Chronic pain is a common complication after cardiothoracic surgery. The prevalence of post-thoracotomy pain syndrome (PTPS) ranges from 33% to 91%. Exact pathogenetic mechanisms for developing chronic pain after thoracotomy are unknown. Apart from intraoperative nerve damage and subsequent postoperative neuropathic pain, operation techniques, age, sex, pre-existing pain, genetic and psychosocial factors, severe postoperative pain, and analgesic management are suspected to have an impact on the development of PTPS .
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Total dose of morphine in the first 24 h postoperatively.
Timeframe: 24 hours postoperative