Kết quả phẫu thuật Konno cải tiến điều trị bệnh hẹp phức tạp dưới van động mạch chủ ở trẻ em

Complex left ventricular outflow tract obstruction (c- LVOTO) necessitates an diagnosis, follow - up and operation to void severe left ventricular outflow tract obstruction. There are some procedures, for example: Aor- ventriculoplasty (the Konno-Rastan procedure), apicoaortic conduit... However, all procedures require a prosthetic or allogeneic valve as well as postoperative anticoagulation therapy, reoperation, or both, the modified Konno procedure which avoid that problems. Methods. This was a review of seri c- LVOTO cases who undeiwent modified Konno procedure from 1/2014 to 12/2022. There were 8 patients ( 5 males and 3 females). The mean age was 5,6 years (range from 1 - 1 0 years) and the mean weight was 12,6 kilograms. The gradient of left ventricular outflow tract was 43 mmHg. All aortic valve were competents. Results. The time of cardiopulmonary bypass, aortic clamping were: 76 mins; 56 mins. There was no mortality. The gradient postopration of LVOT and RVOT were 14 mmHg and 8 mmHg. During follow-up tune 61 months after surgery, there was no late death. The gradient of LVOT and RVOT were 10 mmHg and 6 mmHg Conclusion'. The modified Konno procedure had good results with low gradient of LVOT and RVOT