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OBJECTIVE: Minimally_invasive aortic valve replacement (mini_AVR) via upper partial sternotomy is increasingly become routine. We compared outcomes in patients older than 75 years to those younger than 75.
METHODS: Operative records between 2006 and July 2014 were examined to retrieve all patients who had undergone mini­AVR. The Patient Analysis and Tracking System (PATS) database was accessed to retrieve patient demographics, pre­morbid status, and intra­operative details. Survival data was obtained from the Registry at Welsh Demographic Service. We used descriptive statistics to analyse the results.
RESULTS: During this time period, a total of 170 consecutive patients underwent mini­AVR. Their mean age was 69.9 years. 48% were female and 40% of the patients were above the age of 75. Mean logistic euroSCORE was 8.85 (median 5.94) with an inter­quartile range of (3.13,10.92).
Comparing the two groups, there was no difference in the rate of complications (chi-squared statistic = 0.016, p = 0.89) or post-operative length of stay (unpaired t-test, p = 0.95). The overall mean post-operative length of stay was 6.6 days. In­ hospital mortality was 0.6%. 30­day all­cause mortality was 2.9%. Conversion to full sternotomy was 0%.
CONCLUSIONS: We have shown that there is no difference in the rate of complications between the older age group in minimally-invasive AVR.