Myocarditis
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In medicine (cardiology), myocarditis is inflammation of heart muscle (myocardium). It resembles a heart attack but coronary arteries are not blocked.

Myocarditis is most often due to infection by common viruses, such as parvovirus B19, less commonly non-viral pathogens such as Borrelia burgdorferi (Lyme disease) or Trypanosoma cruzi, or as a hypersensitivity response to drugs.

The definition of myocarditis varies, but the central feature is an infection of the heart, with an inflammatory infiltrate, and damage to the heart muscle, without the blockage of coronary arteries that define a heart attack (myocardial infarction) or other common non-infectious causes. Myocarditis may or may not include death (necrosis) of heart tissue. It may include dilated cardiomyopathy.

Myocarditis is often an autoimmune reaction. Streptococcal M protein and coxsackievirus B have regions (epitopes) that are immunologically similar to cardiac myosin. After the virus is gone, the immune system may attack cardiac myosin.

Because a definitive diagnosis requires a heart biopsy, which doctors are reluctant to do because they are invasive, statistics on the incidence of myocarditis vary widely.

The consequences of myocarditis thus also vary widely. It can cause a mild disease without any symptoms that resolves itself, or it may cause chest pain, heart failure, or sudden death. An acute myocardial infarction-like syndrome with normal coronary arteries has a good prognosis. Heart failure, even with dilated left ventricle, may have a good prognosis. Ventricular arrhythmias and high-degree heart block have a poor prognosis. Loss of right ventricular function is a strong predictor of death.

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Community rallies to help Milford cop recovering from heart transplant (video) - New Haven Register (subscription) Tweet this news
New Haven Register (subscription)--After a battery of medical tests, Vitti was diagnosed with a rare heart disease � severe viral -myocarditis- � resulting in a heart transplant on Sept. 29. ... - Date : Sun, 31 Oct 2010 05:55:49 GMT+00:00
Community briefs - Helena Independent Record Tweet this news
Helena Independent Record--16 at 801 N. Fee St. The event will benefit Triston Jay Lee who is a 7-month-old Helena boy suffering from a heart complication due to -myocarditis-. ... - Date : Fri, 05 Nov 2010 08:46:32 GMT+00:00
Annie Lawler to play at benefit - Post-Bulletin Tweet this news
Post-Bulletin--5 at a benefit for the -Myocarditis- Foundation at Rochester Golf and Country Club. Besides live music for listening and dancing, the event will include hors ... - Date : Thu, 28 Oct 2010 11:33:15 GMT+00:00
Dr. Paul Donohue Viruses can attack the heart - The Detroit News Tweet this news
The Detroit News--Dear RR: Your friend had -myocarditis-, a heart inflammation. Viruses are one cause of it. The virus most often involved is the Coxsackie, named after the New ... - Date : Mon, 25 Oct 2010 05:12:53 GMT+00:00
Woman died from rare infection - The Bolton News Tweet this news
The Bolton News--Dr Jonathon Pearson, a consultant histopathologist at the hospital, said a post-mortem examination revealed she had developed lymphocytic -myocarditis-. ... - Date : Fri, 05 Nov 2010 09:15:05 GMT+00:00
East Ridge student, 17, died of heart condition, report says - Chattanooga Times Free Press Tweet this news
Chattanooga Times Free Press--Shanecia Gabrielle Kelly likely died of -myocarditis-, according to the report. The medical website WebMD describes the condition as an “inflammation of the ... - Date : Wed, 20 Oct 2010 21:11:16 GMT+00:00
Cause of death released for East Ridge Student - WRCB-TV Tweet this news
WRCB-TV--The report shows Kelly died from a condition called -Myocarditis-, an inflammation of the heart muscle. It is not known what caused the condition. ... - Date : Tue, 19 Oct 2010 19:49:27 GMT+00:00
5K honoring late Dana Hills runner is Sunday - OCRegister Tweet this news
OCRegister--Megan Myers Memorial 5K Run/Walk will help raise money to increase awareness of -myocarditis-, which can cause sudden cardiac arrest. The Megan Myers Memorial ... - Date : Mon, 11 Oct 2010 12:20:01 GMT+00:00
Cardiomyocyte-specific microRNA presents diagnostic potential for CV disorders - Cardiology Today Tweet this news
Cardiology Today--Plasma levels of select microRNA were found to be significantly higher in patients with such conditions as acute MI and viral -myocarditis-, ... - Date : Thu, 14 Oct 2010 21:04:41 GMT+00:00
Run 4 Megan One More Time - Dana Point Times Tweet this news
Dana Point Times--by Andrea Swayne Megan was a beautiful, healthy, 14-year-old who passed away unexpectedly from sudden cardiac arrest, caused my -Myocarditis- on September 26, ... - Date : Fri, 15 Oct 2010 20:17:21 GMT+00:00

