The aim of this randomized one-blinded study will be to evaluate the efficacy and tolerability of two different oral doses of tapentadol and compare it to tramadol (an opioid commonly used to treat post-surgical pain) in cardiac surgery patients
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change from baseline in pain score at rest
Timeframe: 2 hours after analgesia administration
change from baseline in pain score during coughing
Timeframe: 2 hours after analgesia administration
side effects
Timeframe: 2 hours after analgesia administration
incidence of chronic pain 3 months after surgery
Timeframe: 3 months after surgery
incidence of chronic pain 6 months after surgery
Timeframe: 6 months after surgery
incidence of neuropathic pain 3 months after surgery
Timeframe: 3 months after surgery
incidence of neuropathic pain 6 months after surgery
Timeframe: 6 months after surgery