Chagas disease electrocardiogram: Difference between revisions
Gerald Chi (talk | contribs) |
|||
Line 3: | Line 3: | ||
Please help WikiDoc by adding content here. It's easy! Click [[Help:How_to_Edit_a_Page|here]] to learn about editing. | Please help WikiDoc by adding content here. It's easy! Click [[Help:How_to_Edit_a_Page|here]] to learn about editing. | ||
==Overview== | ==Overview== | ||
The electrocardiogram can demonstrate [[q waves]] due to replacement of the [[myocardium]] by electrically inert tissue. | The electrocardiogram can demonstrate [[q waves]] due to replacement of the [[myocardium]] by electrically inert tissue. | ||
===Electrocardiogram in acute Chagas disease=== | |||
Electrocardiogram during the acute phase of Chagas disease may demonstrate diffuse ST-T changes and low QRS voltage reflective of perimyocarditis. Other abnormalities include combined conduction disturbances, right bundle-branch block (RBBB), first-degree or second-degree atrioventricular block, and left anterior fascicular block (LAFB).<ref name="pmid9209939">{{cite journal | author = Parada H, Carrasco HA, Añez N, Fuenmayor C, Inglessis I | title = Cardiac involvement is a constant finding in acute Chagas' disease: a clinical, parasitological and histopathological study | journal = Int. J. Cardiol. | volume = 60 | issue = 1 | pages = 49–54 | year = 1997 | month = June | pmid = 9209939 | doi = | url = | issn = }}</ref><ref name="pmid11442212">{{cite journal | author = Carme B, Aune I, Nguyen G, Aznar C, Beaudet B | title = Four cases of acute chagasic myocarditis in French Guiana | journal = Am. J. Trop. Med. Hyg. | volume = 64 | issue = 3-4 | pages = 162–3 | year = 2001 | pmid = 11442212 | doi = | url = | issn = }}</ref> A normal electrocardiogram during the acute phase of Chagas disease suggests a favorable prognosis, since fewer than 15% of fatal cases were reported to have a normal tracing.<ref name="pmid2486527">{{cite journal | author = Dias JC | title = The indeterminate form of human chronic Chagas' disease A clinical epidemiological review | journal = Rev. Soc. Bras. Med. Trop. | volume = 22 | issue = 3 | pages = 147–56 | year = 1989 | pmid = 2486527 | doi = | url = | issn = }}</ref> | |||
===Electrocardiogram in chronic Chagas disease=== | |||
In a prospective study of chronic Chagas disease, the most common electrocardiographic alterations are RBBB and the combination of LAFB and RBBB, whereas left atrial enlargement, pathologic Q-wave, and left ventricular hypertrophy are significantly infrequent.<ref name="pmid16680295">{{cite journal | author = Braga JC, Reis F, Aras R, ''et al.'' | title = [Clinical and therapeutics aspects of heart failure due to Chagas disease] | language = Portuguese | journal = Arq. Bras. Cardiol. | volume = 86 | issue = 4 | pages = 297–302 | year = 2006 | month = April | pmid = 16680295 | doi = /S0066-782X2006000400010 | url = | issn = }}</ref> Patients with ventricular extrasystoles along with conduction defects have an increased risk for sudden death.<ref name="pmid14228098">{{cite journal | author = PORTO CC | title = [THE ELECTROCARDIOGRAM IN THE PROGNOSIS AND EVOLUTION OF CHAGAS' DISEASE] | language = Portuguese | journal = Arq. Bras. Cardiol. | volume = 17 | issue = | pages = 313–46 | year = 1964 | month = October | pmid = 14228098 | doi = | url = | issn = }}</ref> Intraventricular conduction abnormalities, sustained ventricular tachycardia, T-wave axis deviation, and QT-interval dispersion are predictors of mortality.<ref name="pmid16185616">{{cite journal | author = Viotti R, Vigliano C, Lococo B, ''et al.'' | title = [Clinical predictors of chronic chagasic myocarditis progression] | language = Spanish; Castilian | journal = Rev Esp Cardiol | volume = 58 | issue = 9 | pages = 1037–44 | year = 2005 | month = September | pmid = 16185616 | doi = | url = | issn = }}</ref><ref name="pmid15110206">{{cite journal | author = Salles GF, Xavier SS, Sousa AS, Hasslocher-Moreno A, Cardoso CR | title = T-wave axis deviation as an independent predictor of mortality in chronic Chagas' disease | journal = Am. J. Cardiol. | volume = 93 | issue = 9 | pages = 1136–40 | year = 2004 | month = May | pmid = 15110206 | doi = 10.1016/j.amjcard.2004.01.040 | url = | issn = }}</ref><ref name="pmid12835217">{{cite journal | author = Salles G, Xavier S, Sousa A, Hasslocher-Moreno A, Cardoso C | title = Prognostic value of QT interval parameters for mortality risk stratification in Chagas' disease: results of a long-term follow-up study | journal = Circulation | volume = 108 | issue = 3 | pages = 305–12 | year = 2003 | month = July | pmid = 12835217 | doi = 10.1161/01.CIR.0000079174.13444.9C | url = | issn = }}</ref><ref name="pmid12822748">{{cite journal | author = Salles GF, Cardoso CR, Xavier SS, Sousa AS, Hasslocher-Moreno A | title = Electrocardiographic ventricular repolarization parameters in chronic Chagas' disease as predictors of asymptomatic left ventricular systolic dysfunction | journal = Pacing Clin Electrophysiol | volume = 26 | issue = 6 | pages = 1326–35 | year = 2003 | month = June | pmid = 12822748 | doi = | url = | issn = }}</ref> | |||
==References== | ==References== |
Revision as of 00:57, 7 May 2013
Chagas disease Microchapters |
Diagnosis |
---|
Treatment |
Case Studies |
Chagas disease electrocardiogram On the Web |
American Roentgen Ray Society Images of Chagas disease electrocardiogram |
Risk calculators and risk factors for Chagas disease electrocardiogram |
Please help WikiDoc by adding content here. It's easy! Click here to learn about editing.