Cardiovascular disease: heart disease * Circulatory system pathology (I00-I52, 390-429)

Ischaemic
CD/CHDCAD * Coronary thrombosis * Coronary vasospasm * Coronary artery aneurysm * Coronary artery dissection * Myocardial Bridge
Active ischemiaAngina pectoris (Prinzmetal's angina, Stable angina) * Acute coronary (Unstable angina, Myocardial infarction / heart attack)
Sequelaehours (Myocardial stunning, Hibernating myocardium) * days (Myocardial rupture) * weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
Layers

Cardiovascular disease: heart disease * Circulatory system pathology (I00-I52, 390-429)

Ischaemic
CD/CHDCAD * Coronary thrombosis * Coronary vasospasm * Coronary artery aneurysm * Coronary artery dissection * Myocardial Bridge
Active ischemiaAngina pectoris (Prinzmetal's angina, Stable angina) * Acute coronary (Unstable angina, Myocardial infarction / heart attack)
Sequelaehours (Myocardial stunning, Hibernating myocardium) * days (Myocardial rupture) * weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
Layers
Pericardium
Pericarditis (Acute, Chronic/Constrictive) * Pericardial effusion (Hemopericardium, Cardiac tamponade)
Ischaemic
CD/CHDCAD * Coronary thrombosis * Coronary vasospasm * Coronary artery aneurysm * Coronary artery dissection * Myocardial Bridge
Active ischemiaAngina pectoris (Prinzmetal's angina, Stable angina) * Acute coronary (Unstable angina, Myocardial infarction / heart attack)
Sequelaehours (Myocardial stunning, Hibernating myocardium) * days (Myocardial rupture) * weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
Layers
subgroup |groupstyle=background-color: MistyRose |Pericardium |Pericarditis (Acute, Chronic/Constrictive) * Pericardial effusion (Hemopericardium, Cardiac tamponade) |Myocardium |Myocarditis (Chagas disease) Cardiomyopathy: Dilated (Alcoholic) * Hypertrophic * Restrictive (Loeffler endocarditis, Cardiac amyloidosis, Endocardial fibroelastosis) Arrhythmogenic right ventricular dysplasia |Endocardium/
valves |

Cardiovascular disease: heart disease * Circulatory system pathology (I00-I52, 390-429)

Ischaemic
CD/CHDCAD * Coronary thrombosis * Coronary vasospasm * Coronary artery aneurysm * Coronary artery dissection * Myocardial Bridge
Active ischemiaAngina pectoris (Prinzmetal's angina, Stable angina) * Acute coronary (Unstable angina, Myocardial infarction / heart attack)
Sequelaehours (Myocardial stunning, Hibernating myocardium) * days (Myocardial rupture) * weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
Layers
Pericardium
Pericarditis (Acute, Chronic/Constrictive) * Pericardial effusion (Hemopericardium, Cardiac tamponade)
Ischaemic
CD/CHDCAD * Coronary thrombosis * Coronary vasospasm * Coronary artery aneurysm * Coronary artery dissection * Myocardial Bridge
Active ischemiaAngina pectoris (Prinzmetal's angina, Stable angina) * Acute coronary (Unstable angina, Myocardial infarction / heart attack)
Sequelaehours (Myocardial stunning, Hibernating myocardium) * days (Myocardial rupture) * weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
Layers
subgroup |groupstyle=background-color: MistyRose |Pericardium |Pericarditis (Acute, Chronic/Constrictive) * Pericardial effusion (Hemopericardium, Cardiac tamponade) |Myocardium |Myocarditis (Chagas disease) Cardiomyopathy: Dilated (Alcoholic) * Hypertrophic * Restrictive (Loeffler endocarditis, Cardiac amyloidosis, Endocardial fibroelastosis) Arrhythmogenic right ventricular dysplasia |Endocardium/
valves |
Pericardium
Pericarditis (Acute, Chronic/Constrictive) * Pericardial effusion (Hemopericardium, Cardiac tamponade)
Ischaemic
CD/CHDCAD * Coronary thrombosis * Coronary vasospasm * Coronary artery aneurysm * Coronary artery dissection * Myocardial Bridge
Active ischemiaAngina pectoris (Prinzmetal's angina, Stable angina) * Acute coronary (Unstable angina, Myocardial infarction / heart attack)
Sequelaehours (Myocardial stunning, Hibernating myocardium) * days (Myocardial rupture) * weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
Layers
subgroup |groupstyle=background-color: MistyRose |Pericardium |Pericarditis (Acute, Chronic/Constrictive) * Pericardial effusion (Hemopericardium, Cardiac tamponade) |Myocardium |Myocarditis (Chagas disease) Cardiomyopathy: Dilated (Alcoholic) * Hypertrophic * Restrictive (Loeffler endocarditis, Cardiac amyloidosis, Endocardial fibroelastosis) Arrhythmogenic right ventricular dysplasia |Endocardium/
valves |
Pre-excitation syndrome
Wolff-Parkinson-White * Lown-Ganong-Levine
Flutter/fibrillation
Atrial flutter * Ventricular flutter * Atrial fibrillation (Familial) * Ventricular fibrillation
Pacemaker
Wandering pacemaker * Ectopic pacemaker/Ectopic beat * Parasystole * Multifocal atrial tachycardia * Pacemaker syndrome
Long QT syndrome
Romano-Ward syndrome * Andersen-Tawil syndrome * Jervell and Lange-Nielsen syndrome
Cardiac arrest
Sudden cardiac death * Asystole * Pulseless electrical activity * Sinoatrial arrest
Other/ungrouped
hexaxial reference system (Right axis deviation, Left axis deviation) * QT (Short QT syndrome) * T (T wave alternans) * ST (Osborn wave, ST elevation, ST depression)

