Resumen

VELASQUEZ, Oscar et al. Aortic ring widening for prosthesis implantation: Evaluation throughout time. Rev. Col. Cardiol. [online]. 2005, vol.11, n.7, pp.349-355. ISSN 0120-5633.

Objective: to describe the cardiac characteristics of patients submitted to aortic valvular change with ring widening for a bigger prosthesis implantation, through clinical and echocardiographic follow-up. Material and methods: 26 patients were chosen between 1997 and 2001. Follow-up was possible in 13 patients. Mean age was 57 years. A control echocardiogram was performed, obtaining the aortic valvular area, ventricular mass and the transprosthetic gradients in order to establish the respective index. Results: there was an improvement in the functional class of the controlled 13 patients, with 92.3% in class I (p: 0.002). Average postoperative evolution time was 25 months. Ventricular mass index and valvular gradients (Middle) showed a decrease from 149 to 113 gr/mt² and from 67 to 12.2 mmHg respectively (p: 0.001). An increase in the efficient prosthetic valvular area was also evidenced; it varied from 0.37 to 1 cm/mt² (p: 0.001). Discussion: the results evidence an involution of ventricular disorders and improvement in the functional class of patients who underwent this procedure; however, it was not possible to establish a comparison with patients that would have a prosthesis with a diameter smaller than 21 mm, which would allow to assert the advantages of a bigger valve. Conclusions: in a patient who comes to the emergency ward with non traumatic thoracic pain there are no significant changes in the clinical and electrocardiographical presentation respect to the new myocardial infarction definition.

Palabras clave : aortic ring; prosthesis; echocardiography.

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