Bariatric surgery has become one of the fastest growing operative procedures due to its sustained results and the increasing prevalence of obesity worldwide. Despite this fact, bariatric surgery carries the usual risks and threats of surgical interventions and therefore its benefits might be undermined by its mid and long-term complications.

This retrospective study included obese patients requiring bariatric surgery from January 2004 to December 2017 provided by a private healthcare organization in Belo Horizonte, Brazil. Data regarding healthcare utilization were extracted from an administrative database (software Oracle Business Intelligence). Continuous variables were expressed as mean and standard deviation. Log-Rank test was used to adjust the survival curve (software STATA 13.1, Stata Corp, USA). This historical cohort resulted in no interventions, neither during the instituted treatment nor after the observed outcome. Privacy of subjects and the confidentiality of their personal information were handled in accordance with the ethical principles of the Declaration of Helsinki.

In total, 16,786 patients were included in the study (mean age 37.2 ± 10.2 years; female 79.2 percent; mean body mass index 42.4 ± 5.5 kg/m2). Patients were followed for up to seven years before and after surgery (total of 78,113 patients/year). For this group, the hospitalization rate was 0.099 / patients-year before versus 0.151 / patients-year after the bariatric surgery (p < 0.001). There were 224 deaths (1.33 percent) identified during the follow-up period, 0.4 percent in the first 30 postoperative days. The average costs for hospitalization were USD 3,339.36 and USD 4,305.04 for open and laparoscopic surgery, respectively.

Bariatric surgery has been an increasingly popular choice in the management of obesity. In our sample, it did not reduce the overall mid-term healthcare utilization rate.

Severe aortic stenosis with symptoms or left ventricular dysfunction has commonly a poor prognosis. Aortic valve replacement is usually performed for these patients aiming at improving their functional class and survival rate. Transcatheter aortic valve implantation (TAVI) is often presented as an option in patients with high surgical risk for conventional surgical valve replacement.(1) Nonetheless, in this group of patients, the literature has yielded conflicting evidence suggesting that benefits of TAVI for patients of high or intermediate surgical risk is not consistent.(2,3)

This retrospective study aimed to evaluate the mortality rate from a cohort of patients after the correction of aortic valve dysfunction with TAVI. It consisted of a convenience sample of patients at high risk for open surgery for the correction of aortic valve dysfunction treated with TAVI from 2013 to 2016. All included patients were being provided healthcare assistance by a private nonprofit health maintenance organization (HMO) operating in Belo Horizonte, Brazil. Since TAVI is not currently covered by the Brazilian supplementary healthcare system, reimbursements were enforced by lawsuits. Data was extracted from an administrative database, using the software Oracle Business Intelligence®. Continuous variables were expressed as mean and standard deviation. The Kaplan-Meier method was used to adjust the 1-year survival curve using the software STATA 13.1 (Stata Corp, College Station, TX, USA). This historical cohort resulted in no interventions, neither during the course of the instituted treatment nor after the observed outcome. Privacy of subjects and the confidentiality of their personal information were handled in accordance to the ethical principles of the Declaration of Helsinki.

Overall, seventeen patients with a mean age of 80.5 years (68-91) underwent TAVI; 59 percent were women. Peri-operative mortality rate was 23.5 percent (n = 4) and accumulated overall one-year mortality was 35.3 percent (n = 6). Mean length of hospital stay was 26.9 ± 16.6 days. Prolonged hospital stay (≥ 7 days) occurred in 14/17 cases (82.3 percent), with a maximum of 51 days.

In similarity to our findings, other authors described a high early and late mortality rate in patients undergoing TAVI. The strategy to use TAVI as an alternative in patients at high risk for open surgery is still under debate and should be carefully discussed taking into consideration the local team expertise as well as local healthcare available recourses.