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'after': [94], '7.5': [95], '(5–40)': [96], 'min': [97, 103], '(10–60)': [102], 'P': [107, 147, 179, 215, 219], '0.0005).': [109], 'Postoperative': [110], 'pain': [111, 240], 'intensity': [112], 'was': [113, 136, 153], 'higher': [114], 'than': [117, 207], '8': [122], 'The': [126], 'ratio': [127], 'between': [128], 'boluses': [129], 'given': [130], 'demanded': [132], 'from': [133], 'pump': [135], '0.5': [137], '(0.13–0.7)': [138], '0.7': [142], '(0.4–1.0)': [143], '0.005).': [149], 'Rescue': [150], 'IV': [151], 'tramadol': [152], 'required': [154], '16': [163, 184], 'group': [168, 176], '(84%)': [169], 'eight': [171], '(46%)': [177], '0.05).': [181], 'At': [182], 'observation': [189], 'times': [190], 'larger': [192], 'proportion': [193], 'receiving': [196, 209], 'had': [198], 'complete': [199], 'regression': [200], '(70%': [204], '95%)': [206], '(50%': [211], '55%)': [213], '0.05': [217], '0.013,': [221], 'respectively).': [222], 'Conclusions:': [223], 'Although': [224], 'can': [227], 'be': [228], 'effectively': [229], 'used': [230], 'analgesia,': [235], 'provides': [238], 'better': [239], 'relief': [241], 'function.': [244]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2076640469', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 2}, {'year': 2021, 'cited_by_count': 1}, {'year': 2019, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 4}, {'year': 2014, 'cited_by_count': 4}], 'updated_date': '2024-09-01T03:31:19.805814', 'created_date': '2016-06-24'}