Background: Acute type A aortic dissection (aTAAD) is a lethal disease and age is an important risk factor for outcomes. This retrospective study was to analyze the impact of age stratification in aTAAD. Methods: From January 2011 to December 2019, 1092 aTAAD patients from Nanjing Drum Tower Hospital received surgical therapy. Patients were divided into seven groups according to every ten-year interval (20s-80s). The differences between the groups were analyzed in terms of the baseline preoperative conditions, surgical methods, and postoperative outcomes of patients of different age groups. During a median follow-up term of 17 months, the survival rates were compared among seven groups through Kaplan-Meier analysis. Results: The median age was 52.0 years old in the whole cohort. The multiple comorbidities were more common in old age groups (60s, 70s, 80s), while the 20s group patients had the highest proportion of Marfan syndrome (28.1%). Preoperative hypotension was highest in 80s (16.7%, P=0.038). Young age groups (20s-60s) had a higher rate of root replacement and total arch replacement, which led to a longer duration of operation and hypothermic circulation arrest. The overall mortality was 14.1%, the tendency of mortality was increased with age except 20s group (33.3% in 80s, P=0.016). The postoperative morbidity of gastrointestinal bleeding and bowel ischemia were 16.7% and 11.1% in 80s group. Conclusion: Age is a major impact factor for aTAAD surgery. Old patients presented more comorbidities before surgery, the mortality and complications rate were significantly higher even with less invasive and conservative surgical therapy.

Background: Radiofrequency ablation(RFA) has emerged as a common approach to treatment of atrial fibrillation(AF) coupled with valve surgery. However, risk factors were rarely reported on recurrence after RFA of valvular atrial fibrillation . Methods: Retrospective study of a single-center database was performed in patients underwent valvular surgery combined with radiofrequency ablation. Follow-up was conducted from 3 months to 1 year after procedure. AF recurrence was defined as any episode of atrial arrhythmia lasting more than 30 seconds. Risk factors were analysis using Logistic regression and a predictive model was established. Results: 3-month follow-up was completed in 319 patients, 195 patients (61.1%) had AF recurrence. During the 1-year follow-up, 74 /166 patients(44.6%) had AF recurrence. Compared with sinus rhythm maintenance group, overweight(p=0.022), high BMI(p=0.024), large preoperative LAD(p<0.001), small MI area(p=0.019), large MI diameter(p<0.001) and other liver function parameter like low ALT level(p=0.023), high total bilirubin(p=0.013) and direct bilirubin level(p=0.033) were significantly correlated with AF recurrence after RF. In multivariate analysis, BMI(OR 1.12, 95% CI 1.04-1.21, p=0.003), LAD(OR 1.49, 95% CI 1.09-2.07, p=0.015), MI area(OR 0.41, 95% CI 0.18-0.85, p=0.023), MI diameter(OR 2.45, 95% CI 1.16-5.34, p=0.021), ALT(OR 0.98, 95% CI 0.97-0.99, p=0.002) and eGFR(OR 1.01, 95% CI 1.09-1.02, p=0.042) were significantly independent risk predictors of AF early recurrence. A predictive model was created with AUC of 0.720. Conclusions: BMI、LAD、MI area、MI diameter、ALT and eGFR were risk predictors of AF early recurrence. We established a predictive model and it devote to preoperative clinical health management of individual with valvular AF.