Early and mid-term outcomes of modified aortic root repair for acute stanford type A aortic dissection

Background Acute Stanford type A aortic dissection (ATAAD) is the most common catastrophic aortic event. Most ATAAD involves the aortic root which has many important anatomical structures such as aortic valve, so the proper treatment of dissected root can ensure a good prognosis for patients. However, there is still no consensus on root management strategies for ATAAD patients with aortic root involvement. Purpose This clinical study aimed to evaluate the therapeutic effect of modified aortic root repair in ATAAD. Methods From September 2017 to September 2020, Participants with root involvement of ATAAD were recruited who underwent modified aortic root repair as well as some additional procedure such as aortic valve junction suspension plasty based on the aortic sinus tear extent. During this novel procedure, the proximal anastomosis plane was at the level of the sinu-tubular junction and the false lumen below it was retained. We collected and analyzed the perioperative clinical data and follow-up imaging data of patients, and further evaluated the early and mid-term efficacy of this surgical approach. Results A total of 79 patients were enrolled, including 59 males and 20 females, the age was (52.4±11.3) years old (28–73 years), the diameter of aortic sinus was (38.6±4.1) mm, and the diameter of sinu-tubular junction was (41.8±4.8) mm. In this group, 75 patients (94.9%) received ascending aorta replacement, total arch replacement and frozen elephant trunk, 2 patients (2.5%) received ascending aorta replacement and hybrid total arch replacement, 2 patients (2.5%) received ascending aorta replacement and partial arch replacement. Cardiopulmonary bypass time was (197.2±58.6) min (118–455 min), blocking time was (132.6±38.9) min (73–323 min), circulatory arrest time was (10.3±7.0) min (0–27 min). There was no perioperative death, no paraplegia, one secondary thoracotomy, five renal failures needing hemodialysis treatment and two cerebral infarctions. Before patients discharged, aortic CTA showed that the residual false lumen in the sinus disappeared. And the diameter of the aortic sinus was (35.5±3.1) mm, the diameter of the junction of the aortic sinus was (30.0±3.0) mm. The patients were followed up for (18±12) months (3–35 months). There was one patient died during follow-up and no further surgical intervention at the root of the aorta. Follow-up aortic CTA showed no residual or new dissection in the aortic sinus and no significant difference in the diameters of aortic sinu-tubular junction (P=0.122) or aortic sinus (P=0.37) between postoperative period and follow-up period. Echocardiography showed that the structure and function of the aortic valve were normal. Conclusions The modified aortic root repair for ATAAD is relatively simple, easy to learn and safe in perioperative period. Early and mid-term follow-up image examination showed that the structure of aortic sinus returned to normal. The long-term clinical effect requires close attention. FUNDunding Acknowledgement Type of funding sources: None. Modified aortic root repair procedure Aortic root diameter change under CTA

David procedure for aortic root aneurysm in the background of Marfan syndrome patient with severe kyphoscoliosis and previous mitral valve replacement

Cardiac complication is one of the diseases that usually develop in Marfan syndrome patient such as mitral valve regurgitation and aortic root aneurysm. Apart from that, other congenital anomalies also tend to occur in this group of patients such as pectus excavatum and scoliosis. We report a case of successful high-risk surgery involving a Marfan syndrome patient who had underlying severe kyphoscoliosis and previous mitral valve replacement that underwent redo sternotomy and valve sparing aortic root repair (David procedure). The surgery was challenging due to the need to perform redo-sternotomy on severe pectus patient, performing valve sparing aortic root repair, and complicated with injury to right coronary artery require modified Cabrol modification for implantation of the coronary artery. The available literature about redo sternotomy on severe pectus excavatum for aortic root repair is limited, hence this paper aims to highlight the successful of performing the procedure, and the complication that might occur during the procedure.

Surgical Management of a Giant Left Sinus of Valsalva Aneurysm with Coronary Artery Abnormality

Coronary insufficiency caused by unruptured left sinus of Valsalva aneurysm (SVA) is exceedingly rare in the literature. Herein, we present a successful surgically treated case of giant left SVA with severe aortic regurgitation and coronary insufficiency, thus introducing a tailored valve-sparing aortic root repair technique.

Longitudinal Outcomes of Cardiogenic Shock Patients Undergoing Conventional Cardiac Surgery

Background: Cardiogenic shock is a known risk factor for early mortality following conventional cardiac surgery, however its impact on longitudinal outcomes is less established. This study evaluated longer-term outcomes of conventional cardiac surgery in patients with cardiogenic shock. Methods: This was a retrospective review of conventional cardiac operations performed in patients presenting with cardiogenic shock between 2010 and 2020. The primary outcome was survival, and secondary outcomes included postoperative complications, and rates of heart failure readmission. Multivariable Cox proportional hazards modeling was conducted to identify risk-adjusted predictors of mortality. Results: 604 patients were included, representing 4% of all cardiac cases. Median follow up was 4.3 (IQR 0.3-6.8) years. Aortic root repair/replacement (31.6%) was most commonly performed. 11.1% of patients required preoperative cardiopulmonary resuscitation. Bridging modalities included intravenous inotropes (35.4%), intra-aortic balloon pump (33.4%), Impella (0.5%), or venoarterial extracorporeal membrane oxygenation (3.3%). Operative mortality was 21.5%. Complications included reoperation (24.3%), stroke (15.9%) renal failure (19.2%), and prolonged ventilation (47.9%). Unadjusted 1- and 5-year survival were 71.7% and 62.1%. Risk-adjusted preoperative predictors for mortality included peripheral vascular disease (HR 1.75, 95% CI 1.23-2.49), dialysis dependency (HR 6.30, 95% CI 3.77–10.51) and increasing age (HR 1.02, 95% CI 1.02–1.04). Three patients eventually underwent ventricular assist device implantation and no patients underwent heart transplantation. Conclusions: Despite high initial rates of morbidity and mortality following conventional cardiac surgery in patients presenting with cardiogenic shock, 62% survive to 5 years and most do not require heart failure readmission or advanced heart failure surgical therapy.