RESUMEN
BACKGROUND: Combined oral contraceptives (COCs) may lead to a rise in cardiovascular disease risk, possibly associated with changes in blood pressure and endothelial function. STUDY DESIGN: The objective was to evaluate the impact of COC containing 20 mcg of ethinylestradiol (EE) and 3 mg of drospirenone (DRSP) on the arterial endothelial function, systolic and diastolic blood pressure (SBP and DBP , respectively), heart rate (HR), cardiac output (CO) and total peripheral resistance (TPR) of healthy young women. Of the 71 women in the study, 43 were evaluated before the introduction of COC and after 6 months of its use (case group) and 28, COC nonusers, were assessed for the same parameters at the same time interval (control group). RESULTS: No significant changes in endothelium-dependent and endothelium-independent functions or in measures of SBP, DBP, HR, CO and TPR caused by COC use were observed in the case group (p>.05 for all variables) or in the control group. CONCLUSION: These data suggest COC with 20 mcg EE and 3 mg DRSP does not alter arterial endothelial function or hemodynamic parameters in healthy young women.
Asunto(s)
Androstenos/efectos adversos , Endotelio Vascular/efectos de los fármacos , Estrógenos/efectos adversos , Etinilestradiol/efectos adversos , Hemodinámica/efectos de los fármacos , Antagonistas de Receptores de Mineralocorticoides/efectos adversos , Adulto , Anticonceptivos Orales Combinados/efectos adversos , Femenino , Humanos , Estudios ProspectivosRESUMEN
A alteração da função endotelial precede o desenvolvimento das alterações ateroscleróticas morfológicas e pode contribuir para o desenvolvimento da lesão e das complicações clínicas finais. Essa observação levou ao desenvolvimento de diversos métodos com o objetivo de testar os diferentes aspectos da função endotelial. Apesar da importância de seu estudo, os testes disponíveis ainda não são adequados para screening ou para decisão clínica individual, visto que ainda são de difícil execução e de alto custo e apresentam certa variabilidade que ainda limita seu uso na rotina clínica. Porém, deve-se ressaltar que há clara necessidade de novas estratégias de testes clínicos que possam refinar a avaliação de risco cardiovascular individualmente, portanto o estudo da função endotelial, com o avançar das pesquisas, provavelmente virá a se tornar uma ferramenta importante na avaliação do risco cardiovascular, na detecção precoce da doença, além de julgar respostas às intervenções designadas para prevenir a progressão da doença em estágios precoces e reduziros eventos adversos tardios.
Changes in endothelial function precedes the development of morphological atherosclerotic changes and can also contribute to lesion development and later clinical complications. This observation has led to the development of arange of methods to test different aspects of its function. Despite the importance of endothelial function testing, it is not yet suitable for screening or individual clinical decision--making, because currently the available tests are difficult, expensive, and variable for routine clinical use. However it must be emphasized that there is a clear need for clinical testing strategies that refine risk assessment in individual subjects. In this context, in a near future, endothelial function testing will become an important diagnostic tool in cardiovascular risk evaluation, and also in early disease detection, and judgment of response to interventions designed to prevent progression of early disease, and reduce later adverse events in patients.