Overview
The electrocardiogram can demonstrate q waves due to replacement of the myocardium by electrically inert tissue.
Electrocardiogram in acute Chagas disease
Electrocardiogram during the acute phase of Chagas disease may demonstrate diffuse ST-T changes and low QRS voltage reflective of perimyocarditis. Other abnormalities include combined conduction disturbances, right bundle-branch block (RBBB), first-degree or second-degree atrioventricular block, and left anterior fascicular block (LAFB).[1][2] A normal electrocardiogram during the acute phase of Chagas disease suggests a favorable prognosis, since fewer than 15% of fatal cases were reported to have a normal tracing.[3]
Electrocardiogram in chronic Chagas disease
In a prospective study of chronic Chagas disease, the most common electrocardiographic alterations are RBBB and the combination of LAFB and RBBB, whereas left atrial enlargement, pathologic Q-wave, and left ventricular hypertrophy are significantly infrequent.[4] Patients with ventricular extrasystoles along with conduction defects have an increased risk for sudden death.[5] Intraventricular conduction abnormalities, sustained ventricular tachycardia, T-wave axis deviation, and QT-interval dispersion are predictors of mortality.[6][7][8][9]
References
- ↑ Parada H, Carrasco HA, Añez N, Fuenmayor C, Inglessis I (1997). "Cardiac involvement is a constant finding in acute Chagas' disease: a clinical, parasitological and histopathological study". Int. J. Cardiol. 60 (1): 49–54. PMID 9209939. Unknown parameter
|month=
ignored (help) - ↑ Carme B, Aune I, Nguyen G, Aznar C, Beaudet B (2001). "Four cases of acute chagasic myocarditis in French Guiana". Am. J. Trop. Med. Hyg. 64 (3–4): 162–3. PMID 11442212.
- ↑ Dias JC (1989). "The indeterminate form of human chronic Chagas' disease A clinical epidemiological review". Rev. Soc. Bras. Med. Trop. 22 (3): 147–56. PMID 2486527.
- ↑ Braga JC, Reis F, Aras R; et al. (2006). "[Clinical and therapeutics aspects of heart failure due to Chagas disease]". Arq. Bras. Cardiol. (in Portuguese). 86 (4): 297–302. doi:/S0066-782X2006000400010 Check
|doi=
value (help). PMID 16680295. Unknown parameter|month=
ignored (help) - ↑ PORTO CC (1964). "[THE ELECTROCARDIOGRAM IN THE PROGNOSIS AND EVOLUTION OF CHAGAS' DISEASE]". Arq. Bras. Cardiol. (in Portuguese). 17: 313–46. PMID 14228098. Unknown parameter
|month=
ignored (help) - ↑ Viotti R, Vigliano C, Lococo B; et al. (2005). "[Clinical predictors of chronic chagasic myocarditis progression]". Rev Esp Cardiol (in Spanish; Castilian). 58 (9): 1037–44. PMID 16185616. Unknown parameter
|month=
ignored (help) - ↑ Salles GF, Xavier SS, Sousa AS, Hasslocher-Moreno A, Cardoso CR (2004). "T-wave axis deviation as an independent predictor of mortality in chronic Chagas' disease". Am. J. Cardiol. 93 (9): 1136–40. doi:10.1016/j.amjcard.2004.01.040. PMID 15110206. Unknown parameter
|month=
ignored (help) - ↑ Salles G, Xavier S, Sousa A, Hasslocher-Moreno A, Cardoso C (2003). "Prognostic value of QT interval parameters for mortality risk stratification in Chagas' disease: results of a long-term follow-up study". Circulation. 108 (3): 305–12. doi:10.1161/01.CIR.0000079174.13444.9C. PMID 12835217. Unknown parameter
|month=
ignored (help) - ↑ Salles GF, Cardoso CR, Xavier SS, Sousa AS, Hasslocher-Moreno A (2003). "Electrocardiographic ventricular repolarization parameters in chronic Chagas' disease as predictors of asymptomatic left ventricular systolic dysfunction". Pacing Clin Electrophysiol. 26 (6): 1326–35. PMID 12822748. Unknown parameter
|month=
ignored (help)
- Pages with citations using unsupported parameters
- CS1 maint: Multiple names: authors list
- CS1 errors: DOI
- CS1 maint: Explicit use of et al.
- CS1 maint: Unrecognized language
- Parasitic diseases
- Zoonoses
- Tropical disease
- Neglected diseases
- Insect-borne diseases
- Disease
- Infectious disease
- Mature chapter
- Needs content