OBJECTIVE The aim of the present study was to investigate the factors associated with
chronic post-sternotomy pain in heart surgery patients.METHODS Between January 2013 and February 2014, we evaluated 453 patients with >6
months post-sternotomy for cardiac surgery at a surgical outpatient clinic.
The patients were allocated into a group with chronic post-sternotomy pain
(n=178) and a control group without pain (n=275). The groups were compared
for potential predictors of chronic post-sternotomy pain. We used Cox
proportional hazards regression to determine which independent variables
were associated with the development of chronic post-sternotomy pain.RESULTS In total, 39.29% of the patients had chronic poststernotomy pain. The
following factors were significantly associated with chronic post-sternotomy
pain: (a) use of the internal thoracic artery in coronary bypass grafting
(P=0.009; HR=1.39; 95% CI, 1.08 to 1.80); (b) a history
of antidepressant use (P=0.0001; HR=2.40; 95% CI, 1.74 to
3.32); (c) hypothyroidism (P=0.01; HR=1.27; 95% CI, 1.03 to
1.56); (d) surgical wound complication (P=0.01; HR=1.69;
95% CI, 1.08 to 2.63), and (e) patients on disability benefits or scheduled
for a consultative medical examination for retirement
(P=0.0002; HR=2.05; 95% CI, 1.40 to 3.02).CONCLUSION The factors associated with chronic poststernotomy pain were: use of the
internal thoracic artery; use of antidepressants; hypothyroidism; surgical
wound complication, and patients on disability benefits or scheduled for a
consultative examination.