The related factors affecting valvular replacement through ministernotomy / 中国微创外科杂志

ABSTRACT

Objective To determine the factors affecting valve replacement through mini - sternotomy. Methods 35 patients underwent mitral valvular replacement (MVR, 23 cases) or bivalvular replacement (BVR, 12 cases) through minimal sternotomy. 19 cases were male and l6 cases were female. The age ranged from 21 to 62 years with an average(44 ? 9) years. The factors affecting the aorta clamped time (ACT) and the cardiopulmonary by- pass time (CPBT) ware analyzed. Results When the left ventricular diastolic diameter was more than 60mm, ACT and CPBT were longer in MVR and were shorter in BVR. ACT and CPBT were almost significantly longer in MVR and AVR when superior margin of manubrium was lower than the fifth thoracic vertebra. Height of aortic node, cardiotho- racic ratio, diameter of left artia and aortic root were not related with ACT and CPBT. Conclusion Larger left ventricular and lower manubrium may be the related factors that affecting the operation of valvular replacement.