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DOI: http://dx.doi.org/10.1590/S0102-76382011000200019
Shi-Min Yuan0; Hua Jing0
Correspondence To:
RESUMO
É sabido que a hipertensão é uma doença muito comum, e que os acidentes cerebrovasculares graves podem ocorrer se a pressão sanguínea não for apropriadamente controlada. Contudo, as condições associadas à hipertensão não controlada podem ser negligenciadas, e tornarem-se críticas, necessitando, eventualmente, uma intervenção cirúrgica urgente. Doença coronariana, síndrome aórtica aguda, cardiopatias congênitas, valvopatias e arritmias são sob este tópico de discussão. Dentre eles, a doença corornariana, inclusive o infarto do miocárdio e especialmente a ruptura cardíaca pós-infarto e a dissecção aórtica, são as situações críticas principais que os médicos podem encontrar na prática clínica. O papel que a hipertensão desempenha nessas condições pode ser complexo, incluindo fatores hemodinâmicos, eletrofisiológicos e biomoleculares, nos quais o último pode prevalecer atualmente. A doença coronariana pode associar-se com uma redução na síntese de óxido nítrico. Fator de crescimento transformador e nas metaloproteinases da matriz têm sido observados em relação à síndrome aórtica. O Wnt, p38 e a via de sinalização JNK caminho podem estar implicado no desenvolvimento da hipertrofia ventricular responsável por arritmias cardíacas. Vários fenótipos dos genes podem apresentar defeitos cardíacos congênitos diferentes. Este artigo apresenta essas condições, e discute, além disso, possíveis etiologias e as estratégias de tratamento potenciais bem destacar sua importância quanto a prognóstico.
Keywords Procedimentos Cirúrgicos Cardíacos. Cardiopatias. Hipertensão.
ABSTRACT
It is well-known that hypertension is a very common disease, and severe cerebrovascular accidents might occur if the blood pressure is not properly controlled. However, conditions associated with uncontrolled hypertension may be overlooked, and may become critical and eventually require a surgical intervention on an urgent basis. Coronary artery disease, acute aortic syndrome, congenital and valvular heart disease, and arrhythmias are under this topic of discussion. Of them, coronary artery disease including myocardial infarction and especially postinfarction myocardial rupture, and aortic dissection are major critical situations that physicians may encounter in clinical practice. The role that hypertension plays in these conditions can be complex, including hemodynamic, electrophysiological and biomolecular factors, where the latter may prevail in the current era. Coronary artery disease may be associated with a reduced nitric oxide synthesis. Transforming growth factor and matrix metalloproteinases have been observed in relation to aortic syndrome. Wnt, p38 and JNK signaling pathway may be involved in the development of ventricular hypertrophy responsible for cardiac arrythmias. Various gene phynotypes may present in different congenital heart defects. This article is to present these conditions, and to further discuss the possible etiologies and the potential treatment strategies so as to highlight the relevance at a prognostic level.
Palavras-Chave Cardiac surgical procedures. Heart Diseases. Hypertension.
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Artigo recebido em 16 de outubro de 2010.
Artigo aprovado em 21 de janeiro de 2011.
