Thoracotomy is one of the most painful surgical stimuli currently practiced. Inadequate management of post-thoracotomy pain can increase patients discomfort and it is often associated with postoperative pulmonary and cardiac complications. Thoracic epidural analgesia was considered to be the most effective method of pain control and it remains the gold standard to treat post-thoracotomy pain; however, in the last few years evidences have suggested that paravertebral nerve block can be at least as effective as epidural analgesia for analgesia in thoracotomy. The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on September, 2014