Inflammation

Acute
Plasma derived mediatorsBradykinin * complement (C3, C5a, MAC) * coagulation (Factor XII, Plasmin, Thrombin)
Cell derived mediatorspreformed: Lysosome granules * vasoactive amines (Histamine, Serotonin)
synthesized on demand: cytokines (IFN-γ, IL-8, TNF-α, IL-1) * eicosanoids (Leukotriene B4, Prostaglandins) * Nitric oxide * Kinins
Chronic
Macrophage * Epithelioid cell * Giant cell * Granuloma
Processes
Traditional: Rubor * Calor * Tumor * Dolor (pain) * Functio laesa
Modern: Acute-phase reaction/Fever * Vasodilation * Increased vascular permeability * Exudate * Leukocyte extravasation * Chemotaxis
Specific types
NervousCNS (Encephalitis, Myelitis) * Meningitis (Arachnoiditis) * PNS (Neuritis) * eye (Dacryoadenitis, Scleritis, Keratitis, Choroiditis, Retinitis, Chorioretinitis, Blepharitis, Conjunctivitis, Iritis, Uveitis) * ear (Otitis, Labyrinthitis, Mastoiditis)
CardiovascularCarditis (Endocarditis, Myocarditis, Pericarditis) * Vasculitis (Arteritis, Phlebitis, Capillaritis)
Respiratoryupper (Sinusitis, Rhinitis, Pharyngitis, Laryngitis) * lower (Tracheitis, Bronchitis, Bronchiolitis, Pneumonitis, Pleuritis) * Mediastinitis
Digestivemouth (Stomatitis, Gingivitis, Gingivostomatitis, Glossitis, Tonsillitis, Sialadenitis/Parotitis, Cheilitis, Pulpitis, Gnathitis) * tract (Esophagitis, Gastritis, Gastroenteritis, Enteritis, Colitis, Enterocolitis, Duodenitis, Ileitis, Caecitis, Appendicitis, Proctitis) * accessory (Hepatitis, Cholangitis, Cholecystitis, Pancreatitis) * Peritonitis
IntegumentaryDermatitis (Folliculitis) * Cellulitis * Hidradenitis
MusculoskeletalArthritis * Dermatomyositis * soft tissue (Myositis, Synovitis/Tenosynovitis, Bursitis, Enthesitis, Fasciitis, Capsulitis, Epicondylitis, Tendinitis, Panniculitis)
Osteochondritis: Osteitis (Spondylitis, Periostitis) * Chondritis
UrinaryNephritis (Glomerulonephritis, Pyelonephritis) * Ureteritis * Cystitis * Urethritis
Reproductivefemale: Oophoritis * Salpingitis * Endometritis * Parametritis * Cervicitis * Vaginitis * Vulvitis * Mastitis male: Orchitis * Epididymitis * Prostatitis * Balanitis * Balanoposthitis pregnancy/newborn: Chorioamnionitis * Omphalitis
EndocrineInsulitis * Hypophysitis * Thyroiditis * Parathyroiditis * Adrenalitis
LymphaticLymphangitis * Lymphadenitis



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