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Perfil dos hormônios tireoidianos nas síndromes coronarianas agudas / Thyroid hormone profile in acute coronary syndromes
Pimentel, Rodrigo Caetano; Cardoso, Gilberto Perez; Escosteguy, Claudia Caminha; Abreu, Luiz Maurino.
  • Pimentel, Rodrigo Caetano; Universidade Federal Fluminense. Rio de Janeiro. BR
  • Cardoso, Gilberto Perez; Universidade Federal Fluminense. Rio de Janeiro. BR
  • Escosteguy, Claudia Caminha; Universidade Federal Fluminense. Rio de Janeiro. BR
  • Abreu, Luiz Maurino; Universidade Federal Fluminense. Rio de Janeiro. BR
Arq. bras. cardiol ; 87(6): 688-694, dez. 2006. tab
Article in Portuguese | LILACS | ID: lil-440366
RESUMO

OBJETIVO:

Descrever o perfil hormonal tireoidiano em pacientes com síndromes coronarianas agudas (SCA), e nos grupos 1) angina instável e/ou infarto agudo do miocárdio sem supradesnivelamento de segmento ST (AI/IAM sem supra ST); 2) infarto agudo do miocárdio com supradesnivelamento do segmento (IAM com supra ST), e nos pacientes que evoluíram ou não a óbito conforme os grupos.

MÉTODOS:

Foram estudados prospectivamente setenta pacientes portadores de SCA, internados na unidade coronariana do Hospital dos Servidores do Estado/RJ. As amostras sangüíneas foram coletadas nos primeiro, quarto e sétimo dias de internação. Exame clínico e eletrocardiograma foram realizados no período de internação.

RESULTADOS:

Dos 70 pacientes admitidos, 13 (18,6 por cento) apresentaram a "síndrome do eutireoidiano doente" (SED), que consiste na queda do hormônio T3 e ou T3 livre, aumento do hormônio T3 reverso (rT3) e inalteração dos hormônios TSH, T4 e T4 livre. Nos pacientes do grupo IAM com supra ST, observaram-se elevação precoce e maiores médias do hormônio tireoidiano T3 reverso (rT3) e menores médias dos hormônios T3 e T3 livre. Nos coronariopatas que evoluíram a óbito, observamos achados hormonais condizentes com os encontrado na SED, com valores médios expressivos dos hormônios rT3 e T3.

CONCLUSÃO:

Os resultados apresentados neste estudo mostram a importância do reconhecimento da "síndrome do eutireoidiano doente" nos pacientes coronariopatas, sugerindo associação com pior prognóstico nos pacientes com síndrome coronariana aguda.
ABSTRACT

OBJECTIVE:

To describe thyroid hormone profile in patients with acute coronary syndromes (ACS), divided into two groups 1) unstable angina and/or non-ST-segment elevation acute myocardial infarction (UA/NSTEMI); 2) ST-segment elevation acute myocardial infarction (STEMI), as well as in patients that progressed or not to death, according to the groups.

METHODS:

Seventy ACS patients admitted to the coronary care unit of the Hospital dos Servidores do Estado, Rio de Janeiro, were prospectively studied. Blood samples were collected on day 1 and on days 4 and 7 following admission. Clinical evaluation and electrocardiograms were performed during hospitalization.

RESULTS:

Of the 70 patients admitted, 13 (18.6 percent) had "euthyroid sick syndrome" (ESS), a condition characterized by decreased serum T3 and/or free T3, increased serum reverse T3 (rT3), plus normal serum TSH, T4, and free T4. Patients belonging to the STEMI group showed early elevations, in addition to higher mean reverse T3 (rT3) and lower mean T3 and free T3 levels. In coronary heart disease patients that progressed to death, hormonal findings were consistent with those found in the ESS, with more expressive rT3 and T3 mean values.

CONCLUSION:

Our results show the importance of recognizing the "euthyroid sick syndrome" in coronary heart disease patients, suggesting an association with poorer prognosis in patients with acute coronary syndrome.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Thyroid Hormones / Euthyroid Sick Syndromes / Angina, Unstable / Myocardial Infarction Type of study: Diagnostic study / Observational study / Prognostic study / Risk factors Limits: Female / Humans / Male Language: Portuguese Journal: Arq. bras. cardiol Journal subject: Cardiology Year: 2006 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal Fluminense/BR

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Full text: Available Index: LILACS (Americas) Main subject: Thyroid Hormones / Euthyroid Sick Syndromes / Angina, Unstable / Myocardial Infarction Type of study: Diagnostic study / Observational study / Prognostic study / Risk factors Limits: Female / Humans / Male Language: Portuguese Journal: Arq. bras. cardiol Journal subject: Cardiology Year: 2006 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal Fluminense/BR