Objective As the population ages, increasing number of older patients
are undergoing adult cardiac surgery. The purpose of the study is to
assess the impact of age on postoperative outcomes in patients that
undergo coronary artery bypass grafting (CABG). Methods Patients that
are ≥70 years old who underwent CABG were selected from the
Nationwide/National Inpatient Sample from 2010 to 2015 using ICD-9-CM
diagnosis and procedure codes. The patients who were 70–79 years old
were compared to patients aged 80–89 years old to determine if the age
difference of the patients had an impact on surgical outcomes. In
addition, the gender of the patients 80-89 years old were compared. The
rates of postoperative complications, and mortality were compared.
Results A total of 67,568 patients were identified who were ≥70 years
old and underwent CABG. Compared to the Septuagenarians, the
Octogenarians were more likely to develop cardiac complications (OR
[odds ratio] =1.20, 95% CI [confidence interval] 1.12-1.23.
They were also more likely to develop renal complications (P
<0001), and respiratory complications (P <0001). The
Octogenarians were also more likely to bleed postoperatively (P
<0.0001) and have a higher mortality (P <0001).
Furthermore, the female Octogenarians had a higher mortality (OR 1.25
95% CI 1.07–1.46) compared to males in the same age group. Conclusions
The patients who were ≥80 – 89 years old had worse postoperative
outcomes. The Octogenarians who were females had a higher mortality
compared to their male counterparts.