard (2015-11-07). "2015 ESC Guidelines for the diagnosis and management of pericardial diseases". European Heart Journal. 36 (42): 2921–2964. doi:10.1093/eurheartj/ehv318. ISSN 0195-668X. PMC 7539677. PMID 26320112.
  3. Bengtsson E, Lundstrom R. Postvaccinal myocarditis. Cardiologia.1957;30:1-8.
  4. Karjalainen, Jouko; Heikkilä, Juhani; Nieminen, Markku S.; Jalanko, Hannu; Kleemola, Marjaana; Lapinleimu, Kaisa; Sahi, Timo (2009-04-24). "Etiology of Mild Acute Infectious Myocarditis: Relation to Clinical Features". Acta Medica Scandinavica. 213 (1): 65–73. doi:10.1111/j.0954-6820.1983.tb03692.x. PMID 6829323.
  5. Halsell, Jeffrey S. (2003-06-25). "Myopericarditis Following Smallpox Vaccination Among Vaccinia-Naive US Military Personnel". JAMA. 289 (24): 3283–3289. doi:10.1001/jama.289.24.3283. ISSN 0098-7484. PMID 12824210.
  6. Ling, Ryan Ruiyang; Ramanathan, Kollengode; Tan, Felicia Liying; Tai, Bee Choo; Somani, Jyoti; Fisher, Dale; MacLaren, Graeme (2022-04-11). "Myopericarditis following COVID-19 vaccination and non-COVID-19 vaccination: a systematic review and meta-analysis". The Lancet Respiratory Medicine. doi:10.1016/S2213-2600(22)00059-5. ISSN 2213-2600. PMC 9000914. PMID 35421376.
  7. Nalca, Aysegul; Zumbrun, Elizabeth E (25 May 2010). "ACAM2000™: The new smallpox vaccine for United States Strategic National Stockpile". Drug Design, Development and Therapy. 4: 71–79. doi:10.2147/dddt.s3687. PMC 2880337. PMID 20531961.
  8. "Safety Surveillance Cohort Study of Vaccinia Vaccine (ACAM2000®) - Full Text View - ClinicalTrials.gov". 26 January 2018.
  9. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. Zipes, Douglas P.,, Libby, Peter,, Bonow, Robert O.,, Mann, Douglas L.,, Tomaselli, Gordon F.,, Braunwald, Eugene (11th ed.). Philadelphia, PA. 9 January 2018. p. 1663. ISBN 9780323555937. OCLC 1021152059.{{cite book}}: CS1 maint: others (link)


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