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Varun Kumar (talk | contribs) New page: {{myocarditis}} {{CMG}}; '''Associate Editor(s)-In-Chief:''' Varun Kumar, M.B.B.S. ==Electrocardiogram== The ECG findings most commonly seen in myocarditis are<r... |
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==Electrocardiogram== | ==Electrocardiogram== | ||
EKG findings in myocarditis are similar to those in [[pericarditis]] and [[myocardial infarction]]<ref name="pmid3354405">{{cite journal| author=Miklozek CL, Crumpacker CS, Royal HD, Come PC, Sullivan JL, Abelmann WH| title=Myocarditis presenting as acute myocardial infarction. | journal=Am Heart J | year= 1988 | volume= 115 | issue= 4 | pages= 768-76 | pmid=3354405 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=3354405 }} </ref><ref name="pmid14645641">{{cite journal| author=Wang K, Asinger RW, Marriott HJ| title=ST-segment elevation in conditions other than acute myocardial infarction. | journal=N Engl J Med | year= 2003 | volume= 349 | issue= 22 | pages= 2128-35 | pmid=14645641 | doi=10.1056/NEJMra022580 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=14645641 }} </ref>. Myocarditis should be suspected in patients who are at low risk for [[MI]] and in those with normal coronaries on [[angiogram]]. | |||
The [[electrocardiogram|ECG]] findings most commonly seen in myocarditis are<ref name="pmid11070105">{{cite journal| author=Feldman AM, McNamara D|title=Myocarditis. | journal=N Engl J Med | year= 2000 | volume= 343 | issue= 19 | pages= 1388-98 | pmid=11070105 |doi=10.1056/NEJM200011093431908 | pmc= | url= }} </ref>: | The [[electrocardiogram|ECG]] findings most commonly seen in myocarditis are<ref name="pmid11070105">{{cite journal| author=Feldman AM, McNamara D|title=Myocarditis. | journal=N Engl J Med | year= 2000 | volume= 343 | issue= 19 | pages= 1388-98 | pmid=11070105 |doi=10.1056/NEJM200011093431908 | pmc= | url= }} </ref>: | ||
*[[Sinus tachycardia]] | *[[Sinus tachycardia]] | ||
*Diffuse [[T wave]] inversions | *Diffuse [[T wave]] inversions | ||
*[[ST segment]] elevation without reciprocal depression | *[[ST segment]] elevation without reciprocal depression. This helps in differentiating [[myocarditis]] from [[MI|infarction]] particularly when EKG changes are diffuse. | ||
*Low voltage QRS may also be observed. | |||
*[[Arrhythmias]] such as atrial and ventricular ectopics, [[tachycardia]]s and [[Atrial fibrillation|fibrillation]]s may also be present and is common in Chagas heart disease. | |||
*Heart blocks are frequently observed in idiopathic [[giant cell myocarditis]] and cardiac [[sarcoidosis]]. | |||
High rates of death or cardiac transplantations are associated with Q waves or [[left bundle branch block]]<ref name="pmid10089938">{{cite journal| author=Nakashima H, Katayama T, Ishizaki M, Takeno M, Honda Y, Yano K| title=Q wave and non-Q wave myocarditis with special reference to clinical significance. | journal=Jpn Heart J | year= 1998 | volume= 39 | issue= 6 | pages= 763-74 | pmid=10089938 | doi= | pmc= | url= }} </ref> | |||
These EKG changes may persist for few months before they resolve spontaneously. | |||
[[Image:Peri022.jpg|thumb|left|400px|[[ST segment elevation]]s without reciprocal depression in myocarditis]] | |||
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==References== | ==References== | ||
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Varun Kumar, M.B.B.S.
Electrocardiogram
EKG findings in myocarditis are similar to those in pericarditis and myocardial infarction[1][2]. Myocarditis should be suspected in patients who are at low risk for MI and in those with normal coronaries on angiogram.
The ECG findings most commonly seen in myocarditis are[3]:
- Sinus tachycardia
- Diffuse T wave inversions
- ST segment elevation without reciprocal depression. This helps in differentiating myocarditis from infarction particularly when EKG changes are diffuse.
- Low voltage QRS may also be observed.
- Arrhythmias such as atrial and ventricular ectopics, tachycardias and fibrillations may also be present and is common in Chagas heart disease.
- Heart blocks are frequently observed in idiopathic giant cell myocarditis and cardiac sarcoidosis.
High rates of death or cardiac transplantations are associated with Q waves or left bundle branch block[4]
These EKG changes may persist for few months before they resolve spontaneously.
References
- ↑ Miklozek CL, Crumpacker CS, Royal HD, Come PC, Sullivan JL, Abelmann WH (1988). "Myocarditis presenting as acute myocardial infarction". Am Heart J. 115 (4): 768–76. PMID 3354405.
- ↑ Wang K, Asinger RW, Marriott HJ (2003). "ST-segment elevation in conditions other than acute myocardial infarction". N Engl J Med. 349 (22): 2128–35. doi:10.1056/NEJMra022580. PMID 14645641.
- ↑ Feldman AM, McNamara D (2000). "Myocarditis". N Engl J Med. 343 (19): 1388–98. doi:10.1056/NEJM200011093431908. PMID 11070105.
- ↑ Nakashima H, Katayama T, Ishizaki M, Takeno M, Honda Y, Yano K (1998). "Q wave and non-Q wave myocarditis with special reference to clinical significance". Jpn Heart J. 39 (6): 763–74. PMID 10089938.